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NCV8506 Series Micropower 400 mA LDO Linear Regulators with DELAY and RESET
The NCV8506 is a family of precision micropower voltage regulators. Their output current capability is 400 mA. The family has output voltage options for Adjustable, 2.5 V, 3.3 V and 5.0 V. The output voltage is accurate within 2.0% with a maximum dropout voltage of 0.6 V at 400 mA. Low quiescent current is a feature drawing only 100 mA with a 100 mA load. This part is ideal for any and all battery operated microprocessor equipment. Microprocessor control logic includes an active RESET (with DELAY). The active RESET circuit operates correctly at an output voltage as low as 1.0 V. The RESET function is activated during the power up sequence or during normal operation if the output voltage drops below the regulation limits. The regulator is protected against reverse battery, short circuit, and thermal overload conditions. The device can withstand load dump transients making it suitable for use in automotive environments. The device has also been optimized for EMC conditions.
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1
D2PAK-7 DPS SUFFIX CASE 936AB
NC V8506x AWLYWWG 1
* * * * * * *
* *
Output Voltage Options: Adjustable, 2.5 V, 3.3 V, 5.0 V 2.0% Output Low 100 mA Quiescent Current Fixed or Adjustable Output Voltage Active RESET 400 mA Output Current Capability Fault Protection +60 V Peak Transient Voltage -15 V Reverse Voltage Short Circuit Thermal Overload Pb-Free Packages are Available NCV Prefix for Automotive and Other Applications Requiring Site and Change Control
= Voltage Ratings as Indicated Below: A = Adjustable 2 = 2.5 V 3 = 3.3 V 5 = 5.0 V A = Assembly Location WL = Wafer Lot Y = Year WW = Work Week G = Pb-Free Package
x
ORDERING INFORMATION
See detailed ordering and shipping information in the package dimensions section on page 11 of this data sheet.
(c) Semiconductor Components Industries, LLC, 2007
February, 2007 - Rev. 7
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Publication Order Number: NCV8506/D
NCV8506 Series
PIN CONNECTIONS ADJUSTABLE OUTPUT
D2PAK-7 Tab = GND Lead 1. DELAY 2. NC 3. RESET 4. GND 5. VADJ 6. VOUT 7. VIN
FIXED OUTPUT
D2PAK-7 Tab = GND Lead 1. DELAY 2. NC 3. RESET 4. GND 5. SENSE 6. VOUT 7. VIN
1
1
VBAT
IQ
SENSE (Fixed Output Only) VIN VOUT 33 mF VDD
10 mF
NCV8506
DELAY CDELAY VADJ (Adjustable Output Only)
RRST 5.1 k
RESET GND
I/O
Figure 1. Application Diagram
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Microprocessor
NCV8506 Series
MAXIMUM RATINGS
Rating VIN (DC) Peak Transient Voltage (46 V Load Dump @ VIN = 14 V) Operating Voltage VOUT (DC) Voltage Range (RESET, DELAY) Input Voltage Range VADJ ESD Susceptibility (Human Body Model) (Machine Model) Value -15 to 45 60 45 -0.3 to 16 -0.3 to 10 -0.3 to 16 4.0 200 -40 to +150 -55 to 150 D2PAK 2.0 10-50* Reflow: (SMD styles only) (Note 1) 240 peak (Note 2) Unit V V V V V V kV V C C C/W C/W C
Junction Temperature, TJ Storage Temperature, TS Package Thermal Resistance, 7 Lead Junction-to-Case, RqJC Junction-to-Ambient, RqJA Lead Temperature Soldering:
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. 1. 60 second maximum above 183C. 2. -5C/+0C allowable conditions. *Depending on thermal properties of substrate, RqJA = RqJC + RqCA.
unless otherwise specified.)
