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| TK701xx 1.0 V LOW DROPOUT LINEAR REGULATOR FEATURES s s s s s s Low Input Voltage Operation (Single Battery Cell) Internal PNP Transistor Built-In Shutdown Control (Off Current, 10 A Typ) Low Dropout Voltage (30 mV Typ) High Speed ON/OFF Transient, (15 s Typ) Very Small Surface Mount Package (SOT-25) APPLICATIONS s s s s s Pagers Personal Communication Equipment Portable Consumer Equipment Radio Control Systems Single Battery Cell Systems DESCRIPTION The TK701xx is a very low dropout, low input voltage operation regulator suitable for single battery cell applications. This regulator provides 1.0 V output with a dropout voltage of only 30 mV. The active low control provides on/ off switching of the output. In the off mode, the standby supply current is 10 A, thus extending battery life. The TK701xx is available in a very small plastic surface mount package (SOT-25). TK701xx SHUT DOWN 1 GND 2 GND 3 6 VIN 4 VO BLOCK DIAGRAM VIN 6 4 VO ORDERING INFORMATION TK701 M Tape/Reel Code Voltage Code SHUT DOWN + SHUT DOWN 1 - VOLTAGE CODE 10 = 1.0 V TAPE/REEL CODE BX : Bulk/Bag TL : Tape Left BANDGAP REFERENCE 2,3 GND TK70110 BD January, 1996 TOKO, Inc. 1-16-96 Page 1 TK701xx ABSOLUTE MAXIMUM RATINGS Input Voltage .............................................................. 6 V Power Dissipation .............................................. 150 mW Operating Voltage Range .............................. 0.9 to 5.0 V Junction Temperature .......................................... 150 C Storage Temperature Range ................... -50 to +150 C Operating Temperature Range ..................... 0 to +80 C Lead Soldering Temp. (10 sec.) ......................... 240 C Tk70110 ELECTRICAL CHARACTERISTICS Test Conditions: VIN = 1.2 V, TA = 25 C, unless otherwise specified. SYMBOL IIN ISTBY VO V DROP IO Line Reg Load Reg RR VO/TA PARAMETER Supply Current Standby Current Output Voltage Dropout Voltage Output Current Line Regulation Load Regulation Ripple Rejection Output Voltage Temperature Dependency VO + 1.2 V VIN 2.2 V IO = 0 2 mA IO = 0 10 mA CL = 3.3 F, 400 Hz 0 TA 60 C 2 5 36 0.05 IO = 2 mA 20 50 10 25 TEST CONDITIONS IO = 0 mA, V IN = 1.2 V VIN = 1.2 V, Output off 0.95 MIN TYP 190 10 1.0 30 1.05 MAX UNITS A A V mV mA mV mV mV dB dB Control Terminal Specification ICONT V CONT Control Current Control Voltage VCONT =1.0 V, RC = 0, Note 2 Output On Output Off Note 1: Note 2: 22 -.05 1.0 50 0.4 A V V Must be used within the power dissipation curve. Power dissipation is 350 mW when mounted as recommended. Control current may be decreased by connecting a series resistor to control pin. Page 2 1-16-96 January, 1996 TOKO, Inc. TK701xx TEST CIRCUIT IIN A VIN 5 4 VO IN T K70110 OUT VIN + + CL IO V VO 0.1 F VSD SHUT DOWN 1 2 3 GND Rc CL = 2.2 F TYPICAL PERFORMANCE CHARACTERISTICS OUTPUT VOLTAGE vs. OUTPUT CURRENT 1.05 TA = 25 C SHORT CIRCUIT CURRENT 1.0 0.8 VIN = 1.2 V 100 ON/OFF CONTROL TERMINAL (SERIES RESISTOR RC) VO RC = 30 k TA = 25 C RC = 0 RC = 10 k RC = 20 k ICONT ( A) TA = 25 C VO (V) VO (V) RC = 10 k RC = 20 k 50 R = 0 C 0.6 0.4 0.2 VIN = 1.1 V VIN = 1.0 V 0 50 IO (mA) 100 12 1.0 0.95 0 10 IO (mA) 20 1 0 0 0 1.0 VCONT (V) RC = 30 k 2.0 13 QUIESCENT CURRENT vs. INPUT VOLTAGE -50 50 TA = 25 C NOISE SPECTRUM IO = 3 mA TA = 25 C CL = 1 F 10 F (SPECTRUM ANALYZER ONLY) 0 RIPPLE REJECTION TA = 25 C -100 Ripple Rejection (dB) IQ(OFF) ( A) NOISE (dB) 25 -50 0 1.0 VIN (V) 2.0 14 0 500 kHz FREQUENCY 1 MHz 15 -100 .1 1 10 100 7 Frequency (kHz ) January, 