AP1623SA datasheet(3/6 Pages) ANACHIP

3 / 6 page

AP1623

PWM Control Step-Down Switching Regulator-Controllers

Anachip Corp.

www.anachip.com.tw

Rev. 0.1 Feb 10, 2004

3/6

Electrical Characteristics (VIN = 5V, T

a=25°C, unless otherwise specified)

Symbol

Parameter

Conditions

Min.

Typ.

Max.

Unit

VOUT(E) Output voltage

VOUT(S)

×0.976

VOUT(S)

×1.024

VIN

Input voltage

AP1623 Series

2.5

ISW

Switch Current

Duty = 50%

ISS1

Current consumption 1

VOUT=VOUT(S) ×1.2

µA

ISSS

Current consumption during power off

VON/OFF =0V

0.5

µA

∆VOUT1 Line regulation

VIN=VOUT(S) ×1.2 to ×1.4

∆VOUT2 Load regulation

Load current=10µA to IOUT(See

below) ×1.25

∆VOUT

/∆Ta

Output voltage temperature coefficient Ta= -40°C to 85°C

±VOUT(S)

×5E-5

V/°C

VOUT(S)≥ 2.5V

153

180

207

fOSC

Oscillation frequency

Measure

waveform at

SW pin

VOUT(S)≤ 2.4V

144

180

216

KHz

VSH

Evaluate oscillation at SW pin

1.8

VSL

Power-Off pin input voltage

Evaluate oscillation stop at SW

0.3

ISH

-0.1

0.1

µA

ISL

Power-Off pin input leakage current

-0.1

0.1

µA

TSS

Soft-Start time

4.0

8.0

16.0

EFFI

Efficiency

VIN = 5V, VOUT = 2.5V IOUT = 1A

Conditions:

The recommended components are connected to the IC, unless otherwise indicated. VIN=VOUT(S) ×1.2[V],

IOUT=120[mA] (VIN=2.5V, if VOUT(S) ≤ 2.0V.)

Peripheral components:

Coil

: Sumida Electric Co., Ltd. CD54 (47µH).

Diode

: Matsushita Electronics Corporation MA720(Schottky type).

Capacitor

: Matsushita Electronics Corporation TE (16V, 22µF tantalum type).

The power-off pin is connected to VIN.

Notes:

The output voltage indicated above represents a typical output voltage set up. These specifications apply in

common to AP1623, unless otherwise noted.

*1 VOUT(S) Specified output voltage value.

VOUT(E) Actual output voltage value.

*2 VIN=2.5V to 2.94V, if VOUT(S) ≤ 2.0V.

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