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KA7909

Fairchild
Part Number KA7909
Manufacturer Fairchild
Description 3-Terminal 1A Negative Voltage Regulator
Published Apr 25, 2005
Detailed Description KA79XX / KA79XXA / LM79XX — 3-Terminal 1 A Negative Voltage Regulator KA79XX / KA79XXA / LM79XX 3-Terminal 1 A Negative...
Datasheet PDF File KA7909 PDF File

KA7909
KA7909

Overview
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 may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maximum ratings are stress ratings only.
Values are at TA = 25°C unless otherwise noted.
Symbol Parameter Value Unit VI RθJC RθJA TOPR TSTG Input Voltage Thermal Resistance, Junction-Case(1) Thermal Resistance, Junction-Air(1, 2) O...


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