CS51031GDR8G ON Semiconductor, CS51031GDR8G Datasheet

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CS51031GDR8G

Manufacturer Part Number
CS51031GDR8G
Description
IC CTRLR PFET BUCK FAST 8-SOIC
Manufacturer
ON Semiconductor
Type
Step-Down (Buck)r
Datasheet

Specifications of CS51031GDR8G

Internal Switch(s)
No
Synchronous Rectifier
No
Number Of Outputs
1
Current - Output
200mA
Frequency - Switching
200kHz
Voltage - Input
3 ~ 16 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Output Current
1 A
Switching Frequency
700 KHz
Operating Temperature Range
0 C to + 70 C
Mounting Style
SMD/SMT
Duty Cycle (max)
83.3 %
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Output
-
Power - Output
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
CS51031GDR8G
CS51031GDR8GOSTR

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
CS51031GDR8G
Manufacturer:
ONSemi
Quantity:
131 816
Part Number:
CS51031GDR8G
Manufacturer:
ON/安森美
Quantity:
20 000
5.0 V−12 V
CS51031
Fast P−Ch FET
Buck Controller
converters. It can be used in the buck topology with a minimum
number of external components. The CS51031 consists of a V
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.
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
© Semiconductor Components Industries, LLC, 2005
October, 2005 − Rev. 11
C
470 pF
The CS51031 is a switching controller for use in DC−DC
The high frequency oscillator allows the use of small inductors and
1.0 A Totem Pole Output Driver
High Speed Oscillator (700 kHz max)
No Stability Compensation Required
Lossless Short Circuit Protection
V
2.0% Precision Reference
Programmable Soft−Start
Wide Ambient Temperature Range:
Pb−Free Packages are Available
OSC
CC
Industrial Grade: −40°C to 85°C
Commercial Grade: 0°C to 70°C
V
GATE
Monitor
V
PGND
C
GND
GATE
OSC
Figure 1. Typical Application Diagram
C
47 mF
IN
V
V
CS
V
CC
FB
C
RV
100 W
CV
0.1 mF
CC
CC
1.5 kW
R
A
CS
0.1 mF
MBRS360
2.5 kW
D
0.1 mF
R
C
1
B
RR
MP
IRF7416
L
4.7 mH
C
100 mF × 2
V
3.3 V @ 3 A
O
O
1
1
CC
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
51031 = Device Code
A
L
Y
W
x
G
ORDERING INFORMATION
PGND
V
C
GND
GATE
MARKING DIAGRAM
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Continuation of Device Code
= Pb−Free Package
PIN CONNECTIONS
OSC
http://onsemi.com
x = Y or G
1
8
1
8
CASE 751
D SUFFIX
SOIC−8
ALYWx
51031
Publication Order Number:
1
G
V
V
V
CS
FB
C
CC
CS51031/D

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CS51031GDR8G Summary of contents

Page 1

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 monitor for ...

Page 2

... CS51031YD8 CS51031YD8G −40°C < T CS51031YDR8 CS51031YDR8G CS51031GD8 CS51031GD8G CS51031GDR8 CS51031GDR8G †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. MAXIMUM RATINGS Power Supply Voltage Driver Supply Voltage ...

Page 3

V ELECTRICAL CHARACTERISTICS Industrial Grade: −40°C < T < 85°C; −40°C < Characteristic Oscillator V FB Frequency C Charge Current 1.4 V < V Discharge Current 2.7 V > V Maximum Duty Cycle ...

Page 4

V REF OSC 1.5 V − 3.3 V REF 1.5 V − THEORY OF ...

Page 5

Startup The CS51031 has an externally programmable Soft−Start feature that allows the output voltage to come up slowly, preventing voltage overshoot on the output. At startup, the voltage on all pins is zero voltage along with the ...

Page 6

Buck Regulator Operation A block diagram of a typical buck regulator is shown in Figure assume that the output transistor is initially off, and the system is in discontinuous operation, the inductor current I is zero and ...

Page 7

Inductor Selection The inductor value is chosen for continuous mode operation down to 0.3 Amps. The ripple current × I min = 2 × 0 0.6 A. OUT ( V OUT ) V D ...

Page 8

The fault time is the sum of the slow discharge time the fast discharge time and the recharge time dominated by the slow discharge time. The first parameter is the slow discharge time the time for ...

Page 9

... SEATING PLANE −Z− 0.25 (0.010 *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. PACKAGE THERMAL DATA Parameter R qJC R qJA CS51031 PACKAGE DIMENSIONS SOIC−8 NB CASE 751−07 ISSUE AG ...

Page 10

... Fax: 480−829−7709 or 800−344−3867 Toll Free USA/Canada Email: orderlit@onsemi.com CS51031 N. American Technical Support: 800−282−9855 Toll Free USA/Canada Japan: ON Semiconductor, Japan Customer Focus Center 2−9−1 Kamimeguro, Meguro−ku, Tokyo, Japan 153−0051 Phone: 81−3−5773−3850 http://onsemi.com 10 ON Semiconductor Website: http://onsemi ...

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