LTC3552 Datasheet, PDF (9/24 Pages) Linear Technology – Standalone Linear Li-Ion Battery Charger and Dual Synchronous Buck Converter

BLOCK DIAGRA
120°C
T_A
T_DIE
V_IN
14
1×
1×
LTC3552
1000×
PWR 15
MA
5µA
VA
CHRG 3
CA
CHARGE PWR
TERM
LOGIC
SHDN
EN
EN 16
R_ENABLE
MODE/SYNC 4
REGULATOR 1
V_FB1 9
0.6V +
EA
–
C1
C2
2.9V TO BAT
SLOPE
COMP
–
EN
I_TH
BURST
SLEEP
0.35V +
0.55V –
UV
UVDET
+
S
Q
RS
LATCH
R
Q
SWITCHING
LOGIC
AND
BLANKING
CIRCUIT
+
OV
OVDET
0.65V –
SHUTDOWN
REF
1.21V
R3
1V
R4
0.1V
R5
BURST
CLAMP
–+
I_COMP
ANTI
SHOOT-
THRU
I_RCMP
V_CC
5Ω
RUN1 10
0.6V REF
OSC
RUN2 7
OSC
V_FB2 8
REGULATOR 2 (IDENTICAL TO REGULATOR 1)
PGOOD1
POR
COUNTER
PGOOD2
2 BAT
R1
R2
ITERM
1
13 ^PROG
R_PROG
GND
17
R_TERM
12 SW1
V_CC
11 V_CC
6 POR
5 SW2
3552f
9