LTC4050 Datasheet, PDF (6/12 Pages) Linear Technology – Lithium-Ion Linear Battery Charger with Thermistor Interface

LTC4050
BLOCK DIAGRA
V_CC
8
UV
–
28.6k
+
3.88V (LTC4050-4.1)
3.98V (LTC4050-4.2)
C5
NTC
–
2
+
CHRG
3
C1
80Ω
800Ω
+– _54mV
SENSE
9
R_SENSE
C4
32µA
4 ^TIMER
C/10 STOP RECHRG C/10
ACPR LOGIC
SHDN
SLP
720Ω
OSCILLATOR
COUNTER
–
CA
+
C2
LBO
ACPR
10
3.6V V_REF
+
C3
A1
–
V_CC
2.3µA
VA
V_REF
2.47V
CHARGE
BATTERY CURRENT I_BAT = (2.47V • 800Ω)/(R_PROG • R_SENSE)
PROG
6
R_PROG
DRV
7
BAT
1
GND
5
4050 BD
4050f
6