ACT5830 datasheet(28/41 Pages) ACTIVE-SEMI

28 / 41 page

LDO4

ACT5830

Rev PrB, 05-Mar-08

Innovative Power

- 28 -

www.active-semi.com

ActivePMU

TM is a trademark of Active-Semi.

2CTM is a trademark of Philips Electronics.

ELECTRICAL CHARACTERISTICS

(VIN2 = 3.6V, COUT4 = 1µF, TA = 25°C unless otherwise specified.)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Input Supply Range

3.1

5.5

Input Under Voltage Lockout

VIN2 Input Rising

2.9

3.1

UVLO Hysteresis

VIN2 Input Falling

0.1

Output Voltage Accuracy

TA = 25°C

-1.2

TA = -40°C to 85°C

-2.5

Line Regulation Error

VIN4 = Max (VNOM1 + 0.5V, 3.1V) to 5.5V

Load Regulation Error

IOUT4 = 1mA to 100mA

-0.004

%/mA

Power Supply Rejection Ratio

f = 1kHz, IOUT4 = 100mA, COUT4 = 1µF

f = 10kHz, IOUT4 = 100mA, COUT4 = 1µF

Supply Current per Output

LDO4 Enabled

µA

LDO4 Disabled

Dropout Voltage2

IOUT4 = 50mA

100

200

Output Current

100

Current Limit

VOUT4 = 95% of Regulation Voltage

115

180

Current Limit Short Circuit Foldback VOUT4 = 0V

0.45 x ILIM

Internal Soft-Start

100

µs

Power Good Flag High Threshold

VOUT4, Hysteresis = -1%

Output Noise

COUT4 = 10µF, f = 10Hz to 100kHz

µVRMS

Stable COUT4

µF

: VNOM refers to the nominal output voltage level for LDO4 as defined by the Ordering Information section.

: Dropout Voltage is defined as the different voltage between input and output when the output voltage drops 100mV below the regu-

lation voltage at 1V differential voltage.

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