G5803
Global Mixed-mode Technology
1A Single Cell Li-Ion Battery Linear Charger
Features
General Description
The G5803 is a standalone linear Li-Ion battery
charger with a complete pre-charge, constant-current
and constant-voltage charge loop.
No External Power MOSFET, Sense Resistor or
Blocking Diode Required
1% Regulation Voltage Accuracy
Programmable Constant Charge Current Limit
up to 1A
No external power MOSFET, sense resistor and block-
ing diode is required due to internal power MOSFET
architecture. The charge voltage is regulated at 4.2V,
and the charge current is programmable by an exter-
nal resistor. After the final regulation voltage is
reached and the charge current drops to 1/10th the
programmed charge current, the open drain NMOS
Automatic Recharge
Complete Pre-Charge, Constant Current,
Constant Voltage and Charge Termination
Charge Procedure
Support for 5V Power Supply Voltage
Internal Thermal Protection Circuit
SOT-23-5 & SOP-8 (FD) Package
CHRG pin would be turn off automatically without
terminating the charge loop.
Other features include under voltage lockout, auto-
matic recharge, over temperature protection and a
charge status indication pin.
Ordering Information
ORDER
NUMBER
G5803T11U
G5803F11U
PACKAGE
MARKING
TEMP. RANGE
(Green)
5803x
-40°C ~ +85°C
-40°C ~ +85°C
SOT-23-5
G5803
SOP-8 (FD)
Note:T1: SOT-23-5 F1: SOP-8 (FD)
1: Bonding Code
U: Tape & Reel
Pin Configuration
Typical Application Circuit
500mA Single Cell Li-Ion Charger
VIN
300Ω
G5803
VIN
G5803
G5803
LED
4.5V to 6.5V
CHRG
8
7
6
5
NC
VIN
NC
PROG
GND
1
2
3
4
1
2
3
5
4
PROG
VIN
CHRG
GND
BAT
1µF
CHRG
NC
BAT
Thermal
Pad
1.5Ω*
PROG
GND
BAT
VIN
Li-lon
Battery
SOT-23-5
SOP-8 (FD)
2k
Note: Recommend connecting the Thermal Pad to
the Ground for excellent power dissipation.
*
1.5Ω resistor in series with a ceramic capacitor will
minimize the start-up voltage overshoot transients
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 0.2
Jun 18, 2013
1