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TK71646SCL Datasheet(PDF) 1 Page - TOKO, Inc |
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TK71646SCL Datasheet(HTML) 1 Page - TOKO, Inc |
1 / 20 page December 1999 TOKO, Inc. Page 1 TK716xx FEATURES s Available in ± 2.0 % or ± 1.0 % Output Tolerance s Active High On/Off Control s Very Low Quiescent Current s Very Low Dropout Voltage s Reverse Bias Protection s Miniature Package (SOT23-5) s Short Circuit Switch s High Ripple Rejection s Very High Output Impedance (Output Off) s Very Low Noise BLOCK DIAGRAM TK716xx 20P GND VIN NOISE BYPASS VOUT CONTROL CONTROL GND VIN VOUT BANDGAP REFERENCE CONSTANT CURRENT SOURCE THERMAL AND OVERCURRENT PROTECTION DISCONNECT CIRCUIT NOISE BYPASS + - CONTROL CIRCUIT TK716 SCL TK716 S I L TK716 SCL H ORDERING INFORMATION TAPE/REEL CODE L: Tape Left TEMPERATURE CODE C: Standard Temp. Range I: Extended Temp. Range PACKAGE CODE S: SOT23-5 TOLERANCE CODE H: 1 % Output Voltage Tolerance (Not available in I temp code) CAPACITOR CODE None: Ceramic Capacitor A: Tantalum Capacitor Tape/Reel Code Voltage Code Temp. Code Package Code VOLTAGE CODE* 13 = 1.3 V 14 = 1.4 V 15 = 1.5 V 16 = 1.6 V 17 = 1.7 V 18 = 1.8 V 19 = 1.9 V 20 = 2.0 V 21 = 2.1 V 22 = 2.2 V 23 = 2.3 V 24 = 2.4 V 25 = 2.5 V 26 = 2.6 V Tolerance Code Capacitor Code 27 = 2.7 V 28 = 2.8 V 29 = 2.9 V 30 = 3.0 V 31 = 3.1 V 32 = 3.2 V 33 = 3.3 V 34 = 3.4 V 35 = 3.5 V 36 = 3.6 V 37 = 3.7 V 38 = 3.8 V 39 = 3.9 V 40 = 4.0 V 41 = 4.1 V 42 = 4.2 V 43 = 4.3 V 44 = 4.4 V 45 = 4.5 V 46 = 4.6 V 47 = 4.7 V 48 = 4.8 V 49 = 4.9 V 50 = 5.0 V 51 = 5.1 V 52 = 5.2 V 53 = 5.3 V 54 = 5.4 V *Check Table 4 for availability. DESCRIPTION The TK716xx is a low dropout linear regulator housed in a small SOT23-5 package, rated at 500 mW. The phase compensation in the IC has been optimized to allow the use of ceramic or tantalum output capacitors. The device is in the “on” state when the control pin is pulled to a logic high level. An internal PNP pass transistor is used to achieve a low dropout voltage of 90 mV (typ.) at 50 mA load current. This device offers high precision output voltage of ± 2.0 % or ± 1.0 %. The low quiescent current and dropout voltage make this part ideal for battery pow- ered applications. This part incorporates an output discon- nect feature to reduce the reverse bias current in the “off” state to less than 50 nA. APPLICATIONS s Battery Powered Systems s Cellular Telephones s Pagers s Personal Communications Equipment s Portable Instrumentation s Portable Consumer Equipment s Radio Control Systems s Toys s Low Voltage Systems LOW DROPOUT VOLTAGE REGULATOR The internal reverse bias protection eliminates the require- ment for a reverse voltage protection diode, saving cost and board space. The high 60 dB ripple rejection (400 Hz) and low noise provide enhanced performance for critical applications. An external capacitor can be connected to the noise bypass pin to lower the output noise level to 30 µVrms. |
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