LTM8040 Series

36V, 1A μModule (Power Module) LED Driver and Current Source

Catalog

36V, 1A μModule (Power Module) LED Driver and Current Source

Part	Dimming	Size / Dimension [z]	Size / Dimension [x]	Size / Dimension [x]	Size / Dimension [z]	Size / Dimension [y]	Size / Dimension [y]	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Output [Max]	Voltage - Output [Min]	Voltage - Input (Min) [Min]	Weight	Weight	Power (Watts)	Number of Outputs	Features	Type	Voltage - Input (Max) [Max]	Current - Output (Max) [Max]	Package / Case	Mounting Type	Topology
Analog Devices LTM8040IV#PBF	Analog PWM	4.3 mm	0.59 in	15 mm	0.17 in	0.35 "	9 mm	125 °C	-40 °C	13 V	2.5 V	3.5 V	1.81 g	0.004 lb	13 W	1	OTP Remote On/Off SCP UVLO	Constant Current	36 V	1 A	66-LGA	Surface Mount	Buck
Analog Devices LTM8040EV#PBF	Analog PWM	4.3 mm	0.59 in	15 mm	0.17 in	0.35 "	9 mm	125 °C	0 °C	13 V	2.5 V	3.5 V	1.81 g	0.004 lb	13 W	1	OTP Remote On/Off SCP UVLO	Constant Current	36 V	1 A	66-LGA	Surface Mount	Buck

Catalog

36V, 1A μModule (Power Module) LED Driver and Current Source

Key Features

• True Color PWM™Delivers Constant Color with 250:1 Dimming Ratio

• Wide Input Range: 4V to 36V

• Up to 1A LED Current

• Adjustable Control of LED Current

• High Output Current Accuracy is Maintained Over a Wide Range from 35mA to 1A

• Open LED and Short-Circuit Protection

• Grounded LED Cathode Connection

• Small Footprint (15mm × 9mm × 4.32mm) Surface Mount LGA Package

Description

The LTM8040 is a fixed frequency 1A step-down DC/DC μModule®(power module) regulator designed to operate as a constant current source. Internal circuitry monitors the output current to provide accurate current regulation, which is ideal for driving high current LEDs. High output current accuracy is maintained over a wide current range, from 35mA to 1A, allowing a wide dimming range over an output voltage range of 2.5V to 13V. Unique PWM circuitry allows a dimming range of 250:1, avoiding the color shift normally associated with LED current dimming.With its wide input range of 4V to 36V, the LTM8040 regulates a broad array of power sources, from 4-cell batteries and 5V logic rails to unregulated wall transformers, lead acid batteries and distributed power supplies.The LTM8040 is packaged in a thermally enhanced, compact (15mm × 9mm × 4.32mm) molded Land Grid Array (LGA) package suitable for automated assembly by standard surface mount equipment. The LTM8040 is Pb-free and RoHS compliant.ApplicationsAutomotive and Avionic LightingArchitectural Detail LightingDisplay BacklightingConstant Current Sources