LT3952AHFE#TRPBF

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Analog Devices Inc./Maxim Integrated

60V LED DRIVER WITH 4A SWITCH CURRENT

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LT3952AHFE#TRPBF

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Analog Devices Inc./Maxim Integrated

60V LED DRIVER WITH 4A SWITCH CURRENT

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Description Specifications Series Pricing CAD Documents

Description

General part information

LT3952A Series

The LT3952A is a current mode step-up DC/DC converter with an internal, 60V, 80mΩ DMOS power switch. The LT3952A is specifically designed to drive high power LEDs in multiple configurations. It combines input and output current regulation loops with output voltage regulation to operate as a flexible current/voltage source.Programmable switching frequency with optional spread-spectrum modulation provides EMI reduction, while still allowing optimization of the external components for efficiency or component size. The LED current is programmable with an external sense resistor, and can be adjusted from zero to full scale with a voltage at the CTRL pin. The external PWM input provides LED ON/OFF control and 4000:1 dimming ratio, and an internal PWM generator delivers the efficiency of PWM dimming to standalone or I/O limited applications. The LT3952A is available in the thermally enhanced 28-lead TSSOP package.ApplicationsDisplay BacklightingAutomotive and Avionic LightingAccurate Current-Limited Voltage Regulators

Technical Specifications

Parameters and characteristics for this part

Specification	LT3952AHFE#TRPBF

Applications	Backlight
Current - Output / Channel	4 A
Dimming	PWM, Analog
Frequency (Max)	3 MHz
Frequency (Min)	215 kHz
Internal Switch(s)	Yes
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	150 °C
Operating Temperature (Min)	-40 °C
Package Features	Exposed Pad
Package Length	0.173 in
Package Name	28-TSSOP-EP, 28-TSSOP
Package Width	4.4 mm
Topology	Step-Up (Boost)
Type	DC DC Regulator
Voltage - Output	60 V
Voltage - Supply (Max)	42 V
Voltage - Supply (Min)	3 V

LT3952A Series

Part	Package Name	Operating Temperature (Max)	Operating Temperature (Min)	Package Width	Package Features	Package Length	Dimming	Voltage - Supply (Min)	Voltage - Output	Number of Outputs	Mounting Type	Voltage - Supply (Max)	Applications	Internal Switch(s)	Current - Output / Channel	Frequency (Max)	Frequency (Min)	Type	Topology	Grade
Analog Devices Inc./Maxim Integrated LT3952AEFE#TRPBF	28-TSSOP 28-TSSOP-EP	125 °C	-40 °C	4.4 mm	Exposed Pad	0.173 in	Analog PWM	3 V	60 V	1	Surface Mount	42 V	Backlight	Yes	4 A	3 MHz	215 kHz	DC DC Regulator	Step-Up (Boost)
Analog Devices Inc./Maxim Integrated LT3952AEFE#PBF	28-TSSOP 28-TSSOP-EP	125 °C	-40 °C	4.4 mm	Exposed Pad	0.173 in	Analog PWM	3 V	60 V	1	Surface Mount	42 V	Backlight	Yes	4 A	3 MHz	215 kHz	DC DC Regulator	Step-Up (Boost)	Automotive
Analog Devices Inc./Maxim Integrated LT3952AHFE#PBF	28-TSSOP 28-TSSOP-EP	150 °C	-40 °C	4.4 mm	Exposed Pad	0.173 in	Analog PWM	3 V	60 V	1	Surface Mount	42 V	Backlight	Yes	4 A	3 MHz	215 kHz	DC DC Regulator	Step-Up (Boost)
Analog Devices Inc./Maxim Integrated LT3952AHFE#TRPBF	28-TSSOP 28-TSSOP-EP	150 °C	-40 °C	4.4 mm	Exposed Pad	0.173 in	Analog PWM	3 V	60 V	1	Surface Mount	42 V	Backlight	Yes	4 A	3 MHz	215 kHz	DC DC Regulator	Step-Up (Boost)
Analog Devices Inc./Maxim Integrated LT3952AIFE#TRPBF	28-TSSOP 28-TSSOP-EP	125 °C	-40 °C	4.4 mm	Exposed Pad	0.173 in	Analog PWM	3 V	60 V	1	Surface Mount	42 V	Backlight	Yes	4 A	3 MHz	215 kHz	DC DC Regulator	Step-Up (Boost)	Automotive
Analog Devices Inc./Maxim Integrated LT3952AIFE#PBF	28-TSSOP 28-TSSOP-EP	125 °C	-40 °C	4.4 mm	Exposed Pad	0.173 in	Analog PWM	3 V	60 V	1	Surface Mount	42 V	Backlight	Yes	4 A	3 MHz	215 kHz	DC DC Regulator	Step-Up (Boost)

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

R580 Reliability Data

Package Drawing - 28-Lead TSSOP w/ EP

LT3952A: 60V LED Driver with 4A Switch Current Data Sheet (Rev.B)