ELECTRICAL CHARACTERISTICS (IOUT = 1.0 mA, -40C TJ 150C; VIN = dependent on voltage option (Note 3);
Characteristic Output Stage Output Voltage for 2.5 V Option (VO) Output Voltage for 3.3 V Option (VO) Output Voltage for 5.0 V Option (VO) Output Voltage for Adjustable Option (VO) 6.5 V < VIN < 16 V, 1.0 mA IOUT 400 mA 4.5 V < VIN < 26 V, 1.0 mA IOUT 400 mA 7.3 V < VIN < 16 V, 1.0 mA IOUT 400 mA 4.5 V < VIN < 26 V, 1.0 mA IOUT 400 mA 9.0 V < VIN < 16 V, 1.0 mA IOUT 400 mA 6.0 V < VIN < 26 V, 1.0 mA IOUT 400 mA VOUT = VADJ (Unity Gain) 6.5 V < VIN < 16 V, 1.0 mA < IOUT < 400 mA 4.5 V < VIN < 26 V, 1.0 mA < IOUT < 400 mA IOUT = 400 mA IOUT = 1.0 mA VIN = 14 V, 5.0 mA IOUT 400 mA 4.5 V < VIN < 26 V, IOUT = 1.0 mA 6.0 V < VIN < 26 V, IOUT = 1.0 mA IOUT = 100 mA, VIN = 12 V, Delay = 3.0 V IOUT = 75 mA, VIN = 14 V, Delay = 3.0 V IOUT 400 mA, VIN = 14 V, Delay = 3.0 V - VOUT = 0 V (Guaranteed by Design) 2.450 2.425 3.234 3.201 4.90 4.85 1.274 1.261 - - -30 - - - - - 425 100 150 2.5 2.5 3.3 3.3 5.0 5.0 1.300 1.306 400 30 5.0 5.0 5.0 100 2.5 25 800 500 180 2.550 2.575 3.366 3.399 5.10 5.15 1.326 1.339 600 150 30 25 25 150 5.0 45 - - - V V V V V V V V mV mV mV mV mV mA mA mA mA mA C Test Conditions Min Typ Max Unit
Dropout Voltage (VIN - VOUT) (5.0 V and Adj. > 5.0 V Options Only) Load Regulation Line Regulation (2.5 V, 3.3 V, and Adjustable Options) Line Regulation (5.0 V Option) Quiescent Current, (IQ) Active Mode
Current Limit Short Circuit Output Current Thermal Shutdown
3. Voltage range specified in the Output Stage of the Electrical Characteristics in boldface type.
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NCV8506 Series
ELECTRICAL CHARACTERISTICS (continued) (IOUT = 1.0 mA, -40C TJ 150C; VIN = dependent on voltage option (Note 4);
unless otherwise specified.) Characteristic Reset Function (RESET) RESET Threshold for 2.5 V Option HIGH (VRH) LOW (VRL) Hysteresis RESET Threshold for 3.3 V Option HIGH (VRH) LOW (VRL) Hysteresis RESET Threshold for 5.0 V Option HIGH (VRH) LOW (VRL) Hysteresis RESET Threshold for Adjustable Option HIGH (VRH) LOW (VRL) Hysteresis Output Voltage Low (VRLO) DELAY Switching Threshold (VDT) (2.5 V, 3.3 V, and 5.0 V Options) DELAY Switching Threshold (VDT) (Adjustable Option) DELAY Low Voltage DELAY Charge Current DELAY Discharge Current Voltage Adjust (Adjustable Output only) Input Current VADJ = 1.25 V -0.5 - 0.5 mA 4. Voltage range specified in the Output Stage of the Electrical Characteristics in boldface type. 5. For VIN 4.5 V, a RESET = Low may occur with the output in regulation. 6. Part is guaranteed by design to meet specification over the entire VIN voltage range, but is production tested only at the specified VIN voltage. 7. Minimum VIN = 4.5 V for 2.5 V, 3.3 V, and Adjustable options. Minimum VIN = 6.0 V for 5.0 V option. VIN = 4.5 V (Note 5) (Note 6) VOUT Increasing VOUT Decreasing VIN = 4.5 V (Note 5) (Note 6) VOUT Increasing VOUT Decreasing VIN = 6.0 V (Note 6) VOUT Increasing VOUT Decreasing VIN = 4.5 V (Note 5) (Note 6) VOUT Increasing VOUT Decreasing VIN = Minimum (Note 6) (Note 7) 1.0 V VOUT VRL, RRESET = 5.1 k VIN = Minimum (Note 6) (Note 7) VIN = Minimum (Note 6) (Note 7) VIN = Minimum (Note 6) (Note 7) VOUT < RESET Threshold Low(min) VIN = Minimum (Note 6) (Note 7) DELAY = 1.0 V, VOUT > VRH VIN = Minimum (Note 6) (Note 7) DELAY = 1.0 V, VOUT < VRL 2.35 2.30 25 3.10 3.00 35 4.70 4.60 50 1.22 1.19 10 - 1.4 1.0 - 2.5 5.0 - - - - - - - - - - - - 0.1 1.8 1.3 - 4.0 - 1.0 x VO - - 1.0 x VO - - 1.0 x VO - - 1.0 x VO - - 0.4 2.2 1.6 0.2 5.5 - V V mV V V mV V V mV V V mV V V V V mA mA Test Conditions Min Typ Max Unit
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NCV8506 Series
PACKAGE PIN DESCRIPTION, ADJUSTABLE OUTPUT
Pin Number 1 2 3 4 5 6 7 Pin Symbol DELAY NC RESET GND VADJ VOUT VIN Timing capacitor for RESET function. No connection. Active reset (accurate to VOUT 1.0 V) Ground. All GND leads must be connected to Ground. Voltage Adjust. A resistor divider from VOUT to this lead sets the output voltage. 2.0%, 400 mA output. Input Voltage. Function
