ltc3445euf-pbf Linear Technology Corporation, ltc3445euf-pbf Datasheet - Page 9

• Manufacturer Part Number: ltc3445euf-pbf
• Description: I2c Controllable Buck Regulator With Two Ldos In A 4mm ? 4mm Qfn
• Manufacturer: Linear Technology Corporation

FU CTIO AL DIAGRA S
COIN
CELL
V
V
3V
CC1
CC1
U
+
PWR_EN
OR GND
OR GND
V
BACKUP
V
V
CC
CC
15
22
U
6
8
5
9
4
1
2
RUN
SDA
SCL
ADD7
ADD6
PGOOD
V
V
V
CC2
TRACK
BACKUP
STRAPPABLE
STRAPPABLE
POWER
GOOD
I
2
C
W
SLEW
CONTROL
V
CONTROL
BUCK/LDO
ENABLE
BURST
OUT
V
PowerPath
REF
0.6V
LDO
DAC
POWER FOR ALL EXCEPT
LDOs AND BUCK PFET
REF
REF
SOFT-START
SPECTRUM
PowerPath
CONTROL
SPREAD
LDO1
LDO2
Figure 1
V
V
CC1
CC1
3
POWER FOR LDOs
OUT
OUT
FB
FB
V
CC
SWITCH
SWITCH
BUCK REGULATOR
V
OSC ADJUST
POWER
DRIVER
POWER
REF
GND
10
V
CC1
SW
FB
C
IN1
EXPOSED PAD
BATTFAULT
LDO1 OUT
LDO2 OUT
V
CC
LD01FB
LD02FB
BATT
GND
SW
FB
14
17
11
25
21
20
23
24
18
19
3445 F01
V
BACKUP
L1
R3
R4
LTC3445
C1
C21
R1
R2
3445fa
9
C11