LTC1174
LTC1174-3.3/LTC1174-5
U
TYPICAL APPLICATIO S
Positive-to-Negative (– 3.3V) Converter
INPUT VOLTAGE
4V TO 13.5V
* LOW-BATTERY INDICATOR
+
+
33µF**
20V
IS SET TO TRIP AT V = 4.4V
6
IN
V
(V) I
4
5
6
7
(mA)
IN
OUT MAX
175
0.1µF
4.7K
** AVX TPSD336K020
*** AVX TPSD105K010
D1 = MBRS140T3 (SURFACE MOUNT)
1N5818
V
IN
×2
*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
100µF***
10V
×2
DT3316-473
CD54-470
GA10-472K
GND
4
43k
D1
V
OUT
GOWANDA
–3.3V
1174 TA07
210mA
Negative Boost Converter
AVX TPSD336K020
*
D1
6
= MBRS140T3 (SURFACE MOUNT)
1N5818
V
IN
310k
50k
† L1 SELECTION
8
7
2
3
I
SHUTDOWN
PGM
MANUFACTURER
PART NO.
TYPE
+
33µF*
20V
1
5
0.1µF
COILTRONICS
COILCRAFT
SUMIDA
CTX50-3
SURFACE MOUNT
SURFACE MOUNT
SURFACE MOUNT
THROUGH HOLE
LB
OUT
V
OUT
DT3316-473
CD54-470
GA10-472K
×2
LTC1174-3.3
SW
LB
IN
GOWANDA
+
33µF*
16V
×2
0.1µF
L1†
50µH
GND
4
D1
V
OUT
–9V
1174 TA08
175mA
INPUT VOLTAGE
–5V
1174fe
15
Linear Systems [ Linear Systems ]
