TS317L_07 Datasheet, PDF (1/11 Pages) Taiwan Semiconductor Company, Ltd – 3-Terminal Adjustable Positive Voltage Regulator

TS317L
3-Terminal Adjustable Positive Voltage Regulator
TO-92
Pin Definition:
1. Adjustable
2. Output
3. Input
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
Standard Application Circuit
Part No.
TS317LCT B0
TS317LCT A3
TS317LCS RL
Package
TO-92
TO-92
SOP-8
Packing
1Kpcs / Bulk
2Kpcs / Ammo
2.5Kpcs / 13” Reel
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_AdjR2
Since I_Adj is controlled to less than 100 µA, the error
associated with this term is negligible in most
applications
1/11
Version: B07