TK716xx LOW DROPOUT VOLTAGE REGULATOR FEATURES APPLICATIONS DESCRIPTION ORDERING INFORMATION TK716 SCL TK716 S I L TK716 SCL H

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1 LOW DROP OLTAGE REGULATOR FEATURES Available in ± 2. % or ± 1. % Output Tolerance Active High On/Off Control ery Low Quiescent Current ery Low Dropout oltage Reverse Bias Protection Miniature Package (SOT23-5) Short Circuit Switch High Ripple Rejection ery High Output mpedance (Output Off) ery Low Noise APPLCATONS Battery Powered Systems Cellular Telephones Pagers Personal Communications Equipment Portable nstrumentation Portable Consumer Equipment Radio Control Systems Toys Low oltage Systems DESCRPTON The TK716xx is a low dropout linear regulator housed in a small SOT23-5 package, rated at 5 mw. The phase compensation in the C 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 9 m (typ.) at 5 ma load current. This device offers high precision output voltage of ± 2. % or ± 1. %. The low quiescent current and dropout voltage make this part ideal for battery powered applications. This part incorporates an output disconnect feature to reduce the reverse bias current in the off state to less than 5 na. The internal reverse bias protection eliminates the requirement for a reverse voltage protection diode, saving cost and board space. The high 6 db ripple rejection (4 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 3 µrms. 2P TK716xx GND oltage Code Capacitor Code Package Code OLTAGE CODE* 13 = = = = = = = = = = = = = = = = = = = = = = = = = = = = 4. *Check Table 4 for availability. ORDERNG NFORMATON TK716 SCL TK716 S L TK716 SCL H 41 = = = = = = = = = = = = = = 5.4 Tolerance Code Tape/Reel Code Temp. Code TAPE/REEL CODE L: Tape Left TEMPERATURE CODE C: Standard Temp. Range : Extended Temp. Range PACKAGE CODE S: SOT23-5 TOLERANCE CODE H: 1 % Output oltage Tolerance (Not available in temp code) CAPACTOR CODE None: Ceramic Capacitor A: Tantalum Capacitor CONTROL CONTROL BLOCK DAGRAM CONTROL CRCUT BANDGAP REFERENCE GND CONSTANT CURRENT SOURCE THERMAL AND OERCURRENT PROTECTON NOSE BYPASS - + DSCONNECT CRCUT NOSE BYPASS December 1999 TOKO, nc. Page 1

2 ABSOLUTE MAXMUM RATNGS Supply oltage Power Dissipation (Note 1)... 5 mw Reverse Bias oltage... 6 Control Terminal oltage Noise Bypass Terminal oltage... 5 Operating oltage Range to 12 Storage Temperature Range to +15 C Operating Temperature (Ambient) Range TK716xx SCL, TK716xx SCLH to +8 C TK716xx SL to +85 C Junction Temperature (Operating) C Junction Temperature (Shutdown) C Lead Soldering Temperature (1 s) C TK716xx SCL AND TK716xx SCLH ELECTRCAL CHARACTERSTCS Test conditions: N = (TYP) + 1, T A = 25 C, unless otherwise specified. SYMBOL Q STBY RE GND (PULSE) PARAMETER Quiescent Current Standby Current Reverse Bias Current TEST CONDTONS = ma, Excluding ONT N 8, Note 1: Power dissipation is 5 mw when mounted as recommended. Derate at 4. mw/ C for operation above 25 C. Gen Note: Exceeding the Absolute Maximum Ratings may damage the device. Gen Note: Parameters with min. or max. values are 1% tested at T A = 25 C. Gen Note: Ripple rejection 6 db when f = 4 Hz, C L = 1 µf, C N =.1 µf, input noise = 1 mrms, N = (TYP) and = 3 ma. Gen Note: Output noise is.13 ~.23 µ/ Hz at 1 khz when C N =.1 µf. MN TYP C MAX UNTS 7 1 µ A = Output OFF (.15 ). 1 µ A CONT N, = RE = 5, Output OFF 1 5 na GND Pin Current = 5 ma ma Continuous Output Current 15 ma P ulse Output Current 1 ms pulse, Duty Cycle = 4 % 2 ma Output oltage O UT / T Temperature Line Load DROP ref Reg Reg Line Regulation Load Regulation Dropout oltage Noise Bypass oltage N = + 1, = 5 ma See Table 1 and 2 O UT(TYP) Coefficient 2 ppm/ C Terminal CONTROL TERMNAL SPECFCATONS CONT CONT(ON) CONT(OFF) N = + 1 to m (TYP) (TYP) 1 ma < < 5 ma 4 18 m ma < < 1 ma 7 28 m 1 1 ma < < 15 ma 12 5 m O UT = 5 ma 9 16 m = 1 ma m = 15 ma m < m O UT 1.26 Control Current O UT = 1.6, Output ON 1 µ A Control oltage ON Control oltage OFF Output ON 1. 6 Output OFF. 6 Page 2 December 1999 TOKO, nc.

