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APL5523_09

Dual-Channel, 3.3V/500mA and 1.8V/300mA Linear Regulator

Anpec Electronics 

APL5523

Electrical Characteristics (Cont.)

Unless otherwise noted these specifications apply over full temperature, CIN=1µF, COUT1=4.7µF, COUT2=2.2µF, TJ=0 to 125°C. Typical

values refer to TJ=25°C.

Symbol

Parameter

Test Conditions

APL5523

Unit

Min. Typ. Max.

Output2 (300mA)

VOUT Output Voltage

ILIMIT Circuit Current Limit

IOUT Load Current

REGLINE Line Regulation

REGLOAD Load Regulation

PSRR Ripple Rejection

VDROP Dropout Voltage (Note1)

COUT Output Capacitor

ESR

VIN=5V

VIN=VOUT+1V

VIN=VOUT+1V

VOUT+1V< VCC<6.0V, IOUT=1mA

VIN =VOUT+1V, 0mA< IOUT < IMAX

F≤1kHz, 1Vpp at IOUT=50mA

IOUT =300mA

VOUT –2% 1.8 VOUT +2% V

-

900

-

mA

300

-

-

mA

-

4

10

mV

-

20

40

mV

45

55

-

dB

-

0.9

1

V

-

2.2

-

µF

0.01

0.1

1

Ohm

Note 1: Dropout voltage definition : VIN-VOUT when VOUT is 2% below the value of VOUT for VIN = VOUT+1V.

Pin Description

PIN

NO.

NAME

1

VOUT1

2

VIN

3

VIN

4

VOUT2

5

GND

6

GND

7

GND

8

GND

I/O

FUNCTION

O VOUT1 output Voltage 3.3V. Sources up to 500mA.

I

Supply Voltage.

I

Supply Voltage.

O VOUT2 output Voltage 1.8V. Sources up to 300mA.

Ground also functions as a heatsink. Solder to the ground plane to maximize thermal

dissipation

Block Diagram

VIN

Thermal

Shutdown

VOUT1

MOS

Driver

With

Iimit

_

Error

AMP +

Reference

Voltage

_

Error

AMP

+

MOS

Driver

With

Iimit

VOUT2

GND

Copyright © ANPEC Electronics Corp.

3

Rev. A.2 - Jan., 2009

1

www.anpec.com.tw

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