S-L2980_1资料

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Rev.4.1_00

HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR

S-L2980 Series

The S-L2980 series is a positive voltage regulator with a low dropout voltage, high output voltage accuracy, and low current consumption developed based on CMOS technology.

A built-in low on-resistance transistor provides a low dropout voltage and a large output current. A shutdown circuit ensures long battery life.

Various types of output capacitors can be used in the S-L2980 series compared with the conventional CMOS voltage regulators. A small ceramic capacitor can also be used.

󰂄 Features

• Output voltage:

• High accuracy output voltage: • Low dropout voltage:

• Low current consumption: • High peak current capability: • Built-in shutdown circuit: • Low ESR capacitor:

1.5 V to 6.0 V, selectable in 0.1 V steps ±2.0 % accuracy

120 mV typ. (at 3.0 V output product, IOUT=50 mA) During operation: 90 μA typ., 140 μA max. During shutdown: 0.1 μA typ., 1.0 μA max.

150 mA output is possible. (at VIN≥VOUT(S)+1.0 V)*1 Ensure long battery life.

A 1.0 μF capacitor can be used as the output capacitor.

(A 2.2 μF capacitor can be used as the output capacitor for the products whose output voltage is 1.7 V or less.) 70 dB typ. (at 1.0 kHz) SOT-23-5

• High ripple rejection: • Small package: • Lead-free products

*1. Attention should be paid to the power dissipation of the package when the load is large.

󰂄 Applications

• Power supply for battery-powered devices

• Power supply for personal communication devices • Power supply for home electric/electronic appliances • Power supply for cellular phones

󰂄 Package

Package Name Drawing Code

Package Tape Reel SOT-23-5 MP005-A MP005-A MP005-A

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HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR S-L2980 Series

Rev.4.1_00

󰂄 Block Diagram

*1 VIN VOUT

+ ON/OFF Shutdown circuit− Reference voltage circuitVSS *1. Parasitic diode

Figure 1

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Rev.4.1_00

HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATORS-L2980 Series

󰂄 Product Name Structure

• The product types and output voltage for S-L2980 Series can be selected at the user’s request. Refer to the “1. Product Name” for the construction of the product name and “2. Product Name List” for the full product names.

1. Product Name

S-L2980 x xx MC - TF - G

IC direction in tape specifications*1

Package name (abbreviation) MC: SOT-23-5

Output voltage 15 to 60

(e.g. When the output voltage is 1.5 V, it is expressed as 15.) Product type*2

A: ON/OFF pin positive logic B: ON/OFF pin negative logic

*1. Refer to the taping specifications.

*2. Refer to the “3. Shutdown Pin (ON/OFF Pin)” in the “󰂄 Operation”.

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HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR S-L2980 Series

2. Product Name List

Table 1

Output Voltage SOT-23-5 1.5 V ±2.0 % S-L2980A15MC-TF-G1.6 V ±2.0 % S-L2980A16MC-TF-G 1.7 V ±2.0 % S-L2980A17MC-TF-G 1.8 V ±2.0 % S-L2980A18MC-TF-G 1.9 V ±2.0 % S-L2980A19MC-TF-G 2.0 V ±2.0 % S-L2980A20MC-TF-G 2.1 V ±2.0 % S-L2980A21MC-TF-G 2.2 V ±2.0 % S-L2980A22MC-TF-G 2.3 V ±2.0 % S-L2980A23MC-TF-G 2.4 V ±2.0 % S-L2980A24MC-TF-G 2.5 V ±2.0 % S-L2980A25MC-TF-G 2.6 V ±2.0 % S-L2980A26MC-TF-G 2.7 V ±2.0 % S-L2980A27MC-TF-G 2.8 V ±2.0 % S-L2980A28MC-TF-G 2.9 V ±2.0 % S-L2980A29MC-TF-G 3.0 V ±2.0 % S-L2980A30MC-TF-G 3.1 V ±2.0 % S-L2980A31MC-TF-G 3.2 V ±2.0 % S-L2980A32MC-TF-G 3.3 V ±2.0 % S-L2980A33MC-TF-G 3.4 V ±2.0 % S-L2980A34MC-TF-G 3.5 V ±2.0 % S-L2980A35MC-TF-G

