LTC3401 Datasheet, PDF (12/16 Pages) Linear Technology – 1A, 3MHz Micropower Synchronous Boost Converter

LTC3401
OUTPUT DISCO ECT CIRCUITS
Single Cell Output Disconnect
V_IN = 0.9V TO 1.5V
LTC3401
3
4
V_IN
SW
10
SHDN
7
V_OUT
2
MODE/SYNC
FB
8
6
PGOOD
1
R_t
9
V_C
5
GND
ZETEX
FMMT717
V_OUT
RB*
C5
1µF
*
SET RB TO
FORCE
BETA
OF
≤100; RB
=
(V_OUT
–
V_INMIN – 0.7V)
I_OUTMAX
•
100
0 = FIXED FREQUENCY
1 = Burst Mode OPERATION
3404 TA03
Dual Cell Output Disconnect Alllowing Full Load Start-Up
V_IN = 1.8V TO 3V
R7
3
LTC3401
4
1M
V_IN
SW
10
SHDN
7
V_OUT
2
8
MODE/SYNC FB
6
PGOOD
1
R_t
9
V_C
5
GND
IRLML6401
RG
1M
V_OUT
C5
1µF
2N2222
0 = FIXED FREQUENCY
1 = Burst Mode OPERATION
3404 TA04
3401fa
12