LTC3101_10 Datasheet, PDF (29/34 Pages) Linear Technology – Wide VIN, Multi-Output DC/DC Converter and PowerPath Controller

LTC3101
TYPICAL APPLICATIONS
Manual Enable with Simultaneous Start-Up
2 AA ⁺
C3
CELLS
10μF
4.7μH
C4
R1
10μF _1M
V_OUT3 = 3.3V
300mA FOR V_IN ≥ 1.8V
800mA FOR V_IN ≥ 3V
USB POWER
4.3V TO 5.5V
C2
10μF
DISABLE ENABLE
C1
0.22μF
BAT1 BAT2 SW3A SW3B OUT3
USB1
FB3
USB2
HSO
ENA1
ENA2
ENA3
CRS
LTC3101
MAX
PWM
PWRON
LDO
SW2
FB2
SW1
FB1
GND
R2
221k
C5
4.7μF
C6
4.7μF
4.7μH
R3
221k
C7
4.7μF
C8
C9
22pF
10μF
Hot Swap OUTPUT
3.3V
100mA
TRACKING OUTPUT
200mA
1.8V
50mA
V_OUT2
1.8V
350mA
R4
110k
4.7μH
R5
221k
C10
22pF
C11
10μF
V_OUT1
1.5V
350mA
R6
147k
3101 TA03a
ENABLE
5V/DIV
OUTPUT
VOLTAGES
1V/DIV
HSO
2V/DIV
Power-Up Waveforms
V_OUT3
V_OUT2
V_OUT1
200μs/DIV
3101 TA03b
ENABLE
5V/DIV
C_RS
2V/DIV
RESET 5V/DIV
V_OUT1 2V/DIV
V_OUT2 5V/DIV
V_OUT3 5V/DIV
RESET Timing During Power Up
50ms/DIV
3101 TA03c
3101fb
29