SC5205 Просмотр технического описания (PDF) - Semtech Corporation

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SC5205

150mA Ultra Low Dropout, Low Noise Micropower Linear Regulator

Semtech Corporation 

SC5205

POWER MANAGEMENT

Electrical Characteristics (Cont.)

PRELIMINARY

Unless specified: VIN = VO(NOM) + 1V, IO = 100µA, CBYP = 10nF, CO = 1µF, VENABLE ³ 1.8V. Values in bold apply over the full operating temperature range.

Parameter

Symbol

Test Conditions

Min Typ Max Units

Ground Pin Current

IGND

IO = 100µA

80 125 µA

150

IO = 50mA

600 1000 µA

1500

IO = 100mA

1600 2100 µA

2600

IO = 150mA

2750 3300 µA

4000

Current Limit(2)

Ripple Rejection Ratio

Thermal Regulation

RMS Output Noise

Enable Input Voltage

ILIM

PSRR

∆VO

PD

en

VEN

VEN < 0.4V (shutdown)

VO > (VO(NOM) - 5%)

IO = 100µA, f = 100Hz

IO = 50mA, CBYP = 10nF, CO = 2.2µF,

BW = 10Hz to 99kHz

Low = O/P OFF

High = O/P ON

0.01 5

300 500

50

0.05

µA

mA

dB

%/W

210

nV

Hz

0.4

V

1.8

Enable Input Current

IEN

VEN £ 0.4V

VEN ³ 1.8V

-0.01 -1

µA

5

10

µA

20

Notes:

(1) Defined as the input to output differential at which the output voltage drops to 2% below the value measured at

a differential of 1V.

(2) As the load resistance further decreases, the SC5205 folds back the output current to approximately 150mA at

VO = 0V.

ã 2001 Semtech Corp.

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