器件名称: LM79XXAT
功能描述: 3-TERMINAL 1A NEGATIVE VOLTAGE REGULATORS
文件大小: 194.91KB 共15页
简 介:LM79XX/A (KA79XX, MC79XX) FIXED VOLTAGE REGULATOR (NEGATIVE)
3-TERMINAL 1A NEGATIVE VOLTAGE REGULATORS
The LM79XX series of three-terminal negative regulators are available in TO-220 package and with several fixed output voltages, making them useful in a wide range of applications. Each type employs internal current limiting, thermal shut-down and safe area protection, making it essentially indestructible. TO-220
FEATURES
Output Current in Excess of 1A Output Voltages of -5, -6, -8, -12, -15, -18, -24V Internal Thermal Overload Protection Short Circuit Protection Output Transistor Safe-Area Compensation 1: GND 2: Input 3: Output
ORDERING INFORMATION
Device LM79XXCT LM79XXAT Output Voltage Tolerance ± 4% ± 2% Package TO-220 Operating Temperature 0 ~ +125 °C
BLOCK DIAGRAM
GND
R1 VOLTAGE REFERENCE
R2
Out +
Q1
Q2 PROTECTION CIRCUITRY Rsc
I1
I2
In
Rev. B
1999 Fairchild Semiconductor Corporation
LM79XX/A (KA79XX, MC79XX) FIXED VOLTAGE REGULATOR (NEGATIVE)
ABSOLUTE MAXIMUM RATINGS (TA=+25°C, unless otherwise specified)
Characteristic Input Voltage Thermal Resistance Junction-Cases Junction-Air Operating Temperature Range Storage Temperature Range Symbol VI RθJC RθJA TOPR TSTG Value -35 5 65 0 ~ +125 - 65 ~ +150 Unit V °C / W °C /W °C °C
LM7905 ELECTRICAL CHARACTERISTICS
(VI = 10V, lO = 500mA, 0°C ≤T J ≤ +125°C, CI =2.2F, CO =1F, unless otherwise specified.) Characteristic Output Voltage Symbol VO Test Conditions TJ =+25°C IO = 5mA to 1A, PO 15W VI = -7 to -20V V……
