KA7910

www.fairchildsemi.com KA79XX/KA79XXA 3-Terminal 1A Negative Voltage Regulator r Features Output Current in Excess of 1A Output Voltages of -5, -6, -8, -9, -10, -12, -15, -18 , -24V Internal Thermal Overload Protection Short Circuit Protection Output Transistor Safe Operating Area Compensation Description The KA79XX/KA79XXA 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 shutdown and safe operating area protection, making it essentially indestructible. TO-220 Vin 1 1. GND 2. Input 3. Output Internal Block Digram GND R1 VOLTAGE REFERENCE R2 Out Output + Q1 Q2 PROTECTION CIRCUITRY Rsc I1 I2 Input In Rev. 1.0.1 ©2002 Fairchild Semiconductor Corporation KA79XX/KA79XXA Absolute Maximum Ratings Parameter Input Voltage Thermal Resistance Junction-Case (Note1) Thermal Resistance Junction-Air (Note1, 2) Operating 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 RθJC RθJA TOPR TSTG Value -35 5 65 0 ~ +125 - 65 ~ +150 Unit V °C/W °C/W °C °C Electrical Characteristics (KA7905) (VI = -10V, IO = 500mA, 0°C ≤ TJ ≤ +125°C, CI =2.2µF, CO =1µF, unless otherwise specified.) Parameter Output Voltage Symbol TJ = +25°C VO IO = 5mA to 1A, PO ≤15W VI = -7V...