LDO53 datasheet(2/4 Pages) STMICROELECTRONICS

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LDO_53

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ELECTRICAL CHARACTERISTICS

3V < VIN < 5.5V, -30°C < T < +85°C, VREF = 2.8V, 0.8µF < COUT < 1.2µF, 20mΩ < ESR < 0.6Ω.

100

µA < I

LOAD < 40mA.

Typical case : VIN = 4V, T = 25°C, IOUT = 20mA.

Notes: 1. Above characteristics are given for 3V minimum input operating range voltage, but regulator is

operational with 2.7V minimum input voltage.

2. All parameters are guaranteed with 170mV Dropout voltage.

Parameter

Symbol

Test Condition

Min

Typ

Max

Unit

Input Voltage Range (Note 1)

VIN

5,5

Output Voltage

VOUT

2,8

Output Voltage Accuracy

-3

Output current

IOUT

0,1

PMOS Output Resistance

RON

0,4

Ω

Dropout Voltage

∆V

OUT = 50mV,

ILOAD = 40mA

(Note 2)

170

Quiescent current

ILOAD = 100µA20

µA

ILOAD = 40mA

100

120

Power down mode quiescent current

IQPDN

Power down active

µA

Power Supply Rejection Ratio

PSRR

f < 10KHz

Load Regulation

Ldr

Line Regulation

Lir

ILOAD = 40mA,

VIN = 3V to 5.1V,

VOUT = 2.8V

Line Transcient

Lirt

VOUT = 2.8V,

IOUT = 40mA,

∆V

IN = 300mV

tRISE = tFALL = 10µs

3mV

Load Transcient

Ldtr

VOUT = 2.8V,

tRISE = tFALL = 10µs

100

µA < I

LOAD < 40mA

3mV

Recovery time

µs

Output decoupling capacitor

COUT

µF

Settling time

(from power down to active mode)

VOUT = 2.8V, COUT = 1µF20

µs

Short Circuit Current Limit

ISHORT

200

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