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NCV8674 Very Low Iq Low Dropout Linear Regulator
The NCV8674 is a precision 5.0 V or 12 V fixed output, low dropout integrated voltage regulator with an output current capability of 350 mA. Careful management of light load current consumption, combined with a low leakage process, achieve a typical quiescent current of 30 mA. The output voltage is accurate within "2.0%, and maximum dropout voltage is 600 mV at full rated load current. It is internally protected against input supply reversal, output overcurrent faults, and excess die temperature. No external components are required to enable these features.
Features
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D2PAK DS SUFFIX CASE 936 1
NC V8674xxx AWLYWWG
* * * * * *
* * * *
5.0 V and 12 V Output Voltage Options "2.0% Output Accuracy, Over Full Temperature Range 40 mA Maximum Quiescent Current at IOUT = 100 mA 600 mV Maximum Dropout Voltage at 350 mA Load Current Wide Input Voltage Operating Range of 5.5 V to 45 V Internal Fault Protection -42 V Reverse Voltage Short Circuit/Overcurrent Thermal Overload NCV Prefix for Automotive and Other Applications Requiring Site and Control Changes AEC-Q100 Qualified EMC Compliant This is a Pb-Free Device
3 xxx A WL Y WW G
= 50 (5.0 V Option) = 120 (12 V Option) = Assembly Location = Wafer Lot = Year = Work Week = Pb-Free Package
PIN CONNECTIONS
PIN 1 2, TAB 3 FUNCTION VIN GND VOUT
ORDERING INFORMATION
See detailed ordering and shipping information in the package dimensions section on page 10 of this data sheet.
(c) Semiconductor Components Industries, LLC, 2008
November, 2008 - Rev. 2
1
Publication Order Number: NCV8674/D
NCV8674
VIN Bias Current Generators 1.3 V Reference VOUT
+ Error Amp -
Thermal Shutdown GND
Figure 1. Block Diagram PIN FUNCTION DESCRIPTION
Pin No. 1 2 3 TAB Symbol VIN GND VOUT GND Function Unregulated input voltage; (VOUT + 0.5 V) to 45 V. Ground; substrate. Regulated output voltage; collector of the internal PNP pass transistor. Ground; substrate and best thermal connection to the die.
OPERATING RANGE
Pin Symbol, Parameter VIN, DC Input Operating Voltage Junction Temperature Operating Range Symbol VIN TJ Min VOUT + 0.5 V -40 Max +45 +150 Unit V _C
MAXIMUM RATINGS
Rating VIN, DC Voltage VOUT, DC Voltage Storage Temperature ESD Capability, Human Body Model (Note 1) ESD Capability, Machine Model (Note 1) Symbol VIN VOUT Tstg VESDHB VESDMIM Min -42 -0.3 -55 4000 200 Max +45 +16 +150 - - Unit V V _C V V
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. This device series incorporates ESD protection and is tested by the following methods: ESD HBM tested per AEC-Q100-002 (EIA/JESD22-A 114C) ESD MM tested per AEC-Q100-003 (EIA/JESD22-A 115C)
Thermal Resistance
Parameter Junction-to-Ambient(Note 2) Junction-to-Case 2. 1 oz., 1 in2 copper area. Symbol RqJA RqJC Min - - Max 40 4.0 Unit C/W C/W
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NCV8674
LEAD SOLDERING TEMPERATURE & MSL
Rating Lead Temperature Soldering - Reflow (SMD Styles Only), Lead Free (Note 3) Moisture Sensitivity Level 3. Lead Free, 60 sec - 150 sec above 217_C, 40 sec max at peak. Symbol Tsld MSL Min - 1 Max 265 pk Unit _C -
ELECTRICAL CHARACTERISTICS (VIN = 13.5 V, Tj = -40_C to +150_C, unless otherwise noted.)