3 TK716xx SCL ELECTRCAL CHARACTERSTCS TABLE 1 Test Conditions: N = (TYP) + 1, = 5 ma, T A = 25 C, unless otherwise specified. Output oltage oltage Code (MN) (MAX) Output oltage oltage Code (MN) (MAX) TK716xx SCLH ELECTRCAL CHARACTERSTCS TABLE 2 Test Conditions: N = (TYP) + 1, = 5 ma, T A = 25 C, unless otherwise specified. Output oltage oltage Code (MN) (MAX) Output oltage oltage Code (MN) (MAX) December 1999 TOKO, nc. Page 3

4 TK716xx SL ELECTRCAL CHARACTERSTCS Test conditions: N = (TYP) + 1, T A = 25 C, unless otherwise specified. SYMBOL PARAMETER TEST CONDTONS MN TYP MAX UNTS Q STBY RE GND (PULSE) Quiescent Current Standby Current Reverse Bias Current = ma, Excluding ONT N 8, C 7 1 µ A = Output OFF. 2 µ A N, = RE = 5, Output OFF 1 7 na GND Pin Current = 5 ma 1 2. ma Continuous Output Current 15 ma P ulse Output Current 1 ms pulse, Duty Cycle = 4 % 2 ma Output oltage O UT / T Temperature Line Load DROP ref Reg Reg Line Regulation Load Regulation Dropout oltage N = + 1, = 5 ma See Table 3 O UT(TYP) Coefficient 2 ppm/ C N = (TYP) + 6 (TYP) 1 to Gen Note: Exceeding the Absolute Maximum Ratings may damage the device. Gen Note: Parameters with min. or max. values are 1% tested at T A = 25 C. Gen Note: Ripple rejection 6 db when f = 4 Hz, C L = 1 µf, C N =.1 µf, input noise = 1 mrms, N = (TYP) and = 3 ma. Gen Note: Output noise is.13 ~.23 µ/ Hz at 1 khz when C N =.1 µf m 1 ma < < 5 ma 4 2 m ma < < 1 ma 7 3 m 1 = 5 ma 9 16 m = 1 ma m = 15 ma 2 31 m Noise Bypass Terminal oltage 1.26 CONTROL TERMNAL SPECFCATONS CONT CONT(ON) CONT(OFF) Control Current O UT = 1.6, Output ON 1 µ A Control oltage ON Control oltage OFF Output ON 1. 8 Output OFF. 4 Page 4 December 1999 TOKO, nc.

