LTC3577EUFF#PBF Linear Technology, LTC3577EUFF#PBF Datasheet - Page 19

• Manufacturer Part Number: LTC3577EUFF#PBF
• Description: IC PWR MANAGEMENT HANDHELD 44QFN
• Manufacturer: Linear Technology

Specifications of LTC3577EUFF#PBF

• Applications: Handheld/Mobile Devices
• Voltage - Supply: 4.35 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 44-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -

BLOCK DIAGRAM
40
43
34
35
44
14
17
15
16
10
11
12
21
21
22
1
2
3
V
CLPROG
NTCBIAS
NTC
I
I
CHRG
PWR_ON
WAKE
ON
PBSTAT
DV
SDA
SCL
PG_DCDC
LED_OV
SW
18,19,20
I
LED_FS
LIM0
LIM1
LED
BUS
CC
8
OVERVOLTAGE
OVSENS
PROTECTON
MONITOR
40V LED BACKLIGHT
BATTERY
FALLING
BOOST CONVERTER
BUTTON
STATUS
CHRGE
230ms
PUSH-
INPUT
DELAY
LOGIC
TEMP
I
LIM
DAC
13
OVGATE
LOGIC
I
2
C
0.8V
OVERTEMP BATTERY
SAFETY DISCHARGE
HRST UVLO
CURRENT
DETECT
WALL
INPUT
LIMIT
4
WALL
GND
45
41
ACPR
EN
PG
EN
PG
EN
PG
EN
EN
CHARGER
150mA
150mA
CC/CV
LDO1
LDO2
BUCK REGULATOR
BUCK REGULATOR
BUCK REGULATOR
500mA, 2.25MHz
500mA, 2.25MHz
800mA, 2.25MHz
0.8V
0.8V
0.8V
0.8V
0.8V
DIODE
IDEAL
LTC3577/LTC3577-1
CONTROL
42
V
–
+
C
V
C
15mV
+
–
LDO1_FB
LDO2_FB
V
V
IDGATE
INLD01
INLD02
PROG
LDO1
LDO2
V
V
SW1
SW2
SW3
V
IN12
BAT
FB1
FB2
FB3
OUT
IN3
3577 BD
23
28
27
30
29
24
39
37
38
36
32
33
26
31
25
6
5
7
19
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