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LT3003 数据表(PDF) 14 Page - Linear Technology

部件名 LT3003
功能描述  Full-Featured LED Driver with 1.5A Switch Current
PDF  20 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LT3003 数据表(HTML) 14 Page - Linear Technology

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LT3517
14
3517ff
Low Side Current Sensing Load Dump Protected Buck-Boost Mode LED Driver
D1
L1
6.8μH
RSENSE
330mΩ
SHDN
VC
GND
RT SS
RT
6.04k
2MHz
R3
10k
3517 TA05a
C3
0.1μF
C2
4.7μF
R1
3.92M
R2
124k
M1
C5
0.22μF
C1
2.2μF
C4
33nF
PWM
ISP
FB
ISN
TG
TGEN
VREF
CTRL
SYNC
300mA
VIN
8V TO 16V
VIN
LT3517
SW
PWM
D1: DIODES DFLS160
L1: TOKO B992AS-6R8N
C1: KEMET C0806C225K4RAC
C2: KEMET C1206C475K3RAC
C3: MURATA GRM21BR71H104KA01B
C4: MURATA GRM219R71H333KAQ01B
C5: MURATA GRM21BR71H224KA01B
M1: ZETEX ZXMP6A13FTA
LEDs: LUXEON I (WHITE)
TYPICAL APPLICATIONS
5000:1 PWM Dimming at 100Hz
Efficiency
PWM
5V/DIV
IL
1A/DIV
ILED
200mA/DIV
500ns/DIV
VIN = 12V
fOSC = 2MHz
ILED = 300mA
3517 TA05b
PWM DUTY CYCLE (%)
0
20
30
40
50
60
70
80
90
20
40
60
80
3517 TA05c
100
VIN = 12V
CTRL = VREF
VISP REF GND
5ms/DIV
VIN Raises From 15V to 40V in 5ms.
3517 TA05d
VIN REF GND
IL 1A/DIV
VISP 10V/DIV
VIN 10V/DIV
ILED 200mA/DIV
VISP
15V TO 40V
VIN 15V TO 40V
Load Dump Response



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