Semtech Corporation SC1150
The SC1150 voltage mode controller contains most of the circuitry necessary to implement a DC/DC converter ® for powering the Intel Pentium Pro microprocessor, both in single and multiple processor configurations. The SC1150 features an integrated D/A converter, pulse by pulse current limiting, integrated power good signaling, logic compatible shutdown and on-board over voltage protection (OVP). The SC1150 operates at a fixed frequency of 200kHz, providing an optimum compromise between size, efficiency and cost in the intended application areas.| Part No. | SC1150 |
|---|---|
| Datasheet | SC1150 Download |
| Manufacturer |  Semtech Corporation |
| Description | PROGRAMMABLE DC/DC CONTROLLER |
| Buy | Stock & Price |
DESCRIPTION
The integrated D/A converter provides programmability of output voltage from 2.0V to 3.5V in 100mV increments with no external components. Both the range and the increment value may be changed by adding external components. The SC1150 provides an OVP output which can be used to trigger a crowbar circuit for true over voltage protection.FEATURES
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● 85% efficiency 4 bit DAC for output programmability On chip power good and OVP functions ® Meets Intel Pentium Pro VRM8.0 specifications
APPLICATIONS
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● Pentium Pro Processor supplies ® Pentium Pro Processor VRM modules 2.0V to 3.5V microprocessor supplies Programmable power supplies ® ORDERING INFORMATION DEVICE (1) PACKAGE SO-16 TEMP RANGE (TJ) 0 - 125°C SC1150CS Note: (1) Add suffix ‘TR’ for tape and reel. BLOCK DIAGRAM VCC CSm CSp SHUTDOWN 1.25V REF VCC 70mV CURRENT LIMIT BST +
ABSOLUTE MAXIMUM RATINGS
Parameter VCC to GND PGND to GND BST to GND + + Symbol VIN Maximum -0.3 to 7 ±1 -0.3 to 15 Units V V V °C °C °C VID...