S-L2980A36MC-TF-G 3.6 V ±2.0 %

S-L2980A37MC-TF-G 3.7 V ±2.0 %

3.8 V ±2.0 % S-L2980A38MC-TF-G 3.9 V ±2.0 % S-L2980A39MC-TF-G 4.0 V ±2.0 % S-L2980A40MC-TF-G 4.1 V ±2.0 % S-L2980A41MC-TF-G 4.2 V ±2.0 % S-L2980A42MC-TF-G 4.3 V ±2.0 % S-L2980A43MC-TF-G 4.4 V ±2.0 % S-L2980A44MC-TF-G 4.5 V ±2.0 % S-L2980A45MC-TF-G 4.6 V ±2.0 % S-L2980A46MC-TF-G 4.7 V ±2.0 % S-L2980A47MC-TF-G 4.8 V ±2.0 % S-L2980A48MC-TF-G 4.9 V ±2.0 % S-L2980A49MC-TF-G 5.0 V ±2.0 % S-L2980A50MC-TF-G 5.1 V ±2.0 % S-L2980A51MC-TF-G 5.2 V ±2.0 % S-L2980A52MC-TF-G 5.3 V ±2.0 % S-L2980A53MC-TF-G 5.4 V ±2.0 % S-L2980AMC-TF-G 5.5 V ±2.0 % S-L2980A55MC-TF-G 5.6 V ±2.0 % S-L2980A56MC-TF-G 5.7 V ±2.0 % S-L2980A57MC-TF-G 5.8 V ±2.0 % S-L2980A58MC-TF-G 5.9 V ±2.0 % S-L2980A59MC-TF-G 6.0 V ±2.0 % S-L2980A60MC-TF-G

Remark Please contact our sales office for type B products.

Rev.4.1_00

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Rev.4.1_00

HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATORS-L2980 Series

󰂄 Pin Configurations

SOT-23-5 Top view 5 4 Table 2

1 2 3 Pin No. Symbol Pin Description 1 VIN Input voltage pin 2 VSS GND pin 3 ON/OFF Shutdown pin *1 4 NC No connection 5 VOUT Output voltage pin *1. The NC pin is electrically open.

The NC pin can be connected to VIN or VSS.

Figure 2

󰂄 Absolute Maximum Ratings

Table 3

Item

Input voltage

Output voltage Power dissipation

Symbol VIN VON/OFF VOUT PD

Operating ambient temperature Topr Storage temperature Tstg *1. When mounted on board

[Mounted board]

(1) Board size : 114.3 mm × 76.2 mm × t1.6 mm (2) Board name : JEDEC STANDARD51-7

(Ta=25 °C unless otherwise specified)

Absolute Maximum Rating Unit

VSS–0.3 to VSS+12 V VSS–0.3 to VSS+12 V VSS–0.3 to VIN+0.3 V 300 (When not mounted on board) mW

*1600 mW –40 to +85 °C –40 to +125 °C

Caution The absolute maximum ratings are rated values exceeding which the product could suffer

physical damage. These values must therefore not be exceeded under any conditions.

Power Dissipation (PD) [mW]

70060050040030020010000 10015050Ambient Temperature(Ta) [°C] Figure 3 Power Dissipation of Package (When Mounted on Board)

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HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR S-L2980 Series

