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AP2002SA Datasheet(PDF) 1 Page - Anachip Corp |
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AP2002SA Datasheet(HTML) 1 Page - Anachip Corp |
1 / 7 page AP2002 Synchronous PWM Controller This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. Rev. 0.2 Apr 14, 2004 1/7 Features - Single or Dual Supply Application - 0.8V + 1.0% Voltage Reference. - Fast transient response. - Synchronous operation for high efficiency (95%) - On-chip power good, OVP protect. - Small size with minimum external components - Soft Start and enable functions - Industrial temperature range - Under Voltage Lockout function - SOP-14L package Applications - Microprocessor core supply - Low cost synchronous applications - Voltage Regulator Modules (VRM) - DDR termination supplies - Networking power supplies - Sequenced power supplies General Description The AP2002 is a low-cost, full featured, and synchronous voltage-mode controller designed for use in single ended power supply applications where efficiency is of primary concern. This synchronous operation allows the elimination of heat sinks in many applications. The AP2002 is ideal for implementing DC/DC converters that is needed for the power advanced microprocessors in low cost systems, or in distributed power applications where efficiency is important. Internal level-shift, high-side drive circuitry, and preset shoot-thru control, allows the use of inexpensive N-channel power switches. AP2002 features include temperature compensated voltage reference, an internal 200Khz virtual frequency oscillator, under voltage lockout protection, soft-start function and current sense comparator circuitry. Power good signaling, shutdown, and over voltage protection are also provided by AP2002. Pin Assignment SOP-14L 1 (Top View) VCC PWRGD OVP OCSET PHASE DRVH PGND DRVL BSTL BSTH SENSE COMP GND SS/SHDN AP2002 2 3 4 5 6 7 8 9 10 11 12 13 14 Ordering Information AP2002 X X X Package Packing S: SOP-14L Blank : Tube A : Taping Lead Free Blank : Normal L : Lead Free Package Pin Descriptions Name Description VCC Chip supply voltage PWRGD Logic high indicates correct output voltage (open drain output) OVP Over voltage protection OCSET Sets the converter over-current trip point PHASE Input from the phase node between the MOSFETs DRVH High side driver output PGND Power ground DRVL Low side driver output BSTL Bootstrap, low side driver BSTH Bootstrap, high side driver SENSE Voltage sense input COMP Compensation pin SS/ SHDN Soft start, a capacitor to ground sets the slow start time GND Signal ground |
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