LTC1574_1 데이터 시트보기 (PDF) - Linear Technology
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LTC1574_1 Datasheet PDF : 8 Pages
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LTC1574
LTC1574-3.3/LTC1574-5
TYPICAL APPLICATIO S
Low Dropout 5V Step-Down Regulator
with Low-Battery Detection
VIN
5.5V to 12.5V
4.7k
*LOW-
BATTERY
INDICATOR
162k
47.5k
5
VIN
6 IPGM
SHDN 7
11
LTC1574-5
LBOUT
VOUT
10
12 LBIN
SW 3, 14
GND
2, 4, 13, 15
* LOW-BATTERY INDICATOR IS
SET UP TO TRIP AT VIN = 5.5V
** AVX TPSD476K016
† SELECTION
MANUFACTURER
COILTRONICS
SUMIDA
GOWANDA
PART NO.
CTX100-4
CD75-101
GA10-103K
TYPE
SURFACE MOUNT
SURFACE MOUNT
THROUGH HOLE
+
0.1µF
47µF**
16V
×2
L1
100µH†
VOUT
5V
365mA
+ 47µF**
16V
×2
1574 TA04
High Efficiency 3.3V Regulator
VIN
4V TO 12.5V
5
VIN
6 IPGM
7
SHDN
12
LBIN
LTC1574-3.3
VOUT
10
11 LBOUT
3, 14
SW
* AVX TPSD226K025
** AVX TPSD476K016
† COILTRONICS CTX50-4
GND
2, 4, 13, 15
+ 22µF*
25V
×2
0.1µF
50µH†
VOUT
3.3V
425mA
+
1574 TA05
47µF*
16V
×2
Positive to – 5V Converter
VIN
4V TO 12.5V
* LOW-BATTERY INDICATOR IS
SET TO TRIP AT VIN = 4.4V
** AVX TPSD106K035
*** AVX TPSD107K010
† SELECTION
MANUFACTURER
COILTRONICS
COILCRAFT
SUMIDA
GOWANDA
PART NO. TYPE
CTX50-3 SURFACE MOUNT
DT3316-473 SURFACE MOUNT
CD54-470 SURFACE MOUNT
GA10-472K THROUGH HOLE
4.7k
*LOW-
BATTERY
INDICATOR
280k
43k
5
VIN
6 IPGM
SHDN 7
11
LTC1574-5
LBOUT
VOUT
10
12 LBIN
3, 14
SW
GND
2, 4, 13, 15
+
0.1µF
L1†
+
50µH
10µF**
35V
×2
VIN (V)
4
6
8
10
12.5
IOUT (mA)
110
140
170
200
235
100µF***
10V
VOUT
–5V
1574 TA06
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8
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408)432-1900 q FAX:(408)434-0507 q www.linear-tech.com
sn1574 1574fas LT/TP 1000 2K REV A • PRINTED IN
USA
© LINEAR TECHNOLOGY CORPORATION 1995
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