ST8R00 datasheet(1/18 Pages) STMICROELECTRONICS

Il numero della parte	ST8R00

Spiegazioni elettronici	Micropower 1 A synchronous step-up DC-DC converter

PDF	18 Pages

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Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

Homepage	http://www.st.com

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1 / 18 page

February 2012

Doc ID 13449 Rev 2

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18

ST8R00

Micropower 1 A synchronous step-up DC-DC converter

Features

■ Output voltage adjustable from 6 V to 12 V

■ Output voltage accuracy: ± 2%

■ Output current up to 1 A

■ Low ripple voltage: 5 mV (typ.)

■ Synchronous rectification

■ High 90% efficiency: VO = 9 V (typ.)

■ Few external components

■ Thermal shutdown protection

■ Very small DFN8 (4 x 4 mm) package

Description

The ST8R00 is a synchronous PWM step-up DC-

DC converter. The device is able to provide an

output voltage in the range of 6 to 12 V with an

input voltage from 4 to 6 V. The high switching

frequency (1.7 MHz) permits the use of tiny

surface-mount components. In addition to the

resistor divider to set the output voltage value,

only an inductor and two capacitors are required.

Moreover, a low output ripple is guaranteed by the

current mode PWM topology and by the use of

low ESR SMD ceramic capacitors. The device is

available in a very small DFN8 (4 x 4 mm)

package.

DFN8 4 x 4 mm

Table 1.

Device summary

Part number

Order code

Output voltage

ST8R00

ST8R00WPUR

ADJ

www.st.com

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