Rev.4.1_00

󰂄 Electrical Characteristics

Table 4

Item Symbol Output voltage*1 VOUT(E) Condition (Ta=25 °C unless otherwise specified)Test Min. Typ. Max. Unit circuit VOUT(S)VOUT(S) VOUT(S) × 0.98 × 1.02 V 1 VIN =VOUT(S)+1.0 V, IOUT=50 mA Output current*2 IOUT VIN ≥VOUT(S)+1.0 V 150*5 ⎯ ⎯ mA 3 *3Dropout voltage Vdrop IOUT = 50 mA 1.5 V ≤VOUT(S) ≤1.7 V⎯ 0.17 0.33 V 1 1.8 V ≤VOUT(S) ≤1.9 V⎯ 0.16 0.29 V 1 2.0 V ≤VOUT(S) ≤2.4 V⎯ 0.15 0.26 V 1 2.5 V ≤VOUT(S) ≤2.9 V⎯ 0.13 0.20 V 1 3.0 V ≤VOUT(S) ≤3.2 V⎯ 0.12 0.15 V 1 3.3 V ≤VOUT(S) ≤6.0 V⎯ 0.11 0.14 V 1 ΔVOUT 1 VOUT(S)+0.5 V ≤VIN ≤10 V, IOUT=50 mA 0.05 0.2 %/V 1 Line regulation ⎯ ΔVIN•VOUTLoad regulation ΔVOUT2 VIN=VOUT(S)+1.0 V, 1.0 mA ≤IOUT ≤80 mA ⎯ 12 40 mV 1 ΔVOUTppm/V=V+1.0 V, IOUT =50 mA, Output voltage INOUT(S)1 ±100 ⎯ ⎯ *4temperature coefficient ΔTa•VOUT–40°C ≤Ta ≤85°C °C VIN=VOUT(S)+1.0 V, ON/OFF pin=ON, Current consumption ⎯ 90 140 μA 2 ISS1 during operation No load VIN=VOUT(S)+1.0 V, ON/OFF pin =OFF, Current consumption ⎯ 0.1 1.0 μA 2 ISS2 when shutdown No load Input voltage VIN ⎯ 2.0 ⎯ 10 V ⎯ ON/OFF pin VIN=VOUT(S)+1.0 V, RL=1.0 kΩ 1.5 ⎯ ⎯ V 4 VSH input voltage “H” ON/OFF pin VIN=VOUT(S)+1.0 V, RL=1.0 kΩ ⎯ ⎯ 0.3 V 4 VSL input voltage “L” ON/OFF pin VIN=VOUT(S)+1.0 V, VON/OFF=7.0 V –0.1 ⎯ 0.1 μA 4 ISH input current “H” ON/OFF pin VIN=VOUT(S)+1.0 V, VON/OFF=0 V –0.1 ⎯ 0.1 μA 4 ISL input current “L” ⎯ 70 ⎯ dB 5 VIN=VOUT(S)+1.0 V, 1.5 V ≤VOUT(S) ≤3.3 V f = 1.0 kHz, 3.4 V ≤VOUT(S) ≤5.0 V⎯ 65 ⎯ dB 5 ΔVrip=0.5 V rms, IOUT=50 mA ⎯ 60 ⎯ dB 5 5.1 V ≤VOUT(S) ≤6.0 VRipple rejection *1. VOUT(S): Specified output voltage

VOUT(E): Actual output voltage at the fixed load

The output voltage when fixing IOUT(=50 mA) and inputting VOUT(S)+1.0 V

*2. Output current at which output voltage becomes 95 % of VOUT after gradually increasing output current. *3. Vdrop=VIN1−(VOUT×0.98)

VIN1 is the input voltage at which output voltage becomes 98 % of VOUT after gradually decreasing input voltage. *4. Temperature change ratio in the output voltage [mV/°C] is calculated by using the following equation.

ΔVOUT

[mV/°C]*1=VOUT(S) [V]*2×ΔVOUT[ppm/°C]*3÷1000 ΔTaΔTa•VOUT

*1. Temperature change ratio of the output voltage *2. Specified output voltage

*3. Output voltage temperature coefficient

*5. The output current can be supplied at least to this value.

Due to restrictions on the package power dissipation, this value may not be satisfied. Attention should be paid to the power dissipation of the package when the load is large. This specification is guaranteed by design. 6

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Rev.4.1_00

HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATORS-L2980 Series

Test Circuits

VIN VOUT+ AON/OFFVSSV + Set to power ON Figure 4

+AVIN VOUTON/OFFVSSSet to VINor GND Figure 5

VIN VOUT+ A ON/OFFVSSV + Set to power ON Figure 6

VIN VOUT+ A ON/OFF + VSSV RL

Figure 7

VIN VOUTON/OFF VSSV +RL Set to power ON

Figure 8

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󰂄

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HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR S-L2980 Series

Rev.4.1_00

󰂄 Standard Circuit

INPUT CIN*1 VIN VOUT CL*2OUTPUT ON/OFF VSS Single GNDGND *1. CIN is a capacitor used to stabilize input. *2. A ceramic capacitor of 1.0 μF or more can be used for CL, provided that A ceramic capacitor of 2.2 μF or more can be used for the product whose output voltage is 1.7 V or less. Figure 9

Caution The above connection diagram and constant will not guarantees successful operation.

Perform through evaluation using the actual application to set the constant.