5 TK716xx SL ELECTRCAL CHARACTERSTCS TABLE 3 Test Conditions: N = (TYP) + 1, = 5 ma, T A = 25 C, unless otherwise specified. Room Temp. Range (T A = 25 C) Full Temp. Range (T A = -4 to +85 C) Output oltage (MN) (MAX) (MN) (MAX) oltage Code December 1999 TOKO, nc. Page 5

6 OLTAGE AALABLTY TABLE 4 Output TK716xxSCL TK716xxASCL TK716xxSCLH TK716ASCLH TK716xxSL TK716xxASL oltage 1.3 X 1.4 X 1.5 X X 1.6 X 1.7 X 1.8 X X 1.9 X 2. X X X X 2.1 X X X X 2.2 X X X X 2.3 X X 2.4 X X X X X X 2.5 X X X X X X 2.6 X X X 2.7 X X X X X X 2.8 X X X X X X 2.9 X X X X X X 3. X X X X X X 3.1 X X X X X X 3.2 X X X X X X 3.3 X X X X X X 3.4 X X X 3.5 X X X X X X 3.6 X X X X X X 3.7 X X X 3.8 X X X X X X 3.9 X X X 4. X X X 4.1 X X X X X X 4.2 X X X X X X 4.3 X X X 4.4 X X X 4.5 X X X X X X 4.6 X X X 4.7 X X X X X X 4.8 X X X X X X 4.9 X X X X X X 5. X X X X X X 5.1 X X 5.2 X X 5.3 X X 5.4 X X Note: X denotes voltage presently available. Consult factory for availability of other voltages. Page 6 December 1999 TOKO, nc.

7 TEST CRCUT N CN = 1. µf GND CONT CL = 3.3 µf NOSE BYPASS CONT CONT CN =.1 µf TYPCAL PERFORMANCE CHARACTERSTCS LOAD REGULATON SHORT CRCUT PROTECTON PUT OLTAGE S. NPUT OLTAGE 5 TYPCAL (5 m/ D) TYPCAL () (2 m/ D) = ma = 25 ma = 15 ma 1 is changed by 25 ma step (ma) 15 3 (ma) N = N (5 M/D) (5 m/ D) LNE REGULATON TYPCAL DROP (m) DROP OLTAGE S. PUT CURRENT RLEAK (na) REERSE LEAKAGE CURRENT S. TEMPERATURE N, CONT FLOATNG = 5 SOURCE 1 2 N () (ma) December 1999 TOKO, nc. Page 7

8 TYPCAL PERFORMANCE CHARACTERSTCS (CONT.) E-3 REERSE BAS CURRENT ( N = ) E-3 REERSE BAS CURRENT S. TEMPERATURE ( N = ) RE (A) E-6 E-9 RE (A) E-6 E-9 E-12 E RE () STANDBY CURRENT S. NPUT OLTAGE QUESCENT CURRENT (ON MODE) S. NPUT OLTAGE E-7 2. = ma STBY (A) E-8 E-9 E-1 Q (ma) 1. = 3 = 4 = 5 E-11 E N () 1 2 N () CONTROL CURRENT (ON MODE) S. CONTROL PN OLTAGE GROUND CURRENT 5. = ma CONT (µa) 2.5 GND (ma) 4 2 = 9 ma = 6 ma = 3 ma CONT () Page 8 December 1999 TOKO, nc.

9 TYPCAL PERFORMANCE CHARACTERSTCS (CONT.) DROP OLTAGE CONTROL CURRENT DROP (m) = 15 ma 2 = 9 ma 15 = 6 ma 1 = 3 ma 5 = 1mA CONT (µa) CONT = 3.3 CONT = MAXMUM PUT CURRENT PUT OLTAGE TEMPERATURE COEFFCENT 34 1 (ma) / T (ppm) -1-2 = RR (db) RPPLE REJECTON =3 ma C L = 3.3 µf C N =.1 µf C L = 3.3 µf C N =.1 µf NOSE (µ/ HZ) PUT NOSE DENSTY C NP =.1 µf C NP =.1 µf = 3 ma C L = 2.2 µf C NP =.1 µf f (khz) 1 K 1 K 1 K f (Hz) December 1999 TOKO, nc. Page 9

