Semtech Corporation SC1151
The SC1151 voltage mode controller contains most of the circuitry necessary to implement a DC/DC converter for powering advanced microprocessors such as Klamath, both in single and multiple processor configurations. The SC1151 features an integrated 5 bit D/A converter, pulse by pulse current limiting, integrated power good signaling, logic compatible shutdown and on-board over voltage protection (OVP). The SC1151 operates at a fixed frequency of 200kHz, providing an optimum compromise between size, efficiency and cost in the intended application areas.| Part No. | SC1151 |
|---|---|
| Datasheet | SC1151 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 and 1.80V to 2.05V in 50mV increments with no external components. The SC1151 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 5 bit DAC for output programmability On chip power good and OVP functions Designed for Intel Klamath VRM8.1 requirements
APPLICATIONS
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● Klamath microprocessor supplies Klamath VRM modules 1.8V to 3.5V microprocessor supplies Programmable power supplies ORDERING INFORMATION DEVICE (1) PACKAGE SO-16 TEMP RANGE (TJ) 0° to 125°C SC1151CS Note: (1) Add suffix ‘TR’ for tape and reel. BLOCK DIAGRAM VCC CSm CSp SHUTDOWN
ABSOLUTE MAXIMUM RATINGS
Parameter Symbol VIN Maximum -0.3 to 7 ±1 -0.3 to 15 TA TSTG TLEAD 0 to 70 -65 to +150 300 Units V V V °C °C °C 1.25V REF VCC 70mV CURRENT LIMIT BST + VCC to GND PGND to GND BST to GND VID4 VID3 VID2 VID1 VID0 D/A AND...
