ST1S10PHR

monolithic synchronous step-down regulator, 20 V, 1 mA, 1.2 MHz, SOIC-8

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Price:: US $0.45~0.55 / piece [Get Latest Price]

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PartNumber:: ST1S10PHR

Brand:: STMicroelectronics - ST | Pack: SO | D/C: 08+

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Products Upload time: 2012-07-20

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Part Number:ST1S10PHR
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Product Summary

The ST1S10PHR is a monolithic synchronous step-down regulator. The ST1S10PHR operates with an input supply range from 2.5 V to 18 V and provides an adjustable output voltage from 0.8 V (VFB) to 0.85VIN_SW [VOUT = VFB(1+R1/R2)]. It operates either at a 900 kHz fixed frequency or can be synchronized to an external clock (from 400 kHz to 1.2 MHz). The high switching frequency allows the use of tiny SMD external components, while the integrated synchronous rectifier eliminates the need for a Schottky diode. The ST1S10PHR provides excellent transient response, and is fully protected against thermal overheating, switching over-current and output short circuit. The ST1S10PHR is the ideal choice for point-of-load regulators or LDO pre-regulation.

Parametrics

ST1S10PHR absolute maximum ratings: (1)VIN_SW Positive power supply voltage: -0.3 to 20 V; (2)VIN_A Positive supply voltage: -0.3 to 20 V; (3)VINH Inhibit voltage: -0.3 to VIN_A V; (4)VSW Output switch voltage: -0.3 to 20 V; (5)VFB Feedback voltage: -0.3 to 2.5 V; (6)IFB FB current: -1 to +1 mA; (7)Sync Synchronization: -0.3 to 6 V; (8)TSTG Storage temperature range: -40 to 150 ℃; (9)TOP Operating junction temperature range: -25 to 125 ℃.

Features

ST1S10PHR features: (1)Step-down current mode PWM regulator; (2)Output voltage adjustable from 0.8 V; (3)Input voltage from 2.5 V up to 18 V; (4)2% DC output voltage tolerance; (5)Synchronous rectification; (6)Inhibit function; (7)Synchronizable switching frequency from 400 kHz up to 1.2 MHz; (8)Internal soft start; (9)Dynamic short circuit protection; (10)Typical efficiency: 90%; (11)3 A output current capability; (12)Stand-by supply current: max 6 μA over temperature range; (13)Operative junction temp: from -25℃ to 125℃.