PJ317
3-Terminal Adjustable Output Positive Voltage Regulator
1-11
2002/10.rev.A
he PJ317 is adjustable 3-terminal positive voltage
regulator capable of supplying in excess of 1.5 A
over an output voltage range of 1.25 V to 37 V. This voltage
regulator is exceptionally easy to use and require only two
external resistors to set the output voltage. Further, it
employs internal current limiting, thermal shutdown and
safe area compensation, making it essentially blow-out
proof.
Output Current in Excess of 1.5 Ampere
Output Adjustable between 1.25 V and 37 V
Internal Thermal Overload Protection
Internal Short-Circuit Current Limiting
Constant with Temperature
Output Transistor Safe-Area Compensation
Floating Operation for High Voltage Applications
Standard 3-lead Transistor Packages
Eliminates Stocking Many Fixed Voltages
T
FEATURES
CIRCUIT SCHEMATIC
* = Cin is required if regulator is located an appreciable distance from power supply filter.
** = Co is not needed for stability, however it does improve transient response.
V
out
= 1.25 V (1 + R
2
/ R
1
) + I
Adj
R
2
Since I
Adj
is controlled to less than 100
A, the error associated with this term is negligible in most applications
STANDARD APPLICATION
Pin 1. Vin 5. Nc
2. Vout 6. Vout
3. Vout 7. Vout
4. Adjust 8. Nc
TO-220 / TO-263 / TO-
92/ TO-252 / SOT-223
Pin 1. Adjust
2. Vout
3. Vin
Heatsink surface
connected to Pin2
TO-220
TO-92 TO-252 SOT-223
SOP-8
ORDERING INFORMATION
Device
Operating
Temperature
Package Design
Load
Current
PJ317CZ TO-220
1.5A
PJ317CM TO-263
1.5A
PJ317CT TO-92
0.1A
PJ317CP TO-252
0.5A
PJ317CW SOT-223
1A
PJ317CS
-20 to 85
SOP-8 0.3A
TO-263
PJ317
3-Terminal Adjustable Output Positive Voltage Regulator
2-11
2002/10.rev.A
RATING SYMBOL
VALUE
UNIT
Input-Output Voltage Differential
V
I
- V
O
40 Vdc
Power Dissipation
P
D
Internally
Limited
Operating Junction Temperature Range
T
J
-20 to + 85
Storage Temperature Range
Tstg
-65 to +150
(V
I
-V
O
= 5.0 V; I
O
= 0.5A for TO-220 packages; T
J
=T
low
to T
high
[see Note 1]; I
max
and P
max
per Note 2; unless otherwise
specified.)
CHARACTERISTIC FIGURE
SYMBOL
MIN.
TYP.
MAX.
UNIT
Line Regulation (Note 3)
T
A
= 25
C
, 3.0 V
V
I
-V
O
40 V
1 REGline -- 0.01 0.04 %/V
Load Regulation (Note 3)
T
A
= 25
, 10 mA
I
O
I
max
, V
O
5.0
V
O
5.0
2 REGload
--
--
5.0
0.1
25
0.5
mV
%V
Thermal Regulation (T
A
= 25
)
20 ms Pulse
--
0.03
0.07
%W
Adjustment Pin Current
3
I
Adj
-- 50 100
A
Adjustment Pin Current Change , P
D
P
max
10mA
I
L
I
max
, 2.5V
V
I
- V
O
40V
1.2 I
Adj
-- 0.2 5.0
A
Reference Voltage (Note 4) , P
D
P
max
10mA
Io
I
max
,, 3.0 V
V
I
- V
O
40 V
3 V
ref
1.20 1.25 1.30 V
Line Regulation (Note 3) , 3.0 V
V
I
- V
O
40V
1
REGline
--
0.02
0.07
%V
Current Limit (V
IN
-V
OUT
)
15V
Package CZ,CM
Package CW
Package CP
Package CS
Package CT
1.5
1
0.5
0.3
0.1
A
Temperature Stability (T
low
T
J
T
high
) 3
T
S
-- 1 -- %
Minimum Load Current to
Maintain Regulation , (V
I
- V
O
= 40 V)
3 I
Lmin
-- 3.5 10 mA
RMS Noise, % of V
O
T
A
=25, 10 H
Z
f 10 KH
Z
-- N --
0.003
--
%
Long-Term Stability, T
J
= T
high
(Note 6)
T
A
=25 for Endpoint Measurements ,1000hrs
3 S --
0.3
1.0
%
Thermal Resistance Junction to Case
--
R
JC
-- 5.0 --
/W
NOTES:
(1) T
low
= -20 T
high
= + 85
(2) I
max
= 1.5 A P
max
: TO-220=20W, TO-263=3W, TO-252=2W, SOP-8=0.625W, TO-92=0.625W, SOT-
23=0.625W
(3) Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be
taken into account separately. Pulse testing with low duty cycle is used.
(4) Selected devices with tightened tolerance reference voltage available.
(5) C
Adj
, when used, is connected between the adjustment pin and ground.
(6) Since Long-Term Stability cannot be measured on each device before shipment, this specification is an engineering
estimate of average stability from lot to lot.
MAXIMUM RATINGS
PJ317 ELECTRICAL CHARACTERISTICS
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