器件名称: MC7905
功能描述: THREE-TERMINAL NEGATIVE FIXED VOLTAGE REGULATORS
文件大小: 186.14KB 共12页
简 介:Order this document by MC7900/D
Three-Terminal Negative Voltage Regulators
The MC7900 series of fixed output negative voltage regulators are intended as complements to the popular MC7800 series devices. These negative regulators are available in the same seven–voltage options as the MC7800 devices. In addition, one extra voltage option commonly employed in MECL systems is also available in the negative MC7900 series. Available in fixed output voltage options from – 5.0 V to – 24 V, these regulators employ current limiting, thermal shutdown, and safe–area compensation – making them remarkably rugged under most operating conditions. With adequate heatsinking they can deliver output currents in excess of 1.0 A. No External Components Required
MC7900 Series
THREE–TERMINAL NEGATIVE FIXED VOLTAGE REGULATORS
T SUFFIX PLASTIC PACKAGE CASE 221A Heatsink surface connected to Pin 2.
1 2 3
Internal Thermal Overload Protection Internal Short Circuit Current Limiting Output Transistor Safe–Area Compensation Available in 2% Voltage Tolerance (See Ordering Information)
Representative Schematic Diagram
Gnd 14.7 k 2.4 k 2.0 k 2.0 k 8.0 k 1.0 k 4.0 k 12 k 1.0 k 1.6 k R2 4.0 k R1
Pin 1. Ground 2. Input 3. Output D2T SUFFIX PLASTIC PACKAGE CASE 936 (D2PAK)
25
3.6 k 1.2 k
1
2 3
Heatsink surface (shown as terminal 4 in case outline drawing) is connected to Pin 2.
10 k 20 pF 10 pF 2.0 k 1.1 k 750 20 k 20 k 10 k 240
VO
STANDARD APPLICATION
MC79XX
Input Cin* 0.33 F
0.3
Output CO*……
