ACT5830 datasheet(31/41 Pages) ACTIVE-SEMI

31 / 41 page

LDO7

ACT5830

Rev PrB, 05-Mar-08

Innovative Power

- 31 -

www.active-semi.com

ActivePMU

TM is a trademark of Active-Semi.

2CTM is a trademark of Philips Electronics.

ELECTRICAL CHARACTERISTICS

(VIN1 = 3.6V, COUT7 = 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

VIN1 Input Rising

2.9

3.1

UVLO Hysteresis

VIN1 Input Falling

0.1

Output Voltage Accuracy

TA = 25°C

VNOM < 1.3V, IOUT = 10mA

-2.4

VNOM ≥ 1.3V, IOUT = 10mA

-1.2

VNOM < 1.3V, IOUT = 10mA

-5

VNOM ≥ 1.3V, IOUT = 10mA

-2.5

Line Regulation Error

VIN7 = Max (VNOM1 + 0.5V, 3.1V) to 5.5V

Load Regulation Error

IOUT7 = 1mA to 250mA

-0.004

%/mA

Power Supply Rejection Ratio

f = 1kHz, IOUT7 = 250mA, COUT7 = 1µF

f = 10kHz, IOUT7 = 250mA, COUT7 = 1µF

Supply Current per Output

LDO7 Enabled

µA

LDO7 Disabled

Dropout Voltage2

IOUT7 = 100mA

100

200

Output Current

250

Current Limit

VOUT7 = 95% of Regulation Voltage

275

410

Current Limit Short Circuit

Foldback

VOUT7 = 0V

0.45 x ILIM

Internal Soft-Start

100

µs

Power Good Flag High

Threshold

VOUT7, Hysteresis = -1%

Output Noise

COUT7 = 10µF, f = 10Hz to 100kHz

µVRMS

Stable COUT7

µF

TA = -40°C to 85°C

: VNOM refers to the nominal output voltage level for LDO7 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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