Design contains obsolete parts

EVAL5985: 3.3V @ 2A, 3.3 ~ 18V in

Summary

The EVAL5985 demonstration board provides the design engineer with a fully functional step-down switching regulator with an output current of up to 2 A. The board integrates STMicroelectronics’ L5985 step-down switching regulator, together with all the external components required for a typical application.

The rated voltage of the input capacitor and the Schottky diode rectifier repetitive peak reverse voltage are both 25 V, making the board capable of covering the entire 2.9 V - 18 V input voltage range of the L5985 device.

The board features an external resistor divider (R1 and R2) designed for an output voltage
of 3.3 V.

The output voltage can be set to a level from 0.6 V up to the rated voltage of the output capacitor
(16 V).

Specifications

Manufacturer STMicroelectronics
Category AC/DC and DC/DC Conversion
Sub-Category DC/DC SMPS - Single Output
Eval Board Part Number 497-6387-ND
Eval Board Supplier STMicroelectronics
Eval Board Board not Stocked
Topology Step Down
Outputs and Type 1 Non-Isolated
Voltage Out: Factory Set 3.3 V
Current Out 2 A
Voltage In 3.3 ~ 18 V
Efficiency @ Conditions >86%, 5V in, 3.3V @ 0.1 ~ 2.1 A
>85%, 12V in, 3.3V @ 0.5 ~ 2.1 A
Voltage Out Range 0.6 ~ Vin
Features Over Current Protection
Over Voltage Protection
Shutdown, Enable, Standby
Soft Start
Synchronizable
Thermal Protection
Switching Frequency 500 kHz
Standby Current [Typical] 20 µA
Quiescent Current [Typical]
Component Count + Extras 14 + 5
Internal Switch Yes
Design Author STMicroelectronics
Application / Target Market Computers
FPGA / DSP / Processors
Point of Load (PoL)
Set-Top Boxes
Telecom
Standby Current [Maximum] 30 µA
Quiescent Current [Maximum] 2.4 mA
Main I.C. Base Part L5985
Date Created By Author
Date Added To Library 2011-03

Support Documents & Media

L5985 - Datasheet / User Guide EVAL5985 - Data Brief

Media

EVAL5985_Schematic.JPG EVAL5985_Board.JPG