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CS51031YD8 Fiches technique(PDF) 1 Page - ON Semiconductor |
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CS51031YD8 Fiches technique(HTML) 1 Page - ON Semiconductor |
1 / 12 page © Semiconductor Components Industries, LLC, 2002 December, 2001 – Rev. 9 1 Publication Order Number: CS51031/D CS51031 Fast PFET Buck Controller The CS51031 is a switching controller for use in DC–DC converters. It can be used in the buck topology with a minimum number of external components. The CS51031 consists of a VCC monitor for controlling the state of the device, 1.0 A power driver for controlling the gate of a discrete P–channel transistor, fixed frequency oscillator, short circuit protection timer, programmable soft start, precision reference, fast output voltage monitoring comparator, and output stage driver logic with latch. The high frequency oscillator allows the use of small inductors and output capacitors, minimizing PC board area and systems cost. The programmable soft start reduces current surges at start up. The short circuit protection timer significantly reduces the duty cycle to approximately 1/30 of its cycle during short circuit conditions. The CS51031 is available in an 8 Lead SO plastic package. Features • 1.0 A Totem Pole Output Driver • High Speed Oscillator (700 kHz max) • No Stability Compensation Required • Lossless Short Circuit Protection • V CC Monitor • 2.0% Precision Reference • Programmable Soft Start • Wide Ambient Temperature Range: – Industrial Grade: –40 °C to 85°C – Commercial Grade: 0 °C to 70°C VGATE PGND COSC GND VC CS VCC VFB RVCC 100 Ω CVCC 0.1 µF CS 0.1 µF COSC 470 pF VGATE RA 1.5 k Ω RB 2.5 k Ω CRR 0.1 µF CO 100 µF × 2 VO 3.3 V @ 3 A L 4.7 µH MBRS360 D1 5.0 V–12 V CIN 47 µF MP1 IRF7416 Figure 1. Typical Application Diagram 95 Units/Rail PIN CONNECTIONS A = Assembly Location WL, L = Wafer Lot YY, Y = Year WW, W = Work Week SO–8 D SUFFIX CASE 751 1 8 1 51031 ALYW 8 MARKING DIAGRAM VFB GND VCC COSC CS PGND VC VGATE 1 Device Package Shipping ORDERING INFORMATION* CS51031YD8 SO–8 95 Units/Rail CS51031YDR8 2500 Tape & Reel CS51031GD8 CS51031GDR8 2500 Tape & Reel SO–8 SO–8 SO–8 *Additional ordering information can be found on page 9 of this data sheet. http://onsemi.com |
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