Characteristic Output Voltage 5 V Option 12 V Option Line Regulation 5 V Option 12 V Option Load Regulation 5 V Option 12 V Option Dropout Voltage Quiescent Current 5 V Option 12 V Option 5 V Option 12 V Option Active Ground Current 5 V Option 12 V Option 5 V Option 12 V Option Power Supply Rejection Output Capacitor for Stability PROTECTION Current Limit 5 V Option 12 V Option Short Circuit Current Limit Thermal Shutdown Threshold IOUT(LIM) mA VOUT = 4.5 V (Note 4) VOUT = 10.8 V (Note 4) VOUT = 0 V (Note 4) (Note 6) 350 350 100 150 - - 600 - - - - 200 mA _C PSRR COUT ESR IG(ON) Symbol VOUT Test Conditions 0.1 mA v IOUT v 350 mA (Note 4) (VOUT + 1 V) v VIN v 28 V IOUT = 5.0 mA (VOUT + 1 V) v VIN v 28 V 1.0 mA v IOUT v 350 mA (Note 4) IOUT = 100 mA (Notes 4 & 5) IOUT = 350 mA (Notes 4 & 5) IOUT = 100 mA TJ = 25_C TJ = 25_C TJ = -40_C to +85_C TJ = -40_C to +85_C IOUT = 50 mA (Note 4) IOUT = 50 mA (Note 4) IOUT = 350 mA (Note 4) IOUT = 350 mA (Note 4) VRIPPLE = 0.5 VP-P, F = 100 Hz IOUT = 0.1 mA to 350 mA (Note 4) Min 4.90 11.76 -25 -60 -35 -84 - - - - - - - - - - - 22 - Typ 5.00 12.00 5.0 12 5.0 12 175 300 27 31 30 34 1.1 1.1 18 21 67 - - Max 5.10 12.24 mV +25 +60 mV +35 +84 500 600 35 39 38 42 mA 3.0 3.0 27 40 - - 7.0 dB mF W mV mA Unit V
DVOUT vs. VIN
DVOUT vs. IOUT
VIN-VOUT Iq
IOUT(SC) TTSD
4. Use pulse loading to limit power dissipation. 5. Dropout voltage = (VIN - VOUT), measured when the output voltage has dropped 100 mV relative to the nominal value obtained with VIN = 13.5 V. 6. Not tested in production. Limits are guaranteed by design.
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NCV8674
IIN CIN 1.0 mF 100 nF Vin Vout IOUT COUT 22 mF Iq GND Output RL
Input
1
8674 2
3
Figure 2. Measurement Circuit
Input CIN 100 nF
Vin
1
8674 2 Iq GND
3
Vout COUT 22 mF
Output
Figure 3. Applications Circuit
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NCV8674
TYPICAL CHARACTERISTIC CURVES - 5 V OPTION
100 10 1 Stable Region 0.1 0.01 0.001 Cout = 22 mF TA = -40C to 150C 0 50 Unexplored Region* 100 150 200 250 OUTPUT CURRENT (mA) 300 350 Unstable Region OUTPUT VOLTAGE (V) 5.10 5.08 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 Vin = 6 V Iout = 100 mA 100 120 140 160 Vout(nom) = 5.0 V
Vout(nom) = 5.0 V
ESR (W)
*The min specified ESR is based on Murata's capacitor GRM31CR60J226KE19 used in measurement. The true 100 min ESR limit might be lower than shown. 90 QUIESCENT CURRENT (mA) 80 70 60 50 40 30 20 10 0 -40 -20 0 20 40 60 80 Vin = 13.5 V Iout = 100 mA 100 120 140 160 TEMPERATURE (C) Vout(nom) = 5.0 V CURRENT LIMIT (mA)
Figure 4. ESR Stability Region vs. Output Current
TEMPERATURE (C)
Figure 5. Output Voltage vs. Temperature
1000 900 800 700 600 500 400 300 200 100 0 -40 -20 0 20 40 60 80 Vin = 6 V 100 120 140 160 Vout(nom) = 5.0 V
TEMPERATURE (C)
Figure 6. Quiescent Current vs. Temperature
Figure 7. Current Limit vs. Temperature
7 QUIESCENT CURRENT (mA) 6 OUTPUT VOLTAGE (V) 5 4 3 2 1 0 0 5 10 15 20 25 30 35 40 45 Vout(nom) = 5.0 V
30 25 20 25C 15 -40C 10 5 0 Vin = 13.5 V 0 100 200 OUTPUT LOAD (mA) 300 400 Vout(nom) = 5.0 V 125C
INPUT VOLTAGE (V)
Figure 8. Output Voltage vs. Input Voltage
Figure 9. Quiescent Current vs. Output Load
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NCV8674
TYPICAL CHARACTERISTIC CURVES - 5 V OPTION
500 450 DROPOUT VOLTAGE (mV) 400 350 300 250 200 150 100 50 0 -40 -20 0 20 40 60 80 100 120 140 160 Iout = 100 mA Iout = 350 mA Vout(nom) = 5.0 V QUIESCENT CURRENT (mA) 20 15 10 5 0 -40 -20 25 Vout(nom) = 5.0 V