1996 TOKO, Inc. 1-16-96 Page 3 TK701xx TYPICAL PERFORMANCE CHARACTERISTICS (CONT.) LINE TRANSIENT RESPONSE 6.0 1.6 VIN 1.2 TA = 25 C CL = 1 F 0 1.05 VO 1.01 TA = 25 C 1.05 VO 1.01 50 s/DIV 50 s/DIV VO CL = 3.3 F IO SD LOAD TRANSIENT RESPONSE OUTPUT (ON/OFF) CONTROL RESPONSE TA = 25 C 8 9 10 s/DIV 10 TK70110 OUTPUT VOLTAGE vs. OUTPUT CURRENT 1.05 1.0 QUIESCENT CURRENT vs. OUTPUT CURRENT TA = 25 C 1.2 OUTPUT VOLTAGE vs. SUPPLY VOLTAGE TA = 25 C IO (mA) VO (V) VO (V) 0.5 1.0 1.0 0.95 0 10 IO (mA) 20 16 0 0 10 IO (mA) 20 2 0.7 0.8 1.0 VIN (V) 3 1.5 1.8 INPUT CURRENT (NO LOAD) vs. INPUT VOLTAGE 500 TA = 25 C 1.1 OUTPUT VOLTAGE vs. SUPPLY VOLTAGE TA = 25 C +25 OUTPUT VOLTAGE DRIFT vs. TEMPERATURE TA = 25 C IIN ( A) VO (mV) VO (V) 0 .96 IO = 5.0 mA IO = 2.5 mA 0 0 1 2 3 VIN (V) 4 5 4 0.91 0.8 0.9 IO = 0 mA 1.0 1.1 VIN (V) 1.2 1.3 5 -30 -50 0 50 TEMPERATURE (C) 100 6 Page 4 1-16-96 January, 1996 TOKO, Inc. TK701xx APPLICATION NOTES RECOMMENDED MOUNTING Optimum performance can only be achieved when the IC is mounted on a PC board according to the diagram below. This is because of the extremely small package and limited power dissipation. Shape the metal portion of the PCB as shown in the following drawing. VIN VO GND GND ON/OFF or CP Use a large bypass capacitor and connect it in a place near GND of the IC. Pay attention to temperature characteristics of the capacitor, especially the increase of ESR and decrease of capacitance in low temperatures. Oscillation, reduction of ripple rejection and increased noise may occur in some cases if the proper capacitor is not used. An output capacitor more than 1.0 F is required to maintain stability. The standard test condition is 3.3 F (TA = 25 C). DROPOUT VOLTAGE Dropout voltage is the voltage difference between the input voltage and the output voltage where the output voltage decreases to 100 mV below the nominal output voltage as the input voltage is decreased. To measure dropout voltage, set the input voltage to the nominal output voltage +1 V and measure the output voltage. Reduce the input voltage to the point where the output is 100 mV below the previously measured value. The dropout voltage is the difference between the input and output voltage at this point. This voltage depends on the load current and ambient temperature. January, 1996 TOKO, Inc. 1-16-96 Page 5 TK701xx PACKAGE OUTLINE ( ) SOT-25 5 4 0.7 (0.6) +0.2 -0.3 1.0 1.6 Marking Information 1 2 3 (0.6) e 0.4 e 0.1 0.95 0.1 M e' e 0.95 0.95 e 0.95 1.90 Recommended Mount Pad (1.9) 2.9 0.2 +0.1 -0.05 1.3max 0.1 e1 2.6 0 ~0.1 1.1 0.8 2.8 +0.2 -0.3 Unit:mm Marking Information TK70110 K10 The information furnished by TOKO, Inc. is believed to be accurate and reliable. However, TOKO reserves the right to make changes or improvements in the design, specification or manufacture of its products without further notice. TOKO does not assume any liability arising from the application or use of any product or circuit described herein, nor for any infringements of patents or other rights of third parties which may result from the use of its products. No license is granted by implication or otherwise under any patent or patent rights of TOKO, Inc. YOUR LOCAL REPRESENTATIVE IS: TOKO America, Inc. 1250 Feehanville Dr. Mt. Prospect, IL 60056 Tel: 1(800) PIK-TOKO Fax: 1(847) 699-1194 Page 6 (c) 1993 Toko America, Inc. All Rights Reserved 0.16 1-16-96 January, 1996 TOKO, Inc. Printed in U.S.A. Please order by literature number: IC-135-TK70110 |
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