TS317L_14 Datasheet, PDF (1/10 Pages) Taiwan Semiconductor Company, Ltd – 3-Terminal Adjustable Positive Voltage Regulator

TS317L
3-Terminal Adjustable Positive Voltage Regulator
SOP-8
Pin Definition:
1. Input
2. Output
3. Output
4. Adjustable
8. N/C
7. Output
6. Output
5. N/C
General Description
The TS317L is adjustable 3-terminal positive voltage regulator capable of supplying in excess of 100mA 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. Besides replacing fixed regulators, the TS317L is useful in a
wide variety of other applications. Since the regulator is “floating “ and sees only the input-to-output differential
voltage, supplies of several hundred volts can be regulated as long as the maximum input-to-output differential is not
exceeded. Also, it makes an especially simple adjustable switching regulator, a programmable output regulator, or by
connecting a fixed resistor between the adjustment and output, the TS317L can be used as a precision current
regulator. Supplies with electronic shutdown can be achieved by clamping the adjustment terminal to ground which
programs the output to 1.25V where most loads draw little current.
Features
● Output Voltage Range 1.25 to 37V
● Output current in Excess of 100mA
● Eliminates Stocking Many Fixed Voltages
● Internal Thermal Overload Protection
● Current Limit Constant with Temperature
● Output transistor safe-area compensation
● Output voltage offered in 4% tolerance
● Floating Operation for High Voltage Applications
Ordering Information
Part No.
TS317LCS RL
Package
SOP-8
Packing
2.5kpcs / 13” Reel
Standard Application Circuit
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 ) + IAdjR2
Since IAdj is controlled to less than 100µA, the error
associated with this term is negligible in most applications
Absolute Maximum Ratings (Ta = 25^oC unless otherwise noted)
Parameter
Symbol
Input Voltage
Power Dissipation
Operating Junction Temperature
Storage Temperature Range
Thermal Resistance - Junction to Ambient
V_IN
P_D
T_J
T_STG
R_Ó¨JA
Limit
40
Internal Limited
-20~+125
-65~+150
165
Unit
V
W
o_C
o_C
o_C/W
1/10
Version: C14