10 TYPCAL PERFORMANCE CHARACTERSTCS (CONT.) NOSE LEEL S. C N PUT OLTAGE RESPONSE 1 (OFF ~ ON) NOSE (µ) C L = 2.2 µf C L = 1 µf C L = 3.3 µf CONT LOAD = 1 ma, C N = 1 pf C L = 2.2 µf C L = 4.7 µf C L = 3.3 µf 5 1 pf 1 pf 1 pf.1 µf 1 pf.1 µf C N TME (µs) C L = 1 µf CONT PUT OLTAGE RESPONSE 2 (OFF ~ ON) LOAD = 3 ma, C L = 3.3 µf TME (µs) C N = 1 pf C N =.1 µf C N =.1 µf (1 m/ D) LNE OLTAGE STEP RESPONSE C N =.1 µf, C L = 2.2 µf C N =.1 µf, C L = 2.2 µf TME (5 µs/ D) LNE OLTAGE STEP RESPONSE 2 +2 LOAD CURRENT STEP RESPONSE 1 +1 C N =.1 µf, C L = 2.2 µf (1 m/ D) C N =.1 µf, C L = 3.3 µf C N =.1 µf, C L = 1 µf (2 m/ D) = 3 to 6 ma = 5 to 35 ma = to 3 ma TME (5 µs/ D) TME (2.5 µs/ D) Page 1 December 1999 TOKO, nc.

11 TYPCAL PERFORMANCE CHARACTERSTCS (CONT.) (2 m/ D) LOAD CURRENT STEP RESPONSE 2 CN =.1 µf, CL = 2.2 µf = 35 to 5 ma = 6 to 3 ma = 3 to ma TME (2.5 µs/ D) CONT () CONTROL OLTAGE S. TEMPERATURE PUT ON PUT OFF SHORT CRCUT CURRENT S. NPUT OLTAGE 5. CONTROL CURRENT S. TEMPERATURE 3 4. CONT = 5. (ma) 2 CONT (µa) S CONNECTED TO GND 1. CONT = () TA ( C) 4 GROUND CURRENT S. PUT CURRENT DROP CHARACTERSTCS GND (ma) (.5 / D) = ma = 8 ma (ma) N = N (1 / D) December 1999 TOKO, nc. Page 11

12 TYPCAL PERFORMANCE CHARACTERSTCS (CONT.) 4 GROUND CURRENT S. NPUT SUPPLY OLTAGE ( = 3.6 ) 4 GROUND CURRENT S. TEMPERATURE 3 3 = 8 ma GND (ma) 2 = 5 ma GND (ma) 2 = 5 ma 1 1 = ma N () = ma NSTANTANEOUS SHORT CRCUT CURRENT S. TEMPERATURE N = +1 C L = 2.2 µf TANTALUM SC (ma) Page 12 December 1999 TOKO, nc.

