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ACE Technology

ACE4101 Datasheet Preview

ACE4101 Datasheet

Li-ion Switching Charger IC

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ACE4101
Max. 1.6A Li-ion Switching Charger IC
Description
The ACE4101 is a 1.6A LiIon battery switching charger intended for 5V adapters. Low power
dissipation, an internal MOSFET and its compact package with minimum external components
requirement makes the ACE4101 ideal for portable applications. The ACE4101 includes complete charge
termination circuitry, automatic recharge and a ±1% 4.2V/4.35V float voltage.
External sense resistor and Reverse diode is not need. Buildin thermal feedback mechanism regulates
the charge current to control the die temperature during high power operation or at elevated ambient
temperature.
Battery charge current, charge timeout and end-ofcharge indication parameters can program by
external components. Additional features include shorted cell detection and overvoltage protection.
Features
Very Low Power Dissipation
1.6A Maximum Charge Current
Standalone Capability with no Requirement of External MOSFET, Sense Resistor or Blocking Diode
ConstantCurrent/ConstantVoltage Operation with Thermal Regulation to Maximize Charge Rate
Without Risk of Overheating
Charges Single Cell LiIon Batteries Directly from USB Port
Drainage Charge Current Thermal Regulation Status Outputs for LED or System Interface
Preset 4.2V/4.35V float Voltage with ±1% Accuracy
Automatic Recharge
Application
Cellular Telephones, PDA, MP3 Players
Charging Docks and Cradles
Handheld BatteryPowered Devices
Handheld Computers
Typical Application
ACE4101
Device parameter should be select as typical application
VER 1.4 1




ACE Technology

ACE4101 Datasheet Preview

ACE4101 Datasheet

Li-ion Switching Charger IC

No Preview Available !

ACE4101
Max. 1.6A Li-ion Switching Charger IC
Absolute Maximum Ratings
Parameter
Symbol Max Unit
Input voltage
Operating Junction Temperature
Ambient Temperature
Storage temperature
VIN 6.5 V
TJ 125 OC
TA -40 ~ 85 OC
TS - 55 ~ 150 OC
ESD (HBM)
>2000 V
Note: Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may affect device reliability.
Packaging Type
DFN3*3-10
CHRG 1
ISET 2
Ctrl 3
EN 4
FB 5
10 BAT
9 CHRI
8 GND
7 SW
6 VIN
DFN3*3-10 Description
Function
OpenDrain Charge Status Output. When the battery is charging, the CHRG pin is
1
CHRG
pulled low by an internal Nchannel MOSFET. When the charge cycle is completed,
hen the ACE4101 detects an under voltage lockout condition, CHRG is forced high
impedance
Charge Current Program, Monitor the charge current and Shutdown. This pin set
2
ISET
to 1V in constantcurrent mode. The charge current is programmed by connecting a
1% resistor, RISET, to GND pin
3 Ctrl
Sense Feedback Voltage Pin
Enable Input Pin. Pulling the EN pin high places the ACE4101 into a low power
4 EN state where the BAT drain current drops to less than 3μA and the supply current is
reduced to less than 50μA. For normal operation, pull the pin low
5 FB
Battery Feedback Voltage
Positive Supply Voltage Input. This pin connects to the power devices inside the
6
VIIN
chip. VIN ranges from 4V to 5.5V for normal operation. Operation down to the under
voltage lockout threshold is allowed with current limited wall adapters. Decouple
with a 10μF or larger surface mounted ceramic capacitor
Switch Node Connection. This pin connects to the drains of the internal main and
7 SE
synchronous power MOSFET switches. Connect to external inductor
8 GND
Ground
9 CHRIN
Power Path Output Voltage
10
BAT
Battery Charger Output Terminal. Connect a 22μF ceramic chip capacitor between
BAT and PGND to keep the ripple voltage small
VER 1.4 2


Part Number ACE4101
Description Li-ion Switching Charger IC
Maker ACE Technology
Total Page 9 Pages
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