PACKAGE PIN DESCRIPTION, FIXED OUTPUT
Pin Number 1 2 3 4 5 6 7 Pin Symbol DELAY NC RESET GND SENSE VOUT VIN Timing capacitor for RESET function. No connection. Active reset (accurate to VOUT 1.0 V) Ground. All GND leads must be connected to Ground. Kelvin connection which allows remote sensing of output voltage for improved regulation. If remote sensing is not desired, connect to VOUT. 2.0%, 400 mA output. Input Voltage. Function
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NCV8506 Series
VOUT Current Source (Circuit Bias) IBIAS Current Limit Sense SENSE
VIN
IBIAS +- 1.8 V (Fixed Versions) 1.3 V (Adjustable Version) + - RESET + - VBG VBG -18 mV Fixed Versions only Thermal Protection Bandgap Reference 15 k Adjustable Version only VADJ GND Error Amplifier
4.0 mA DELAY
IBIAS
VBG
Figure 2. Block Diagram
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NCV8506 Series
TYPICAL PERFORMANCE CHARACTERISTICS
5.10 5.08 Vout, OUTPUT VOLTAGE (V) 5.06 5.04 5.02 5.00 4.98 4.96 4.94 4.92 4.90 -40 -20 0 20 40 60 80 100 120 140 160 TEMPERATURE (C) 3.23 -40 -20 0 20 40 60 80 100 120 140 160 TEMPERATURE (C) Vout, OUTPUT VOLTAGE (V) VOUT = 5.0 V VIN = 14 V IOUT = 5.0 mA 3.35 3.33 3.31 3.29 3.27 3.25 VOUT = 3.3 V VIN = 14 V IOUT = 5.0 mA
Figure 3. 5 V Output Voltage vs Temperature
Figure 4. 3.3 V Output Voltage vs Temperature
2.55 2.54 Vout, OUTPUT VOLTAGE (V) 2.53 2.52 2.51 2.50 2.49 2.48 2.47 2.46 2.45 -40 -20 0 20 40 60 80 100 120 140 160 TEMPERATURE (C) DROPOUT VOLTAGE (mV) VOUT = 2.5 V VIN = 14 V IOUT = 5.0 mA
700 600 500 400 300 200 100 5 V and Adj. > 5 V options only 0 0 50 100 150 200 250 300 Iout, OUTPUT CURRENT (mA) 350 400 25 C -40 C 125 C
Figure 5. 2.5 V Output Voltage vs Temperature
Figure 6. Dropout Voltage vs Output Current
100 Unstable Region 10 ESR (W)
5.0 V 3.3 V 2.5 V ESR (W)
100 Unstable Region 10 Stable Region 1.0 Unstable Region
CVOUT = 33 mF*
1.0 Stable Region VIN = 14 V CVOUT = 10 mF 0.01 0 50 100 150 200 250 300 Iout, OUTPUT CURRENT (mA) 350 400
CVOUT = 0.1 mF
0.1
0.1
*There is no unstable lower region for the 33 mF capacitor 0 50
5 V version 350 400
100 150 200 250 300 Iout, OUTPUT CURRENT (mA)
Figure 7. Output Stability with Output Voltage Change
Figure 8. Output Stability with Output Capacitor Change
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NCV8506 Series
TYPICAL PERFORMANCE CHARACTERISTICS
2.0 IQ, QUIESCENT CURRENT (mA) 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0 5 10 15 20 25 30 35 40 IOUT, OUTPUT CURRENT (mA) 45 50 +25C 60 IQ, QUIESCENT CURRENT (mA) 50 +25C 40 30 20 10 0 -40C +125C
+125C
-40C
0
50
100 150 200 250 300 350 400 450 500 IOUT, OUTPUT CURRENT (mA)
Figure 9. Quiescent Current vs Output Current
Figure 10. Quiescent Current vs Output Current
12 IQ, QUIESCENT CURRENT (mA) Iout = 200 mA 10 8 6 4 2 0 Iout = 100 mA Iout = 50 mA Iout = 10 mA 6 8 10 12 14 16 18 20 VIN, INPUT VOLTAGE (V)
T = 25C IQ, QUIESCENT CURRENT (mA)
140 120 100 80 60 40 20 0 6 8 10 12 14 16 18 20 VIN, INPUT VOLTAGE (V) Iout = 100 mA
T = 25C
22
24
26
22
24
26
Figure 11. Quiescent Current vs Input Voltage
Figure 12. Quiescent Current vs Input Voltage
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NCV8506 Series
CIRCUIT DESCRIPTION REGULATOR CONTROL FUNCTIONS The NCV8506 contains the microprocessor compatible control function RESET (Figure 13). The DELAY lead provides source current (typically 4.0 mA) to the external DELAY capacitor during the following proceedings: 1. During Power Up (once the regulation threshold has been verified). 2. After a reset event has occurred and the device is back in regulation. The DELAY capacitor is discharged when the regulation (RESET threshold) has been violated. This is a latched incident. The capacitor will fully discharge and wait for the device to regulate before going through the delay time event again.
