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TK715xx
LOW DROPOUT VOLTAGE REGULATOR FEATURES
s s s s s s s High Voltage Precision at 2.0% or 60 mV Very Low Quiescent Current Very Low Dropout Voltage Reverse Bias Protection Miniature Package (SOT-23-3) Short Circuit Protection High Ripple Rejection
APPLICATIONS
s s s s s s s s s Battery Powered Systems Cellular Telephones Pagers Personal Communications Equipment Portable Instrumentation Portable Consumer Equipment Radio Control Systems Toys Low Voltage Systems
DESCRIPTION
The TK715xx is a low dropout linear regulator housed in a small SOT-23-3 package, rated at 350 mW. An internal PNP transistor is used to achieve a low dropout voltage of 105 mV (typ.) at 50 mA load current. This device offers high precision output voltage of 2.0 % or 60 mV. The TK715xx has a very low quiescent current of 25 A (typ.) at no load. The low quiescent current and dropout voltage make this part ideal for battery powered applications. The internal reverse bias protection eliminates the requirement for a reverse voltage protection diode, saving cost and board space. The high 64 dB ripple rejection and low noise provide enhanced performance for critical applications.
TK715xxS
VIN
20 P
GND
VOUT
ORDERING INFORMATION
TK715
Voltage Code
SCL
Tape/ Reel Code Temp. Code Package Code
VIN
BLOCK DIAGRAM
VOUT THERMAL PROTECTION
VOLTAGE CODE
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 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 60 = 6.0 V 70 = 7.0 V 80 = 8.0 V 90 = 9.0 V
TEMPERATURE CODE
C -30 to +80 C
TAPE/REEL CODE
L: Tape Left
PACKAGE CODE
S : SOT-23-3
+ +
BANDGAP REFERENCE
GND
January 1999 TOKO, Inc.
Page 1
TK715xx
ABSOLUTE MAXIMUM RATINGS (VOUT 5.0 V)
Supply Voltage .............................................. -0.4 to 16 V Power Dissipation (Note 1) ................................ 350 mW Reverse Bias .............................................................. 8 V Storage Temperature (Ambient) ............... -55 to +150 C Operating Temperature (Ambient) .............. -30 to +80 C Max. Operating Temperature (Junction) ............... 125 C Operating Voltage Range ............................ 1.8 to 14.0 V Junction Temperature ........................................... 150 C Lead Soldering Temperature (10 s) ...................... 235 C
TK715xx ELECTRICAL CHARACTERISTICS (VOUT 5.0 V)
Test conditions: TA = 25 C, unless otherwise specified.
SYMBOL IQ IGND VOUT Line Reg PARAMETER Quiescent Current Ground Current Output Voltage Line Regulation TEST CONDITIONS IOUT = 0 mA, VOUT 4.0 V IOUT = 0 mA, VOUT 4.1 V IOUT = 50 mA IOUT = 10 mA VIN = VOUT(TYP) + 1 V to VOUT(TYP) + 6 V IOUT = 5 to 50 mA, (Note 2) IOUT = 5 to 100 mA, (Note 2) IOUT = 50 mA VDROP Dropout Voltage IOUT = 100 mA, VOUT 2.4 V IOUT = 100 mA, VOUT < 2.4 V IOUT RR VOUT / T Continuous Output Current Ripple Rejection Temperature Coefficient (Notes 3,4) IOUT = 10 mA 64 35 MIN TYP 25 30 1.4 See Table 1 1.0 10 20 0.105 0.185 0.185 10 30 50 .0180 0.280 0.330 100 MAX 45 50 2.5 UNITS A A mA V mV mV mV V V V mA dB ppm/ C
Load Reg
Load Regulation
Note 1: Power dissipation is 350 mW when mounted as recommended. Derate at 2.8 mW/C for operation above 25 C. Note 2: Refer to "Definition of Terms." Note 3: Ripple rejection and noise voltage are affected by the value and characteristics of the capacitor used. Note 4: Ripple rejection is measured at VR = 200 mVrms, VIN = VOUT(TYP) + 2 V, IOUT = 10 mA, CL = 4.7 F, f = 100 Hz. Gen. Note: Parameters with min. or max. values are 100% tested at TA = 25 C.
