SL2980 datasheet(6/23 Pages) SII

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HIGH RIPPLE-REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR

S-L2980 Series

Rev.5.1_00

Seiko Instruments Inc.

Electrical Characteristics

Table 4

(Ta=25

°C unless otherwise specified)

Item

Symbol

Condition

Min.

Typ.

Max.

Unit

Test

circuit

Output voltage

VOUT(E)

VIN =VOUT(S)+1.0 V, IOUT=50 mA

VOUT(S)

× 0.98

VOUT(S) VOUT(S)

× 1.02

Output current

IOUT

VIN ≥VOUT(S)+1.0 V

150

⎯

Dropout voltage

Vdrop

IOUT = 50 mA

1.5 V

≤VOUT(S) ≤1.7 V

⎯

0.17

0.33

1.8 V

≤VOUT(S) ≤1.9 V

⎯

0.16

0.29

2.0 V

≤VOUT(S) ≤2.4 V

⎯

0.15

0.26

2.5 V

≤VOUT(S) ≤2.9 V

⎯

0.13

0.20

3.0 V

≤VOUT(S) ≤3.2 V

⎯

0.12

0.15

3.3 V

≤VOUT(S) ≤6.0 V

⎯

0.11

0.14

Line regulation

OUT

•

VOUT(S)+0.5 V ≤VIN ≤10 V, IOUT=50 mA

⎯

0.05

0.2

%/V

Load regulation

ΔVOUT2

VIN=VOUT(S)+1.0 V, 1.0 mA ≤IOUT ≤80 mA

⎯

Output voltage

temperature coefficient

OUT

•

VIN=VOUT(S)+1.0 V, IOUT =50 mA,

–40

°C ≤Ta ≤85°C

⎯

±100

⎯

ppm/

°C

Current consumption

during operation

ISS1

VIN=VOUT(S)+1.0 V, ON/OFF pin=ON,

No load

⎯

140

μA

Current consumption

during power-off

ISS2

VIN=VOUT(S)+1.0 V, ON/OFF pin =OFF,

No load

⎯

0.1

1.0

μA

Input voltage

VIN

⎯

2.0

⎯

ON/OFF pin

input voltage “H”

VSH

VIN=VOUT(S)+1.0 V, RL=1.0 kΩ

1.5

⎯

ON/OFF pin

input voltage “L”

VSL

VIN=VOUT(S)+1.0 V, RL=1.0 kΩ

⎯

0.3

ON/OFF pin

input current “H”

ISH

VIN=VOUT(S)+1.0 V, VON/OFF=7.0 V

–0.1

⎯

0.1

μA

ON/OFF pin

input current “L”

ISL

VIN=VOUT(S)+1.0 V, VON/OFF=0 V

–0.1

⎯

0.1

μA

Ripple rejection

1.5 V

≤VOUT(S) ≤3.3 V

⎯

3.4 V

≤VOUT(S) ≤5.0 V

⎯

VIN=VOUT(S)+1.0 V,

f = 1.0 kHz,

ΔVrip=0.5 V rms,

IOUT=50 mA

5.1 V

≤VOUT(S) ≤6.0 V

⎯

*1. VOUT(S): Set 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

ΔTa []

mV/°C

*1 = V

OUT(S) []

*2 ×

ΔVOUT

ΔTa•VOUT []

ppm/°C

*3 ÷ 1000

*1. Temperature change ratio of the output voltage

*2. Set 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.

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