RT9516 Datasheet, PDF (1/11 Pages) Richtek Technology Corporation – Linear Single Cell Li-lon Battery Charger with Single Input Supply for Portable Applications

RT9516
Linear Single Cell Li-lon Battery Charger with Single Input
Supply for Portable Applications
General Description
The RT9516 is a fully integrated low cost single-cell
Li-Ion battery charger ideal for portable applications. The
RT9516 is capable of being powered up from AC adapter
and USB (Universal Serial Bus) port inputs. The RT9516
enters sleep mode when supplies are removed. The
RT9516 optimizes the charging task by using a control
algorithm including preconditioning mode, fast charge
mode and constant voltage mode. The charging task will
keep in constant voltage mode to hold the battery in a full
charge condition. The charge current can be programmed
with an external resister. The internal thermal feedback
circuitry regulates the die temperature to optimize the
charge rate for all ambient temperatures. The RT9516
features 28V maximum rating voltages for VIN. The other
features are under voltage protection, over voltage
protection for AC adapter supply.
RT9516 also provide a booting assistant circuit which
detect input source and battery connection condition and
provide an output signal (ABO) for system booting.
The RT9516 is available in WDFN-8L 2x2 tiny package to
achieve best solution for PCB space and total BOM cost
saving considerations.
Features
z 28V Maximum Rating for AC Adapter
z Internal Integrated Power MOSFETs
z AC Adapter Power Good Status Indicator
z Programmed Charging Current
z Output for Auto-Booting
z Under Voltage Protection
z Over Voltage Protection
z Thermal Feedback Optimizing Charge Rate
z RoHS Compliant and Halogen Free
Applications
z Cellular Phones
z Digital Cameras
z PDAs and Smart Phones
z Probable Instruments
Pin Configurations
(TOP VIEW)
VIN 1
GND 2
ISET 3
ABI 4
8 BATT
7 PGOOD
6 EN
9 _{5 ABO}
WDFN-8L 2x2
Ordering Information
RT9516
Package Type
QW : WDFN-8L 2x2 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Note :
Richtek products are :
` RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
` Suitable for use in SnPb or Pb-free soldering processes.
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
DS9516-01 April 2011
www.richtek.com
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