器件名称: 7805
功能描述: 3-Terminal 1A Positive Voltage Regulator
文件大小: 227.11KB 共28页
简 介:www.fairchildsemi.com
KA78XX/KA78XXA
3-Terminal 1A Positive Voltage Regulator
Features
Output Current up to 1A Output Voltages of 5, 6, 8, 9, 10, 12, 15, 18, 24V Thermal Overload Protection Short Circuit Protection Output Transistor Safe Operating Area Protection
Description
The KA78XX/KA78XXA series of three-terminal positive regulator are available in the TO-220/D-PAK 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 operating area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltages and currents.
TO-220
1 D-PAK
1 1. Input 2. GND 3. Output
Internal Block Digram
Rev. 1.0.0
2001 Fairchild Semiconductor Corporation
KA78XX/KA78XXA
Absolute Maximum Ratings
Parameter Input Voltage (for VO = 5V to 18V) (for VO = 24V) Thermal Resistance Junction-Cases (TO-220) Thermal Resistance Junction-Air (TO-220) Operating Temperature Range (KA78XX/A/R) Storage Temperature Range Symbol VI VI RθJC RθJA TOPR TSTG Value 35 40 5 65 0 ~ +125 -65 ~ +150
°
Unit V V C/W
° ° °C/W
C C
Electrical Characteristics (KA7805/KA7805R)
(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =10V, CI= 0.33F, CO=0.1F, unless otherwise specified) Parameter Symbol TJ ……
