器件名称: 78M05
功能描述: 3-Terminal 0.5A Positive Voltage Regulator
文件大小: 88.87KB 共14页
简 介:www.fairchildsemi.com
MC78MXX/LM78MXX
3-Terminal 0.5A Positive Voltage Regulator
Features
Output Current up to 0.5A Output Voltages of 5, 6, 8, 12, 15, 18, 24V Thermal Overload Protection Short Circuit Protection Output Transistor Safe Operating Area (SOA)Protection
Description
The MC78MXX/LM78MXX series of three-terminal positive regulators are available in the TO-220/D-PAK package with several fixed output voltages making it useful in a wide range of applications.
TO-220
GND
1
D-PAK
GND
1
1. Input 2. GND 3. Output
Internal Block Digram
INPUT 1
SERIES PASS ELEMENT
OUTPUT 3
CURRENT GENERATOR
SOA PROTECTION
R1
STARTING CIRCUIT
REFERENCE VOLTAGE
ERROR AMPLIFIER
R2 THERMAL PROTECTION
GND 2
Rev. 1.0.5
2002 Fairchild Semiconductor Corporation
MC78MXX/LM78MXX
Absolute Maximum Ratings
Parameter Input Voltage (for VO = 5V to 18V) (for VO = 24V) Thermal Resistance Junction-Case (Note1) TO-220 (Tc = +25°C) Thermal Resistance Junction-Air (Note1, 2) TO-220 (Ta = +25°C) D-PAK (Ta = +25°C) Operating Junction Temperature Range Storage Temperature Range
Note: 1. Thermal resistance test board Size: 76.2mm * 114.3mm * 1.6mm(1S0P) JEDEC standard: JESD51-3, JESD51-7 2. Assume no ambient airflow
Symbol VI VI RθJC RθJA TOPR TSTG
Value 35 40 2.5 66 92 0 ~ +150 -65 ~ +150
Unit V V °C/W °C/W °C °C
Electrical Characteristics (MC78M05/LM78M05)
(Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI=10V, unless otherwise specified, CI = 0.33F, CO=0.1F) Parameter Out……
