LT3517(RevA) Просмотр технического описания (PDF) - Linear Technology
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производитель
LT3517 Datasheet PDF : 20 Pages
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LT3517
TYPICAL APPLICATIONS
Boost 100mA LED Driver with LED Open Protection
VIN
8V TO 16V
L1
22μH
PWM
C1
2.2μF
SHDN VIN
PWM
SW
ISP
TGEN
VREF LT3517
ISN
CTRL
TG
SYNC
FB
VC RT SS GND
C4
0.1μF
RT
16.9k
1MHz
C3
0.1μF
D1
RSENSE
1Ω
R1
1M
100mA
R2
30.1k
M1
LED1
LED2
LED10
C2
2.2μF
C1, C2: KEMET C1206C225K2RAC
C3, C4: MURATA GRM21BR71H104KA01B
D1: DIODES DFLS160
L1: COILCRAFT DS3316P-223
LEDS: CREE XLAMP 7090
M1: ZETEX ZXMP6A13FTA
3517 TA06a
3000:1 PWM Dimming at 100Hz
PWM
5V/DIV
ILED
100mA/DIV
IL
500mA/DIV
VIN = 12V
fOSC = 1MHz
ILED = 100mA
1μs/DIV
3517 TA06b
Efficiency
90
80
70
VIN = 12V
60 CTRL = VREF
50
40
30
20
0
20
40
60
80 100
PWM DUTY CYCLE (%)
3517 TA06c
3517fa
16
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