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LT3598
TYPICAL APPLICATION
90% Ef?cient LED Driver for 60 White LEDs
Ef?ciency vs Total LED Current
C1
2.2μF
PV IN
8V TO 40V
V IN
5V
C3
2.2μF
100k
L1, 10μH
V IN
OPENLED
SW
D1
V OUT
V O_SW
R4
1.00M
C2
4.7μF
100
95
90
V IN = 25V
V IN = 16V
R1
SHDN
PWM
SYNC
SHDN
PWM
SYNC
RT
LT3598
FB
R5
30.9k
85
80
75
70
51.1k
V REF
65
R HOT
10k
R NTC
100k
CTRL
LED1
LED2
LED3
LED4
LED5
20mA
60
0
20
40 60 80
TOTAL LED CURRENT (mA)
100 120
3598 TA05b
R8
60.4k
T SET I SET
SS
C4
LED6
GND V C
R C
R7
100k
C5
47pF
R3
14.7k
10nF
2.61k
C C
15nF
3598 TA04a
RELATED PARTS
PART NUMBER
LT3474/
LT3474-1
LT3475/
LT3475-1
LT3476
LT3477
DESCRIPTION
36V, 1A (I LED ), 2MHz, Step-Down LED Driver
Dual 1.5A (I LED ), 36V, 2MHz, Step-Down LED Driver
Quad Output 1.5A, 2MHz High Current LED Driver with
1000:1 Dimming
3A, 42V, 3MHz Boost, Buck-Boost, Buck LED Driver
COMMENTS
V IN : 4V to 36V, V OUT(MAX) = 13.5V, True Color PWM Dimming = 400:1,
I SD < 1μA, TSSOP-16E Package
V IN : 4V to 36V, V OUT(MAX) = 13.5V, True Color PWM Dimming = 3000:1,
I SD < 1μA, TSSOP-20E Package
V IN : 2.8V to 16V, V OUT(MAX) = 36V, True Color PWM Dimming = 1000:1,
I SD < 10μA, 5mm × 7mm QFN-10 Package
V IN : 2.5V to 25V, V OUT(MAX) = 40V, Dimming = Analog/PWM, I SD < 1μA,
QFN and TSSOP20E Packages
LT3478/LT3478-1 4.5A, 42V, 2.5MHz High Current LED Driver with 3000:1 V IN : 2.8V to 36V, V OUT(MAX) = 42V, True Color PWM Dimming = 3000:1,
Dimming
I SD < 3μA, TSSOP16E Package
LT3486
LT3496
LT3497
LT3498
LT3518/LT3517
LT3590
LT3592
LT3595
Dual 1.3A, 2MHz High Current LED Driver
45V, 2.1MHz 3-Channel (I LED = 1A) Full Featured
LED Driver
Dual 2.3MHz, Full Function LED Driver with Integrated
Schottkys and 250:1 True Color PWM Dimming
2.3MHz, 20mA LED Driver and OLED Driver with
Integrated Schottky
2.3A/1.3A 45V, 2.5MHz Full Featured LED Driver with
True Color PWM Dimming
48V, 850kHz 50mA Buck Mode LED Driver
36V, 2.2MHz, 500mA Buck Mode LED Driver
45V, 2.5MHz 16-Channel Full Featured LED Driver
V IN : 2.5V to 24V, V OUT(MAX) = 36V, True Color PWM Dimming = 1000:1,
I SD < 1μA, 5mm × 3mm DFN and TSSOP-16E Packages
V IN : 3V to 30V (40V MAX ), V OUT(MAX) = 45V, True Color PWM Dimming =
3000:1, I SD < 1μA, 4mm × 3mm QFN-28 Package
V IN : 2.5V to 10V, V OUT(MAX) = 32V, I Q = 6mA, I SD < 12μA, 2mm × 3mm
DFN-10 Package
V IN : 2.5V to 12V, V OUT(MAX) = 32V, I Q = 1.65mA, I SD < 9μA, 2mm × 3mm
DFN-10 Package
V IN : 3V to 30V (40V MAX ), V OUT(MAX) = 42V, True Color PWM Dimming =
3000:1, I SD < 5μA, 4mm × 4mm QFN-16 Package
V IN : 4.5V to 55V, Dimming = 200:1 True Color PWM, I SD < 15μA,
2mm × 2mm DFN-6 and SC70 Packages
V IN : 3.6V to 36V, True Color PWM Dimming = 10:1, I SD < 1μA, 2mm × 3mm
DFN-10 and MSOP-10E Packages
V IN : 4.5V to 55V, V OUT(MAX) = 45V, True Color PWM Dimming = 5000:1,
I SD < 1μA, 5mm × 9mm QFN-56 Package
3598fb
24 Linear Technology Corporation
(408) 432-1900 ● FAX: (408) 434-0507 www.linear.com
1630 McCarthy Blvd., Milpitas, CA 95035-7417
●
LT 0710 REV B ? PRINTED IN USA
? LINEAR TECHNOLOGY CORPORATION 2008
发布紧急采购，3分钟左右您将得到回复。
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LT3598IUF#TRPBF
功能描述:IC LED DRIVR WHITE BCKLGT 24-QFN 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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