ABSOLUTE MAXIMUM RATINGS .................................................................................................................................3
PACKAGE/ORDER INFORMATION ................................................................................................................................3
PIN FUNCTION ..................................................................................................................................................... 15-18
LED BACKLIGHT/BOOST OPERATION.................................................................................................................. 33-36
I
2
C OPERATION ................................................................................................................................................... 37-42
RELATED PARTS ........................................................................................................................................................52
3577f
2
LTC3577/LTC3577-1
ABSOLUTE MAXIMUM RATINGS
(Notes 1, 2, 3)
PIN CONFIGURATION
44
CHRG
43 CLPROG
42 V
C
41
ACPR
40 V
BUS
39 V
OUT
38 BAT
I
LIM0
1
I
LIM1
2
LED_FS 3
WALL 4
SW3 5
V
IN3
6
FB3 7
OVSENS 8
LED_OV 9
DV
CC
10
SDA 11
SCL 12
OVGATE 13
PWR_ON 14
ON
15
45
37 IDGATE
36 PROG
35 NTC
34 NTCBIAS
33 SW1
32 V
IN12
31 SW2
30 V
INLD02
29 LDO2
28 LDO1
27 LDO1_FB
26 FB1
25 FB2
24 LDO2_FB
23 V
INLDO1
UFF PACKAGE
44-LEAD (7mm 4mm) PLASTIC QFN
T
JMAX
= 110°C,
θ
JA
= 45°C/W
EXPOSED PAD (PIN 45) IS GND, MUST BE SOLDERED TO PCB
TOP VIEW
V
SW
............................................................ –0.3V to 45V
V
BUS
, V
OUT
, V
IN12
, V
IN3
, V
INLDO1
, V
INLDO2
, WALL
t < 1ms and Duty Cycle < 1% .................. –0.3V to 7V
Steady State............................................. –0.3V to 6V
CHRG,
BAT, LED_FS, LED_OV, PWR_ON, WAKE,
PBSTAT, PG_DCDC, FB1, FB2, FB3, LDO1, LDO1_FB,
LDO2, LDO2_FB, DV
CC
, SCL, SDA ............... –0.3V to 6V
NTC, PROG, CLPROG,
ON,
I
LIM0
, I
LIM1
(Note 4)............................................–0.3V to V
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