ABSOLUTE MAXIMUM RATINGS
Power dissipation
Internally limited
Input-Output Voltage Differential
38V
Operating Junction Temperature Range
-20
to +85
Storage Temperature
55
to +150
Lead Temperature(Soldering, 4seconds)
260
Output is Short Circuit Protected
ESD rating to be determined
ELECTRICAL CHARACTERRISTISTICS
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
Line Regulation
3V
(V
IN
-V
OUT
)
40V,I
L
20mA 0.02 0.0
7 %/V
Load Regulation
5mA
I
OUT
100mA 0.3 1.
5 %
Reference Voltage
5mA
I
OUT
100mA
P
625mW
3V
(V
IN
-V
OUT
)
40V
1.2
0 1.25 1.30 V
Adjustment Pin Current
50
100
A
Adjustment Pin Current Change
5mA
IL
100mA,
3V
(VIN-VOUT)
40V
P
625mW
0.2
5
A
3.5
5
Minimum Load Current
(V
IN
-V
OUT
)
40V
3V
(V
IN
-V
OUT
)
15V 1.5
mA
90 200
300
Current Limit
3V
(V
IN
-V
OUT
)
13V
(V
IN
-V
OUT
)=40V 25 50
120
mA
RMS Output Noise % of V
OUT
T
J
=25,10
HZ
F
10KH
Z
0.03
%
65
Ripple Rejection Ratio V
OUT
=10V,F=120H
Z
,C
ADJ
=10F 58
80
dB
Note1
: Unless otherwise noted, these specifications apply: 0
T
J
70
for the WS317L;V
IN
-V
OUT
=5V and I
OUT
= 40mA.
Although power dissipation is internally limited, these specifications are applicable for power dissipation up to
625mW. I
MAX
is 100mA
Note2
:
Regulation is measure at constant junction temperature, using pulse testing with a low duty cycle. Changes in
output voltage due to heating effects are covered under the specification for thermal regulation.
Note3
:
Thermal resistance of the TO-92 package is 180
/W junction to ambient with 0.4" leads from a PC board and 160
/W junction to ambient with 0.125" length to a PC board
Wing Shing Computer Components Co., (H.K.)Ltd.
Tel:(852)2341 9276 Fax:(852)2797 8153
Homepage:
http://www.wingshing.com
E-mail: wsccltd@hkstar.com
WS317L
THREE-TERMINAL
POSITIVE VOLTAGE REGULATOR IC
ADJ
OUTPUT
INPUT
I
O
A
TO-92 WS317LZ
2.5
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