ST8R00 datasheet(1/19 Pages) STMICROELECTRONICS

部件名	ST8R00

功能描述	Micropower 1A synchronous step-up DC-DC converter

PDF	19 Pages

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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1 / 19 page

May 2007

Rev. 1

1/19

19

ST8R00

Micropower 1A synchronous step-up DC-DC converter

Features

■ Very low supply current: 500µA (typ)

■ Output voltage adjustable from 6V to 12V

■ Output voltage accuracy: ±2%

■ Output current up to 1A

■ Low ripple voltage: 5mV (typ)

■ Synchronous rectification

■ High 90% efficiency: VO = 9V (typ)

■ Few external components

■ Very small DFN8 (4x4mm) package

Description

The ST8R00 family of low quiescent current,

synchronous PWM step-up DC-DC converters

offer high efficiency even in light load conditions.

The ST8R00 accepts a positive input voltage from

4 to 6V and provides an output voltage in the 6 to

12V range.

The ST8R00 is developed in two versions: Burst

mode and Continuous mode. The Burst mode

version functions in discontinuous mode, allowing

the device to maintain the regulated voltage in no

load conditions by turning off the internal

switches. The Continuous mode version,

ST8R00W, guarantees the lowest switching ripple

when the device is used at light load conditions.

The high switching frequency and internally

limited peak inductor current permit the use of

small, low-cost inductors. Only three external

components are required: an inductor and two

ceramic capacitors.

The ST8R00 is suitable for use in equipment

where low noise, low ripple and low supply current

are required. The ST8R00 is available in a very

small DFN8 4x4mm package.

DFN8 4x4mm

www.st.com

Order codes

Part number

Package

Output voltages

ST8R00 (1)

1.

Burst mode at light load

ST8R00PUR

ADJ

ST8R00W (2)

2.

Full PWM mode

ST8R00WPUR

ADJ

类似零件编号 - ST8R00

制造商	部件名	数据表	功能描述
STMicroelectronics	ST8R00	770Kb / 18P	Micropower 1 A synchronous step-up DC-DC converter 01-Feb-2012
Littelfuse	ST8R001B	685Kb / 3P	Power Thermistors Inrush Current Limiting Power Thermistor
	ST8R003B	685Kb / 3P	Power Thermistors Inrush Current Limiting Power Thermistor
	ST8R006B	685Kb / 3P	Power Thermistors Inrush Current Limiting Power Thermistor
STMicroelectronics	ST8R00PUR	770Kb / 18P	Micropower 1 A synchronous step-up DC-DC converter 01-Feb-2012

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