LTC3577-4_15 Datasheet, PDF (19/52 Pages) Linear Technology – Highly Integrated Portable Product PMIC

BLOCK DIAGRAM
LTC3577-3/LTC3577-4
V_BUS
40
8
13
OVSENS OVGATE
OVERVOLTAGE
PROTECTON
42
EXTPWR
EXTERNAL
POWER DETECT
4
WALL
WALL
DETECT
41
ACPR
CLPROG
43
NTCBIAS
34
NTC
35
I_LIM0
1
I_LIM1
2
CHRG
44
BATTERY
TEMP
MONITOR
I_LIM
LOGIC
CHARGE
STATUS
INPUT
CURRENT
LIMIT
CC/CV
CHARGER
OVERTEMP BATTERY
SAFETY DISCHARGER
UVLO
IDEAL
+
DIODE
–
+– _15mV
14ms
RISING
DELAY
EN
–
0.8V
+
150mA
LDO2
PWR_ON
14
ON
15
PBSTAT
16
EN3
17
10 ^DVCC
SDA
11
SCL
12
PGOOD
21
PUSH-
BUTTON
INPUT
I²C
LOGIC
230ms FALLING
DELAY
LED_OV
9
SW
18,19,20
40V LED BACKLIGHT
BOOST CONVERTER
DAC
22 ^ILED
0.8V
LED_FS
3
EN 500mA, 2.25MHz
BUCK REGULATOR 1
0.8V +
–
PG
EN _{500mA, 2.25MHz}
BUCK REGULATOR 2
0.8V +
–
PG
EN 800mA, 2.25MHz
BUCK REGULATOR 3
0.8V +
–
ENB
–
PG
0.8V
+
150mA
LDO1
GND
45
V_OUT
39
IDGATE
37
BAT
38
PROG
36
V_INLD02
30
LDO2
29
LDO2_FB
24
V_{IN12 32}
SW1
33
FB1
26
SW2
31
FB2
25
V_IN3
6
SW3
5
FB3
7
V_INLD01
27
LDO1
28
LDO1_FB
23
357734 BD
357734fb
19