13 DEFNTON AND EXPLANATON OF TECHNCAL TERMS PUT OLTAGE ( ) The output voltage is specified with N = ( (TYP) + 1 ) and = 5 ma. DROP OLTAGE ( DROP ) The dropout voltage is the difference between the input voltage and the output voltage at which point the regulator starts to fall out of regulation. Below this value, the output voltage will fall as the input voltage is reduced. t is dependent upon the load current and the junction temperature. CONTNUOUS PUT CURRENT ( ) Normal operating output current. This is limited by package power dissipation. PULSE PUT CURRENT ( (PULSE) ) Maximum pulse width 1 ms; duty cycle is 4%: pulse load only. LNE REGULATON (Line Reg) Line regulation is the ability of the regulator to maintain a constant output voltage as the input voltage changes. The line regulation is specified as the input voltage is changed from N = + 1 to N = + 6. LOAD REGULATON (Load Reg) Load regulation is the ability of the regulator to maintain a constant output voltage as the load current changes. t is a pulsed measurement to minimize temperature effects with the input voltage set to N = +1. The load regulation is specified under three output current step conditions of 1 ma to 5 ma, 1 ma to 1 ma and 1 ma to 15 ma. QUESCENT CURRENT ( Q ) The quiescent current is the current which flows through the ground terminal under no load conditions ( = ma). GROUND CURRENT ( GND ) RPPLE REJECTON RATO (RR) Ripple rejection is the ability of the regulator to attenuate the ripple content of the input voltage at the output. t is specified with 1 mrms, 4 Hz superimposed on the input voltage, where N = The output decoupling capacitor is set to 1 µf, the noise bypass capacitor is set to.1 µf, and the load current is set to 3 ma. Ripple rejection is the ratio of the ripple content of the output vs. the input and is expressed in db. STANDBY CURRENT ( STBY ) Standby current is the current which flows into the regulator when the output is turned off by the control function ( CONT = ). t is measured with N = 8. SENSOR CRCUTS Overcurrent Sensor The overcurrent sensor protects the device if the output is shorted to ground. Thermal Sensor The thermal sensor protects the device if the junction temperature exceeds the safe value (T j = 15 C). This temperature rise can be caused by extreme heat, excessive power dissipation caused by large output voltage drops, or excessive output current. The regulator will shut off when the temperature exceeds the safe value. As the junction temperature decreases, the regulator will begin to operate again. Under sustained fault conditions, the regulator output will oscillate as the device turns off then resets. Damage may occur to the device under extreme fault conditions. Reverse oltage Protection Reverse voltage protection prevents damage due to the output voltage being higher than the input voltage. This fault condition can occur when the output capacitor remains charged and the input is reduced to zero, or when an external voltage higher than the input voltage is applied to the output side. Ground Current is the current which flows through the ground pin(s). t is defined as N -, excluding control current. December 1999 TOKO, nc. Page 13

14 DEFNTON AND EXPLANATON OF TECHNCAL TERMS (CONT.) PACKAGE POWER DSSPATON (P D ) This is the power dissipation level at which the thermal sensor is activated. The C contains an internal thermal sensor which monitors the junction temperature. When the junction temperature exceeds the monitor threshold of 15 C, the C is shut down. The junction temperature rises as the difference between the input power ( N x N ) and the output power ( x ) increases. The rate of temperature rise is greatly affected by the mounting pad configuration on the PCB, the board material, and the ambient temperature. When the C mounting has good thermal conductivity, the junction temperature will be low even if the power dissipation is great. When mounted on the recommended mounting pad, the power dissipation of the SOT23-5 is increased to 5 mw. For operation at ambient temperatures over 25 C, the power dissipation of the SOT23-5 device should be derated at 4. mw/ C. To determine the power dissipation for shutdown when mounted, attach the device on the actual PCB and deliberately increase the output current (or raise the input voltage) until the thermal protection circuit is activated. Calculate the power dissipation of the device by subtracting the output power from the input power. These measurements should allow for the ambient temperature of the PCB. The value obtained from P D /(15 C - T A ) is the derating factor. The PCB mounting pad should provide maximum thermal conductivity in order to maintain low device temperatures. As a general rule, the lower the temperature, the better the reliability of the device. The thermal resistance when mounted is expressed as follows: The range of usable currents can also be found from the graph below. P D D PD (mw) Procedure: ) Find P D 2) P D1 is taken to be P D x (~.8 -.9) 3) Plot P D1 against 25 C 4) Connect P D1 to the point corresponding to the 15 C with a straight line. 5) n design, take a vertical line from the maximum operating temperature (e.g., 75 C) to the derating curve. 6) Read off the value of P D against the point at which the vertical line intersects the derating curve. This is taken as the maximum power dissipation, D PD. The maximum operating current is: = (D PD / ( N(MAX) - ) 5 4 T j = ja x P D + T A For Toko Cs, the internal limit for junction temperature is 15 C. f the ambient temperature (T A ) is 25 C, then: 15 C = ja x P D + 25 C ja = 125 C / P D P D (mw) FREE AR MOUNTED AS SHOWN P D is the value when the thermal protection circuit is activated. A simple way to determine P D is to calculate N x N when the output side is shorted. nput current gradually falls as temperature rises. You should use the value when thermal equilibrium is reached. Page SOT23-5 POWER DSSPATON CURE December 1999 TOKO, nc.

