DC1623A: 3.3V @ 3A, 5.5 ~ 36V in

Summary

Demonstration circuit DC1623A features the LTM®8033, a low-EMI EN55022 Class B certified step-down μModule® regulator, pre-configured for a 3.3V output from a 5.5V to 36V input.

The circuit supports other features of the LTM8033 including synchronization to an external clock, current sharing with another LTM8033 μModule regulator, and burst mode operation for improved efficiency at light loads.

The LTM8033 data sheet must be read in conjunction with this quick start guide prior to working on or modifying demo circuit DC1623A.

Specifications

Manufacturer Analog Devices Inc.
Category AC/DC and DC/DC Conversion
Sub-Category DC/DC SMPS - Single Output
Eval Board Part Number DC1623A-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 3 A
Voltage In 5.5 ~ 36 V
Efficiency @ Conditions >81%, 12V in, 3.3V @ 0.2 ~ 3 A
>80%, 5.5V in, 3.3V @ 0.1 ~ 2.8 A
>80%, 24V in, 3.3V @ 0.4 ~ 3 A
>79%, 36V in, 3.3V @ 0.7 ~ 3 A
Voltage Out Range 0.8 ~ 24 V
Features Frequency Foldback
Internal Inductor
Noise Filtering, On-Chip
Power Good Output
Short Circuit Protection
Shutdown, Enable, Standby
Soft Start
Synchronizable
Thermal Protection
Switching Frequency 425 kHz
Standby Current [Typical] 10 nA
Quiescent Current [Typical] 30 µA
Component Count + Extras 10 + 19
Internal Switch Yes
Design Author Linear Technology
Application / Target Market Point of Load (PoL)
Portable Devices
Standby Current [Maximum] 1 µA
Quiescent Current [Maximum] 60 µA
Main I.C. Base Part LTM8033
Date Created By Author 2010-06
Date Added To Library 2012-04

Eval Board

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Support Documents & Media

DC1623A - User Guide LTM8033 - Datasheet LTM8033 - Spice Model

Media

DC1623A_Schematic_Full.PNG DC1623A_Board_Full.JPG DC1623A_Chart_1_Full.PNG