DC1511A-A: 1A @ 36V Max, 3 ~ 30V in, Inductor On-Chip

Summary

Demonstration circuits 1511A-A and 1511A-B feature the LTM®8042 and the LTM8042-1, which are respectively complete 1A and 350mA µModule LED drivers. The demonstration circuits are assembled as boost topologies, accepting an input voltage from 3V to 30V and supporting an output up to 32V (see Table 1).

The default switching frequency is 600kHz for DC1511A-A and 950kHz for DC1511A-B, but can be adjusted by changing the value of RT.

DC1511A is easily configured to support other features, including PWM dimming, analog dimming, buck-boost mode and buck mode (step-down). DC1511A includes a P-channel MOSFET that is necessary for PWM dimming.

True Color PWM™ provides a 3000:1 dimming ratio.

Specifications

Manufacturer	Analog Devices Inc.
Category	Lighting
Sub-Category	LED Drivers - DC In
Eval Board Part Number	DC1511A-A-ND
Eval Board Supplier	Analog Devices Inc.
Eval Board	Normally In Stock
Voltage In	3 ~ 30 V
Topology	Step Up
Current Out	1 A
Voltage Out (Max)	36 V
Outputs and Type	1 Non-Isolated
Efficiency @ Conditions	>88%, 9 ~ 15V in, 16.7Vf @ 1 A
Features	Dimming Control Internal Inductor Open Circuit Protection Soft Start Synchronizable
Switching Frequency	600 kHz
Component Count + Extras	5 + 19
Design Author	Linear Technology
Application / Target Market	Automotive Avionic LCD Backlighting
Main I.C. Base Part	LTM8042
Date Created By Author	2010-10
Date Added To Library	2011-04