15 APPLCATON NFORMATON NPUT-PUT CAPACTORS Linear regulators require input and output capacitors in order to maintain regulator loop stability. The equivalent series resistance (ESR) of the output capacitor must be in the stable operation area. Since the ESR varies widely between ceramic and tantalum capacitors, the proper C must be selected according to the output capacitor used: The TK716xxS is designed for use with ceramic output capacitors. (Chip tantalum capacitors and electrolytic capacitors with an ESR below 6 Ω can provide stable operation.) The TK716xxAS is designed for use with tantalum output capacitors. The DC electrical characteristics and the specifications of the TK716xxS and TK716xxAS are the same; only the value of the internal phase compensation is different. ncreasing the value of the required output capacitor does not cause abnormal operation. ncreasing the value can improve noise reduction, line regulation, load regulation, and stability. For stable operation, an input capacitor of.22 µf or more is required. Note: it is very important to check the selected manufacturers electrical characteristics. The values of capacitance and ESR vary from manufacturer to manufacturer, and with product type. A thorough examination is necessary to determine the characteristics of the capacitor in mass production. The characteristics also vary over temperature. n general, it is recommended to use as large a value of output capacitance as is practical. Please refer to the following graphs for output capacitor selection. Output side capacitor C L = 2.2 µf 1 TK7163S 1 TK7163AS 1 1 ESR (Ω) 1 Stable area ESR (Ω) 1 Stable area µf (ma) (ma) December 1999 TOKO, nc. Page 15

16 APPLCATON NFORMATON (CONT.) The value of ESR between ceramic and tantalum capacitors differs by about two orders of magnitude as illustrated below. The characteristics of tantalum capacitors also vary widely according to manufacturer. The output capacitor becomes a part of the phase compensation in a LDO regulator using a PNP pass transistor. Because of this, it is necessary to optimize the phase compensation in the C for use with ceramic or tantalum capacitors. 1 ESR vs. TEMPERATURE at 1 khz ESR (Ω) 1.1 Tantalum Cap Ceramic Cap TEMPERATURE ( C) BOARD LAY GND + + CONTROL NOSE BYPASS SOT23-5 BOARD LAY Page 16 December 1999 TOKO, nc.

17 APPLCATON NFORMATON (CONT.) REERSE BAS PROTECTON The internal reverse bias protection eliminates the requirement for a reverse voltage protection diode. This saves both cost and board space. The high output voltage accuracy and low dropout voltage are maintained when the C is turned ON/OFF by using the control pin as illustrated below. TK716xxS µ PRO CONT TK716xxS GND GND Another reverse bias protection technique is illustrated below. The extra diode and extra capacitor are not necessary with the TK716xx. The high output voltage accuracy is maintained because the diode forward voltage variations over temperature and load current have been eliminated. High-side switching with a FET is illustrated below. Battery life is extended by the dropout voltage of the FET when the input of the TK716xx is connected in front of the FET switch. 716xx FET SWTCHNG PUT CONT TK716xxS OLTAGE BACKUP OPERATON (HOLDUP TME) HGH-SDE SWTCHNG High-side switching should not be implemented by an external transistor as shown below. This results in additional voltage drop and loss of accuracy. C L becomes the backup power supply when the microprocessor is reset with the voltage detector C simultaneously with the turning OFF the TK716xx. C L provides the holdup time necessary to do an orderly shutdown of the microprocessor. DROP OLTAGE DETECTOR C TK716xxS µ PRO OLTAGE REGULATOR CONT OFF GND CL RESET ON/OFF CONTROL December 1999 TOKO, nc. Page 17