󰂄 Application Conditions

Input capacitor (CIN): 0.47 μF or more

10 Ω or less Input series resistance (RIN):

1.0 μF or more*1 Output capacitor (CL):

Equivalent Series Resistance (ESR) for output capacitor: 10 Ω or less

*1. If the product whose output voltage is 1.7 V or less will be used, CL is 2.2 μF or more.

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Rev.4.1_00

HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATORS-L2980 Series

󰂄 Technical Terms

1. Low Dropout Voltage Regulator

The low dropout voltage regulator is a voltage regulator whose dropout voltage is low due to its built-in low on-resistance transistor.

2. Low ESR

Low ESR means the Equivalent Series Resistance of a capacitor is small. The low ESR ceramics output capacitor (CL) can be used in the S-L2980 Series. A capacitor whose ESR is 10Ω or less can be used.

3. Output Voltage (VOUT)

The accuracy of the output voltage is ensured at ± 2.0 % under the specified conditions of fixed input voltage*1, fixed output current, and fixed temperature.

*1. Differs depending upon the product.

Caution If the above conditions change, the output voltage value may vary and exceed the

accuracy range of the output voltage. Refer to the “󰂄 Electrical Characteristics” and “󰂄 Typical Characteristics” for details.

⎛ΔVOUT1⎞

4. Line Regulation ⎜⎟

•ΔVIN VOUT⎝⎠

Indicates the dependency of the output voltage on the input voltage. That is, the value shows how

much the output voltage changes due to a change in the input voltage with the output current remaining unchanged.

5. Load Regulation (ΔVOUT2)

Indicates the dependency of the output voltage on the output current. That is, the value shows how much the output voltage changes due to a change in the output current with the input voltage remaining unchanged.

6. Dropout Voltage (Vdrop)

Indicates the difference between the input voltage (VIN1) and output voltage when the output voltage falls to 98 % of the output voltage (VOUT(E)) by gradually decreasing the input voltage. Vdrop=VIN1–(VOUT(E)×0.98)

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HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR S-L2980 Series

Rev.4.1_00

7. Temperature Coefficient of Output Voltage

ΔVOUT

ΔTa •VOUT

The shadowed area in Figure 10 is the range where VOUT varies in the operating temperature range when the temperature coefficient of the output voltage is ±100 ppm/°C.

Example of S-L2980A28 Typ. product VOUT [V] +0.28 mV / °C ()VOUT(E)*1 −0.28 mV / °C −4025 85Ta [°C] *1. VOUT(E) is a mesured value of output voltage at 25 °C.

Figure 10

Temperature change ratio in the output voltage [mV/°C] is calculated by using the following equation.

ΔVOUT

[mV/°C]*1=VOUT(S) [V]*2×ΔVOUT[ppm/°C]*3÷1000 ΔTaΔTa•VOUT

*1. Temperature change ratio of the output voltage *2. Specified output voltage

*3. Output voltage temperature coefficient

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Rev.4.1_00

HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATORS-L2980 Series

󰂄 Operation

1. Basic Operation

Figure 11 shows the block diagram of the S-L2980 Series.

The error amplifier compares the reference voltage (Vref) with the Vfb, which is the output voltage resistance-divided by the feedback resistors Rs and Rf. It supplies the output transistor with the gate voltage necessary to ensure certain output voltage free of any fluctuations of input voltage and temperature.

VIN *1Current source Error amplifier Vref – + RfVfb Reference voltage circuit RsVOUT VSS *1. Parasitic diode

Figure 11

2. Output Transistor

The S-L2980 Series uses a low on-resistance P-channel MOS FET as the output transistor.

Be sure that VOUT does not exceed VIN+0.3 V to prevent the voltage regulator from being broken due to inverse current flowing from VOUT pin through a parasitic diode to VIN pin.

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HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR S-L2980 Series

Rev.4.1_00

3. Shutdown Pin (ON/OFF Pin)

This pin starts and stops the regulator.

When the ON/OFF pin is turned to the shutdown level, the operation of all internal circuits stops, the built-in P-channel MOS FET output transistor between VIN pin and VOUT pin is turned off to make

current consumption drastically reduced. The VOUT pin becomes the Vss level due to internally divided resistance of several hundreds kΩ between the VOUT pin and VSS pin.

