参数资料
型号: LT3591EDDB#TRPBF
厂商: Linear Technology
文件页数: 3/16页
文件大小: 0K
描述: IC LED DRIVER WHITE BCKLGT 8-DFN
标准包装: 2,500
拓扑: PWM,升压(升压)
输出数: 1
内部驱动器:
类型 - 主要: 背光
类型 - 次要: 白色 LED
频率: 750kHz ~ 1.2MHz
电源电压: 2.5 V ~ 12 V
安装类型: 表面贴装
封装/外壳: 8-WFDFN 裸露焊盘
供应商设备封装: 8-DFN(3x2)
包装: 带卷 (TR)
工作温度: -40°C ~ 85°C
LT3591
TYPICAL PERFORMANCE CHARACTERISTICS
Switch Saturation Voltage
T A = 25°C, unless otherwise speci?ed.
500
(V CESAT )
600
Schottky Forward Voltage Drop
15
Shutdown Current (V CTRL = 0V)
400
25 ° C
500
125 ° C
12
400
300
125 ° C
9
– 50 ° C
200
100
– 50 ° C
300
200
100
2 5 ° C
– 50 ° C
6
3
125 ° C
25 ° C
0
0
100 200 300 400 500 600 700 800
0
0
200 400 600 800
1000
1200
0
0
3
6
9
12
SWITCH CURRENT (mA)
Sense Voltage (V CAP – V LED )
vs V CTRL
3591 G01
SCHOTTKY FORWARD DROP (mV)
Open-Circuit Output
Clamp Voltage
3591 G02
V IN (V)
Input Current in Output
Open Circuit
3591 G03
240
200
160
120
– 50 ° C
25 ° C
125 ° C
45
44
43
125 ° C
25 ° C
8
7
6
5
4
125 ° C
– 50 ° C
25 ° C
80
42
– 50 ° C
3
2
40
41
1
0
0
500
1000 1500 2000
2500
3000
40
0
3
6
9
12
0
0
3
6
9
12
V CTRL (mV)
3591 G04
Switching Waveform
V SW
20V/DIV
V CAP
50mV/DIV
I L
200mA/DIV
V IN (V)
3591 G05
Transient Response
V CAP
5V/DIV
V CTRL
5V/DIV
I L
500mA/DIV
V IN (V)
3591 G06
V IN = 3.6V
500ms/DIV
3591 G07
V IN = 3.6V
1ms/DIV
3591 G08
FRONT PAGE
APPLICATION CIRCUIT
FRONT PAGE
APPLICATION CIRCUIT
3591f
3
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