TK71440S

TK714xxS LDO Regulator with base terminal for Current Boost TK714xxS 1. DESCRIPTION The TK714xxS is a low dropout linear regulator with internal PNP pass transistor that can supply 100mA load current. The phase compensation in the IC has been optimized that the output capacitor can be omitted. The TK714xxS is provided with the On/Off control function and also with the base terminal for the external transistor that 1A low dropout regulator can be easily composed by connecting external transistor (Hfe around 100). 2. FEATURES „An external transistor can be used. (Base current Typ10mA) „ On/Off control available (High ON). „ No input current at Off mode „Excellent output stability (CL 0.022µF,Iout 2mA) „High ripple rejection (-70dB at 1kHz) „100mA load current guarantee „Output voltage available from 1.3 to 5.0V (0.1V step). 3. APPLICATIONS „ Electronic Equipment „ Battery Powered Systems Mobile communications, etc. 4. PIN CONFIGURATION Vin 1 GND 2 Vcont 3 5 4 Vout Base 5. BLOCK DIAGRAM Vin 1 GND 2 Vcont 3 SW Control Circuit Bandgap Reference Error Amp Over Current Limit Over Heat Protection 5 Vout 4 BASE GC3-H028A Page 2 6. ORDERING INFORMATION TK714xxS ORDERING INFORMATION TK714 Voltage Code EX 33 : 3.3V 50 : 5.0V Package Code S : SOT23-5 SL Tape/Reel Code Operating Temp Range C : -30~80 I : -40~85 Standard voltage (net multiplication bold-faced type) TK71415S TK71420S TK71425S TK71430S TK71435S TK71440S TK71445S TK71450S TK71416S TK71421S TK71426S TK7143...