Cherry Semiconductor CS52015-3GT3, CS52015-3GSTR3, CS52015-3GST3, CS52015-3GDPR3, CS52015-3GDP3 Datasheet
1
Features
■ Output Current to 1.5A
■ Output Accuracy to ±1.5%
Over Temperature
■ Dropout Voltage (typical)
1.05V @ 1.5A
■ Fast Transient Response
■ Fault Protection
Current Limit
Thermal Shutdown
Package Options
3L TO-220
Tab (V
OUT
)
CS52015-3
1.5A, 3.3V Fixed Linear Regulator
1
CS52015-3
The CS52015-3 linear regulator provides 1.5A at 3.3V with an output
voltage accuracy of ±1.5%.
The regulator is intended for use as
a 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 less than
1.4V at 1.5A output current. The
maximum quiescent current is only
10mA at full load. Device protection includes overcurrent and thermal shutdown.
The CS52015-3 is pin compatible
with the LT1086 family of linear
regulators but has lower dropout
voltage.
The regulator is available in TO220, surface mount D2, and SOT-223
packages.
Application Diagram
Consult factory for other fixed output voltage
options.
CS52015 -3
1 Gnd
2V
OUT (tab)
3V
IN
Description
3L D2PAK
Tab (V
OUT
)
1
A Company
¨
3L SOT-223
Tab (V
OUT
)
1
Rev. 2/17/98
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
V
IN
CS52015-3
V
OUT
3.3V
@ 1.5A
Gnd
22mF
10 mF
5V
5V
2
CS52015-3
Absolute Maximum Ratings
Supply Voltage, V
IN
.....................................................................................................................................................................7V
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
ESD Damage Threshold............................................................................................................................................................2kV
PACKAGE PIN # PIN SYMBOL FUNCTION
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Electrical Characteristics: C
IN
= 10µF, C
OUT
= 22µF Tantalum, V
OUT
+ V
DROPOUT
< VIN< 7V, 0¡C ² TA ² 70¡C, TJ² +150¡C,
unless otherwise specified, I
full load
= 1.5A.
Package Pin Description
■ Fixed Output Voltage
Output Voltage V
INÐVOUT
=1.5V 3.250 3.300 3.350 V
(Notes 1 and 2) 0²I
OUT
²1.5A (-1.5%) (+1.5%)
Line Regulation 2V²VINÐV
OUT
²3.7V; I
OUT
=10mA 0.02 0.20 %
Load Regulation VINÐV
OUT
=2V; 10mA ²I
OUT
²1.5A 0.04 0.4 %
(Notes 1 and 2)
Dropout Voltage (Note 3) I
OUT
=1.5A 1.05 1.4 V
Current Limit VINÐV
OUT
=3V 1.6 3.1 A
Quiescent Current I
OUT
=10mA 5.0 10.0 mA
Thermal Regulation (Note 4) 30ms pulse; TA=25¡C 0.002 0.020 %/W
Ripple Rejection f=120Hz; I
OUT
=1.5A; VINÐV
OUT
=3V; 80 dB
(Note 4) V
RIPPLE
=1V
P-P
Thermal Shutdown (Note 5) 150 180 210 ¡C
Thermal Shutdown Hysteresis 25 ¡C
(Note 5)
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 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.
Note 4: Guaranteed by design, not tested in production.
Note 5: Thermal shutdown is 100% functionally tested in production.
D2PAK TO-220 SOT-223
1 1 1 Gnd Ground connection
222V
OUT
Regulated output voltage (case).
333VINInput voltage
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