LM7909

TIGER ELECTRONIC CO.,LTD Product specification 3-Terminal Positive Voltage Regulator GENERAL DESCRIPTION LM7909 The LM7909 series of three terminal positive regulators are available in the 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 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. O ABSOLUTE MAXIMUM RATINGS ( Ta = 25 C) Parameter Parameter Input Voltage Output Voltage Peak Current Operating Temperature Range Storage Temperature Range Symbol VI VO IPK TOPR TSTG Typ -35 -9.0 -2.2 0~125 -65~150 Unit V V A o C o TO-220 C ELECTRICAL CHARACTERISTICS ( Ta = 25 C) (Refer to test circuit, Io = -500mA, Vi = -15V, Ci= 2.2uF, Co=1.0uF unless otherwise specified) Parameter Output Voltage Line Regulation (Note1) Symbol VO Regline VI = -13V to -18V Load Regulation (Note1) Quiescent Current Quiescent Current Change Ripple Rejection Dropout Voltage Short Circuit Current Peak Current Regload IQ ΔIQ VI = -12V to -25V RR VDrop ISC IPK f = 120Hz, △Vi = 10V IO = -1A, TJ =+25 oC VI = -35V, TA =+25 oC TJ =+25 oC — 54 — — — — 60 -2 -300 -2.2 -1.0 — — — — dB V mA A IO = -5.0mA to-1.5A IO =-250mA to -750mA TJ =+25 oC IO = -5mA to -1A — — — — — -5 -12 -4 -3 — -90 -180 -90 -6 -0.5 mA mA mV Test Conditions VI = -12V to -23V,PO≤15W VI = -12V to -25V Min -8.6 — Typ -9.0 -10 Max -9.4 -180 mV Unit V O