18 PARALLEL ON/OFF CONTROL APPLCATON NFORMATON (CONT.) The figure below illustrates multiple regulators being controlled by a single ON/OFF control signal. The series resistor R is put in the input line of the low output voltage regulator in order to prevent overdissipation. The voltage dropped across the resistor reduces the large input-tooutput voltage across the regulator, reducing the power dissipation in the device. ON/OFF LOGC TK716xx CMOS REGULATOR TK CURRENT BOOST OPERATON R ON/OFF CONTROL TK7163 TK The output current can be increased by connecting an external PNP transistor as shown below. The output current capability depends upon the H fe of the external transistor. Note: The TK716xx internal short circuit protection and thermal sensor do not protect the external transistor. SWTCHNG OPERATON Even though the input voltages or the output voltages are different, the outputs of the TK716xx regulators can be connected together, and the output voltages switched. f two or more TK716xx regulators are turned ON simultaneously, the highest output voltage will be present. 15 Ω.22 µf CONT TK716xx CONT TK7163 TK OR 2.8 CONT ON/OFF LOGC The outputs of the TK716xx regulator and a CMOS regulator can be connected together as long as the output voltage of the TK716xx is greater than the CMOS regulator. When the TK716xx is OFF, the CMOS regulator is turned ON. When the TK716xx is ON, the CMOS regulator is turned OFF. Page 18 December 1999 TOKO, nc.

19 NOTES December 1999 TOKO, nc. Page 19

20 PACKAGE LNE SOT e e Marking max Dimensions are shown in millimeters Tolerance: x.x = ±.2 mm (unless otherwise specified) (.6) 1.6 (.6) (.8) M.7 e e e' 1.9 Recommended Mount Pad ± e1-15 max Marking nformation Part Number TK716xxS TK716xxAS Marking Marking TK71613 L13 13L TK71614 L14 14L TK71615 L15 15L TK71616 L16 16L TK71617 L17 17L TK71618 L18 18L TK71619 L19 19L TK7162 L2 2L TK71621 L21 21L TK71622 L22 22L TK71623 L23 23L TK71624 L24 24L TK71625 L25 25L TK71626 L26 26L TK71627 L27 27L TK71628 L28 28L TK71629 L29 29L TK7163 L3 3L TK71631 L31 31L TK71632 L32 32L TK71633 L33 33L TK71634 L34 34L TK71635 L35 35L TK71636 L36 36L TK71637 L37 37L TK71638 L38 38L TK71639 L39 39L TK7164 L4 4L TK71641 L41 41L TK71642 L42 42L TK71643 L43 43L TK71644 L44 44L TK71645 L45 45L TK71646 L46 46L TK71647 L47 47L TK71648 L48 48L TK71649 L49 49L TK7165 L5 5L TK71651 L51 51L TK71652 L52 52L TK71653 L53 53L TK71654 L54 54L Check Table 4 for availability. Toko America, nc. Headquarters 125 Feehanville Drive, Mount Prospect, llinois 656 Tel: (847) Fax: (847) TOKO AMERCA REGONAL OFFCES Midwest Regional Office Toko America, nc. 125 Feehanville Drive Mount Prospect, L 656 Tel: (847) Fax: (847) Western Regional Office Toko America, nc. 248 North First Street, Suite 26 San Jose, CA Tel: (48) Fax: (48) Eastern Regional Office Toko America, nc. 17 Mill Plain Road Danbury, CT 6811 Tel: (23) Fax: (23) Semiconductor Technical Support Toko Design Center 4755 Forge Road Colorado Springs, CO 897 Tel: (719) Fax: (719) isit our nternet site at The information furnished by TOKO, nc. 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, nc. Page Toko, nc. All Rights Reserved C-216-TK716xx 798O.K December 1999 TOKO, nc. Printed in the USA