Cherry Semiconductor CS5207-3GT3, CS5207-1GT3 Datasheet
1
Features
■ Output Current to 7A
■ Output Trimmed to ±1.5%
■ Dropout Voltage
1.4V @ 7A
■ Fast Transient Response
■ Fault Protection Circuitry
Thermal Shutdown
Overcurrent Protection
Safe Area Protection
■ 3.3V Fixed Version
Available
Package Options
3L TO-220
Tab (V
OUT
)
CS5207-1
7A Adjustable Linear Regulator
1
CS5207-1
The CS5207-1 linear regulator provides 7A at adjustable voltages
with an accuracy of ±1.5%. Two
external resistors are used to set the
output voltage within a 1.25V to
13V range.
The regulator is intended for use as
post regulator and microprocessor
supply. The fast loop response and
low dropout voltage make this regulator ideal for applications where
low voltage operation and good
transient response are important.
The circuit is designed to operate
with dropout voltages as low as 1V
depending on the output current
level. The maximum quiescent current 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 regulator is available in a
TO-220 package. A 3.3V, fixed version is also available. Please consult
factory for more information.
Block Diagram
1 Adj
2V
OUT
3V
IN
Description
A 3.3V fixed version is also available.
*Consult factory.
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
A Company
¨
Rev. 7/8/97
V
IN
V
OUT
Thermal
Shutdown
Bandgap
-
+
Amplifier
Error
Output
Current
Limit
Adj
2
CS5207 -1
Absolute Maximum Ratings
Supply Voltage, V
CC
..................................................................................................................................................................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
Electrical Characteristics: C
IN
= 10µF, C
OUT
= 22µF Tantalum, V
IN
Ð V
OUT
=3V, VIN² 15V, 0¡C ² TA ² 70¡C, TJ² +150¡C,
unless otherwise specified, I
full load
= 7A.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Package Pin Description
PACKAGE PIN # PIN SYMBOL FUNCTION
■ Adjustable Output Voltage
Reference Voltage VINÐV
OUT
=1.6V; V
Adj
= 0V 1.235 1.254 1.272 V
(Notes 1 and 2) 10mA²I
OUT
²7A (-1.5%) (+1.5%)
Line Regulation 1.6V²VINÐV
OUT
²6V; I
OUT
=10mA 0.04 0.20 %
Load Regulation VINÐV
OUT
=1.6V; 0.13 0.5 %
(Notes 1 and 2) 10mA²I
OUT
²7A
Dropout Voltage (Note 3) I
OUT
=7A 1.4 1.55 V
Current Limit VINÐV
OUT
=3V; TJ³ 25¡C 7.1 8.5 A
VINÐV
OUT
=9V 1.0 A
Minimum Load Current VINÐV
OUT
=7V 1.2 6 mA
Adjust Pin Current 50 100 µA
Adjust Pin Current Change 1.6V²VINÐV
OUT
²4V; 0.2 5.0 µA
10mA²I
OUT
²7A
Thermal Regulation 30ms pulse; TA=25¡C 0.003 %W
Ripple Rejection f=120Hz; C
Adj
=25µF; I
OUT
=7A 80 dB
Temperature Stability 0.5 %
RMS Output Noise 10Hz²f²10kHz; TA=25¡C 0.003 %V
OUT
Thermal Shutdown 150 180 ¡C
Thermal Shutdown Hysteresis 25 ¡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.
3L TO-220
1 Adj Adjust pin (low side of the internal reference).
2V
OUT
Regulated output voltage (case).
3V
IN
Input voltage.
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