Page 2
January 1999 TOKO, Inc.
TK715xx
ABSOLUTE MAXIMUM RATINGS (VOUT 6.0 V)
Supply Voltage .............................................. -0.4 to 16 V Power Dissipation (Note 1) ................................ 350 mW Reverse Bias .............................................................. 8 V Storage Temperature (Ambient) ............... -55 to +150 C Operating Temperature (Ambient) ..............-30 to +80 C Max. Operating Temperature (Junction) ............... 125 C Operating Voltage Range ............................ 2.5 to 14.0 V Junction Temperature ........................................... 150 C Lead Soldering Temperature (10 s) ...................... 235 C
TK715xx ELECTRICAL CHARACTERISTICS (VOUT 6.0 V)
Test conditions: TA = 25 C, unless otherwise specified.
SYMBOL IQ IGND VOUT L in e R e g PARAMETER Quiescent Current Ground Current Output Voltage Line Regulation TEST CONDITIONS IOUT = 0 mA IOUT = 50 mA IOUT = 10 mA VIN = VOUT(TYP) + 1 V to VOUT(TYP) + 6 V or Max 14 V IOUT = 5 to 50 mA, (Note 2) IOUT = 5 to 100 mA, (Note 2) VDROP IOUT RR VOUT / T Dropout Voltage Continuous Output Current Ripple Rejection Temperature Coefficient (Notes 3,4) IOUT = 10 mA 64 35 IOUT = 50 mA IOUT = 100 mA MIN TYP 32 1. 4 See Table 1 3.0 10 20 0.105 0.185 30 50 .0180 0.280 100 MAX 60 2.5 UNITS A mA V mV mV mV V V mA dB ppm/ C
Load Reg
Load Regulation
Note 1: Power dissipation is 350 mW when mounted as recommended. Derate at 2.8 mW/C for operation above 25 C. Note 2: Refer to "Definition of Terms." Note 3: Ripple rejection and noise voltage are affected by the value and characteristics of the capacitor used. Note 4: Ripple rejection is measured at VR = 200 mVrms, VIN = VOUT(TYP) + 2 V, IOUT = 10 mA, CL = 4.7 F, f = 100 Hz. Gen. Note: Parameters with min. or max. values are 100% tested at TA = 25 C.
January 1999 TOKO, Inc.
Page 3
TK715xx
TK715xx ELECTRICAL CHARACTERISTICS TABLE 1
Output Voltage 1.9 V 2.0 V 2.1 V 2.2 V 2.3 V 2.4 V 2.5 V 2.6 V 2.7 V 2.8 V 2.9 V 3.0 V 3.1 V 3.2 V 3.3 V 3.4 V 3.5 V 3.6 V Voltage Code 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 VOUT(MIN) 1.840 V 1.940 V 2.040 V 2.140 V 2.240 V 2.340 V 2.440 V 2.540 V 2.640 V 2.740 V 2.840 V 2.940 V 3.040 V 3.140 V 3.240 V 3.335 V 3.435 V 3.535 V VOUT(MAX) 1.960 V 2.060 V 2.160 V 2.260 V 2.360 V 2.460 V 2.560 V 2.660 V 2.760 V 2.860 V 2.960 V 3.060 V 3.160 V 3.260 V 3.360 V 3.465 V 3.565 V 3.665 V Test Voltage 2.9 V 3.0 V 3.1 V 3.2 V 3.3 V 3.4 V 3.5 V 3.6 V 3.7 V 3.8 V 3.9 V 4.0 V 4.1 V 4.2 V 4.3 V 4.4 V 4.5 V 4.6 V Output Voltage 3.7 V 3.8 V 3.9 V 4.0 V 4.1 V 4.2 V 4.3 V 4.4 V 4.5 V 4.6 V 4.7 V 4.8 V 4.9 V 5.0 V 6.0 V 7.0 V 8.0 V 9.0 V Voltage Code 37 38 39 40 41 42 43 44 45 46 47 48 49 50 60 70 80 90 VOUT(MIN) 3.630 V 3.725 V 3.825 V 3.920 V 4.020 V 4.120 V 4.215 V 4.315 V 4.410 V 4.510 V 4.605 V 4.705 V 4.800 V 4.900 V 5.880 V 6.860 V 7.840 V 8.820 V VOUT(MAX) 3.770 V 3.875 V 3.975 V 4.080 V 4.180 V 4.280 V 4.385 V 4.485 V 4.590 V 4.690 V 4.795 V 4.895 V 5.000 V 5.100 V 6.120 V 7.140 V 8.160 V 9.180 V Test Voltage 4.7 V 4.8 V 4.9 V 5.0 V 5.1 V 5.2 V 5.3 V 5.4 V 5.5 V 5.6 V 5.7 V 5.8 V 5.9 V 6.0 V 7.0 V 8.0 V 9.0 V 9.0 V
Page 4
January 1999 TOKO, Inc.
