LTC1174-3.3 Linear Technology, LTC1174-3.3 Datasheet - Page 12

• Manufacturer Part Number: LTC1174-3.3
• Description: High Efficiency Step-Down and Inverting DC/DC Converter
• Manufacturer: Linear Technology

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