Voltage Adjust
VIN RESET Threshold DELAY Threshold (VDT)
VOUT DELAY RESET Td Td
Figure 13. Reset and Delay Circuit Wave Forms RESET Function
A RESET signal (low voltage) is generated as the IC powers up until VOUT is within 1.5% of the regulated output voltage, or when VOUT drops out of regulation,and is lower than 4.0% below the regulated output voltage. Hysteresis is included in the function to minimize oscillations. The RESET output is an open collector NPN transistor, controlled by a low voltage detection circuit. The circuit is functionally independent of the rest of the IC thereby guaranteeing that the RESET signal is valid for VOUT as low as 1.0 V.
DELAY Function
Figure 14 shows the device setup for a user configurable output voltage. The feedback to the VADJ pin is taken from a voltage divider referenced to the output voltage. The loop is balanced around the Unity Gain threshold (1.30 V typical).
VOUT NCV8506 VADJ 15 k 1.28 V 5.1 k 5.0 V COUT
The reset delay circuit provides a programmable (by external capacitor) delay on the RESET output lead.
Figure 14. Adjustable Output Voltage
APPLICATION NOTES SETTING THE DELAY TIME The delay time is controlled by the Reset Delay Low Voltage, Delay Switching Threshold, and the Delay Charge Current. The delay follows the equation:
tDELAY + [CDELAY(Vdt * Reset Delay Low Voltage)] Delay Charge Current
Example: Using CDELAY = 33 nF. Assume reset Delay Low Voltage = 0. Use the typical value for Vdt = 1.8 V (2.5 V, 3.3 V, and 5.0 V options). Use the typical value for Delay Charge Current = 4.2 mA.
tDELAY + [33 nF(1.8 * 0)] + 14 ms 4.2 mA
STABILITY CONSIDERATIONS The output or compensation capacitor helps determine three main characteristics of a linear regulator: start-up delay, load transient response and loop stability. The capacitor value and type should be based on cost, availability, size and temperature constraints. A tantalum or aluminum electrolytic capacitor is best, since a film or ceramic capacitor with almost zero ESR can cause instability. The aluminum electrolytic capacitor is the least expensive solution, but, if the circuit operates at low temperatures (-25C to -40C), both the value and ESR of the capacitor will vary considerably. The capacitor manufacturers data sheet usually provides this information.
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NCV8506 Series
The value for the output capacitor COUT shown in Figure 15 should work for most applications, however it is not necessarily the optimized solution.
VIN CIN* 0.1 mF VOUT
NCV8506
RESET
RRST
COUT** 33 mF
The value of RqJA can then be compared with those in the package section of the data sheet. Those packages with RqJA's less than the calculated value in equation 2 will keep the die temperature below 150C. In some cases, none of the packages will be sufficient to dissipate the heat generated by the IC, and an external heatsink will be required.
IIN VIN SMART REGULATOR(R) IOUT VOUT
*CIN required if regulator is located far from the power supply filter. **COUT required for stability. Capacitor must operate at minimum temperature expected.
