A4059
BATTERY MANAGEMENT
AiT Semiconductor Inc.
www.ait-ic.com
STANDALONE LINEAR LI-ION BATTERY CHARGER
WITH THERMAL REGULATION
Pin #
5
Symbol
BAT
Function
Make the battery's positive terminal connected to this pin. When the power supply
voltage lower than the threshold latch voltage or sleep mode voltage, BAT pin
current is less than 2μA. BAT pin provide the battery charge current and constant
voltage charging voltage.
When charging end, DONE pin is pulled low by internal switch represents that
charge has ended; otherwise DONE pin is high impedance state.
6
7
DONE
CHRG
When the charger to the battery charging, CHRG pin is pulled low by the internal
switch, represents charging being; otherwise CHRG pin is in high impedance state.
This pin can test Kelvin battery voltage, and thus precisely modulated constant
voltage battery charging voltage, avoiding the positive from the battery to the BAT
pin A4059 or contact resistance between the resistance wire and other parasitic
resistance of the charge. If the FB pin and the BAT pin is an indirect one resistor,
users can adjust the constant charging voltage.
8
FB
ABSOLUTE MAXIMUM RATINGS
VCC, Input Supply Voltage
VPROG, ISET pin Voltage
VBAT, BAT pin Voltage
VSS-0.3V～VSS+7V
VSS-0.3V～Vcc+0.3V
Vss-0.3V～6V
VSS-0.3V～VSS+7V
VSS-0.3V～VSS+7V
1500mA
VDONE, DONE pin Voltage
VCHRG, CHAG pin Voltage
IBAT, BAT pin Current
IPROG, ISET pin Current
1500μA
TOPA, Operating Ambient Temperature
-40°C～+85°C
-65°C～+125°C
TSTR, Storage Temperature
Stress beyond above listed ꢀAbsolute Maximum Ratingsꢁ may lead permanent damage to the device. These are stress ratings only and
operations of the device at these or any other conditions beyond those indicated in the operational sections of the specifications are not
implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
REV1.0 - OCT 2013 RELEASED -
- 3 -
AITSEMI [ AiT Semiconductor ]
