DC1041A-B: 4.5V~28Vin, 12A Step Down Regulator

Summary

Demonstration circuit DC1041A-A features the LTM®4601EV, a 12A high efficiency, high density switch mode step-down converter. The input voltage range is from 4.5V to 28V. The output voltage is jumper selectable for popular voltages from 0.6V to 5V. The PLLIN pin supports synchronizing the μModule® regulator to an external clock.

The TRACK/SS pin allows the user to program output ramp-up and ramp-down rates which may coincidentally or ratiometrically track with another supply’s output if desired. Output voltage margining of ±5% from the nominal value is available via the margin control pins MARG0 and MARG1.

Specifications

Manufacturer	Analog Devices Inc.
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Single Output
Eval Board Part Number	DC1041A-B-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	0.6 V 1.2 V 1.5 V 1.8 V 3.3 V 5 V
Current Out	12 A
Voltage In	4.5 ~ 28 V
Efficiency @ Conditions	>80%, 20V in, 3.3V @ 1.8 ~ 12 A >80%, 12V in, 3.3V @ 1.5 ~ 12 A >75%, 20V in, 1.2V @ 4.5 ~ 12 A >75%, 12V in, 1.2V @ 1.8 ~ 12 A
Voltage Out Range	0.6 ~ 5 V
Features	Current Foldback Protection Current Limit (Adj. or Fixed) Current Sharing Internal Inductor Over Current Protection PFM or PWM Power Good Output Remote Sensing Short Circuit Protection Shutdown, Enable, Standby Soft Start Under Voltage Protection, Brown-Out Voltage Tracking
Switching Frequency	800 kHz
Standby Current [Typical]	22 µA
Quiescent Current [Typical]	42 mA
Component Count + Extras	12 + 45
Internal Switch	Yes
Design Author	Linear Technology
Application / Target Market	Point of Load (PoL) Servers
Standby Current [Maximum]
Quiescent Current [Maximum]
Main I.C. Base Part	LTM4601HV
Date Created By Author	- Not Given
Date Added To Library	2012-03