TK701xx 1.0 V LOW DROPOUT LINEAR REGULATOR FEATURES APPLICATIONS ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ Low Input Voltage Operation (Single Battery Cell) Internal PNP Transistor Built-In Shutdown Control (Off Current, 10 µA Typ) Low Dropout Voltage (30 mV Typ) High Speed ON/OFF Transient, (15 µs Typ) Very Small Surface Mount Package (SOT-25) Pagers Personal Communication Equipment Portable Consumer Equipment Radio Control Systems Single Battery Cell Systems TK701xx 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 µA, thus extending battery life. SHUT DOWN 1 6 VIN 4 VO GND 2 GND 3 The TK701xx is available in a very small plastic surface mount package (SOT-25). BLOCK DIAGRAM VIN ORDERING INFORMATION TK701 6 4 VO 2,3 GND M Tape/Reel Code SHUT DOWN + Voltage Code VOLTAGE CODE TAPE/REEL CODE 10 = 1.0 V BX : Bulk/Bag TL : Tape Left SHUT DOWN - 1 BANDGAP REFERENCE TK70110 BD January, 1996 TOKO, Inc. 1-16-96 Page 1 TK701xx ABSOLUTE MAXIMUM RATINGS Storage Temperature Range ................... -50 to +150 °C Operating Temperature Range ..................... 0 to +80 °C Lead Soldering Temp. (10 sec.) ......................... 240 °C Input Voltage .............................................................. 6 V Power Dissipation .............................................. 150 mW Operating Voltage Range .............................. 0.9 to 5.0 V Junction Temperature .......................................... 150 °C Tk70110 ELECTRICAL CHARACTERISTICS Test Conditions: VIN = 1.2 V, TA = 25 °C, unless otherwise specified. SYMBOL PARAMETER TEST CONDITIONS MIN TYP MAX UNITS IIN Supply Current IO = 0 mA, V IN = 1.2 V 190 µA ISTBY Standby Current VIN = 1.2 V, Output off 10 µA VO Output Voltage V DROP Dropout Voltage IO Output Current Line Reg Line Regulation VO + 1.2 V ≤ VIN ≤ 2.2 V Load Reg Load Regulation IO = 0 → 2 mA 0.95 IO = 2 mA 1.0 1.05 30 V mV 20 mA 50 mV 2 10 mV IO = 0 → 10 mA 5 25 mV 36 dB 0.05 dB RR Ripple Rejection CL = 3.3 µF, 400 Hz ∆VO/∆TA Output Voltage Temperature Dependency 0 ≤ TA ≤ 60 °C Control Terminal Specification ICONT Control Current VCONT =1.0 V, RC = 0, Note 2 V CONT Control Voltage Output On -.05 Output Off 1.0 Note 1: Note 2: Page 2 22 50 µA 0.4 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. 1-16-96 January, 1996 TOKO, Inc. TK701xx TEST CIRCUIT IIN A VIN 5 4 VO OUT IN T K70110 VIN + + V CL VO IO 0.1 µ F VSD SHUT DOWN 1 2 3 CL = 2.2 µ F Rc GND TYPICAL PERFORMANCE CHARACTERISTICS OUTPUT VOLTAGE vs. OUTPUT CURRENT VIN = 1.2 V 1.0 VO (V) VO (V) 0.8 1.0 0.6 0 20 50 IO (mA) RC = 20 k RC = 30 k 0 100 1.0 VCONT (V) 0 12 1 QUIESCENT CURRENT vs. INPUT VOLTAGE TA = 25 °C 2.0 13 RIPPLE REJECTION NOISE SPECTRUM -50 50 RC = 20 k 50 R = 0 C VIN = 1.0 V 0 10 IO (mA) RC = 10 k RC = 10 k VIN = 1.1 V 0.2 0 RC = 0 RC = 30 k TA = 25 °C 0.4 0.95 TA = 25 °C VO 100 ICONT (µ A) TA = 25 °C 1.05 ON/OFF CONTROL TERMINAL (SERIES RESISTOR RC) SHORT CIRCUIT CURRENT 0 IO = 3 mA TA = 25 °C 25 0 1.0 VIN (V) 2.0 CL = 1 µ F -100 10 µ F (SPECTRUM ANALYZER ONLY) 0 500 kHz FREQUENCY 14 January, 1996 TOKO, Inc. Ripple Rejection (dB) NOISE (dB) IQ(OFF) (µ A) TA = 25 °C 1-16-96 1 MHz 15 -50 -100 .1 1 10 Frequency (kHz ) 100 7 Page 3 TK701xx TYPICAL PERFORMANCE CHARACTERISTICS (CONT.) LINE TRANSIENT RESPONSE OUTPUT (ON/OFF) CONTROL RESPONSE LOAD TRANSIENT RESPONSE 6.0 1.6 VIN TA = 25 °C IO 1.2 SD TA = 25 °C CL = 1 µ F VO 0 1.05 VO CL = 3.3 µ F TA = 25 °C 1.05 VO 1.01 1.01 50 µ s/DIV 50 µ s/DIV 8 10 µ s/DIV 9 10 TK70110 OUTPUT VOLTAGE vs. OUTPUT CURRENT QUIESCENT CURRENT vs. OUTPUT CURRENT 1.0 0.95 0 10 IO (mA) 0.5 0 20 10 IO (mA) 20 0.8 1.0 1.5 3 OUTPUT VOLTAGE vs. SUPPLY VOLTAGE VO (V) +25 .96 OUTPUT VOLTAGE DRIFT vs. TEMPERATURE TA = 25 °C TA = 25 °C 1.1 VO (mV) TA = 25 °C 1.8 VIN (V) 2 INPUT CURRENT (NO LOAD) vs. INPUT VOLTAGE IIN (µ A) 1.0 0.7 0 16 500 TA = 25 °C 1.2 VO (V) IO (mA) VO (V) TA = 25 °C 1.0 1.05 OUTPUT VOLTAGE vs. SUPPLY VOLTAGE IO = 5.0 mA 0 IO = 2.5 mA IO = 0 mA 0.91 0 0 1 2 3 VIN (V) 4 5 0.8 0.9 1.0 1.1 VIN (V) 1.3 -30 -50 0 50 TEMPERATURE (°C) 100 5 4 Page 4 1.2 1-16-96 6 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. AAA AAAA AAAAAAA AA AAAAAAA AA AAAAAAA AA VIN GND VO 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 µF is required to maintain stability. The standard test condition is 3.3 µF (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 ) 0.7 4 (0.6) e1 1.6 2.6 +0.2 -0.3 1.0 (0.6) 5 Marking Information 2 3 e 0.4 e 0.95 e 0.95 ± 0.1 0.1 M 0.95 1.90 0.95 Recommended Mount Pad (1.9) 0.8 0 ~0.1 1.1 ± 0.1 +0.1 -0.05 ± 0.2 1.3max 2.9 e e' 0.16 1 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 © 1993 Toko America, Inc. All Rights Reserved 1-16-96 Please order by literature number: IC-135-TK70110 January, 1996 TOKO, Inc. Printed in U.S.A.