LTC1612 데이터 시트보기 (PDF) - Linear Technology
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LTC1612 Datasheet PDF : 8 Pages
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LT1612
TYPICAL APPLICATIONS
2V to 0.9V Converter
0.1µF
VIN
2V
VIN BOOST
SHDN
SW
L1
10µH
C1
10µF
LT1612
MODE
FB
VC
GND
33k
R2
232k
330pF
100pF
R1
105k
C1: TAIYO-YUDEN JMK325BJ106MN
C2: PANASONIC EEFCDOF680R
L1: SUMIDA CD43-100
VOUT
0.9V
500mA
C2
68µF
3.15V
1612 TA09
Efficiency for LT1612 vs Linear Regulator.
VOUT = 0.9V.
80
VIN = 2V
70
60
VIN = 3V
50
VIN = 2V (LINEAR)
40
30
VIN = 3V (LINEAR)
20
10
1
10
100
LOAD CURRENT (mA)
1000
1612 TA10
5V to 3.3V Converter
C3
0.1µF
VIN
5V
VIN BOOST
SHDN
SW
L1
10µH
LT1612
20pF
C1
10µF
MODE
FB
VC
GND
R3
33k
C4
680pF
R1
R2
1M
232k
1%
1%
C1: TAIYO-YUDEN LMK325BJ106MN
C2: TAIYO-YUDEN LMK325BJ226MN
L1: SUMIDA CD43-100
VOUT
3.3V
500mA
C2
22µF
1612 TA01a
Efficiency
85
VIN = 5V
80 VOUT = 3.3V
75
70
65
60
55
50
1
10
100
LOAD CURRENT (mA)
1000
1612 TA01b
RELATED PARTS
PART NUMBER
LTC®1474
LTC1701
LTC1707
DESCRIPTION
Low IQ Step-Down Switching Regulator
SOT-23 Step-Down Switching Regulator
Monolithic Synchronous Step-Down Switching Regulator
COMMENTS
10µA IQ, VIN from 3V to 18V, MSOP Package up to 300mA
500mA in SOT-23 Package, 1MHz Switching Frequency
500mA, VIN from 2.65V to 8.5V
8
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408)432-1900 q FAX:(408)434-0507 q www.linear-tech.com
1612i LT/TP 0400 4K • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 1999
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