DC1533A: -5V @ 700mA Inverting, 2.8 ~ 18V in

Summary

Demo circuit DC1533A features the LTM®8045, an inverting/SEPIC μModule converter delivering up to 700mA of output current. DC1533A is configured as an inverting converter, but can be easily changed to a SEPIC configuration for non-inverting step-up or step-down functionality.

The user adjustable features of the LTM8045 such as output voltage, switching frequency, soft-start period and undervoltage lockout can be changed on DC1533A simply by modifying or installing the appropriate resistors or capacitor.

The LTM8045 data sheet must be read in conjunction with this demo manual to properly use or modify demo circuit DC1533A.

Specifications

Manufacturer	Analog Devices Inc.
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Single Output
Eval Board Part Number	505-DC1533A-ND
Eval Board Supplier	Analog Devices Inc.
Eval Board	Normally In Stock
Topology	Inverting
Outputs and Type	1 Non-Isolated
Voltage Out: Factory Set	-5 V
Current Out	700 mA
Voltage In	2.8 ~ 18 V
Efficiency @ Conditions	>79%, 5V in, -5V @ 150 ~ 420 mA >75%, 5V in, -15V @ 70 ~ 220 mA >75%, 3.3V in, -5V @ 70 ~ 340 mA >73%, 12V in, -5V @ 200 ~ 590 mA >72%, 18V in, -5V @ 300 ~ 600 mA >70%, 18V in, -15V @ 150 ~ 430 mA >70%, 12V in, -15V @ 110 ~ 380 mA
Voltage Out Range	-4.83 ~ -5.19 V
Features	Shutdown, Enable, Standby Soft Start Synchronizable Under Voltage Protection, Brown-Out
Switching Frequency	200 kHz ~ 2 MHz
Standby Current [Typical]	0 µA
Quiescent Current [Typical]	10 mA
Component Count + Extras	6 + 21
Internal Switch	Yes
Design Author	Linear Technology
Application / Target Market	Point of Load (PoL) Power: Auxiliary Power Supply RF: LNA Power
Standby Current [Maximum]	1 µA
Quiescent Current [Maximum]	- Not Given
Main I.C. Base Part	LTM8045
Date Created By Author	2012-11
Date Added To Library	2013-12