RT9465 Datasheet, PDF (1/28 Pages) Richtek Technology Corporation – 3A Single Cell Li-on Battery Slave Switching Charg

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RT9465
3A Single Cell Li-on Battery Slave Switching Charger
General Description
The RT9465 is a switch-mode single cell li-Ion/Li-Polymer
battery charger for portable applications. It integrates a
synchronous PWM controller, and high accuracy voltage
regulation. Besides, the charging current is regulated
through the integrated sensing resistors.
The RT9465 optimizes the charging task by using a control
algorithm to vary the charge rate via different modes,
including fast charge mode, and constant voltage mode.
The key charge parameters are programmable via the I²C
interface. The junction temperature is monitored by I²C.
Other features include under-voltage protection, over-
voltage protection (including V_BAT and V_BUS side), thermal
regulation and reverse leakage protection and MIVR.
The RT9465 is available in a WQFN-16L 3x3 Package.
Ordering Information
RT9465
Package Type
QW : WQFN-16L 3x3 (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.
Features
 Input Voltage Range : 3.9V to 14V
 Synchronous 1.5MHz/0.75MHz Switching Frequency
95% Max. Duty
 Up to 92%/94% Peak Efficiency at VIN = 9V/5V
 VIN Over-Voltage Protection : 14.5V
 VIN Under-Voltage Protection : 3.8V
 VIN Under-Voltage-Lock-Out : 3.3V
 Fault Detection (VIN and VBAT Monitoring)
 INT Output for Communication with I²C
 Programmable Minimum Input Voltage Range :
3.9V to 13.4V (0.1V/Step)
 Programmable Battery Voltage Regulation Range :
3.8V to 5.06V (0.02V/Step)
 Programmable End of Charge Range : 0.6A to 1.6A
(0.1A/Step)
 Programmable Average Output Current Regulation
Range : 0.6A to 3A (0.1A/Step)
 Junction Temperature Monitor : 60°C to 116°C (4°C/
Step)
 VIN Minimum Input Voltage Regulation (MIVR) : ±3%
 Battery CV (Constant Voltage) Regulation : ±1%
 Output CC (Constant Current) Regulation, Output
Current < 1A : ±100mA (VBUS = 9V/12V)
 Output CC (Constant Current) Regulation, Output
Current > 1A : ±10% (VBUS = 9V/12V)
 Junction Temperature Monitor : ±3°C
 Thermal Shutdown : 160°C
Marking Information
K7=YM
DNN
K7= : Product Code
YMDNN : Date Code
Applications
 Cellular Telephones
 Personal Information Appliances
 Tablet PC, Power Bank
 Portable Instruments
Copyright ©2017 Richtek Technology Corporation. All rights reserved.
DS9465-00 May 2017
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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