EVAL5986 datasheet(1/6 Pages) STMICROELECTRONICS

Numer części	EVAL5986

Szczegółowy opis	2.5 A step-down switching regulator demonstration board based on the L5986, L5986A

PDF	6 Pages

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Producent	STMICROELECTRONICS [STMicroelectronics]

Strona internetowa	http://www.st.com

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October 2009

Doc ID 16567 Rev 1

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EVAL5986

EVAL5986A

2.5 A step-down switching regulator demonstration board

based on the L5986, L5986A

Features

■ 2.5 A DC output current

■ 2.9 V to 18 V input voltage

■ Output voltage adjustable from 0.6 V to 16 V

■ 250 kHz switching frequency, programmable

up to 1 MHz

■ Internal soft-start and inhibit

■ Low dropout operation: 100% duty cycle

■ Zero-load current operation

■ Overcurrent and thermal protection

■ VFQFPN8 3 mm x 3 mm package or HSOP8

for the L5986A

Description

The EVAL5986/A demonstration board provides

the design engineer with a fully functional step-

down switching regulator with an output current of

up to 2.5 A. The board integrates

STMicroelectronics’ L5986\A 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 L5986/A device.

The board features an external resistor divider

(R1 and R2) designed for an output voltage

of 1.8 V.

The output voltage can be set to a level from 0.6 V

up to the input voltage.

The compensation network on the demonstration

board allows the use of MLCC as output filter to

keep the loop stable. The inductor saturation

current and forward current of the Schottky diode

are within the current limit values.

The switching frequency on the demonstration

board is set to 500 kHz by means of the R5

resistor connected to pin Fsw.

www.st.com

Podobny numer części - EVAL5986

Producent	Numer części	Arkusz danych	Szczegółowy opis
STMicroelectronics	EVAL5980	287Kb / 6P	0.7 A step-down switching regulator demonstration board based on the L5980 02-Mar-2009
	EVAL5981	209Kb / 6P	1 A step-down switching regulator demonstration board based on the L5981 02-Mar-2009
	EVAL5983	251Kb / 6P	1.5 A step-down switching regulator demonstration board based on the L5983 02-Mar-2009
	EVAL5985	190Kb / 6P	2 A step-down switching regulator demonstration board based on the L5985 19-Jan-2009
	EVAL5987	285Kb / 6P	3 A step-down switching regulator demonstration board based on the L5987, L5987A 04-Nov-2009

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Podobny opis - EVAL5986

Producent	Numer części	Arkusz danych	Szczegółowy opis
STMicroelectronics	EVAL5985	190Kb / 6P	2 A step-down switching regulator demonstration board based on the L5985 19-Jan-2009
	EVAL5987A	286Kb / 6P	3 A step-down switching regulator demonstration board based on the L5987, L5987A 04-Nov-2009
	STEVAL-ISA091V1	104Kb / 4P	2 A step-down switching power supply demonstration board based on the L7980 (QFN) 23-Dec-2011
	STEVAL-ISA092V1	95Kb / 4P	2 A step-down switching demonstration board based on the L7980 21-Dec-2011
	STEVAL-ISA097V1	309Kb / 4P	2 A step-down switching demonstration board based on the L7985 in DFN10 package 27-Apr-2012
	STEVAL-ISA100V1	302Kb / 4P	3 A step-down switching demonstration board based on the L7986A in HSOP8 package 27-Apr-2012
	EVAL5980	287Kb / 6P	0.7 A step-down switching regulator demonstration board based on the L5980 02-Mar-2009
	EVAL5981	209Kb / 6P	1 A step-down switching regulator demonstration board based on the L5981 02-Mar-2009
	EVAL5983	251Kb / 6P	1.5 A step-down switching regulator demonstration board based on the L5983 02-Mar-2009
	EVAL5987	285Kb / 6P	3 A step-down switching regulator demonstration board based on the L5987, L5987A 04-Nov-2009

More results

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