TK715xx
TEST CIRCUIT
IIN VIN + _ + CIN 0.1 F VIN VOUT VOUT CL 2.2 F IOUT
+
GND
TYPICAL PERFORMANCE CHARACTERISTICS
TA = 25 C, unless otherwise specified.
LOAD REGULATION 5 VOUT (25 mV/ DIV) SHORT CIRCUIT PROTECTION
OUTPUT VOLTAGE VS. INPUT VOLTAGE VOUT TYPICAL
IOUT = 0 mA IOUT = 30 mA IOUT = 60 mA
VOUT (5 mV/ DIV)
VOUT TYPICAL
4
VOUT (V)
3 2 1 0
IOUT = 90 mA
0
50 IOUT (mA)
100
0
100 IOUT (mA)
200
0
VIN = VOUT VIN (V) (50 mV/DIV) QUIESCENT CURRENT VS. INPUT VOLTAGE
LINE REGULATION VOUT TYPICAL
VOUT (50 mV/ DIV)
REVERSE BIAS CURRENT RANGE (VIN = 0 V) 100 80 IREV (A) 60 40 20 0 0 5 VREV (V) VOUT = 8.0 V 10 0 0 IQ (mA) VOUT = 2.0 V 2
IOUT = 0 mA
1
VOUT = 3 V
0
10 VIN (V)
20
5 VIN (V)
10
January 1999 TOKO, Inc.
Page 5
TK715xx
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
TA = 25 C, unless otherwise specified.
OUTPUT CURRENT VS. DROPOUT VOLTAGE 0 500 400
IGND (A)
GROUND CURRENT 1 VS. OUTPUT CURRENT 5 4 IGND (mA) 3 2 1 0 0 5 10 15 20 25 0
GROUND CURRENT 2 VS. OUTPUT CURRENT
VDROP (mV)
300 200 100
-100
-200 0 50 IOUT (mA) MAXIMUM OUTPUT CURRENT VS. TEMPERATURE 220 VOUT IS 2.7 V OR MORE 200
VOUT (mV) IOUT (mA)
100
0 IOUT (mA)
OUTPUT VOLTAGE VS. TEMPERATURE 20 10 3.0 V 0 -10 -20 -30 -50 2.9 V
20
40
60
80
100
IOUT (mA) NOISE LEVEL VS. OUTPUT CURRENT 200 180 NOISE (V) 160 140 120 100 CIN =10 F BW = 10 Hz to 80 kHz 0 50 IOUT (mA) 100 CL = 1 F 2.2 F 3.3 F 4.7 F 10 F
180 160 150
-50
0 TA (C)
50
100
0 TA (C)
50
100
NOISE LEVEL VS. CL
RIPPLE REJECTION 0 IOUT = 10 mA -20
VIN 715xx VOUT
200 180
CIN =10 F BW = 10 Hz to 80 kHz IOUT = 5 mA 10 mA 30 mA 60 mA 90 mA
NOISE (V)
160 140 120 100 1.0
RR (dB)
-40
CIN 0.1 to 1 F CL 4.7 F
-60 -80 -100 0.01 CL = 4.7 F
RIPPLE REJECTION CIRCUIT
5.0 CL (F)
10
0.1 f (kHz)
1
10
Page 6
January 1999 TOKO, Inc.
