APL3207 查看數據表（PDF） - Anpec Electronics

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APL3207

Li+ Battery Charger and Low Dropout Linear Regulator Combo

Anpec Electronics 

APL3207

Operating Waveforms (Cont.)

(Refer to the section “Typical Application Circuits”, the test condition is VLDOIN=5V, TA=25oC, unless otherwise specified)

LDO Load Transient Response

VLDOOUT

1

3

ILDO=1mA to 150mA

VLDOIN = 5V

CH1: VLDOOUT, 50mV/div, AC

CH3: ILDO, 50mA/div, DC

TIME: 0.5ms/div

Pin Description

PIN

NO.

NAME

1

VIN

2

BATT

4

LDOIN

5

NC

6,7

LDOOUT

8

STAT

3,9

GND

10

ISET

Bottom

Pad

GND

FUNCTION

Charger Input Supply Pin. Provides power to the charger, VIN can range from 4.35V to 6.5V and should

be bypassed with at least a 1µF capacitor.

Charger Output Pin. Connect this pin to the positive terminal of a Li+ battery.

LDO Regulator Input Supply Pin. Provides power to the regulator, VLDOIN can range from 3.6V to 6.5V

and should be bypassed with at least a 1µF capacitor.

No Connection.

LDO Regulator Output. Fixed at 3.3V output, sourcing up to 150mA. The pin6 and pin7 must be

connected together.

Open-Drain Charge Status Output Pin. When the battery is charging, the STAT pin is pulled low by an

internal switch. In other states the STAT pin is in a high impedance state.

Ground. Pin3 and pin9 must be connected together.

Charging Current Setting and Shutdown Pin. Connecting a resistor from this pin to GND set the charge

current when the VIN is powering the charger. Disconnecting the RSET from GND allows an internal

2.5µA current to pull the ISET pin high, and when the ISET pin voltage exceeds the shutdown

threshold voltage, the charger enters shutdown mode.

Ground. Connect the bottom side metal pad to back side ground plane through several vias to improve

power dissipation.

Copyright © ANPEC Electronics Corp.

9

Rev. A.3 - Sep., 2012

www.anpec.com.tw

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