Vin = 13.5 V Iout = 350 mA 0 20 40 60 80 100 120 140 160
TEMPERATURE (C)
TEMPERATURE (C)
Figure 10. Dropout Voltage vs. Temperature
1.4 QUIESCENT CURRENT (mA) 1.2 1.0 0.8 0.6 0.4 0.2 0 -40 -20 0 20 40 60 80 Vout(nom) = 5.0 V
Figure 11. Quiescent Current vs. Temperature - 350 mA Load
Vin = 13.5 V Iout = 50 mA 100 120 140 160
TEMPERATURE (C)
Figure 12. Quiescent Current vs. Temperature - 50 mA Load
Vin = 13.5 V Iout = 100 mA Cout = 22 mF TA = 25C
Vout(nom) = 5.0 V
Vin = 13.5 V Iout = 350 mA Cout = 22 mF TA = 25C
Vout(nom) = 5.0 V
Figure 13. Power Supply Rejection - 100 mA
Figure 14. Power Supply Rejection - 350 mA
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NCV8674
TYPICAL CHARACTERISTIC CURVES - 12 V OPTION
100 10 1 Stable Region 0.1 0.01 0.001 Cout = 22 mF TA = -40C to 150C 0 50 Unexplored Region* 100 150 200 250 OUTPUT CURRENT (mA) 300 350 Unstable Region OUTPUT VOLTAGE (V) 12.25 12.20 12.15 12.10 12.05 12.00 11.95 11.90 11.85 11.80 11.75 -40 -20 0 20 40 60 80 Vin = 13.5 V Iout = 100 mA 100 120 140 160 Vout(nom) = 12 V
Vout(nom) = 12 V
ESR (W)
100 90 QUIESCENT CURRENT (mA) 80 70 60 50 40 30 20 10
*The min specified ESR is based on Murata's capacitor GRM32ER71C226ME18 used in measurement. The true min ESR limit might be lower than shown. Vout(nom) = 12 V CURRENT LIMIT (mA)
Figure 15. ESR Stability Region vs. Output Current
TEMPERATURE (C)
Figure 16. Output Voltage vs. Temperature
1000 900 800 700 600 500 400 300 200 100 0 -40 -20 0 20 40 60 80 Vin = 13.5 V 100 120 140 160 Vout(nom) = 12 V
0 -40 -20
Vin = 13.5 V Iout = 100 mA 0 20 40 60 80 100 120 140 160 TEMPERATURE (C)
TEMPERATURE (C)
Figure 17. Quiescent Current vs. Temperature
Figure 18. Current Limit vs. Temperature
14 QUIESCENT CURRENT (mA) 12 OUTPUT VOLTAGE (V) 10 8 6 4 2 0 0 5 10 15 20 25 30 35 40 45 Vout(nom) = 12 V
35 30 25 20 15 10 5 0 Vin = 13.5 V 0 100 200 OUTPUT LOAD (mA) 300 400 -40C Vout(nom) = 12 V 125C 25C
INPUT VOLTAGE (V)
Figure 19. Output Voltage vs. Input Voltage
Figure 20. Quiescent Current vs. Output Load
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NCV8674
TYPICAL CHARACTERISTIC CURVES - 12 V OPTION
500 450 DROPOUT VOLTAGE (mV) 400 350 300 250 200 150 100 50 0 -40 -20 0 20 40 60 80 100 120 140 160 Iout = 100 mA Iout = 350 mA Vout(nom) = 12 V QUIESCENT CURRENT (mA) 35 30 25 20 15 10 5 0 -40 -20 0 20 40 60 80 Vin = 13.5 V Iout = 350 mA 100 120 140 160 Vout(nom) = 12 V
TEMPERATURE (C)
TEMPERATURE (C)
Figure 21. Dropout Voltage vs. Temperature
1.8 1.6 QUIESCENT CURRENT (mA) 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 -40 -20 0 20 40 60 80 Vout(nom) = 12 V
Figure 22. Quiescent Current vs. Temperature - 350 mA Load
Vin = 13.5 V Iout = 50 mA 100 120 140 160
TEMPERATURE (C)
Figure 23. Quiescent Current vs. Temperature - 50 mA Load
Figure 24. Power Supply Rejection - 100 mA
Figure 25. Power Supply Rejection - 350 mA
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NCV8674
Circuit Description
The NCV8674 is a precision trimmed 5.0 V or 12 V fixed output regulator. Careful management of light load consumption combined with a low leakage process results in a typical quiescent current of 30 mA. The device has current capability of 350 mA, with 600 mV of dropout voltage at full rated load current. The regulation is provided by a PNP pass transistor controlled by an error amplifier with a bandgap reference. The regulator is protected by both current limit and short circuit protection. Thermal shutdown occurs above 150C to protect the IC during overloads and extreme ambient temperatures.
