SC2982CSK-3.0.TR 데이터 시트보기 (PDF) - Semtech Corporation

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SC2982CSK-3.0.TR

50mA Ultra Low Dropout, Low Noise Micropower Linear Regulator

Semtech Corporation 

SC2982

POWER MANAGEMENT

PRELIMINARY

Electrical Characteristics

Unless specified: VIN = VO(NOM) + 1V, IO = 100µA, CO = 1µF, VEN ³ 1.8V. Values in bold apply over the full operating temperature range.

Parameter

Symbol

Test Conditions

Min Typ Max Units

Current Limit(2)

Ripple Rejection Ratio

Thermal Regulation

RMS Output Noise

Enable Input Voltage

Enable Input Current

ILIM

PSRR

∆VO (%)

PD

eno

VEN

IEN

VO > (VO(NOM) - 5%)

IO = 100µA, f = 100Hz, CBYP = 10nF,

CO = 10µF

BW = 300Hz to 50kHz, IO = 1mA,

CBYP = 10nF, CO = 10µF

Low = O/P OFF

High = O/P ON

VEN £ 0.4V

VEN ³ 1.8V

200

mA

50

db

0.05

%/W

30

µVrms

0.4

V

1.8

V

-0.01 -1

µA

5

10

µA

20

Notes:

(1) Defined as the input to output differential at which the output voltage drops 100mV below the value measured

at a differential of 1V.

(2) As the load resistance further decreases, the SC2982 folds back the output current to approximately 150mA at

VO = 0V.

ã 2001 Semtech Corp.

3

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