TK715xx
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
TA = 25 C, unless otherwise specified.
LOAD CURRENT STEP RESPONSE 2 VOUT2 VOUT1 IOUT CL =4.7 F VIN VOUT (10 mV/ DIV)
LINE VOLTAGE STEP RESPONSE
VOUT + 2 V
NOISE SPECTRUM RB = 1 kHz, VB = 100 Hz
VOUT (20 mV/ DIV)
IOUT = 0 to 100 mA
VOUT + 1 V
CL = 4.7 F, IOUT = 60 mA CL = 4.7 F, IOUT = 5 mA
IOUT = 0 to 30 mA
VOUT
CL = 4.7 F
dB
-50
SPECTRUM ANALYZER BACKGROUND NOISE
IOUT = 10 mA
-100
NOTE: VOUT2 DELAYED 50 s FOR CLARITY
0 TIME (50 s/ DIV)
500 k f (kHz)
1M
TIME (50 s/ DIV)
LOAD CURRENT STEP RESPONSE 1 IOUT CL =4.7 F
VOUT (20 mV/ DIV)
VOUT2
VOUT1
IOUT = 5 to 100 mA
IOUT = 5 to 30 mA
NOTE: VOUT2 DELAYED 50 s FOR CLARITY
TIME (50 s/ DIV)
January 1999 TOKO, Inc.
Page 7
TK715xx
DEFINITION AND EXPLANATION OF TECHNICAL TERMS
OUTPUT VOLTAGE (VOUT) The output voltage is specified with VIN = (VOUT(TYP) + 1 V) and IOUT = 30 mA. DROPOUT VOLTAGE (VDROP) 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. It is dependent upon the load current and the junction temperature. CONTINUOUS OUTPUT CURRENT (IOUT) Normal operating output current. This is limited by package power dissipation. PULSE OUTPUT CURRENT (IOUT(PULSE)) Maximum pulse width 5 ms at VOUT above 2.0 V, duty cycle 12.5%: pulse load only. LINE REGULATION (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 VIN = VOUT(TYP) + 1 V to VIN = VOUT(TYP) + 6 V or VIN = max 14 V. LOAD REGULATION (Load Reg) Load regulation is the ability of the regulator to maintain a constant output voltage as the load current changes. It is a pulsed measurement to minimize temperature effects with the input voltage set to VIN = VOUT(TYP) +1 V. The load regulation is specified under two output current step conditions of 1 mA to 60 mA and 1 mA to 100 mA. QUIESCENT CURRENT (IQ) The quiescent current is the current which flows through the ground terminal under no load conditions (IOUT = 0 mA). GROUND CURRENT (IGND) Ground current is the current which flows through the ground pin(s). It is defined as IIN - IOUT, excluding control Page 8 current. RIPPLE REJECTION RATIO (RR) Ripple rejection is the ability of the regulator to attenuate the ripple content of the input voltage at the output. It is specified with 200 mVrms, 100 Hz superimposed on the input voltage, where VIN = VOUT(TYP) + 2.0 V. The output decoupling capacitor is set to 4.7 F and the load current is set to 5 mA. Ripple rejection is the ratio of the ripple content of the output vs. the input and is expressed in dB. REVERSE VOLTAGE 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. REDUCTION OF OUTPUT NOISE Although the architecture of the Toko regulators are designed to minimize semiconductor noise, further reduction can be achieved by the selection of external components. The obvious solution is to increase the size of the output capacitor. Please note that several parameters are affected by the value of the capacitors and bench testing is recommended when deviating from standard values. PACKAGE POWER DISSIPATION (PD) This is the power dissipation level at which the thermal sensor is activated. The IC contains an internal thermal sensor which monitors the junction temperature. When the junction temperature exceeds the monitor threshold of 150 C, the IC is shut down. The junction temperature rises as the difference between the input power (VIN x IIN) and the output power (VOUT x IOUT) 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 IC 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 SOT-23-3 is increased to 350 mW. For operation at ambient temperatures over 25 C, the power dissipation of the SOT-23-3 device should be derated at 2.8 mW/C. To January 1999 TOKO, Inc.
