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LTM8042/LTM8042-1 - μModule (Power Module) Boost LED Driver and Current Source

Datasheet

Documentation

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LTM8042 Demo Circuit - 1A µModule Boost LED Driver (12V to 5x 3.4V LEDs @ 1A)
LTM8042-1 Demo Circuit - 350mA µModule Boost LED Driver (12V to 7x 3.4V LEDs @ 350mA)

Overview

Features

True Color PWM™ with 3000:1 Dimming Ratio
Operates in Boost, Buck Mode or Buck-Boost Mode
Wide Input Voltage Range:
Operation from 3V to 30V
Transient Protection to 40V
Gate Driver for Optional PWM Dimming with P-channel MOSFET
Adjustable Frequency: 250kHz to 2MHz
Constant-Current and Constant-Voltage Regulation
Low Shutdown Current: <1μA
RoHS Compliant Package with Gold Pad Finish
Tiny, Low Profile (9mm × 15mm × 2.82mm) Surface Mount LGA Package

Typical Application

Description

The LTM8042 is a complete μModule (power module) Boost LED Driver specifically designed to drive LEDs up to 1A, while the LTM8042-1 drives up to 350mA. It combines a boost power topology with a unique current loop to operate as a constant-current source. The PWM input provides as much as 3000:1 LED dimming, while 10:1 analog dimming can be accomplished by a single resistor or analog voltage applied to the CTL pin. As with any boost topology, the LTM8042/LTM8042-1 has an uninterrupted current path between its input and output and is thus intolerant to a short-circuit or overload from the output to ground.

The LTM8042/LTM8042-1 is packaged in a thermally enhanced, compact overmolded land grid array (LGA) package. The LTM8042/LTM8042-1 is Pb-free and a RoHS compliant.

Packaging

15mm x 9mm x 2.82mm LGA

Order Info

Package Variations and Pricing

Part Number	Package	Pins	Temp	Price (1-99)	Price (1k)^*
LTM8042EV#PBF	LGA	56	E	$12.51	$8.76
LTM8042EV-1#PBF	LGA	56	E	$12.51	$8.76
LTM8042IV#PBF	LGA	56	I	$13.39	$9.37
LTM8042IV-1#PBF	LGA	56	I	$13.39	$9.37

^* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number	Description	Price	Documentation
DC1511A-A	LTM8042EV Demo Board \| uModule Boost LED Driver, 3V ≤ VIN ≤ 30V, Vout up to 32V @ 1A	$65.00	Design File Manual Schematic ltspice Software
DC1511A-B	LTM8042EV-1 Demo Board \| uModule Boost LED Driver, 3V ≤ VIN ≤ 30V, Vout up to 32V @ 350mA	$65.00	Design File Manual Schematic ltspice Software