参数资料
型号: LT3517EFE#PBF
厂商: Linear Technology
文件页数: 12/20页
文件大小: 0K
描述: IC LED DRIVR AUTOMOTIVE 16-TSSOP
标准包装: 95
系列: True Color PWM™
恒定电流:
恒定电压:
拓扑: PWM,降压(降压),升压(升压)
输出数: 1
内部驱动器:
类型 - 主要: 车载,背光
类型 - 次要: 白色 LED
频率: 250kHz ~ 2.5MHz
电源电压: 3 V ~ 30 V
输出电压: 7V
安装类型: 表面贴装
封装/外壳: 16-TSSOP(0.173",4.40mm)裸露焊盘
供应商设备封装: 16-TSSOP-EP
包装: 管件
工作温度: -40°C ~ 125°C
LT3517
TYPICAL APPLICATIONS
Buck Mode 1A LED Driver
PV IN
24V
V IN
3.3V
C1
2.2μF
C2
2.2μF
R SENSE
ISP ISN TG
V IN
SHDN
LT3517
100m M1
SW
1A
C3
10μF
L1
15μH
D1
PWM
5V/DIV
I LED
1A/DIV
2000:1 PWM Dimming at 120Hz
V REF
PWM
CTRL
PWM
FB
SS
I L
1A/DIV
SYNC RT
TGEN V REF VC GND
C4
0.1μF
R T
16.9k
1MHz
C5
0.1μF
PV IN = 24V
f OSC = 1MHz
I LED = 1A
1μs/DIV
3517 TA02b
C1: KEMET C0805C225K4RAC
C2: MURATA GRM31MR71E225KA93
C3: MURATA GRM32DR71E106KA12B
C4, C5: MURATA GRM21BR71H104KA01B
D1: DIODES DFLS160
L1: TOKO B992AS-150M
LEDS: LUXEON K2 (WHITE)
M1: ZETEX ZXMP6A13FTA
3517 TA02a
350mA, 5V to 12V Boost Converter with Accurate Input Current Limit
V IN
5V
R SENSE
100m
L1
6.8μH
D1
V OUT
12V
350mA
90
Efficiency
C1
2.2μF
ISP TG ISN
SW
R1
549k
80
V IN
CTRL
FB
SHDN
PWM
SHDN
TGEN
V REF
LT3517
SYNC
RT
R2
49.9k
C2
10μF
70
60
VC
GND
SS
R3
10k
C4
10nF
C3
0.1μF
R T
6.04k
2MHz
50
50
100
150
200 250
I LOAD (mA)
300
350
3517 TA03a
3517 TA03b
C1: KEMET C0805C225K4RAC
C2: KEMET C1206C106K4RAC
C3: MURATA GRM21BR71H104KA01B
C4: MURATA GCM033R71A103KA03
D1: ZETEX ZLLS1000TA
L1: TOKO B992AS-6R8N
3517fg
12
For more information www.linear.com/LT3517
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