Regulator
must be paid to ESR constraints. 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 manufacturer's data sheet usually provides this information. The value for the output capacitor COUT shown in Figure 2 should work for most applications; however, it is not necessarily the optimized solution. Stability is guaranteed at values COUT 22 mF and ESR 7.0 W, within the operating temperature range. Actual limits are shown in a graph in the Typical Characteristics section.
Calculating Power Dissipation in a Single Output Linear Regulator
The error amplifier compares the reference voltage to a sample of the output voltage (Vout) and drives the base of a PNP series pass transistor by a buffer. The reference is a bandgap design to give it a temperature-stable output. Saturation control of the PNP is a function of the load current and input voltage. Over saturation of the output power device is prevented, and quiescent current in the ground pin is minimized. The NCV8674 is equipped with foldback current protection. This protection is designed to reduce the current limit during an overcurrent situation.
Regulator Stability Considerations
The maximum power dissipation for a single output regulator (Figure 2) is:
PD(max) + [VIN(max) * VOUT(min)] @ IOUT(max) ) VIN(max) @ Iq
(eq. 1)
The input capacitor CIN in Figure 2 is necessary for compensating input line reactance. Possible oscillations caused by input inductance and input capacitance can be damped by using a resistor of approximately 1 W in series with CIN. The output or compensation capacitor, COUT helps determine three main characteristics of a linear regulator: startup delay, load transient response and loop stability. The capacitor value and type should be based on cost, availability, size and temperature constraints. Tantalum, aluminum electrolytic, film, or ceramic capacitors are all acceptable solutions, however, attention
THERMAL RESISTANCE JUNCTION-TO-AIR (C/W) 75
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:
RqJA + 150 oC * TA PD
(eq. 2)
The value of RqJA can then be compared with those in thermal resistance versus copper area graph (Figure 26). Those designs with cooling area corresponding to RqJA's less than the calculated value in Equation 2 will keep the die temperature below 150C. The current flow and voltages are shown in the Measurement Circuit Diagram.
100
D2PAK 1 oz D2PAK 2 oz
R(t), (C/W)
50
10
D2PAK 1
25
0
0
100
200
300
400
500
600
700
800
900
0.1 0.000001
Single Pulse 0.0001 0.01 0.1 1 10 100 1000 PULSE TIME (sec)
COPPER AREA (mm2)
Figure 26.
Figure 27. NCV8674 @ PCB Cu Area 650 mm2 PCB Cu thk 1 oz
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NCV8674
ORDERING INFORMATION
Device NCV8674DS50G NCV8674DS50R4G NCV8674DS120G NCV8674DS120R4G Marking V867450 V867450 V8674120 V8674120 Package D2PAK (Pb-Free) D2PAK (Pb-Free) D2PAK (Pb-Free) D2PAK (Pb-Free) Shipping 50 Units / Rail 800 / Tape & Reel 50 Units / Rail 800 / Tape & Reel
For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specification Brochure, BRD8011/D.
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NCV8674
PACKAGE DIMENSIONS
D2PAK CASE 936-03 ISSUE C
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. TAB CONTOUR OPTIONAL WITHIN DIMENSIONS A AND K. 4. DIMENSIONS U AND V ESTABLISH A MINIMUM MOUNTING SURFACE FOR TERMINAL 4. 5. DIMENSIONS A AND B DO NOT INCLUDE MOLD FLASH OR GATE PROTRUSIONS. MOLD FLASH AND GATE PROTRUSIONS NOT TO EXCEED 0.025 (0.635) MAXIMUM. DIM A B C D E F G H J K L M N P R S U V INCHES MIN MAX 0.386 0.403 0.356 0.368 0.170 0.180 0.026 0.036 0.045 0.055 0.051 REF 0.100 BSC 0.539 0.579 0.125 MAX 0.050 REF 0.000 0.010 0.088 0.102 0.018 0.026 0.058 0.078 5 _ REF 0.116 REF 0.200 MIN 0.250 MIN MILLIMETERS MIN MAX 9.804 10.236 9.042 9.347 4.318 4.572 0.660 0.914 1.143 1.397 1.295 REF 2.540 BSC 13.691 14.707 3.175 MAX 1.270 REF 0.000 0.254 2.235 2.591 0.457 0.660 1.473 1.981 5 _ REF 2.946 REF 5.080 MIN 6.350 MIN
-T- K A S B F H
1 2 3 OPTIONAL CHAMFER
TERMINAL 4
E V
U
M J D 0.010 (0.254) M T N R
L P
G
C
SOLDERING FOOTPRINT*
10.49
8.38 16.155
3.504 1.016 5.080 PITCH
DIMENSIONS: MILLIMETERS 2X
2X
*For additional information on our Pb-Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D.
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
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NCV8674/D

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