LT3755IUD-1#PBF Linear Technology, LT3755IUD-1#PBF Datasheet - Page 21
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LT3755IUD-1#PBF
Manufacturer Part Number
LT3755IUD-1#PBF
Description
IC LED DRVR HP CONST CURR 16-QFN
Manufacturer
Linear Technology
Type
High Power, Constant Currentr
Datasheet
1.LT3755EUDPBF.pdf
(26 pages)
Specifications of LT3755IUD-1#PBF
Constant Current
Yes
Constant Voltage
Yes
Topology
Flyback, Low Side, PWM, SEPIC, Step-Down (Buck), Step-Up (Boost)
Number Of Outputs
1
Internal Driver
No
Type - Primary
Automotive
Type - Secondary
White LED
Frequency
100kHz ~ 1MHz
Voltage - Supply
4.5 V ~ 40 V
Voltage - Output
75V
Mounting Type
Surface Mount
Package / Case
16-WQFN Exposed Pad
Operating Temperature
-40°C ~ 125°C
Current - Output / Channel
1A
Internal Switch(s)
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Efficiency
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Typical applicaTions
500mA/DIV
INDUCTOR
CURRENT
1A/DIV
GATE
PWM
I
LED
Minimum PWM Pulse Switching Waveform
22V TO
36V
V
IN
L1: TOKO 962BS_3R3M
M1: VISHAY SILICONIX SI7850DP
M2: VISHAY SILICONIX SI2306DS
D1: DIODES, INC SBM540
1M
68.1k
500ns/DIV
0.1µF
4.7µF
Buck Mode 500mA LED Driver for 20kHz PWM Dimming
470pF
SHDN/UVLO
V
CTRL
PWM
INTV
OPENLED
SS
REF
CC
V
C
22k
37551 TA06b
LT3755-2
GND
V
IN
FB
PWMOUT
SENSE
GATE
ISN
ISP
800kHz
RT
13k
0.22µF
LT3755/LT3755-1/LT3755-2
2200pF
100
96
92
88
84
80
15
6V
V
I
LED
LED
= 0.5A
= 16V
0.033
1M
20
3.3µH
0.2
L1
Efficiency vs V
M2
M1
25
500mA
V
4.7µF 2
IN
2.2µF 2
16V
25V
D1
(V)
50V
30
37551 TA03a
IN
35
37551 TA06c
40
37551fd