LDO57 datasheet(3/4 Pages) STMICROELECTRONICS

Part #	LDO57

Description	IP Library: High Output Current, Low power, 400mA Low Dropout Voltage Regulator

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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LDO_57

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1000000

-70

-60

-50

-40

-30

-20

FREQUENCY (Hz)

150m V

170m V

200m V

2V

ELECTRICAL CHARACTERISTICS : (Stand-by mode)

3V < VIN < 5.5V, -30°C < TA < +85°C, VREF = 2.8V, COUT = 4.7µF ±20%, 20mΩ < ESR < 0.6Ω,

ILOAD =500µA.

Typical case : VIN = 4V, Ambient temperature, ILOAD = 500µA.

TYPCIAL CHARACTERISTICS

Parameter

Symbol

Test Condition

Min

Typ

Max

Unit

Output current in stand-by mode

IOUTSTDBY

500

µA

Quiescent Current in stand-by mode

ISTDBY

ILOAD = 500µA20

30

Power Supply Rejection Ratio

in stand-by mode

PSRRSTY

f = 10KHz

35

45

dB

Line Regulation in stand-by mode

LirSTDBY

ILOAD = 500µA,

VIN = 2.9V to 5.5V

26

mV

Load Regulation

LdrSTDBY

ILOAD = 100µA - 500µA

50

55

mV

Figure 7 : PSRR vs Frequency

for Various Voltage Drop

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