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CS51033

ON Semiconductor
Part Number CS51033
Manufacturer ON Semiconductor
Description Fast P-Ch FET Buck Controller
Published Apr 7, 2007
Detailed Description www.DataSheet4U.com CS51033 Fast P−Ch FET Buck Controller The CS51033 is a switching controller for use in DC−DC conver...
Datasheet PDF File CS51033 PDF File

CS51033
CS51033

Overview
www.
DataSheet4U.
com CS51033 Fast P−Ch FET Buck Controller The CS51033 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 CS51033 consists of a 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 P−Ch FET duty cycle to approximately 1/30 of its normal 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 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 51033 A L Y W x G MARKING DIAGRAM 8 51033 ALYWx G 1 = = = = = = Device Code Assembly Location Wafer Lot Year Work Week Continuation of Device Code x = Y or G = Pb−Free Package PIN CONNECTIONS 1 VGATE PGND COSC GND VC CS VCC VFB ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 9 of this data sheet.
© Semiconductor Components Industries, LLC, 2005 1 October, 2005 − Rev.
10 Publication Order Number: CS51033/D CS51033 3.
3VIN CIN 100 mF RC 10 W D4 1N5818 D2 1N4148 D3 1N4148 C1 0.
1 mF VC V GATE RG 10 W IRF7404 U1 CS51033 VCC VFB 0.
1 mF 4.
7 mH 1.
5VOUT @ 3.
0 Amp 100 COSC C2 1.
0 mF C3 100 mF COSC 150 pF GND PGND CS 0.
1 mF CS 0.
1 mF D1 C0 100 mF C4 0.
1 mF 100 mF 1N58...


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