KK1117-1.25 Datasheet, PDF (1/4 Pages) KODENSHI KOREA CORP. – 1.0A Low Dropout Positive Voltage Regulator

TECHNICAL DATA
THREE-TERMINAL ADJUSTABLE
KK317
OUTPUT POSITIVE VOLTAGE REGULATORS
The KK317 is adjustable 3-terminal positive voltage
regulator capable of supplying in excess of 1.5 A over an
output voltage range of 1.2 V to 37 V. These voltage
regulator is exceptionally easy to use and require only two
external resistors to set the output voltage. Further, it employ
internal current limiting, thermal shutdown and safe area
compensation, making
them essentially blow-out proof.
The KK317 serve a wide variety of applications to
make a programmable output regulator, or by connecting a
fixed resistor between the adjustment and output, the KK
317 series can be used as a precision current requlator.
TO-220 AB
Pin 1. Ajust
2. Vout
3. Vin
(Heatsink
surface connected
to Pin 2.)
Standard application
• Output Current in Excess of 1.5 Ampere
• 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
• Standard 3-lead Transistor Packages
• Eliminates Stocking Many Fixed
Vin
Ñ_in*
0.1_µF
K K 317
Adjust
R2
Vout
R1
Ñ_o**
1_µF
∗ ^{= Cin is required if regulator is located an ap-}
preciable distance from power supply filter.
∗∗ ^{= Co is not needed for stability ; however, is}
does improve transient response.
I ^Vout
= 1.25V (1+
R2
)
+
R1
ADJ ^{∗ R2}
Since I ADJ is controlled to less then 100 _µA, the
error associated with this term is negligible in most
applications.
Maximum ratings
Rating
Input - Output Voltage Differential
Power Dissipation and Thermal Characteristics
Operating Junction Temperature Rang
Storage Junction Temperature Rang
Symbol
Value
Unit
Vi - Vo
40
Vdc
PD
Internally Limited
TJ
-0 to +150
°C
Tstg
-65 to +150
°C
1