lt3743 Linear Technology Corporation, lt3743 Datasheet - Page 28

• Manufacturer Part Number: lt3743
• Description: High Current Synchronous Step-down Led Driver With Three-state Control
• Manufacturer: Linear Technology Corporation

LT3743
TYPICAL APPLICATION
RELATED PARTS
PART NUMBER
LT3755/LT3755-1
LT3756/LT3756-1
LTC3783
LT3517
LT3518
LT3496
LT3474/LT3474-1
LT3475/LT3475-1
LT3476
LT3478/LT3478-1
True Color PWM is a trademark of Linear Technology Corporation.
28
45.2k
R
HOT
1μF
40k
R
680k
NTC
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
40k
CTRL_SEL
150k
EN/UVLO
DESCRIPTION
High Side 40V, 1MHz LED Controller with True Color
3000:1 PWM Dimming
High Side 100V, 1MHz LED Controller with True Color
3000:1 PWM Dimming
High Side 36V, 1MHz LED Controller with True Color
3000:1 PWM Dimming
1.3A, 2.5MHz High Current LED Driver with 3000:1
Dimming
2.3A, 2.5MHz High Current LED Driver with 3000:1
Dimming
Triple Output 750mA, 2.1MHz High Current LED Driver
with 3000:1 Dimming
36V, 1A (I
Dual 1.5A (I
Quad Output 1.5A, 2MHz High Current LED Driver with
1000:1 Dimming
4.5A, 2MHz High Current LED Driver with 3000:1
Dimming
1μF
PWM
1μF
1μF
●
5.6nF
FAX: [phone]
51k
EN/UVLO
PWM
CTRL_SEL
RT
SYNC
V
CTRL_L
CTRL_H
CTRL_T
SS
LED
REF
VCL
LED
), 2MHz Step-Down LED Driver
24V, 40A Pulsed LED Driver
LT3743
), 36V Step-Down LED Driver
PWMGH
PWMGL
V
SENSE
SENSE
CBOOT
VCH
CC_INT
GND
SW
V
HG
LG
51k
FB
IN
+
–
5.6nF
220nF
●
20μF
www.linear.com
4.7μF
1nF
33nF
8
M1
M2
800nH
L1
200μF
1.25mΩ
10Ω
10Ω
200μF
COMMENTS
V
I
V
I
V
I
V
4mm × 4mm QFN16
V
4mm × 4mm QFN16
V
I
V
I
V
I
V
I
V
I
M3
SD
SD
SD
SD
SD
SD
SD
SD
V
24V
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
1mF
1mF
IN
: 4.5V to 40V, V
: 6V to 100V, V
: 3V to 36V, V
: 3V to 30V, Dimming = 3000:1 True Color PWM, I
: 3V to 30V, Dimming = 3000:1 True Color PWM, I
: 3V to 30V, V
: 4V to 36V, V
: 4V to 36V, V
: 2.8V to 16V, V
: 2.8V to 36V, V
< 1μA, 3mm × 3mm QFN16, MSOP16E
< 1μA, 3mm × 3mm QFN16, MSOP16E
< 20μA, 4mm × 5mm DFN16, TSSOP16E
< 1μA, 4mm × 5mm QFN28
< 1μA, TSSOP16E
< 1μA, TSSOP20E
< 10μA, 5mm × 7mm QFN10
< 10μA, 5mm × 7mm QFN10
M4
1mF
40A MAXIMUM
D1
V
OUT
OUT(MAX)
OUT(MAX)
OUT(MAX)
OUT(MAX)
140k
20k
3743 TA08
OUT(MAX)
OUT(MAX)
OUT(MAX)
OUT(MAX)
1μF
= 40V, Dimming = 3000:1 True Color PWM,
= 40V, Dimming = 3000:1 True Color PWM,
= 13.5V, Dimming = 400:1 True Color PWM,
= 13.5V, Dimming = 3000:1 True Color PWM,
= 100V, Dimming = 3000:1 True Color PWM,
= 60V, Dimming = 3000:1 True Color PWM™,
= 36V, Dimming = 1000:1 True Color PWM,
= 40V, Dimming = 1000:1 True Color PWM,
CTRL_SEL
20A/DIV
10V/DIV
5V/DIV
I
© LINEAR TECHNOLOGY CORPORATION 2009
SW
LED
4A to 40A LED Current Step
V
LT 1109 • PRINTED IN USA
IN
SD
SD
20μs/DIV
= 12V
< 1μA,
< 1μA,
3743 TA08b
3743f