SN317D2 Datasheet PDF - AUK

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SN317D2
AUK

Part Number SN317D2
Description Positive Voltage Regulator
Page 9 Pages


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Semiconductor
http:// www.auk.co.kr
TO-220F-3L
TO-252-3L
D2PAK
SN317x
[ 1.5 A Adjustable Output ] Positive Voltage Regulator
Description
The SN317 is an adjustable 3-terminal positive voltage regulator
capable of supplying in excess of 1.5 A over an output voltage range of 1.2
V to 37 V. This voltage regulator is exceptionally easy to use and requires
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.
This device can also be used to make a programmable output regulator, or
by connecting a fixed resistor between the adjustment and output, the
SN317 can be used as a precision current regulator.
Application
Consumer and personal electronics
SMPS post-regulator / dc-to-dc modules
High-efficiency linear power supplies
LED Light Constant Current Controllers
ORDERING INFORMATION
Product
Marking
Package
SN317PI
SN317 TO-220F-3L
SN317D
SN317
TO252-3L
SN317D2
SN317
D2PAK
Marking Detail Information
AUK()
GYMD ()
SN317 ()
AUK Logo
Grade & M Code & Y/M/D Code
Device Code [ TO220F-3L / D2PAK ]
SN317 ()
YWW ()
Features and Benefits
Output Current up to 1.5A
Output Adjustable Level : 1.2V to 37V
Built in OVP, CLP circuit.
Built in TSD Protection.
Output Transistor Safe Area Protection.
Ultra High level of ESD [ Built in ESD Protection Cell ]
Equivalent Circuit
VIN(3)
Voltage
Reference
+
OVP / OCP / ESD
Protection Circuitry
R Limit
Device Code [ TO252-3L ]
Year & Week Code
Adj(1)
VOUT(2)
August, 2011 REV. 03
KSD-I0O009-003
1



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Pin Configuration
4
1
2
3
D2PAK
1: Adj.
2: VOUT
3: VIN
4: VOUT
Standard Application
SN317x
4
12
3
TO-252-3L
1: Adj.
2: VOUT
3: VIN
4: VOUT
1
23
TO-220AB-3L
1: Adj.
2: VOUT
3: VIN
Ci is required if regulator is located an appreciable distance from power supply filter.
Co is not needed for stability, however, it is necessary to improve transient response.
Since IAdj is controlled to less than 0.1mA, the error associated with this term is insignificant
in most applications.
VOUT = Vref(1.25V) ×( 1+R2/R1)+IadjR2
August, 2011 REV. 03
KSD-I0O009-003
2



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SN317x
Absolute Maximum Ratings ( Ta = 25)
Parameter
Symbol
TO-220F-3L
Limits
TO-252-3L
D2PAK
Input-Output Voltage Differential
Power Dissipation
D2PAK
TO-252-3L
TO-220F-3L
VI-VO
Pd
40
Internally Limited
Thermal Resistance Junction to Case
RΘJC
5.0
5.0
5.0
Unit
V
W
°C/W
Thermal Resistance Junction to Air
RΘJA
65
92
72 °C/W
Junction Temperature
TJ
150
Operating Junction Temperature Range
Topr
0 ~ +125
Storage Temperature Range
Tstg
-55 ~ +150
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only.
Functional operation above the recommended operating conditions is not implied. Extended exposure to
Stresses above the Recommended Operating Conditions may affect device reliability.
The maximum allowable power dissipation is a function of the maximum junction temperature, TJ(max) ,
the junction-to-ambient thermal resistance, θJA, and the ambient temperature, TA.
The maximum allowable power dissipation at any ambient temperature is calculated using:
PD(max) = (TJ(max) – TA) ÷ θJA. Exceeding the maximum allowable power dissipation will result in
excessive die temperature, and the regulator will go into thermal shutdown.
August, 2011 REV. 03
KSD-I0O009-003
3



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SN317x
Electrical characteristics
( VI-VO=5V, IO = 0.5A, IMAX = 1.5A, TJ=0~125, PDMAX=20W ; unless otherwise specified )
Characteristic
Symbol
Test Condition*
SN317x
Min. Typ. Max.
Line Regulation *
Load Regulation *
ÌVO(Line)
ÌVO(Load)
3.0V VI-VO 40V
IO=10mA
3.0V VI-VO 40V
IO=10mA
10mA IO IMAX
TA=+25
10mA IO IMAX
TA=0~+125
TA=+25
TA=0~+125
VO < 5V
VO 5V
VO < 5V
VO 5V
- 0.01 0.04
- 0.02 0.07
-
18.0 25.0
0.4 0.5
-
40.0 70.0
0.8 1.5
Adjustable Pin Current
IADJ -
- 50 100
Unit
%/V
mV
% / VO
mV
% / VO
uA
Adjustable Pin Current Change
Reference Voltage
Temperature Stability
IADJ
VREF
STT
3.0V VI-VO 40V
10mA IO IMAX, PDPDMAX
3.0V VI-VO 40V
10mA IO IMAX , PD PDMAX
0Tj 125
- 2.0 5.0 uA
1.20 1.25 1.30
V
- 1.0 - % / VO
Ripple Rejection
VO =10V, f=120Hz without CADJ
RR
VO =10V, f=120Hz, CADJ = 10uF **
- 65.0 -
- 75.0 -
Output Noise Voltage
VNO 10Hz f 100kHz
TA =25
- 0.003 -
%
Minimum Load Current to
Maintain Regulation
IL(MIN)
VI-VO = 40V
- 3.5 12.0 mA
Maximum Output Current
IO(MAX)
VI-VO 15V, PD PDMAX
VI-VO 40V, PD PDMAX
TA =25
1.0 2.2
- 0.3
-
-
A
Long-Term Stability
ST
TA = +25for end point measurements,
1000HR
- 0.3 1.0 %
* Load and line regulation are specified at constant temperature. Change in VO due to heating effects
must be taken into account separately. Pulse testing with low duty cycle is used.
** CADJ is connected between the adjustable pin and ground.
August, 2011 REV. 03
KSD-I0O009-003
4



SN317D2 datasheet pdf
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SN317D2 pdf
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