MAX1898EUB42-T Maxim Integrated Products, MAX1898EUB42-T Datasheet - Page 7

• Manufacturer Part Number: MAX1898EUB42-T
• Description: Battery Management Linear Charger for 1-Cell Li+ Battery
• Manufacturer: Maxim Integrated Products

Figure 1. Functional Diagram
500mA CHARGE
CHARGING FOR
DC IN
(2.8kΩ FOR
C
CURRENT)
CT
= 100nF
RSET
LED
3hr,
EN/OK
Linear Charger for Single-Cell Li+ Battery
CHG
ISET
CT
_______________________________________________________________________________________
OSC
3V
100kΩ
TIMEOUT
CONTROL
5mA
LOGIC
DONE
0.1µF
V
280mV ISET (FALLING)
L
÷2
305mV ISET (RISING)
REG
UVLO
18
SHUTDOWN
1.4V
REF
BATT
IN
SHUTDOWN
LOGIC
CHG
CA
1.4V
1.4V
84Ω
ICHARGE < 20%
VA
SHUTDOWN
RESTART
CSA
DONE
PREQUAL
GND
DRV
84mΩ
20mΩ
HV
4.5V TO 12V
69.275kΩ
34.637kΩ
470Ω
2.653kΩ
IN
2.5V
CS
DRV
BATT
10µF
RSTRT
0.1µF
7