G5803

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
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
No external power MOSFET, sense resistor and blocking 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 external resistor. After the final regulation voltage is
reached and the charge current drops to 1/10th the
programmed charge current, the open drain NMOS
CHRG pin would be turn off automatically without
terminating the charge loop.
Other features include under voltage lockout, automatic recharge, over temperature protection and a
charge status indication pin.
Ordering Information
ORDER
NUMBER
MARKING
TEMP. RANGE
PACKAGE
(Green)
G5803T11U
G5803F11U
5803x
G5803
-40°C ~ +85°C
-40°C ~ +85°C
SOT-23-5
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
CHRG 1
GND
BAT
G5803
5
PROG
NC
1
PROG
2
GND
3
VIN
4
2
4
3
SOT-23-5
VIN
Thermal
Pad
8
NC
7
CHRG
6
NC
5
BAT
SOP-8 (FD)
VIN
4.5V to 6.5V
G5803
LED
VIN
CHRG
1µF
BAT
1.5Ω*
GND
PROG
Li-lon
Battery
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