TK715xx
DEFINITION AND EXPLANATION OF TECHNICAL TERMS (CONT.)
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 PD /(150 C - TA) 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: 3) Plot PD1 against 25 C 4) Connect PD1 to the point corresponding to the 150 C with a straight line. 5) In design, take a vertical line from the maximum operating temperature (e.g., 75 C) to the derating curve. 6) Read off the value of PD against the point at which the vertical line intersects the derating curve. This is taken as the maximum power dissipation, DPD. The maximum operating current is: IOUT = (DPD / (VIN(MAX) - VOUT) Tj = 0jA x PD + TA
500
For Toko ICs, the internal limit for junction temperature is 150 C. If the ambient temperature (TA) is 25 C, then:
PD (mW)
400 300
MOUNTED AS SHOWN
150 C = 0jA x PD + 25 C 0jA = 125 C/ PD PD is the value when the thermal sensor is activated. A simple way to determine PD is to calculate VIN x IIN when the output side is shorted. Input current gradually falls as temperature rises. You should use the value when thermal equilibrium is reached. The range of usable currents can also be found from the graph below.
(mW) PD 3
FREE AIR 200 100 0 0 50 TA (C) 100 150
SOT-23-3 POWER DISSIPATION CURVE
DPD
6 4 5
25
50
75 TA (C)
150
Procedure: 1) Find PD 2) PD1 is taken to be PD x (~ 0.8 - 0.9) January 1999 TOKO, Inc. Page 9
TK715xx
APPLICATION INFORMATION
INPUT-OUTPUT CAPACITORS Linear regulators require input and output capacitors in order to maintain regulator loop stability. The output capacitor should be selected within the Equivalent Series Resistance (ESR) range as shown in the graphs below for stable operation. When a ceramic capacitor is connected in parallel with the output capacitor, a maximum of 1000 pF is recommended. This is because the ceramic capacitor's electrical characteristics (capacitance and ESR) vary widely over temperature. If a large ceramic capacitor is used, a resistor should be connected in series with it to bring it into the stable operating area shown in the graphs below. Minimum resistance should be added to maintain load and line transient response. Note: It is very important to check the selected manufacturers electrical characteristics (capacitance and ESR) over temperature.
715xxS CL ESR
TK715xxS CL ESR
Note: It is not necessary to connect a ceramic capacitor in parallel with an aluminum or tantalum output capacitor.
CL = 1.0 F
100 100
CL = 2.2 F
100
CL = 4.7 F
10
10
10
ESR ()
ESR ()
ESR ()
1
STABLE OPERATION AREA
1
STABLE OPERATION AREA
1
STABLE OPERATION AREA
0.1
0.1
0.1
0 .01 0 50 IOUT (mA) 100
0 .01 0 50 IOUT (mA) 100
0 .01 0 50 IOUT (mA) 100
Page 10
January 1999 TOKO, Inc.
TK715xx
APPLICATION INFORMATION (CONT.)
In general, the capacitor should be at least 1 F and be rated for the actual ambient operating temperature range. The table below shows typical characteristics for several types and values of capacitance. Please note that the ESR varies widely depending upon manufacturer, type, size, and material.
ESR Capacitance 1.0 F 2.2 F 3.3 F 10 F
Aluminum Capacitor 2.4 2.0 4.6 1.4
Tantalum Capacitor 2.3 1.9 1.0 0.5
Ceramic Capacitor 0.140 0.059 0.049 0.025
Note: ESR is measured at 10 kHz.
