KA7805

描述

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.

Parameter Input Voltage (for to 18V) (for = 24V) Thermal Resistance Junction-Cases (TO-220) Thermal Resistance Junction-Air (TO-220) Operating Temperature Range (KA78XX/A/R) Storage Temperature Range Symbol VI RJC RJA TOPR TSTG Value

(Refer to test circuit VI =10V, CI= 0.33µF, CO=0.1µF, unless otherwise specified) Parameter Symbol =+25 oC Output Voltage to 1.0A VI= to 25V IO= =+25 C

Line Regulation (Note1) Load Regulation (Note1) Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Output Resistance Short Circuit Current Peak Current

Note: 1. Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account separately. Pulse testing with low duty is used.

(Refer to test circuit VI =11V, CI= 0.33µF, CO=0.1µF, unless otherwise specified) Parameter Symbol =+25 oC Output Voltage = 1KHz VI= =+25 C

Note: 1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used.