Furthermore, the structure of the ON/OFF pin is as shown in Figure 12. Since the ON/OFF pin is neither pulled down nor pulled up internally, do not use it in the floating state. In addition, please note that current consumption increases if a voltage of 0.3 V to VIN–0.3 V is applied to the ON/OFF pin. When the ON/OFF pin is not used, connect it to the VIN pin in case the logic type is “A” and to the VSS pin in case of “B”.

Table 5 Logic type

A A B B

ON/OFF pin “H”: Power on “L”: Power off “H”: Power off “L”: Power on

VIN

Internal circuit Operating Stop Stop Operating VOUT pin voltage

Set value VSS level VSS level Set value Current consumption

ISS1 ISS2 ISS2 ISS1

ON/OFF VSS

Figure 12

󰂄 Selection of Output Capacitor (CL)

The S-L2980 series needs an output capacitor between VOUT pin and VSS pin for phase compensation. A ceramic capacitor whose capacitance is 1.0 μF or more*1 can be used. When an OS (Organic Semi-conductor) capacitor, a tantalum capacitor or an aluminum electrolyte capacitor is used, the capacitance should be 2.2 μF or more and the ESR should be 10 Ω or less.

The value of the output overshoot or undershoot transient response varies depending on the value of the output capacitor.

Sufficient evaluation including temperature dependency in the actual environment is needed.

*1. If the product whose output voltage is 1.7 V or less will be used, the capacitance should be 2.2 μF

or more.

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HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATORS-L2980 Series

󰂄 Precautions

• Wiring patterns for VIN pin, VOUT pin and GND pin should be designed to hold low impedance. When mounting an output capacitor between the VOUT and VSS pins (CL) and a capacitor for stabilizing the input between VIN and VSS pins (CIN), the distance from the capacitors to these pins should be as short as possible.

• Note that output voltage may increase when a series regulator is used at low load current (1.0 mA or less).

• Generally a series regulator may cause oscillation, depending on the selection of external parts. The

following conditions are recommended for this IC. However, be sure to perform sufficient evaluation under the actual usage conditions for selection, including evaluation of temperature characteristics. μF or more Input capacitor (CIN): 0.47 μF or more*1 Output capacitor (CL): 1.0

Equivalent Series Resistance (ESR): 10 Ω or less

Ω or less Input series resistance (RIN): 10

*1. If the product whose output voltage will be is 1.7 V or less is used, the capacitance should be 2.2 μF

or more.

• A voltage regulator may oscillate when the impedance of the power supply is high and the input capacitor is small or not connected.

• The application condition for input voltage, output voltage and load current should not exceed the package power dissipation.

• Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in electrostatic protection circuit.

• In determining output current attention should be paid to the output current value specified in the Table 4 for “󰂄 Electrical Characteristics” and the footnote *5.

• SII claims no responsibility for any and all disputes arising out of or in connection with any infringement of the products including this IC upon patents owned by a third party.

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HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR S-L2980 Series

Rev.4.1_00

󰂄 Typical Characteristics

1. Output voltage versus Output current (When load current increases) S-L2980A15 (Ta=25°C)

2.0

1.5 VOUT [V] 1.0 0.5 0.0

VIN=1.8 V 2.0 V 2.5 V3.0 V 400

VOUT [V] S-L2980A30 (Ta=25°C)

10 V

3.53.02.52.01.51.00.50.0

VIN=3.3 V3.5 V10 V5.0 V4.0 V0 100

200300 IOUT [mA]

5000100

200 300

400500

S-L2980A50 (Ta=25°C)

6.0 5.0 4.0 VOUT [V] 3.0 2.0 1.0 0.0 0

100

200300 IOUT [mA]

400

500

IOUT [mA]

VIN=5.3 V 5.5 V 10 V 7.0 V6.0 V

Remark In determining output current, attention

should be paid to the followings.

1) The minimum output current value and footnote *5 in the Table 4 for the “󰂄 Electrical Characteristics”. 2) The package power dissipation

2. Maximum output current versus Input voltage S-L2980A15 (Short-circuit protection included)

500 IOUT max. [mA] 400 300 200

Ta=–40°C

S-L2980A30 (Short-circuit protection included)

IOUT max. [mA] 50040030020010002

Ta=–40°C25°C 100

25°C 85°C 85°C 0 2 4 6 8 10

VIN [V]

S-L2980A50 (Short circuit protection included)

6 VIN [V]

IOUT max. [mA] 500 400 300 200 100 0

Ta=–40°C 25°C 85°C

Remark In determining output current, attention

should be paid to the followings.

