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CS51031

ON Semiconductor
Part Number CS51031
Manufacturer ON Semiconductor
Description Fast P-Ch FET Buck Controller
Published Apr 7, 2007
Detailed Description www.DataSheet4U.com CS51031 Fast P−Ch FET Buck Controller The CS51031 is a switching controller for use in DC−DC conver...
Datasheet PDF File CS51031 PDF File

CS51031
CS51031

Overview
www.
DataSheet4U.
com CS51031 Fast P−Ch FET 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 startup.
The short circuit protection timer significantly reduces the duty cycle to approximately 1/30 of its cycle during short circuit conditions.
Features http://onsemi.
com 8 1 SOIC−8 D SUFFIX CASE 751 • • • • • • • • • 1.
0 A Totem Pole Output Driver High Speed Oscillator (700 kHz max) No Stability Compensation Required Lossless Short Circuit Protection VCC 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 Pb−Free Packages are Available MARKING DIAGRAM 8 51031 ALYWx G 1 5.
0 V−12 V CIN 47 mF MP1 IRF7416 51031 A L Y W x G = = = = = = Device Code Assembly Location Wafer Lot Year Work Week Continuation of Device Code x = Y or G = Pb−Free Package VGATE VGATE VC MBRS360 D1 PIN CONNECTIONS 1 CS51031 PGND CS RVCC 100 W VCC CVCC 0.
1 mF CS 0.
1 mF VGATE L 4.
7 mH VC CS VCC VFB PGND COSC GND COSC 470 pF COSC GND VFB RB 2.
5 kW VO 3.
3 V @ 3 A RA 1.
5 kW CRR 0.
1 mF ORDERING INFORMATION CO 100 mF × 2 See detailed ordering and shipping information in the package dimensions section on page 2 of this data sheet.
Figure 1.
Typical Application Diagram © Semiconductor Components Industries, LLC, 2005 1 October, 2005 − Rev.
11 P...


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