LT3743IFE#PBF Linear Technology, LT3743IFE#PBF Datasheet - Page 28

• Manufacturer Part Number: LT3743IFE#PBF
• Description: IC LED DVR HP CONST CURR 28TSSOP
• Manufacturer: Linear Technology
• Type: High Power, Constant Currentr

Specifications of LT3743IFE#PBF

• Topology: High Side, Low Side, PWM, Step-Down (Buck)
• Number Of Outputs: 1
• Internal Driver: No
• Type - Primary: General Purpose
• Type - Secondary: RGB
• Frequency: 200kHz ~ 1MHz
• Voltage - Supply: 6 V ~ 36 V
• Mounting Type: Surface Mount
• Package / Case: 28-TSSOP Exposed Pad, 28-eTSSOP, 28-HTSSOP
• Operating Temperature: -40°C ~ 125°C
• Internal Switch(s): Yes
• Efficiency: 92%
• Led Driver Application: Lighting
• No. Of Outputs: 1
• Output Current: 20A
• Output Voltage: 40V
• Input Voltage: 6V To 36V
• Dimming Control Type: PWM
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Current - Output / Channel: -

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
28
499Ω
R
HOT
1μF
50k
R
10k
NTC
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
50k
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
●
22μF
www.linear.com
4.7μF
×8
1nF
33nF
L1: 1HLP5050FDER1R0M01
M1, M2: RJK0330DPB
M3, M4: Si7234DP
C1, C2, C3: PTPR33OM9L
M1
×2
M2
×2
1μH
L1
220μF
1.25mΩ
10Ω
10Ω
220μF
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
C1
330μF
×3
C2
330μF
×3
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
C3
330μF
×3
40A MAXIMUM
1μF
OUTPUT
OUT(MAX)
OUT(MAX)
OUT(MAX)
OUT(MAX)
140k
20k
3743 TA08
OUT(MAX)
OUT(MAX)
OUT(MAX)
OUT(MAX)
D1
= 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
LT 0810 REV B • PRINTED IN USA
V
IN
SD
SD
20μs/DIV
= 12V
< 1μA,
< 1μA,
3743 TA08b
3743fb