RT9527 RICHTEK [Richtek Technology Corporation], RT9527 Datasheet - Page 2

• Manufacturer Part Number: RT9527
• Description: Single Cell Li-Ion Battery Charger with Adjustable Charging Current for Portable Applications
• Manufacturer: RICHTEK [Richtek Technology Corporation]

RT9527
Ordering Information
Note :
Richtek products are :
Functional Pin Description
Function Block Diagram
Copyright
www.richtek.com
2
RT9527
9 (Exposed Pad)
ments of IPC/JEDEC J-STD-020.
RoHS compliant and compatible with the current require-
Suitable for use in SnPb or Pb-free soldering processes.
Pin No.
©
2012 Richtek Technology Corporation. All rights reserved.
4,
1
2
3
5
6
7
8
Package Type
QW : WDFN-8L 2x2 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
ISET
VIN
VIN
PGOOD
CHG
GND
ISET
TIMER
TS
BAT
Pin Name
Set Block
Current
BASE
UVLO
Sleep
Mode
OVP
Supply Voltage Input. VIN can withstand up to 28V input.
Power Good Status Output. Active-low, open-drain output.
Charger Status Output. Active-low, open-drain output.
Ground. The exposed pad must be soldered to a large PCB and connected to
GND for maximum power dissipation.
Charge Current Setting.
Safe-Charge Timer Setting.
Temperature Sense Input. The TS pin connects to a battery’s thermistor to
determine whether the battery is too hot or too cold for charging operation. If the
battery’s temperature is out of range, charging is paused until it re-enters the
valid range.
Charge Current Output for Battery.
V
I
BIAS
REF
CC/CV/TR
Multi Loop
Controller
Switch
Logic
Well
BAT
Pin Configurations
is a registered trademark of Richtek Technology Corporation.
Thermal
Circuit
Too Cold
TIMER
Pin Function
Too Hot
PGOOD
CHG
GND
VIN
+
-
+
-
WDFN-8L 2x2
(TOP VIEW)
VCC
1
2
3
4
9
8
7
6
5
TS
TMIER
CHG
PGOOD
GND
BAT
TS
TIMER
ISET
DS9527-00 May 2012