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LT3761EMSE-1#PBF

Description
LT3761/LT3761-1 - 60VIN LED Controller with Internal PWM Generator; Package: MSOP; Pins: 16; Temperature Range: -40°C to 85°C
CategoryAnalog mixed-signal IC    Drivers and interfaces   
File Size567KB,32 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
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LT3761EMSE-1#PBF Overview

LT3761/LT3761-1 - 60VIN LED Controller with Internal PWM Generator; Package: MSOP; Pins: 16; Temperature Range: -40°C to 85°C

LT3761EMSE-1#PBF Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?conform to
Objectid8180805994
Parts packaging codeMSOP
Contacts16
Manufacturer packaging codeMSE
Reach Compliance Codecompliant
Date Of Intro2016-06-06
Interface integrated circuit typeLED DISPLAY DRIVER
JESD-609 codee3
Terminal surfaceMATTE TIN
LT3761/LT3761-1
60V
IN
LED Controller with
Internal PWM Generator
FeaTures
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DescripTion
The
LT
®
3761/LT3761-1
is a DC/DC controller designed to
operate as a constant-current source and constant-voltage
regulator. It features a programmable internal PWM dim-
ming signal. The LT3761/LT3761-1 is ideally suited for
driving high current LEDs, but also has features to make
it suitable for charging batteries and supercapacitors.
The fixed frequency, current mode architecture results in
stable operation over a wide range of supply and output
voltages. A voltage feedback pin serves as the input for
several LED protection features, and also makes it possible
for the converter to operate as a constant-voltage source.
A frequency adjust pin allows the user to program the
frequency from 100kHz to 1MHz to optimize efficiency,
performance or external component size. The LT3761-1
can be synchronized to an external clock.
The LT3761/LT3761-1 senses output current at the high
side or at the low side of the load. The PWM input can be
configured to self-oscillate at fixed frequency with duty
ratio programmable from 4% to 96%. When driven by
an external signal, the PWM input provides LED dimming
ratios of up to 3000:1. The CTRL input provides additional
analog dimming capability.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
True Color PWM is a trademark of Analog Devices, Inc. All other trademarks are the property of
their respective owners. Protected by U.S. Patents including 7199560, 7321203.
n
n
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3000:1 True Color PWM™ Dimming for LEDs
Wide V
IN
Range: 4.5V to 60V
Rail-to-Rail Current Sense Range: 0V to 80V
Programmable PWM Dimming Signal Generator
Constant Current (±3%) and Constant-Voltage
(±2%) Regulation
Analog Dimming
Drives LEDs in Boost, SEPIC, Inverting, Buck Mode,
Buck-Boost Mode, or Flyback Configuration
Output Short-Circuit Protected Boost
Open LED Protection
Adjustable Switching Frequency: 100kHz to 1MHz
Programmable V
IN
UVLO with Hysteresis
C/10 Indication for Battery Chargers
Low Shutdown Current: <1µA
Thermally Enhanced 16-Lead MSOP Package
Open LED Status Pin (LT3761)
Frequency Synchronization (LT3761-1)
applicaTions
n
n
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High Voltage LED Strings >100V with Ground
Referred Current Sense
Grounded Anode LEDs
Accurate Current Limited Voltage Regulators
Typical applicaTion
94% Efficient Boost LED Driver for Automotive
Headlamp with 25:1 Internal PWM Dimming
V
IN
8V TO
60V
10µH
2.2µF
×2
499k
90.9k
EN/UVLO
V
REF
1M
CTRL
INTV
CC
100k
DIM
OPENLED
DIM/SS
PWM
V
C
47nF
300Hz
5.1k
4.7nF
140k
V
IN
PWM Dimming Waveforms at
Various DIM Voltage Settings
1A
I
LED
1A/DIV
V
DIM
= 7.7V
DC
PWM
= 96%
V
DIM
= 4V
DC
PWM
= 50%
V
DIM
= 1.5V
DC
PWM
= 10%
V
DIM
= 0.4V
DC
PWM
= 4.3%
0.5ms/DIV
37611 TA01b
GATE
SENSE
10m
GND
FB
ISP
ISN
2.2µF
×4
1M
0.25
LT3761
16.9k
124k
0.01µF
PWMOUT
RT INTV
CC
28.7k
350kHz
INTV
CC
1µF
60W
LED
STRING
37611 TA01a
37611fb
For more information
www.linear.com/LT3761
1

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Description LT3761/LT3761-1 - 60VIN LED Controller with Internal PWM Generator; Package: MSOP; Pins: 16; Temperature Range: -40°C to 85°C IC LED DRIVER CTRLR DIM 16MSOP LT3761/LT3761-1 - 60VIN LED Controller with Internal PWM Generator; Package: MSOP; Pins: 16; Temperature Range: -40°C to 85°C IC LED DRIVER CTRLR DIM 16MSOP LT3761/LT3761-1 - 60VIN LED Controller with Internal PWM Generator; Package: MSOP; Pins: 16; Temperature Range: -40°C to 85°C LT3761/LT3761-1 - 60VIN LED Controller with Internal PWM Generator; Package: MSOP; Pins: 16; Temperature Range: -40°C to 85°C IC LED DRIVER CTRLR DIM 16MSOP LT3761/LT3761-1 - 60VIN LED Controller with Internal PWM Generator; Package: MSOP; Pins: 16; Temperature Range: -40°C to 85°C
Brand Name Linear Technology - Linear Technology - Linear Technology Linear Technology - Linear Technology
Is it Rohs certified? conform to - conform to - conform to conform to - conform to
Objectid 8180805994 - 1243176540 - 1243176536 1243176539 - 8180805996
Parts packaging code MSOP - MSOP - MSOP MSOP - MSOP
Contacts 16 - 16 - 16 16 - 16
Manufacturer packaging code MSE - MSE - MSE MSE - MSE
Reach Compliance Code compliant - compliant - compliant compliant - compliant
Interface integrated circuit type LED DISPLAY DRIVER - LED DISPLAY DRIVER - LED DISPLAY DRIVER LED DISPLAY DRIVER - LED DISPLAY DRIVER
JESD-609 code e3 - e3 - e3 e3 - e3
Terminal surface MATTE TIN - MATTE TIN - MATTE TIN MATTE TIN - MATTE TIN
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