LT3598 データシートの表示（PDF） - Linear Technology
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LT3598 Datasheet PDF : 24 Pages
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LT3598
TYPICAL APPLICATION
90% Efficient LED Driver for 60 White LEDs
PVIN
8V TO 40V
L1, 10μH
D1
C1
2.2μF
VIN
5V
C3
2.2μF
VIN
100k
OPENLED
SHDN SHDN
SW
VOUT
VO_SW
R4
1.00M
FB
R1
51.1k
PWM
SYNC
PWM
SYNC
RT
LT3598
R5
30.9k
R8
60.4k
RHOT
10k
RNTC
100k
R7
100k
VREF
CTRL
TSET ISET
LED1
LED2
LED3
LED4
LED5
LED6
SS GND VC
C4
C5
10nF
47pF R3
14.7k
RC
2.61k
CC
15nF
C2
4.7μF
20mA
Efficiency vs Total LED Current
100
95
90
85
80
75
70
65
60
0
VIN = 25V
VIN = 16V
20 40 60 80 100 120
TOTAL LED CURRENT (mA)
3598 TA05b
3598 TA04a
RELATED PARTS
PART NUMBER DESCRIPTION
COMMENTS
LT3474/
LT3474-1
LT3475/
LT3475-1
LT3476
LT3477
36V, 1A (ILED), 2MHz, Step-Down LED Driver
Dual 1.5A (ILED), 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
VIN: 4V to 36V, VOUT(MAX) = 13.5V, True Color PWM Dimming = 400:1,
ISD < 1μA, TSSOP-16E Package
VIN: 4V to 36V, VOUT(MAX) = 13.5V, True Color PWM Dimming = 3000:1,
ISD < 1μA, TSSOP-20E Package
VIN: 2.8V to 16V, VOUT(MAX) = 36V, True Color PWM Dimming = 1000:1,
ISD < 10μA, 5mm × 7mm QFN-10 Package
VIN: 2.5V to 25V, VOUT(MAX) = 40V, Dimming = Analog/PWM, ISD < 1μA,
QFN and TSSOP20E Packages
LT3478/LT3478-1 4.5A, 42V, 2.5MHz High Current LED Driver with 3000:1 VIN: 2.8V to 36V, VOUT(MAX) = 42V, True Color PWM Dimming = 3000:1,
Dimming
ISD < 3μA, TSSOP16E Package
LT3486
Dual 1.3A, 2MHz High Current LED Driver
VIN: 2.5V to 24V, VOUT(MAX) = 36V, True Color PWM Dimming = 1000:1,
ISD < 1μA, 5mm × 3mm DFN and TSSOP-16E Packages
LT3496
45V, 2.1MHz 3-Channel (ILED = 1A) Full Featured
LED Driver
VIN: 3V to 30V (40VMAX), VOUT(MAX) = 45V, True Color PWM Dimming =
3000:1, ISD < 1μA, 4mm × 3mm QFN-28 Package
LT3497
Dual 2.3MHz, Full Function LED Driver with Integrated VIN: 2.5V to 10V, VOUT(MAX) = 32V, IQ = 6mA, ISD < 12μA, 2mm × 3mm
Schottkys and 250:1 True Color PWM Dimming
DFN-10 Package
LT3498
2.3MHz, 20mA LED Driver and OLED Driver with
Integrated Schottky
VIN: 2.5V to 12V, VOUT(MAX) = 32V, IQ = 1.65mA, ISD < 9μA, 2mm × 3mm
DFN-10 Package
LT3518/LT3517
LT3590
2.3A/1.3A 45V, 2.5MHz Full Featured LED Driver with
True Color PWM Dimming
48V, 850kHz 50mA Buck Mode LED Driver
VIN: 3V to 30V (40VMAX), VOUT(MAX) = 42V, True Color PWM Dimming =
3000:1, ISD < 5μA, 4mm × 4mm QFN-16 Package
VIN: 4.5V to 55V, Dimming = 200:1 True Color PWM, ISD < 15μA,
2mm × 2mm DFN-6 and SC70 Packages
LT3592
36V, 2.2MHz, 500mA Buck Mode LED Driver
VIN: 3.6V to 36V, True Color PWM Dimming = 10:1, ISD < 1μA, 2mm × 3mm
DFN-10 and MSOP-10E Packages
LT3595
45V, 2.5MHz 16-Channel Full Featured LED Driver
VIN: 4.5V to 55V, VOUT(MAX) = 45V, True Color PWM Dimming = 5000:1,
ISD < 1μA, 5mm × 9mm QFN-56 Package
24 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
3598fb
LT 0710 REV B • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2008
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