A4052
BATTERY MANAGEMENT
AiT Semiconductor Inc.
www.ait-ic.com
1A IS COMPATIBLE WITH THE USB INTERFACE,
LINEAR BATTERY MANAGEMENT CHIP
DESCRIPTION
FEATURES
The A4052 is a constant- current / constant- voltage
charger circuit for single cell lithium-ion batteries.
The device includes an internal power transistor,
does not need external current sense resistor and
blocking diode in applications. A4052 requires
minimal external components, and meet the USB
bus specification, is very suitable for portable
applications in the field.
Thermal modulation circuit can control the internal
chip temperature in a safe range when the device
power dissipation be relatively large or the ambient
temperature be higher. Within a fixed constant
charge voltage 4.2V, can also be adjusted by an
external resistor.
When the input voltage (AC adapter or USB power
supply) power is lost, A4052 automatically enters a
low power sleep mode, then the battery current
consumption is less than 0.1μA. Built-in protection
circuits against irrigation, when the battery voltage
is higher than the input voltage, automatically turn
off built-in power MOSFET. Other features include
low input voltage latch, automatic recharge, the
battery temperature monitoring, Built - in OVP
protection and charge status / charge status
indication functions.
Programmable charge current up to 1A
No MOSFET, sense resistor or blocking diode
required
Complete linear charger in small package for
single cell lithium-ion batteries
Constant-current/constant-voltage operation
with thermal regulation to maximize charge
rate without risk of overheating
Charges single cell li-ion batteries directly from
USB port
Preset 4.2V charge voltage with 1% accuracy
Monitor output charge current
Automatic recharge
Charge status output pin
1/10 charge current termination
40μA supply current in shutdown
2.9V trickle charge threshold
Soft-Start limits inrush current
OVP protection function , the input is higher
than 6.8V, stop charging
Output with protection against anti-irrigation
When you unplug VIN , the IC does not
consume battery power
Available in PSOP8 Package
APPLICATION
The A4052 is available in PSOP8 package.
Mobile phones
Digital Cameras
MP4 Player
Bluetooth applications
Electronic Dictionary
portable devices
all kinds of charger
Mobile power
ORDERING INFORMATION
Package Type
PSOP8
Part Number
A4052MP8R
A4052MP8VR
MP8
V: Halogen free Package
R: Tape & Reel
Note
SPQ: 3K/Reel
AiT provides all RoHS products
Suffix ꢀ V ꢀ means Halogen free Package
REV1.0
- OCT 2013 RELEASED -
- 1 -
AITSEMI [ AiT Semiconductor ]
