DC484A: 12mA @ 13V Max, 2.7 ~ 5V in, Boost


DC484A features the LT1937 constantcurrent white LED driver in a small SOT23 ThinSOT package. The demo board is designed to demonstrate the high efficiency performance and the small size of the LT1937.

The LT1937 features a 95mV feedback voltage, 1.2MHz switching frequency and a special internal compensation network, which allows small (0603) input and output capacitors. LT1937 offers numerous LED dimming circuit options for a wide range of control options.

DC484 is specifically designed for white LED backlight applications using 2–4 LEDs, making LT1937-SOT23 an ideal solution for battery powered portable applications such as cellular phones, digital cameras, MP3 players, GPS receivers, and handheld computers (PDAs).


Manufacturer Analog Devices Inc.
Category Lighting
Sub-Category LED Drivers - DC In
Eval Board Part Number DC484A-ND
Eval Board Supplier Analog Devices Inc.
Eval Board Normally In Stock
Voltage In 2.7 ~ 5 V
Topology Step Up
Current Out 12 mA
Voltage Out (Max) 13 V
Outputs and Type 1 Non-Isolated
Efficiency @ Conditions >82%, 3V in, 10 ~ 20 mA
>82%, 3.6V in, 10 ~ 20 mA
Features Current Limit (Adj. or Fixed)
Dimming Control
Open Circuit Protection
PWM Interface
Shutdown, Enable, Standby
Soft Start
Switching Frequency 1.2 MHz
Component Count + Extras 15 + 7
Design Author Linear Technology
Application / Target Market Audio: MP3 Players
Cell Phones
Digital Cameras
Flashlight / Torch
Portable Devices
Main I.C. Base Part LT1937
Date Created By Author 2001-12
Date Added To Library 2019-03

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