LT3743IFE#PBF Linear Technology, LT3743IFE#PBF Datasheet - Page 3

• 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: -

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
otherwise noted.
PARAMETER
Input Voltage Range
V
EN/UVLO Pin Falling Threshold
EN/UVLO Hysteresis
EN/UVLO Pin Current
PWM Pin Threshold
CTRL_SEL Threshold
SYNC Pin Threshold
CTRL_H and CTRL_L Pin Control Range
CTRL_H and CTRL_L Pin Current
Reference
Reference Voltage (V
Inductor Current Sensing
Full Range SENSE
SENSE
SENSE
Internal V
Regulation Voltage
NMOS FET Driver (Note 2)
Non-Overlap time HG to LG
Non-Overlap time LG to HG
Minimum On-Time LG
Minimum On-Time HG
Minimum Off-Time LG
High Side Driver Switch On-Resistance
Low Side Driver Switch On-Resistance
Switching Frequency
f
Soft-Start
Charging Current
Voltage Regulation Amplifi er
Input Bias Current
g
Feedback Regulation Voltage
SW
m
IN
Non-Switching Operation
Shutdown Mode
Gate Pull Up
Gate Pull Down
Gate Pull Up
Gate Pull Down
Pin Quiescent Current (Note 3)
+
–
Pin Current
Pin Current
CC
Regulator (V
+
to SENSE
REF
Pin)
CC_INT
–
Pin)
CONDITIONS
V
V
V
V
V
V
(Note 3)
(Note 3)
(Note 3)
V
V
R
R
V
I
SENSE
PWM
EN/UVLO
IN
CTRL_H
SENSE
SENSE
CBOOT
CC_INT
T
T
CTRL_H
= 40kΩ
= 200kΩ
= 6V, EN/UVLO = 1.45V
–
= V
+
+
– V
= 14μA
= 5V
= 1.5V, V
= V
= V
= 0V, V
= 0V
CTRL_SEL
A
SW
SENSE
SENSE
= 25°C. V
= 5V
CTRL_L
SENSE
–
–
The
= 0V, Not Switching, R
= 6V
= 6V
= 2V, V
–
l
IN
= 6V
denotes the specifi cations which apply over the full operating
= 12V, V
SENSE
+
EN/UVLO
= 2V,
T
= 40k
= 5V, V
SYNC
l
l
l
l
l
l
= 0V, V
0.945
1.49
1.96
MIN
900
190
4.7
48
6
0
CTRL_SEL
1000
1.55
TYP
130
100
100
200
200
= 0V, V
1.8
0.1
1.0
1.0
1.0
2.3
1.3
2.5
1.3
5.5
5.5
51
50
10
60
50
80
60
2
5
1
1
PWM
1.025
1070
MAX
1.61
2.04
LT3743
233
2.5
1.5
5.2
36
54
1
= 2V, unless
UNITS
3743fb
3
μA/V
kHz
kHz
mA
mV
mV
μA
μA
nA
nA
μA
μA
nA
ns
ns
ns
ns
ns
Ω
Ω
Ω
Ω
V
V
V
V
V
V
V
V
V