BOARD LAYOUT Copper pattern should be as large as possible. Power dissipation is 350 mW for SOT-23-3. A low ESR capacitor is recommended. For low temperature operation, select a capacitor with a low ESR at the lowest operating temperature to prevent oscillation, degradation of ripple rejection and increase in noise. The minimum recommended capacitance is 2.2 F. The internal reverse bias protection eliminates the requirement for a reverse voltage protection diode. This saves both cost and board space.
VIN
GND
VOUT
+
+
SOT-23-3 BOARD LAYOUT
January 1999 TOKO, Inc.
Page 11
TK715xx
APPLICATION INFORMATION (CONT.)
REVERSE BIAS PROTECTION The internal reverse bias protection eliminates the requirement for a reverse voltage protection diode. This saves both cost and board space. SWITCHING OPERATION Even though the input voltages or the output voltages are different, the outputs of the TK715xx regulators can be connected together, and the output voltages switched. If two or more TK715xx regulators are turned ON simultaneously, the highest output voltage will be present.
VIN 715xxS
VOUT
VIN
TK71530
GND
VIN TK71528 VOUT 3.0 OR 2.8 V
Another reverse bias protection technique is illustrated below. The extra diode and extra capacitor are not necessary with the TK715xx. The high output voltage accuracy is maintained because the diode forward voltage variations over temperature and load current have been eliminated.
CURRENT BOOST OPERATION The output current can be increased by connecting an external PNP transistor as shown below. The output current capability depends upon the Hfe of the external transistor. Note: The TK715xx internal short circuit protection and thermal sensor do not protect the external transistor.
VIN TK715xxS
VOUT
VIN
PARALLEL OPERATION 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-to-output voltage across the regulator, reducing the power dissipation in the device.
VIN 150 0.22 F TK715xx VOUT 3.3 F
VIN TK71550 5V
3V TK71530 R 2V
TK71520
Page 12
January 1999 TOKO, Inc.
TK715xx
PACKAGE OUTLINE
Marking Information
0.7
SOT-23-3
Product Code
T Voltage Code 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 60 70 80 90
1.0
3 Marking
Product Code Voltage Code
e 0.95
e 0.95
e1 1.90
+ 0.1
Recommended Mounting Pad 0.1 C1
0.4 1 e 0.95 e 0.95
2
(0.3)
2.9
1.6
0.15
0.1
(0.4) 2.8
+ 0.3
Dimensions are shown in millimeters Tolerance: x.x = 0.2 mm (unless otherwise specified)
TK71519S TK71520S TK71521S TK71522S TK71523S TK71524S TK71525S TK71526S TK71527S TK71528S TK71529S TK71530S TK71531S TK71532S TK71533S TK71534S TK71535S TK71536S TK71537S TK71538S TK71539S TK71540S TK71541S TK71542S TK71543S TK71544S TK71545S TK71546S TK71547S TK71548S TK71549S TK71550S TK71560S TK71570S TK71580S TK71590S
e1
2.4
1.4 max
1.1
0 - 0.1
Toko America, Inc. Headquarters 1250 Feehanville Drive, Mount Prospect, Illinois 60056 Tel: (847) 297-0070 Fax: (847) 699-7864
TOKO AMERICA REGIONAL OFFICES
Midwest Regional Office Toko America, Inc. 1250 Feehanville Drive Mount Prospect, IL 60056 Tel: (847) 297-0070 Fax: (847) 699-7864 Western Regional Office Toko America, Inc. 2480 North First Street , Suite 260 San Jose, CA 95131 Tel: (408) 432-8281 Fax: (408) 943-9790 Eastern Regional Office Toko America, Inc. 107 Mill Plain Road Danbury, CT 06811 Tel: (203) 748-6871 Fax: (203) 797-1223 Semiconductor Technical Support Toko Design Center 4755 Forge Road Colorado Springs, CO 80907 Tel: (719) 528-2200 Fax: (719) 528-2375
Visit our Internet site at http://www.tokoam.com
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.
January 1999 TOKO, Inc.
(c) 1999 Toko, Inc. All Rights Reserved IC-xxx-TK715xx 0798O0.0K
+ 0.1
15
max.
Page 13
Printed in the USA

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