1) The minimum output current value and footnote *5 in the Table 4 for the “󰂄 Electrical Characteristics”. 2) The package power dissipation

4 6

VIN [V]

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HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATORS-L2980 Series

3. Output voltage versus Input voltage S-L2980A15 (Ta=25°C)

S-L2980A30 (Ta=25°C)

1.60 3.153.10 1.55 IOUT=1.0 mA ]]VV3.05IOUT=1.0 mA [[ TTU1.50U3.00O OVV1.45 100 mA 2.95100 mA50 mA 50 mA1.4030 mA 2.902.85

30 mA 1.0 1.5 2.02.5 3.0 3.5

2.5

3.0

3.5 4.0 4.5

5.0

VIN [V]

S-L2980A50 (Ta=25°C)

5.20

5.10 ]VIOUT=1.0 mA [ TU5.00O V4.90 100 mA 50 mA4.8030 mA 4.5 5.0 5.56.0 6.5 7.0

VIN [V]

4. Dropout voltage versus Output voltage

S-L2980A15 S-L2980A30

600 400500 85°C

35085°C ]V25°C ]300V25°Cm400 m250[[ p300 p200oorrddV200 V150100 Ta=–40°C100Ta=–40°C0

500

I100

1500

I100

OUT [mA]

150

S-L2980A50

350

300

85°C ]V250 25°C m[200 pord150 V100 50 Ta=–40°C0

I100

150

OUT [mA]

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HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR S-L2980 Series

5. Output voltage versus Ambient Temperature

S-L2980A15 S-L2980A30

Rev.4.1_00

VOUT [V] 1.53 1.52 1.51 1.50 1.49 1.48

3.063.043.02

VOUT [V] 0

3.002.982.962.94

1.47

–50

100–500

100

Ta [°C] Ta [°C]

S-L2980A50

5.10

5.05

VOUT [V] 5.00 4.95 4.90

–50

0 50

100

Ta [°C]

7. Load regulation versus Ambient Temperature

6. Line regulation versus Ambient Temperature

S-L2980Axx S-L2980Axx CIN=4.7 μF, CL=10 μF C=4.7 μF, C=10 μF40 30 20 10 0

–50

INL40302010

ΔVOUT1 [mV] ΔVOUT2 [mV] S-L2980A30 S-L2980A15 S-L2980A50S-L2980A15 S-L2980A50S-L2980A300

0 50

100

–500

100

Ta [°C]

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HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATORS-L2980 Series

8. Threshold voltage of ON/OFF pin versus Input voltage

S-L2980A15

1.5 RL=100 Ω, CIN=4.7 μF, CL=10 μF 85°C 25°C Ta=–40°C V][ L1.0 SV / HSV0.5 85°C 25°C Ta=–40°C 0.0

VIN [V] 9. Current consumption versus Input voltage

S-L2980A15 S-L2980A30

100

100 80 80A]μ60A][ 25°C 85°C μ[6025°C 85°C 1 S1S40 Ta=–40°C STa=–40°C40 ISI20 20

0 0 2 4 6 8

6 8

VIN [V] VIN [V]

S-L2980A50

100 80 A]25°Cμ60 85°C[ 1SSI40 Ta=–40°C 20 0 0

V6 8

IN [V]

10. Ripple rejection

S-L2980A30 (Ta=25°C)

S-L2980A50 (Ta=25°C)

VIN=4.0 V, CL=2.2 μF VIN=6.0 V, CL=2.2 μF 100 100 ]]BBdd[[ 80 80noIOUT=1 mAnoIOUT=1 mAiittc60c60e ejjeeRR 40 40eellpppi20R 50 mA pi20R50 mA 0 10 100 1 k10 k 100 k1 M010 100 1 k 10 k 100 k1 MFrequency [Hz]

Frequency [Hz] Seiko Instruments Inc.

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HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR S-L2980 Series

Rev.4.1_00

󰂄 Reference Data

1. Transient Response Characteristics (S-L2980A30MC, Typical data, Ta=25°C)

Input voltage or Load current Overshoot Output voltage Undershoot 1-1. Power Source Fluctuation

Overshoot Undershoot

VIN, VON/OFF=5.0→4.0 V, IOUT=1.0 mAVIN, VON/OFF=4.0 →5.0 V, IOUT=1.0 mA

VINVOUT[V] VIN[V] 3.05 VOUT 3.0 CL=2.2 μF VOUT[V] 4.0 3.05VOUT 3.0CL=2.2 μF 4.0

TIME (20 μs / div.) TIME (20 μs / div.)

