4A Ultra-Low-Input-Voltage

LDO Regulators

_______________________________________________________________________________________

3

Note 2: Specifications to -40

°C are guaranteed by design and not production tested.

Note 3: Minimum supply voltage for output accuracy must be at least 1.425V.

ELECTRICAL CHARACTERISTICS (continued)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

POK Output Current, High

0.001

1µA

POK Delay Time

From FB rising to POK high

25

50

100

µs

EN

EN rising

1.25

Enable Input Threshold

EN falling

0.4

V

Enable Input Bias Current

-1

+1

µA

THERMAL SHUTDOWN

+160

Thermal-Shutdown Threshold

Output on and off

+115

°C

POR

FB Power-On Reset Fault Threshold

440

450

460

mV

POR Output Voltage, Low

25

200

mV

POR Output Current, High

0.001

1µA

POR Rising Delay Time

FB rising to POR high impedance

100

140

200

ms

SOFT-START

Soft-Start Time

100

µs

Typical Operating Characteristics

OUTPUT VOLTAGE vs. INPUT VOLTAGE

INPUT VOLTAGE (V)

3.0

2.4

1.8

1.35

1.40

1.45

1.50

1.55

1.30

1.2

3.6

°C

°C

°C

OUTPUT VOLTAGE vs. LOAD CURRENT

LOAD CURRENT (A)

3

2

1

1.4980

1.4985

1.4990

1.4995

1.5000

1.5005

1.5010

1.5015

1.5020

1.5025

1.4975

04

°C

°C

°C

GND CURRENT vs. INPUT VOLTAGE

INPUT VOLTAGE (V)

2.4

1.2

100

200

300

400

500

600

700

800

900

1000

0

0

3.6