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Cherry Semiconductor Corporation

CS5205A-1 Datasheet Preview

CS5205A-1 Datasheet

5A Adjustable Linear Regulator

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CS5205A-1
5A Adjustable Linear Regulator
Description
The CS5205A-1 linear regulator
provides 5A at an adjustable volt-
age with an accuracy of ±1%. Two
external resistors are used to set the
output voltage within a 1.25V to
13V range.
The regulator is intended for use as
a post regulator and microproces-
sor supply. The fast loop response
and low dropout voltage make this
regulator ideal for applications
where low voltage operation and
good transient response are impor-
tant.
The circuit is designed to operate
with dropout voltages as low as 1V
depending on the output current
level. The maximum quiescent cur-
rent is only 10mA at full load.
The regulator is fully protected
against overload conditions with
protection circuitry for Safe
Operating Area (SOA), overcurrent
and thermal shutdown.
The CS5205A-1 is pin compatible
with the LT1084 family of linear
regulators but has lower dropout
voltage.
The regulator is available in TO-220
and surface mount D2 packages.
Features
s Output Current to 5A
s Output Trimmed to +/- 1%
s Dropout Voltage
1.15V @ 5A
s Fast Transient Response
s Fault Protection Circuitry
Thermal Shutdown
Overcurrent Protection
Safe Area Protection
Block Diagram
Package Options
3L TO-220
Tab (VOUT)
3L D2PAK
VOUT
VIN 1
Thermal
Shutdown
Bandgap
Output
Current
Limit
- + Error
Amplifier
Adj
1 Adj
2 VOUT
3 VIN
1
Rev. 7/8/97
Cherry Semiconductor Corporation
2000 South County Trail, East Greenwich, RI 02818
Tel: (401)885-3600 Fax: (401)885-5786
Email: info@cherry-semi.com
Web Site: www.cherry-semi.com
1 A ¨ Company




Cherry Semiconductor Corporation

CS5205A-1 Datasheet Preview

CS5205A-1 Datasheet

5A Adjustable Linear Regulator

No Preview Available !

Absolute Maximum Ratings
Supply Voltage, VCC.....................................................................................................................................................................17V
Operating Temperature Range ..................................................................................................................................-40¡C to 70¡C
Junction Temperature ...............................................................................................................................................................150¡C
Storage Temperature Range .....................................................................................................................................-60¡C to 150¡C
Lead Temperature Soldering
Wave Solder (through hole styles only) ........................................................................................10 sec. max, 260¡C peak
Reflow (SMD styles only) .........................................................................................60 sec. max above 183¡C, 230¡C peak
Electrical Characteristics: CIN = 10µF, COUT = 22µF Tantalum, VIN Ð VOUT=3V, VIN ² 15V, 0¡C ² TA ² 70¡C, TJ ² +150¡C,
unless otherwise specified, Ifull load = 5A.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
s Adjustable Output Voltage
Reference Voltage
(Notes 1 and 2)
Line Regulation
Load Regulation
(Notes 1 and 2)
Dropout Voltage (Note 3)
Current Limit
Minimum Load Current
Adjust Pin Current
Adjust Pin Current Change
Thermal Regulation
Ripple Rejection
Temperature Stability
RMS Output Noise
Thermal Shutdown
Thermal Shutdown Hysteresis
VINÐVOUT=1.5V; VAdj = 0V
10mA²IOUT²5A
1.5V²VINÐVOUT²6V; IOUT=10mA
VINÐVOUT=1.5V;
10mA²IOUT²5A
IOUT=5A; TJ ³ 25¡C
VINÐVOUT=3V; TJ ³ 25¡C
VINÐVOUT=9V
VINÐVOUT=7V
1.5V²VINÐVOUT²4V;
10mA²IOUT²5A
30ms pulse; TA=25¡C
f=120Hz; CAdj=25µF; IOUT=5A
10Hz²f²10kHz; TA=25¡C
1.241
(-1%)
5.5
150
1.254
0.04
0.08
1.15
8.5
1.0
1.2
50
0.2
0.003
82
0.5
0.003
180
25
1.266
(+1%)
0.20
0.4
1.25
6
100
5.0
V
%
%
V
A
A
mA
µA
µA
%W
dB
%
%VOUT
¡C
¡C
Note 1: Load regulation and output voltage are measured at a constant junction temperature by low duty cycle pulse testing. Changes in out-
put voltage due to thermal gradients or temperature changes must be taken into account separately.
Note 2: Specifications apply for an external Kelvin sense connection at a point on the output pin 1/4Ó from the bottom of the package.
Note 3: Dropout voltage is a measurement of the minimum input/output differential at full load.
PACKAGE PIN #
D2PAK
1
2
3
3L TO-220
1
2
3
Package Pin Description
PIN SYMBOL
FUNCTION
Adj
VOUT
VIN
Adjust pin (low side of the internal reference).
Regulated output voltage (case).
Input voltage.
2


Part Number CS5205A-1
Description 5A Adjustable Linear Regulator
Maker Cherry Semiconductor Corporation
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CS5205A-1 Datasheet PDF






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