Datasheet
Table Of Contents
- FEATURES
- DESCRIPTION
- APPLICATIONS
- TYPICAL APPLICATION
- ABSOLUTE MAXIMUM RATINGS
- PIN CONFIGURATION
- ORDER INFORMATION
- ELECTRICAL CHARACTERISTICS
- TYPICAL PERFORMANCE CHARACTERISTICS
- PIN FUNCTIONS
- BLOCK DIAGRAM
- OPERATION
- APPLICATIONS INFORMATION
- TYPICAL APPLICATIONS
- PACKAGE DESCRIPTION
- REVISION HISTORY
- TYPICAL APPLICATION
- RELATED PARTS
LTC3101
12
3101fb
BLOCK DIAGRAM
MAX
CONTROL
AND
CURRENT
LIMIT
MAX
14
LDO
10
BAT1*
3
USB1*
4
11
ALWAYS-ON
LDO
CONTROL
WELL
CONTROL
WELL
CONTROL
BAT2*
16
USB2*
15
SW3A
20
SW3B
17
OUT3
A
BC
D HSO
A´
BUCK-BOOST
CONTROL
PUSHBUTTON
CONTROL
LOGIC
BANDGAP
REFERENCE
OVERTEMPERATURE
SHUTDOWN AND
UNDERVOLTAGE
LOCKOUT
1.27MHz
OSCILLATOR
24ms
DEGLITCH
Hot Swap
CONTROL
18
FB3
7
ENA3
19
PWRKEY
8
PWM
1
PWRON
6
C
RS
12
PBSTAT
9
4M
1µA
4M
4M
4M
1.20V
3101 BD
DISABLED
FB1 POWER BAD (IF ENABLED)
FB2 POWER BAD (IF ENABLED)
FB3 POWER BAD (IF ENABLED)
UNDERVOLTAGE FAULT
OVERTEMPERATURE FAULT
400k
V
CC
RESET
13
+
–
SW1
2
FB1
WELL
CONTROL
BUCK 1
CONTROL
23
ENA2
BUCK 2
CONTROL
GND
(EXPOSED PAD)
24
ENA1
21
SW2
5
FB2
*BAT1 AND BAT2 MUST BE CONNECTED TOGETHER IN THE APPLICATION
USB1 AND USB2 MUST BE CONNECTED TOGETHER IN THE APPLICATION
22
25