LT3743IUFD#PBF Linear Technology, LT3743IUFD#PBF Datasheet - Page 6

• Manufacturer Part Number: LT3743IUFD#PBF
• Description: IC LED DRVR HP CONST CURR 28QFN
• Manufacturer: Linear Technology
• Type: High Power, Constant Currentr

Specifications of LT3743IUFD#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-QFN
• 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
• Operating Temperature Range: -40°C To +125°C
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Current - Output / Channel: -

LT3743
TYPICAL PERFORMANCE CHARACTERISTICS
6
5.0
4.5
4.0
3.5
3.0
6.0
5.6
4.8
4.4
4.0
5.2
11
19
17
15
13
9
–50
–50
0
Internal UVLO
V
Open-LED Timeout
CC_INT
10
–15
–15
Load Reg at 12V
TEMPERATURE (°C)
TEMPERATURE (°C)
20
20
20
I
LOAD
30
(mA)
55
55
40
90
90
50
3743 G10
3743 G13
3743 G16
125
125
60
3.00
2.75
2.50
2.25
2.00
1.75
1.50
120
100
80
60
40
20
60
50
40
30
20
10
0
0
–50
800
0
CBOOT-SW UVLO Voltage
Regulated Current vs V
Regulated Sense Voltage
–15
850
0.5
TEMPERATURE (°C)
900
20
V
V
CTRL
FB
125°C
1.0
(mV)
(V)
950
55
–50°C
FB
1.5
1000
90
3743 G14
3743 G11
3743 G17
1050
125
2.0
4.00
3.75
3.50
3.25
3.00
2.75
2.50
1.5
1.4
1.1
1.3
1.2
1.0
2.5
2.0
1.0
0.5
1.5
0
–50
–50
–50
V
Open-LED Threshold
Common Mode Lockout
MEASURED V
CC_INT
–15
–15
–15
UVLO
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
IN
V
IN
20
20
– V
20
= 36V
OUT
V
IN
55
55
= 6V
55
90
90
90
3743 G12
3743 G15
3743 G18
3743fb
125
125
125