ST1S09

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产品概述

描述

The ST1S09 is a step-down DC-DC converter optimized for powering low output voltage applications. It supplies a current in excess of 2 A over an input voltage range from 2.7 V to 6 V.

A high PWM switching frequency (1.5 MHz) allows the use of tiny surface-mount components.

Moreover, since the required synchronous rectifier is integrated, the number of the external components is reduced to minimum: a resistor divider, an inductor and two capacitors. The Power Good function continuously monitors the output voltage. An open drain Power Good flag is released when the output voltage is within regulation. In addition, 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 thermally protected and the output current limited to prevent damages due to accidental short circuit. The ST1S09 is available in the DFN6 (3 x 3 mm) package.

所有功能
Operating junction temp. -30 °C to 125 °C

Utilizes tiny capacitors and inductors

Available in DFN6 (3 x 3 mm) exposed pad

Non switching quiescent current: (typ) 1.5 mA over temperature range

Integrated output over-voltage protection

1.5 MHz fixed frequency PWM with current control mode
Typical efficiency: > 90%

2 A output current capability

Two versions available: power good or inhibit

R_DSON (typ) 100 mΩ

2 % DC output voltage tolerance
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eDesignSuite

eDesignSuite is a comprehensive set of easy-to-use design-aid utilities ready to help you streamline the system development process with a wide range of ST products.

Power Supply Design Tool

SMPS design, by topology, by type and by product

PFC design with analog and digitial control

Supports various PCB configurations

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	产品型号	状态	描述	类型	供应商
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