LT1612_1 데이터 시트보기 (PDF) - Linear Technology
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LT1612_1 Datasheet PDF : 8 Pages
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LT1612
TYPICAL APPLICATIONS
VIN
2.7V TO 4.2V
BURSTMODE
10µF
CERAMIC
Single Li-Ion to 2V Converter
0.1µF
VIN BOOST
SHDN
SW
L1
10µH
LT1612
20pF
MODE
FB
VC
GND
30k
680pF
1M
453k
1%
1%
C1: TAIYO-YUDEN LMK325BJ106MN
C2: TAIYO-YUDEN LMK325BJ226MN
L1: SUMIDA CD43-100
VOUT
2V
500mA
22µF
CERAMIC
1612 TA02
Transient Response
VOUT 50mV/DIV
IL 200mA/DIV
LOAD STEP
125mA TO 300mA
VIN = 4V
VOUT = 2V
MODE = HIGH
100µs/DIV
1612 TA03
Li-Ion to 2V Converter Efficiency
85
80
VIN = 2.8V
75
70
VIN = 4.2V
65
VIN = 3.5V
60
55
50
1
10
100
LOAD CURRENT (mA)
1000
1612 TA04
Burst Mode Operation
Inrush Current at Start-Up
VOUT 20mV/DIV
IL 100mA/DIV
MODE = LOW
5µs/DIV
1612 TA05
VOUT 2V/DIV
INRUSH
CURRENT
200mA/DIV
VSHDN 5V/DIV
0.2ms/DIV
1612 TA06
6
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