ST1S30 3 A, 1.5 MHz PWM step-down switching regulator with synchronous rectification

The ST1S30 is a step-down DC-DC converter optimized for powering low output voltage applications. It supplies a current in excess of 3 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 ST1S30 is available in the DFN8 (4 x 4 mm) package

技术特性

1.5 MHz fixed frequency PWM with current control mode
3 A output current capability
Typical efficiency: > 90%
2 % DC output voltage tolerance
Two versions available: power good or inhibit
Integrated output over-voltage protection
Non switching quiescent current: (typ) 1.5 mA over temperature range
RDSon (typ) 100 mΩ
Utilizes tiny capacitors and inductors
Operating junction temp. -25 °C to 125 °C
Available in DFN8 (4 x 4 mm) exposed pad

功能框图

ST1S30 订购信息

订购型号	产品状态	美金价格	数量	封装	包装形式	温度范围	材料声明
ST1S30IPUR	Active		1000	VFDFPN 8 4x4x1.0	Tape And Reel		ST1S30IPUR

DATASHEET

描述	版本	大小
ST1S30 : 3 A, 1.5 MHz PWM step-down switching regulator with synchronous rectification	1	188KB