DC1597A: 3.3V @ 1A, 5 ~ 36V in, Inductor On-Chip

Summary

Demonstration circuit DC1597A features the LTM®8031, a step-down converter certified to meet the EN55022 radiated emissions standard. The LTM8031 is configured to deliver a 3.3V output from a 5V to 36V input with a 750kHz operating frequency.

The wide input range supports a variety of input sources, such as automotive batteries, wall adaptors and industrial supplies. Under light load conditions, the LTM8031 enters Burst Mode® operation to deliver high efficiency over a broad current range and maintain low output ripple.

The LTM8031 data sheet must be read in conjunction with this demo manual prior to working on or modifying demo circuit 1597A.

Specifications

Manufacturer	Analog Devices Inc.
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Single Output
Eval Board Part Number	DC1597A-ND
Eval Board Supplier	Analog Devices Inc.
Eval Board	Normally In Stock
Topology	Step Down
Outputs and Type	1 Non-Isolated
Voltage Out: Factory Set	3.3 V
Current Out	1 A
Voltage In	5 ~ 36 V
Efficiency @ Conditions	- Not Given
Voltage Out Range	- Not Given
Features	Internal Inductor Noise Filtering, On-Chip Power Good Output Shutdown, Enable, Standby Soft Start Synchronizable
Switching Frequency	750 kHz
Standby Current [Typical]	600 nA
Quiescent Current [Typical]	60 µA
Component Count + Extras	9 + 16
Internal Switch	Yes
Design Author	Linear Technology
Application / Target Market	Automotive Point of Load (PoL)
Standby Current [Maximum]
Quiescent Current [Maximum]	120 µA
Main I.C. Base Part	LTM8031
Date Created By Author
Date Added To Library	2011-03