LM317L3 Voltage Regulators Datasheet

LM317L3 Datasheet, PDF, Equivalent


Part Number

LM317L3

Description

Positive Voltage Regulators

Manufacture

CYStech

Total Page 12 Pages
Datasheet
Download LM317L3 Datasheet


LM317L3
CYStech Electronics Corp.
Three Terminal Adjustable Output
Positive Voltage Regulators
LM317L3
Spec. No. : C513L3
Issued Date : 2003.04.09
Revised Date :2013.10.31
Page No. : 1/12
The LM317L3 is an adjustable 3–terminal positive voltage regulator capable of supplying in excess of
1.5A 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.
The LM317L3 serves a wide variety of applications including local, on-card regulation. This device can
also be used to make a programmable output regulator, or by connecting a fixed resistor between the
adjustment and output, the LM317L3 can be used as a precision current regulator.
Output Current in Excess of 1.5 A
Output Adjustable between 1.2 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
Eliminates Stocking many Fixed Voltages
Pb-free lead plating and halogen-free package.
Standard Application
Vin
+
Cin
0.1μF
PLLM313717
IAdj
R2
Vout
R1
+
Cout
1.0μF
Cin is required if regulator is located an appreciate
distance from power supply filter.
**Cout is not needed for stability, however, it does
improve transient response.
Vout=1.25(1+R2/R1)+IAdjR2
Since IAdj is controlled to less than 100 μA, the
error associated with this term is negligible in
most applications.
Ordering Information
Device
LM317L3-0-T3-G
Package
SOT-223
(Pb-free lead plating and halogen-free package)
Shipping
2500 pcs / tape & reel
Environment friendly grade : S for RoHS compliant products, G for RoHS compliant and
green compound products
Packing spec, T3 : 2500 pcs / tape & reel, 13” reel
Product rank, zero for no rank products
Product name
LM317L3
CYStek Product Specification

LM317L3
CYStech Electronics Corp.
Package Information
Spec. No. : C513L3
Issued Date : 2003.04.09
Revised Date :2013.10.31
Page No. : 2/12
Pin Function
123
1
2
ADJ
OUTPUT
3 INPUT
SOT-223
Maximum Ratings TA=25°C
Rating
Input-Output Voltage Differential
Power Dissipation
Operating Junction Temperature Range
Storage Temperature Range
Symbol
VI-VO
PD
TJ
Tstg
Value
40
1.5
-40 to +125
-65 to +150
Unit
V
W
Electrical Characteristics(VI-VO=5V,IO=0.5A,TJ=0 to 125, unless otherwise noted)
Characteristics
Symbol Conditions
Line Regulation(Note 1)
Reg line TA=25,3.0VVI-VO40V
Load Regulation(Note 1)
Reg load TA=25,10mAIO1.5A
VO5.0V
VO5.0V
Thermal Regulation(Note 4) Reg therm TA=25, 20ms pulse
Adjust Pin Current
IAdj
Adjust Pin Current Change ΔIAdj
2.5VVI-VO40V,10mAIL1.5A
PD5W
Reference Voltage
Vref 3.0VVI-VO40V,10mAIO1.5A
PD5W
Temperature Stability
Ts
0TJ125
Minimum Load Current to ILmin VI-VO=40V
maintain Regulation
Maximum Output Current Imax VI-VO15V,PD5W
VI-VO40V,PD5W,TA=25
RMS Noise
N % of VO,TA=25,10Hzf10kHz
Ripple Rejection(Note 2)
RR
VO=10V,f=120Hz
Without CAdj
CAdj=10μF
Long-Term Stability(Note 3) S
TJ=125,TA=25for endpoint
measurements
Min
-
-
-
-
-
-
1.2
-
-
1. 5
0.15
-
-
66
-
Typ
0.01
5.0
0.1
0.03
50
0.2
1.25
0.7
3.5
2.2
0.4
0.003
65
80
0.3
Max Unit
0.04 %/V
25 mV
0.5 %VO
0.07 %VO/W
100 μA
5.0 μA
1.3 V
- %VO
10 mA
-A
-
- %VO
dB
-
-
1.0 %/1.0k
Hrs
Notes:1.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be
taken into account separately. Pulse testing with low duty cycle is used.
2.CAdj, when used, is connected between the adjustment pin and ground.
LM317L3
CYStek Product Specification


Features CYStech Electronics Corp. Three Terminal Adjustable Output Positive Voltage Reg ulators LM317L3 Spec. No. : C513L3 Iss ued Date : 2003.04.09 Revised Date :201 3.10.31 Page No. : 1/12 The LM317L3 is an adjustable 3–terminal positive vo ltage regulator capable of supplying in excess of 1.5A over an output voltage range of 1.2 V to 37 V. This voltage re gulator is exceptionally easy to use an d requires only two external resistors to set the output voltage. Further, it employs internal current limiting, ther mal shutdown and safe area compensation , making it essentially blow–out proo f. The LM317L3 serves a wide variety of applications including local, on-card regulation. This device can also be use d to make a programmable output regulat or, or by connecting a fixed resistor b etween the adjustment and output, the L M317L3 can be used as a precision curre nt regulator. ● Output Current in Exc ess of 1.5 A ● Output Adjustable betw een 1.2 V and 37 V ● Internal Thermal Overload Protection ● Internal Sh.
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