KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator
KA79XX / KA79XXA / LM79XX 3-Terminal 1 A Negative...
KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage
Regulator
KA79XX / KA79XXA / LM79XX 3-Terminal 1 A Negative Voltage
Regulator
September 2014
Features
Output Current in Excess of 1 A Output Voltages of: -5 V, -6 V, -8 V, -9 V, -12 V, -15 V,
-18 V, -24 V Internal Thermal Overload Protection Short-Circuit Protection Output
Transistor Safe Operating Area Compensation
Description
The KA79XX / KA79XXA / LM79XX series of three-terminal negative
regulators are available in a TO-220 package with several fixed output voltages, making them useful in a wide range of applications. Each type employs internal current limiting, thermal shutdown, and safe operating area protection.
TO-220
Input
Ordering Information
Product Number
KA7905TU KA7906TU KA7908TU KA7909TU KA7912TU KA7915TU KA7918TU KA7924TU KA7912ATU KA7915ATU LM7905CT LM7908CT LM7909CT LM7910CT LM7912CT LM7915CT LM7918CT
Output Voltage Tolerance
±4%
±2%
±4%
© 2002 Fairchild Semiconductor Corporation KA79XX / KA79XXA / LM79XX Rev. 1.1.1
1
1. GND 2. Input 3. Output
Package
Packing Method
Operating Temperature
TO-220 (Dual Gauge)
Rail
0 to +125°C
TO-220 (Single Gauge)
www.fairchildsemi.com
KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage
Regulator
Block Diagram
GND
VOLTAGE REFERENCE
I1
R1
R2
OOuutptut +
Q1
-
Q2 PROTECTION I2 CIRCUITRY
Rsc
In Input
Figure 1. Block Diagram
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device ma...