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LT1932
TYPICAL APPLICATIO
Li-Ion Driver for Ten White LEDs
Efficiency
V IN
2.7V TO 4.2V
6
L1
10 μ H
1
D1
80
75
70
V IN = 4.2V
V IN = 2.7V
V IN
LT1932
SW
65
C1
4.7 μ F
5
SHDN
R SET
4
R SET
750 ?
LED
GND
2
3
100 ?
30mA
100 ?
C2
4.7 μ F
60
55
50
0
5
10
15
20
25
30
C1: TAIYO YUDEN JMK212BJ475
C2: TAIYO YUDEN TMK325BJ475
D1: ZETEX ZHCS400
L1: MURATA LQH3C100M24
(408) 573-4150
(408) 573-4150
(631) 543-7100
(814) 237-1431
1932 TA16a
TOTAL LED CURRENT (mA)
1932 TA16b
Li-Ion Driver for Six White LEDs
Efficiency
V IN
2.7V TO 4.2V
L1
4.7 μ H
D1
85
80
V IN = 4.2V
6
V IN
LT1932
1
SW
75
70
V IN = 2.7V
C1
4.7 μ F
5
SHDN
R SET
LED
GND
3
C2
1 μ F
65
3.3V DC
DIMMING
80.6k
4
2
60
CONTROL
R SET
1.50k
15mA
55
0
5
10 15
20
C1: TAIYO YUDEN JMK212BJ475
C2: TAIYO YUDEN TMK316BJ105
D1: ZETEX ZHCS400
L1: MURATA LQH3C4R7M24
(408) 573-4150
(408) 573-4150
(631) 543-7100
(814) 237-1431
1932 TA12a
LED CURRENT (mA)
1932 TA12b
RELATED PARTS
PART NUMBER
LT1615
LT1617
LT1618
LTC1682
LT1930
LT1931
LTC3200
LTC3201
LTC3202
DESCRIPTION
Micropower DC/DC Converter in 5-Lead ThinSOT
Micropower Inverting DC/DC Converter in 5-Lead ThinSOT
Constant-Current/Constant-Voltage DC/DC Converter
Doubler Charge Pump with Low Noise Linear Regulator
1.4MHz Switching Regulator in 5-Lead ThinSOT
Inverting 1.2MHz Switching Regulator in 5-Lead ThinSOT
Low Noise Regulated Charge Pump
Ultralow Noise, Charge Pump
High Efficiency, Fractional Charge Pump
COMMENTS
20V at 12mA from 2.5V Input, ThinSOT Package
–15V at 12mA from 2.5V Input, ThinSOT Package
Drives 20 White LEDs from Li-Ion, MS10 Package
3.3V and 5V Outputs with 60 μ V RMS Noise, Up to 80mA Output
5V at 480mA from 3.3V Input, ThinSOT Package
– 5V at 350mA from 5V Input, ThinSOT Package
5V Output with Up to 100mA Output
100mA, Integrated LP Filter, MSOP8
125mA, Integrated 2-Bit DAC
1932f
(408) 432-1900 q FAX: (408) 434-0507 www.linear.com
16
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
q
LT/TP 1201 2K ? PRINTED IN USA
? LINEAR TECHNOLOGY CORPORATION 2001
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相关代理商/技术参数
LT1932ES6#TRMPBF (CUT REEL)
制造商:Linear Technology 功能描述:
LT1932ES6#TRPBF
功能描述:IC LED DRIVR WHITE BCKLGT TSOT-6 RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 标准包装:6,000 系列:- 恒定电流:- 恒定电压:- 拓扑:开路漏极，PWM 输出数:4 内部驱动器:是 类型 - 主要:LED 闪烁器 类型 - 次要:- 频率:400kHz 电源电压:2.3 V ~ 5.5 V 输出电压:- 安装类型:表面贴装 封装/外壳:8-VFDFN 裸露焊盘 供应商设备封装:8-HVSON 包装:带卷 (TR) 工作温度:-40°C ~ 85°C 其它名称:935286881118PCA9553TK/02-TPCA9553TK/02-T-ND
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LT1933ES6#TR
功能描述:IC REG BUCK ADJ 0.6A TSOT23-6 RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:2,500 系列:- 类型:升压（升压） 输出类型:可调式 输出数:1 输出电压:1.24 V ~ 30 V 输入电压:1.5 V ~ 12 V PWM 型:电流模式，混合 频率 - 开关:600kHz 电流 - 输出:500mA 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) 供应商设备封装:8-SOIC