Datasheet

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