STMicroelectronics ST1S10
The ST1S10 is a high efficiency step-down PWM current mode switching regulator capable of providing up to 3 A of output current. The device 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 0.85 * VIN_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).| Part No. | ST1S10 |
|---|---|
| Datasheet | ST1S10 Download |
| Manufacturer |  STMicroelectronics |
| Description | monolithic synchronous step-down regulator |
| Buy | Stock & Price |
FEATURES
● Step-down current mode PWM regulator● Output voltage adjustable from 0.8 V
● Input voltage from 2.5 V up to 18 V
● 2% DC output voltage tolerance
● Synchronous rectification
● Inhibit function
● Synchronizable switching frequency from 400 kHz up to 1.2 MHz
● Internal soft start
● Dynamic short-circuit protection
● Typical efficiency: 90%
● 3 A output current capability
● Standby supply current: max. 6 µA over temperature range
● Operative junction temp.: from -40 °C to 125 °C
APPLICATIONS
● Consumer – STB, DVD, DVD recorders, TV, VCR, car audio, LCD monitors● Networking – XDSL, modems, DC-DC modules
● Computer – Optical storage, HD drivers, printers, audio/graphic cards
● Industrial and security – Battery chargers, DC-DC converters, PLD, PLA, FPGA, LED drivers Datasheet - production data
DESCRIPTION
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 ST1S10 provides excellent transient response, and is fully protected against thermal overheating, switching overcurrent and output short-circuit.
