SN317L Datasheet PDF - AUK

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SN317L
AUK

Part Number SN317L
Description Positive Voltage Regulator
Page 8 Pages


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Semiconductor
http:// www.auk.co.kr
TO-92
SN317Lx
[100mA /Adjustable Output] Positive Voltage Regulator
Description
The SN317Lx is an adjustable 3-terminal positive voltage regulator
capable of supplying in excess of 100mA 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 SN317Lx can be used as a precision current regulator.
SOT-89
ORDERING INFORMATION
Product
SN317L
SN317LF
Marking
N317L
N317L
Package
TO-92
SOT-89
Application
Consumer and personal electronics
SMPS post-regulator / dc-to-dc modules
High-efficiency linear power supplies
LED Light Constant Current Controllers
Features and Benefits
Output Current up to 100mA
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
Marking Detail Information
N317L()
GYWW ()
Device Code
Grade & Year & Week Code
VIN(3)
Voltage
Reference
+
OVP / OCP / ESD
Protection Circuitry
R Limit
December, 2010 REV. 00
Adj(1)
KSD-I5B009-000
VOUT(2)
1



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Pin Configuration
SN317Lx
1
2
3
TO-92
1: Adj
2: VOUT
3: VIN
Standard Application
12 3
SOT-89
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
December, 2010 REV. 00
KSD-I5B009-000
2



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SN317Lx
Absolute Maximum Ratings ( Ta = 25)
Parameter
Symbol
Limits
Unit
Input-Output Voltage Differential
Power Dissipation
TO-92
SOT-89
Junction Temperature
VI-VO
Pd
TJ
40
Internally Limited
150
V
mW
Operate 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.
December, 2010 REV. 00
KSD-I5B009-000
3



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SN317Lx
Electrical characteristics
( VI-VO=5V, IO = 40mA, TJ=0~125, PDMAX=625mW ; unless otherwise specified )
Characteristic
Symbol
Test Condition*
SN317Lx
Min. Typ. Max.
Unit
Line Regulation *
Load Regulation *
Adjustable Pin Current
VO(Line)
3.0V VI-VO 40V
3.0V VI-VO 40V
VO(Load)
10mA IO 100mA
TA=+25
10mA IO 100mA
TA=0~+125
IADJ -
TA=+25
TA=0~+125
VO < 5V
VO 5V
VO < 5V
VO 5V
Adjustable Pin Current Change
Reference Voltage
Temperature Stability
IADJ
VREF
STT
3.0V VI-VO 40V
10mA IO 100mA, PDPDMAX
3.0V VI-VO 40V
10mA IO IMAX , PD PDMAX
0Tj 125
- 0.01 0.04
%/V
- 0.02 0.07
-
5.0 25.0 mV
0.1 0.5 % / VO
-
20.0 70.0 mV
0.3 1.5 % / VO
- 50 100 uA
- 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 -
- 80.0 -
Output Noise Voltage
VNO 10Hz f 100kHz
TA =25
- 0.003 -
%
Minimum Load Current to
Maintain Regulation
IL(MIN)
VI-VO = 40V
- 3.5 10.0 mA
Maximum Output Current
IO(MAX)
VI-VO 15V, PD PMAX
VI-VO 40V, PD PMAX
TA =25
100 200
-
mA
25 50
-
Long-Term Stability
ST
TA = +25for end point measurements,
1000HR
- 0.3 - %
* Load and line regulation are specified at constant temperature. Change in VO due to heating effects
must be taken into account separately.
** CADJ is connected between the adjustable pin and ground.
December, 2010 REV. 00
KSD-I5B009-000
4



SN317L datasheet pdf
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