VIN[V]

3.10 5.0

VIN 3.105.0

Overshoot Undershoot VIN, VON/OFF=4.0→5.0 V, IOUT=50 mAVIN, VON/OFF=5.0→4.0 V, IOUT=50 mA

3.10 5.0

VIN3.105.04.0VOUT 3.0CL=2.2 μF CL=2.2 μF VOUT[V] VIN[V] VOUT[V] 3.05 VOUT 3.0 4.0

3.05TIME (20 μs / div.)

TIME (20 μs / div.)

VIN[V]

VIN 18

Seiko Instruments Inc.

元器件交易网www.cecb2b.com

Rev.4.1_00

HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATORS-L2980 Series

1-2. Load Fluctuation

Overshoot Undershoot VIN, VON/OFF=4.0 V, IOUT=1.0 mA→50 mAVIN, VON/OFF=4.0 V, IOUT=50 mA→1.0 mA

IOUT 3.1050

IOUT3.053.0VOUT1.0

VOUT[V] 3.05 VOUT 3.0 CL=2.2 μF 1.0

IOUT[mA] CL=2.2 μF TIME (20 μs / div.)

TIME (20 μs / div.)

IOUT[mA] 19

3.10 50 1-3. ON/OFF Switching (S-L2980A50MC, Typical data, Ta=25°C)

Overshoot Undershoot

VIN=6.0 V, RL=5.0 kΩ, CL=2.2 μFVIN=6.0 V, RL=5.0 kΩ, CL=2.2 μF

7 6 5 4 3 2 1 0

VOUT VON/OFF 763210

VOUTVON/OFFVON/OFF / VOUT [V] VOUT[V] VON/OFF / VOUT [V] TIME (20 μs / div.)

TIME (20 μs / div.)

Seiko Instruments Inc.

元器件交易网www.cecb2b.com

2.9±0.21.9±0.21230.16 -0.06 +0.10.95±0.10.4±0.1No. MP005-A-P-SD-1.2TITLENo.SCALEUNITSOT235-A-PKG DimensionsMP005-A-P-SD-1.2mmSeiko Instruments Inc.元器件交易网www.cecb2b.com

4.0±0.1(10 pitches:40.0±0.2)+0.1ø1.5-02.0±0.050.25±0.1ø1.0-0+0.24.0±0.11.4±0.23.2±0.232145Feed directionNo. MP005-A-C-SD-2.1TITLENo.SCALEUNITSOT235-A-Carrier TapeMP005-A-C-SD-2.1mmSeiko Instruments Inc.元器件交易网www.cecb2b.com

12.5max.Enlarged drawing in the central partø13±0.29.0±0.3(60°)(60°)No. MP005-A-R-SD-1.1TITLENo.SCALEUNITmmSOT235-A-ReelMP005-A-R-SD-1.1QTY.3,000Seiko Instruments Inc.元器件交易网www.cecb2b.com

• The information described herein is subject to change without notice.• Seiko Instruments Inc. is not responsible for any problems caused by circuits or diagrams described hereinwhose related industrial properties, patents, or other rights belong to third parties. The application circuitexamples explain typical applications of the products, and do not guarantee the success of any specificmass-production design.• When the products described herein are regulated products subject to the Wassenaar Arrangement or otheragreements, they may not be exported without authorization from the appropriate governmental authority.• Use of the information described herein for other purposes and/or reproduction or copying without theexpress permission of Seiko Instruments Inc. is strictly prohibited.• The products described herein cannot be used as part of any device or equipment affecting the humanbody, such as exercise equipment, medical equipment, security systems, gas equipment, or any apparatusinstalled in airplanes and other vehicles, without prior written permission of Seiko Instruments Inc.• Although Seiko Instruments Inc. exerts the greatest possible effort to ensure high quality and reliability, thefailure or malfunction of semiconductor products may occur. The user of these products should thereforegive thorough consideration to safety design, including redundancy, fire-prevention measures, andmalfunction prevention, to prevent any accidents, fires, or community damage that may ensue.

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