LTC1174
LTC1174-3.3/LTC1174-5
U
TYPICAL APPLICATIO S
6V to 5V Step-Down Regulator with Low-Battery Detection
INPUT VOLTAGE
6V
+
+
47µF**
16V
6
0.1µF
4.7k
LOW-BATTERY INDICATOR
*
V
IN
×2
IS SET TO TRIP AT V = 5.5V
IN
*LOW-
BATTERY
8
1
5
7
2
3
I
SHUTDOWN
PGM
AVX TPSD476K016
= MBRS140T3 (SURFACE MOUNT)
1N5818
**
D1
INDICATOR
LB
V
OUT
OUT
162k
† L1 SELECTION
LTC1174-5
V
OUT
MANUFACTURER PART NO. TYPE
SW
5V
LB
IN
L1†
100µH
COILTRONICS
SUMIDA
GOWANDA
CTX100-4 SURFACE MOUNT
CD75-101 SURFACE MOUNT
GA10-103K THROUGH HOLE
365mA
47µF**
16V
×2
GND
4
47.5k
D1
1174 TA03
High Efficiency 3.3V Regulator
INPUT VOLTAGE
4V TO 12.5V
+
22µF*
6
25V
0.1µF
V
IN
×3
8
1
7
3
I
SHUTDOWN
PGM
LB
LB
V
IN
OUT
50µH†
LTC1174-3.3
V
OUT
2
5
SW
3.3V
OUT
425mA
47µF**
16V
×2
+
GND
4
AVX TPSD226K025
*
1N5818
AVX TPSD476K016
**
† COILTRONICS CTX50-4
1174 TA04
1174fe
13
Linear Systems [ Linear Systems ]
