ET-IL317L
100 m A
A d j u s t a b l e O u t p u t P o s i t i ve V o l t a g e R e g u l a t o r
The IL317L is an adjustable 3-terminal positive voltage regulator capable of
supplying in excess of 100 mA 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 them essentially blow –
out proof.
The IL317L 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 IL317L can be used as a precision current regulator.
1
2
3
Features
•
Output Current in Excess of 100 mA
•
Output Adjustable Between 1.2 V and 37 V
•
Internal Thermal Overload Protection
•
Internal Short Circuit Current Limiting
•
Output Transistor Safe-Area Compensation
•
Floating Operation for High Voltage Applications
•
Standard 3-Lead Transistor Package
•
Eliminates Stocking Many Fixed Voltages
Pin
1.Adjust
2.Vout
3. Vin
*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.
Vout = 1.25 V (1+R2/R1) + I
Adj
R2
Since I
Adj
is controlled to less than 100µA, the error
associated with this term is negligible in most applications.
MAXIMUM RATINGS
Rating
Input-Output Differential
Power Dissipation
Case TO-92
T
A
=25°C
Thermal Resistance, Junction-to-Ambient
Thermal Resistance, Junction-to-Case
Case SOIC-8 (Note 1)
T
A
=25°C
Thermal Resistance, Junction-to-Ambient
Thermal Resistance, Junction-to-Case
Operating Junction Temperature Range
Storage Temperature Range
Symbol
V
I
-V
o
P
D
Value
40
Internally Limited
Unit
Vdc
W
R
θJA
R
θJC
160
83
°C/W
°C/W
R
θJA
R
θJC
Tj
Tstg
180
45
-10 to +125
-65 to +150
°C/W
°C/W
°C
°C
1
BEIJING ESTEK ELECTRONICS CO.,LTD
ESTEK [ Estek Electronics Co. Ltd ]
