参数资料
型号: LT1937ES5#TRM
厂商: Linear Technology
文件页数: 12/12页
文件大小: 0K
描述: IC LED DRIVR WHITE BCKLGT TSOT-5
标准包装: 1
恒定电流:
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: 800kHz ~ 1.6MHz
电源电压: 2.5 V ~ 10 V
输出电压: 36V
安装类型: 表面贴装
封装/外壳: SOT-23-5 细型,TSOT-23-5
供应商设备封装: TSOT-23-5
包装: 剪切带 (CT)
工作温度: -40°C ~ 85°C
其它名称: LT1937ES5
LT1937ES5#TRMCT
LT1937ES5-ND
LT1937
TYPICAL APPLICATIO
Li-Ion to Four White LEDs
V IN
L
22 μ H
D
3V TO 5V
C IN
1 μ F
V DC
C OUT
0.22 μ F
DIMMING
V IN
SW
LT1937
90k
5k
SHDN
GND
FB
R1
4 ?
85
80
Four LED Efficiency
C IN : TAIYO YUDEN JMK107BJ105
C OUT : AVX 0603YD224
D: CENTRAL CMDSH-3
L: MURATA LQH3C220
V SW
10V/DIV
1937 TA02a
Switching Waveforms
75
V IN = 3V
V IN = 3.6V
I SW
100mA/DIV
V OUT
70
100mV/DIV
V IN = 3.6V
0.2 μ s/DIV
1937 TA02c
60
0
5 10
15
20
FOUR LEDs
15mA
LOAD CURRENT (mA)
1937 TA02b
RELATED PARTS
PART NUMBER
LT1615
LT1618
LT1932
LT1944/LT1944-1
DESCRIPTION
Micropower Step-Up Converter in ThinSOT
Constant Current/Voltage Step-Up DC/DC
White LED Step-Up Converter in ThinSOT
Dual Micropower Step-Up Converter
COMMENTS
Up to 36V Output; 20 μ A I Q , V IN : 1V to 15V,
Can Drive Up to Six LEDs, ThinSOT Package
1.4MHz, Drives Up to 20 LEDs, MS10 Package
1.2MHz, V IN = 1V to 10V, Drives Up to Eight LEDs from 3V Input,
ThinSOT Package
V IN = 1.2V to 15V, Two Independent DC/DCs, Up to 36V OUT , 20 μ A I Q ,
MS10 Package
LTC ? 3200/LTC3200-5 Low Noise White LED Charge Pump Converter
For up to 6 LEDs
2MHz, 100mA, No Inductor Required, MS8/ThinSOT Packages
(408) 432-1900 q FAX: (408) 434-0507 www.linear.com
LTC3201
LTC3202
12
Ultralow Noise White LED Charge Pump Converter
For up to 6 LEDs
Low Noise White LED Fractional Charge Pump Converter
For up to 6 LEDs
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
q
1.8MHz, 100mA, No Inductor Required, DAC Brightness Adj,
MS8 Package
1.5MHz, 125mA, No Inductor Required, Digital Brightness Adjust,
MS8 Package
1937f
LT/TP 0702 2K ? PRINTED IN USA
? LINEAR TECHNOLOGY CORPORATION 2002
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