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CS51033 データシート(PDF) 1 Page - ON Semiconductor

部品番号 CS51033
部品情報  Fast PFET Buck Controller
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メーカー  ONSEMI [ON Semiconductor]
ホームページ  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

CS51033 データシート(HTML) 1 Page - ON Semiconductor

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© Semiconductor Components Industries, LLC, 2002
October, 2002 – Rev. 8
1
Publication Order Number:
CS51033/D
CS51033
Fast PFET 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 PFET duty cycle to
approximately 1/30 of its normal cycle during short circuit conditions.
The CS51033 is available in an 8–Lead SO package.
Features
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
95 Units/Rail
http://onsemi.com
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
51033
ALYW
8
MARKING
DIAGRAM
VFB
GND
VCC
COSC
CS
PGND
VC
VGATE
1
Device
Package
Shipping
ORDERING INFORMATION*
CS51033YD8
SO–8
95 Units/Rail
CS51033YDR8
2500 Tape & Reel
CS51033GD8
SO–8
SO–8
*Additional ordering information can be found on page
9 of this data sheet.
CS51033GDR8
2500 Tape & Reel
SO–8


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