} Control Features
IQ
Figure 15. Test and Application Circuit Showing Output Compensation
Figure 16. Single Output Regulator with Key Performance Parameters Labeled
CALCULATING POWER DISSIPATION IN A SINGLE OUTPUT LINEAR REGULATOR The maximum power dissipation for a single output regulator (Figure 16) is:
PD(max) + [VIN(max) * VOUT(min)] IOUT(max) ) VIN(max)IQ
(1)
where: VIN(max) is the maximum input voltage, VOUT(min) is the minimum output voltage, IOUT(max) is the maximum output current for the application, and IQ is the quiescent current the regulator consumes at IOUT(max). Once the value of PD(max) is known, the maximum permissible value of RqJA can be calculated:
T RqJA + 150C * A PD
(2)
HEAT SINKS A heat sink effectively increases the surface area of the package to improve the flow of heat away from the IC and into the surrounding air. Each material in the heat flow path between the IC and the outside environment will have a thermal resistance. Like series electrical resistances, these resistances are summed to determine the value of RqJA:
RqJA + RqJC ) RqCS ) RqSA
(3)
where: RqJC = the junction-to-case thermal resistance, RqCS = the case-to-heatsink thermal resistance, and RqSA = the heatsink-to-ambient thermal resistance. RqJC appears in the package section of the data sheet. Like RqJA, it too is a function of package type. RqCS and RqSA are functions of the package type, heatsink and the interface between them. These values appear in heat sink data sheets of heat sink manufacturers.
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NCV8506 Series
ORDERING INFORMATION
Device NCV8506D2TADJ NCV8506D2TADJG NCV8506D2TADJR4 NCV8506D2TADJR4G NCV8506D2T25 NCV8506D2T25G NCV8506D2T25R4 NCV8506D2T25R4G NCV8506D2T33 NCV8506D2T33G NCV8506D2T33R4 NCV8506D2T33R4G NCV8506D2T50 NCV8506D2T50G NCV8506D2T50R4 NCV8506D2T50R4G 5.0 V 3.3 V 2.5 V Adjustable Output Voltage Package D2PAK-7 D2PAK-7 (Pb-Free) D2PAK-7 D2PAK-7 (Pb-Free) D2PAK-7 D2PAK-7 (Pb-Free) D2PAK-7 D2PAK-7 (Pb-Free) D2PAK-7 (Pb-Free) D2PAK-7 (Pb-Free) D2PAK-7 (Pb-Free) D2PAK-7 (Pb-Free) D2PAK-7 D2PAK-7 D2PAK-7 D2PAK-7 Shipping 50 Units / Rail 50 Units / Rail 750 Tape & Reel 750 Tape & Reel 50 Units / Rail 50 Units / Rail 750 Tape & Reel 750 Tape & Reel 50 Units / Rail 50 Units / Rail 750 Tape & Reel 750 Tape & Reel 50 Units / Rail 50 Units / Rail 750 Tape & Reel 750 Tape & Reel
For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D.
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NCV8506 Series
PACKAGE DIMENSIONS
D2PAK-7 (SHORT LEAD) DPS SUFFIX CASE 936AB-01 ISSUE A
K A E S B H L P D G N M
TERMINAL 8 NOTES: 1. DIMENSIONS AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. DIM A B C D E G H K L M N P R S U V INCHES MIN MAX 0.396 0.406 0.326 0.336 0.170 0.180 0.026 0.036 0.045 0.055 0.050 REF 0.539 0.579 0.055 0.066 0.000 0.010 0.100 0.110 0.017 0.023 0.058 0.078 0 8 0.095 0.105 0.256 REF 0.305 REF MILLIMETERS MIN MAX 10.05 10.31 8.28 8.53 4.31 4.57 0.66 0.91 1.14 1.40 1.27 REF 13.69 14.71 1.40 1.68 0.00 0.25 2.54 2.79 0.43 0.58 1.47 1.98 0 8 2.41 2.67 6.50 REF 7.75 REF
U
V
R
SOLDERING FOOTPRINT*
C 3.25 0.128 C L 10.54 0.415 C L 9.5 0.374 2.16 0.085 1.27 0.050
3.8 0.150 1
8.26 0.325
0.96 0.038
SCALE 3:1
mm inches
*For additional information on our Pb-Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D.
SMART REGULATOR is a registered trademark of Semiconductor Components Industries, LLC (SCILLC).
ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. "Typical" parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303-675-2175 or 800-344-3860 Toll Free USA/Canada Fax: 303-675-2176 or 800-344-3867 Toll Free USA/Canada Email: orderlit@onsemi.com N. American Technical Support: 800-282-9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center Phone: 81-3-5773-3850 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative
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NCV8506/D

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