LT3579IUFD-1-PBF Просмотр технического описания (PDF) - Linear Technology
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LT3579IUFD-1-PBF Datasheet PDF : 40 Pages
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LT3579/LT3579-1
TYPICAL APPLICATION
2MHz, Boost Converter with Output Disconnect Generates a 5V Output from 2.8V to 4.2V Input
VIN
2.8V TO 4.2V
L1
0.47μH
D1
M1
COUT1
22μF
100k
CIN
10μF
SW1 SW2
VIN
FB
SHDN
GATE
LT3579
FAULT
RT
CLKOUT
VC
SYNC GND SS
43.5k 10k
47pF
43.2k
22nF
6.34k
2.2nF
VOUT
5V
2A
COUT
22μF
CIN: 10μF, 16V, X7R, 1206
COUT1, COUT: 22μF, 16V, X7R, 1210
D1: CENTRAL SEMI CTLSH3-30M833
L1: VISHAY IHLP-2020BZ-01-R47
M1: SILICONIX SI7123DN
3579 TA26
100
90
80
70
60
50
40
30
20
0
Efficiency and Power Loss
2.4
2.1
1.8
1.5
1.2
VIN = 3.3V
0.9
0.6
0.3
0.5
1
1.5
LOAD CURRENT (A)
0
2
2.5
3579 TA27
Transient Response with 0.8A to 1.8A to 0.8A
Output Load Step (VIN = 3.3V)
VOUT
200mV/DIV
AC COUPLED
IL
1A/DIV
ILOAD
1A/DIV
100μs/DIV
3579 TA28
35791f
37
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