LT3761H 데이터 시트보기 (PDF) - Linear Technology
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LT3761H Datasheet PDF : 28 Pages
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LT3761
Typical Application
80W High Voltage Boost LED Driver with 25:1 Internally Generated PWM Dimming
HV Boost Efficiency and
LED Current vs VIN
100
1.0
PWM TIED TO INTVCC
VIN
12V TO
60V
2.2µF
×2
187k
100V
21k
INTVCC
L1
22µH
VIN
EN/UVLO
GATE
VREF
SENSE
590k
LT3761
CTRL
20k
GND
100k
DIM
0V TO
8V 124k
0.1µF
10nF
1.4kHz
FB
OPENLED PWMOUT
DIM/SS
ISP
PWM
ISN
VC
RT INTVCC
2k
4.7nF
39.2k
250kHz
M1, M2: INFINEON BSC520N15
D1: DIODES PDS4150
L1: COILTRONICS HC9-220-R
COUT: TDK C3225X7R2E224K
D1
COUT
M1
0.22µF
×8
1M
250V 0805
12mΩ
8.66k
80W
LED
STRING
135V MAX
96
0.8
EFFICIENCY
92
0.6
LED CURRENT
88
0.4
84
0.2
80
0.6
10
20
30
40
50
60
VIN (V)
37551 TA03b
INTVCC
1µF
M2
0.39Ω 650mA
CURRENT DERATED
FOR VIN < 35V
3761 TA03a
Dimming Waveform
PWM
(1V/DIV) DIM = 4V
VIN = 36V
VLED = 134V
ILED
(0.2A/DIV)
200µs/DIV
3761 TA03c
Related Parts
PART NUMBER DESCRIPTION
COMMENTS
LT3755/LT3755-1/ High Side 40V, 1MHz LED Controller with True Color 3000:1
LT3755-2
PWM Dimming
LT3756/LT3756-1/ High Side 100V, 1MHz LED Controller with True Color 3000:1
LT3756-2
PWM Dimming
LT3796
High Side 100V, 1MHz LED Controller with True Color 3000:1
PWM Dimming, PMOS Disconnect FET Driver, Input Current
Limit and Input/Output Current Reporting
VIN: 4.5V to 40V, VOUT(MAX) = 75V, 3000:1 True Color PWM Dimming
ISD < 1μA, 3mm × 3mm QFN-16 and MSOP-16E Packages
VIN: 6V to 100V, VOUT(MAX) = 100V, 3000:1 True Color PWM Dimming
ISD < 1μA, 3mm × 3mm QFN-16 and MSOP-16E Packages
VIN: 6V to 100V, VOUT(MAX) = 100V, 3000:1 True Color PWM Dimming
ISD < 1μA, TSSOP-28E Packages
LT3956
LT3754
LT3518
LT3478/LT3478-1
LT3791/LT3791-1
High Side 80V, 3.5A, 1MHz LED Driver with True Color 3,000:1
PWM Dimming
60V, 1MHz Boost 16-Channel 40mA LED Driver with True
Color 3000:1 PWM Dimming and 2% Current Matching
2.3A, 2.5MHz High Current LED Driver with 3000:1 Dimming
with PMOS Disconnect FET Driver
4.5A, 2MHz High Current LED Driver with 3000:1 Dimming
60V, Synchronous Buck-Boost 700kHz LED Controller
VIN: 6V to 80V, VOUT(MAX) = 80V, True Color PWM Dimming = 3000:1,
ISD < 1μA, 5mm × 6mm QFN-36 Package
VIN: 4.5V to 40V, VOUT(MAX) = 60V, True Color PWM Dimming = 3000:1,
ISD < 1μA, 5mm × 5mm QFN-32 Package
VIN: 3V to 30V, VOUT(MAX) = 45V, 3000:1 True Color PWM Dimming,
ISD < 1μA, 4mm × 4mm QFN-16 and TSSOP-16E Packages
VIN: 2.8V to 36V, VOUT(MAX) = 40V, 3000:1 True Color PWM Dimming,
ISD < 1μA, TSSOP-16E Package
VIN: 4.7V to 60V, VOUT Range: 0V to 60V, True Color PWM,
Analog = 100:1, ISD < 1µA, TSSOP-38E Package
28 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
3761f
LT 0812 • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 2012
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