Absolute Maximum Ratings
Supply Voltage, VIN.....................................................................................................................................................................7V
Operating Temperature Range................................................................................................................................-40¡C to 70¡C
Junction Temperature ............................................................................................................................................................150¡C
Storage Temperature Range ..................................................................................................................................-60¡C to 150¡C
ESD Damage Threshold............................................................................................................................................................2kV
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, VOUT + VDROPOUT < VIN < 7V, 0¡C ² TA ² 70¡C, TJ ² +150¡C,
unless otherwise specified, Ifull load = 3A.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
■ Adjustable Output Voltage (CS5203-1)
Reference Voltage
(Notes 1 and 2)
VINÐVOUT=1.5V; VAdj = 0V
10mA²IOUT²3A
1.235
(-1.5%)
1.254
1.273
(+1.5%)
V
Line Regulation
2V²VINÐVOUT²5.75V; IOUT=10mA
VINÐVOUT=2V; 10mA²IOUT²3A
0.02
0.04
0.20
0.4
%
%
Load Regulation
(Notes 1 and 2)
Dropout Voltage (Note 3)
Current Limit
IOUT=3A
1.15
4.6
1.40
V
VINÐVOUT=3V; TJ ³ 25¡C
3.1
A
Minimum Load Current (Note 4) VIN=7V; Vadj=0
0.6
2.0
mA
µA
%/W
dB
Adjust Pin Current
VINÐVOUT=3V; IOUT=10mA
50
100
Thermal Regulation (Note 5)
Ripple Rejection (Note 5)
30ms pulse; TA=25¡C
0.002
80
0.020
f=120Hz; IOUT=3A; VINÐVOUT=3V;
VRIPPLE=1VPP
Thermal Shutdown (Note 6)
150
180
210
25
¡C
¡C
Thermal Shutdown Hysteresis (Note 6)
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: Minimum load current is defined as the minimum output current required to maintain regulation. The reference resistor in the output
divider is usually sized to fulfill the minimum load current requirement.
Note5: Guaranteed by design, not 100% functionally tested in production.
Note 6: Guaranteed by design, not 100% parametrically tested in production. However, every part is subject to functional testing for thermal
shutdown.
Package Pin Description
PACKAGE PIN #
D2PAK
PIN SYMBOL
FUNCTION
TO-220
1
2
3
1
2
3
Adj
VOUT
VIN
Adjust pin (low side of the internal reference).
Regulated output voltage (case)
Input voltage.
2
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
