LTC1174
LTC1174-3.3/LTC1174-5
U
O
TYPICAL APPLICATI S
High Efficiency 3V Regulator
INPUT VOLTAGE
4V TO 12.5V
3 ×
+
6
22µF*
0.1µF
V
IN
25V
8
1
5
7
3
I
SHUTDOWN
PGM
100pF
LB
LB
V
IN
FB
50µH†
V
LTC1174
OUT
2
3V
SW
OUT
450mA
42k
30k
GND
4
+
2 ×
100µF**
1N5818
10V
AVX TPSD226K025
AVX TPSD105K010
*
1174 TA05
**
† COILTRONICS CTX50-4
Positive-to-Negative (–5V) Converter
INPUT VOLTAGE
4V TO 12.5V
*LOW-BATTERY INDICATOR
V
(V) I
4
6
8
10
(mA)
IN
OUT MAX
110
IS SET TO TRIP AT V = 4.4V
IN
2 ×
10µF**
35V
+
+
6
**AVX TPSD106K035
***AVX TPSD105K010
D1= MBRS130LT3 (SURFACE MOUNT)
1N5818
0.1µF
4.7K
140
V
IN
170
*LOW-
BATTERY
8
1
5
7
2
3
I
SHUTDOWN
PGM
200
† L1 SELECTION
12.5
235
INDICATOR
LB
LB
V
OUT
OUT
280k
LTC1174HV-5
MANUFACTURER
PART NO.
TYPE
SW
IN
COILTRONICS
COILCRAFT
SUMIDA
CTX50-3
SURFACE MOUNT
SURFACE MOUNT
SURFACE MOUNT
THROUGH HOLE
L1†
50µH
DT3316-473
CD54-470
GA10-472K
GND
4
100µF***
10V
43k
D1
GOWANDA
V
OUT
–5V
1174 TA06
Positive-to-Negative (– 3.3V) Converter
INPUT VOLTAGE
4V TO 13.5V
* LOW-BATTERY INDICATOR
2 ×
+
IS SET TO TRIP AT V = 4.4V
6
IN
V
(V) I
4
5
6
7
(mA)
IN
OUT MAX
175
33µF**
0.1µF
4.7K
** AVX TPSD336K020
*** AVX TPSD105K010
D1 = MBRS140T3 (SURFACE MOUNT)
1N5818
V
IN
20V
*LOW-
BATTERY
8
1
5
7
2
3
205
I
SHUTDOWN
PGM
230
255
INDICATOR
† L1 SELECTION
LB
LB
V
OUT
OUT
220k
LTC1174HV-3.3
SW
MANUFACTURER
PART NO.
TYPE
IN
COILTRONICS
COILCRAFT
SUMIDA
CTX50-3
SURFACE MOUNT
SURFACE MOUNT
SURFACE MOUNT
THROUGH HOLE
L1†
50µH
2 ×
100µF***
10V
+
DT3316-473
CD54-470
GA10-472K
GND
4
43k
D1
V
OUT
GOWANDA
–3.3V
210mA
1174 TA07
12