TK70403

TK70403 1.03 V REGULATOR WITH ON/OFF SWITCH FEATURES s s s s s s Low Input Voltage Operation (Single Battery Cell) Internal PNP Transistor Internal Shutdown Control (Off Current, 0.1 µA max) Low Dropout Voltage [30 mV (typ.) at 2 mA] Miniature Package (SOT-26) Very Low Noise APPLICATIONS s s s s s Pagers Personal Communication Equipment Portable Consumer Equipment Radio Control Systems Single Battery Cell Systems DESCRIPTION TK70403 is a low dropout, linear regulator with a built-in electronic switch. A pin for a bypass capacitor is provided, which connects to the internal circuitry to lower the overall output noise level. An internal PNP pass-transistor is used in order to achieve low dropout voltage (typically 30 mV at 2 mA load current). This makes it possible to maintain a stable output voltage as the battery voltage decreases, extending the useful battery life. The TK70403 is available in a miniature SOT-26 surface mount package. TK70403 VOUT 20 P NOISE BYPASS GND CONTROL GND VIN ORDERING INFORMATION BLOCK DIAGRAM TK70403MTB VIN VOUT Tape/Reel Code TAPE/REEL CODE TB: Tape Left CONTROL BANDGAP REFERENCE GND NOISE BYPASS January 1999 TOKO, Inc. Page 1 TK70403 ABSOLUTE MAXIMUM RATINGS Supply Voltage ........................................................... 6 V Power Dissipation (Note 1) ................................ 350 mW Junction Temperature ........................................... 150 °C Storage Temperature Range ................... -55 to +150 °C...