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NCV4264 150 mA Low Dropout Linear Regulator
The NCV4264 is a wide input range, precision fixed output, low dropout integrated voltage regulator with a full load current rating of 150 mA. The output voltage is accurate within "2.0%, and maximum dropout voltage is 500 mV at 100 mA load current. It is internally protected against 45 V input transients, input supply reversal, output overcurrent faults, and excess die temperature. No external components are required to enable these features.
Features
TAB 1 2 3 A Y W V64_5x x G
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SOT-223 ST SUFFIX CASE 318E
* * * * * *
* * *
5.0 V Fixed Output "2.0% Output Accuracy, Over Full Temperature Range Quiescent Current 400 mA at IOUT = 1.0 mA 500 mV Maximum Dropout Voltage at 100 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 This is a Pb-Free Device
AYW V64_5x G
1 = Assembly Location = Year = Work Week = Specific Device Code = 5 (5.0 V) = Pb-Free Package
PIN CONNECTIONS
GND
1 VIN GND VOUT (Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package dimensions section on page 7 of this data sheet.
(c) Semiconductor Components Industries, LLC, 2006
December, 2006 - Rev. P0
1
Publication Order Number: NCV4264/D
NCV4264
IN
OUT
1.3 V Reference
+ Error Amp -
Thermal Shutdown GND
Figure 1. Block Diagram PIN FUNCTION DESCRIPTION
Pin No. 1 2 3 TAB Symbol VIN GND VOUT GND Unregulated input voltage; 5.5 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. Function
MAXIMUM RATINGS
Rating VIN, DC Input Voltage VOUT, DC Voltage Storage Temperature Moisture Sensitivity Level ESD Capability, Human Body Model (Note 1) ESD Capability, Machine Model (Note 1) Lead Temperature Soldering Reflow (SMD Styles Only), Lead Free (Note 2) Symbol VIN VOUT Tstg MSL VESDHB VESDMIM Tsld 4000 200 - Min -42 -0.3 -55 1 - - 265 pk Max +45 +16 +150 Unit V V _C - V V _C
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.
OPERATING RANGE
Pin Symbol, Parameter VIN, DC Input Operating Voltage Junction Temperature Operating Range Symbol VIN TJ Min 5.5 -40 Max +45 +150 Unit V _C
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) 2. Lead Free, 60 sec - 150 sec above 217_C, 40 sec max at peak.
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NCV4264
THERMAL RESISTANCE
Parameter Junction-to-Ambient Junction-to-Case SOT-223 SOT-223 Symbol RqJA RqJC Condition Min - - Max 99 (Note 3) 17 Unit C/W
ELECTRICAL CHARACTERISTICS (VIN = 13.5 V, Tj = -40_C to +150_C, unless otherwise noted.)
Characteristic Output Voltage Symbol VOUT DVOUT vs. VIN DVOUT vs. IOUT VIN-VOUT Iq IG(ON) PSRR COUT ESR Test Conditions 5.0 mA v IOUT v 100 mA (Note 4) 6.0 V v VIN v 28 V IOUT = 5.0 mA 6.0 V v VIN v 28 V 5.0 mA v IOUT v 100 mA (Note 4) IOUT = 100 mA (Notes 4 & 5) IOUT = 1.0 mA IOUT = 50 mA (Note 4) VRIPPLE = 0.5 VP-P, F = 100 Hz IOUT = 1.0 mA to 100 mA (Notes 4) Min 4.900 Typ 5.000 Max 5.100 Unit V
Line Regulation Load Regulation Dropout Voltage Quiescent Current Active Ground Current Power Supply Rejection Output Capacitor for Stability PROTECTION Current Limit Short Circuit Current Limit Thermal Shutdown Threshold
-30 -40 - - - - 10
5.0 5.0 275 83 1.5 67 -
+30 +40 500 400 15 - 9.0
mV mV mV mA mA dB mF W
IOUT(LIM) IOUT(SC) TTSD
VOUT = 4.5 V (Note 4) VOUT = 0 V (Note 4) (Note 6)
150 40 150
- - -
500 500 200
mA mA _C
3. 1 oz., 100 mm2 copper area. 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.
5.5-45 V Input
II CI1 100 mF 100 nF
Vin
1
4264 2 GND
3
Vout
IQ COUT 10 mF
Output RL
Figure 2. Measurement Circuit
5.5-45 V Input
Vin Cin 100 nF
1
4264 2 GND
3
Vout COUT 10 mF
5.0 V Output
Figure 3. Applications Circuit
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NCV4264
TYPICAL CHARACTERISTIC CURVES
1000 100 10 1 0.1 Stable Region 0.01 0 20 40 60 80 100 120 Vin = 13.5 V 140 160 180 Maximum ESR Cout = 10, 22 mF 0.45 0.40 DROPOUT VOLTAGE (V) 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0 0 50 100 OUTPUT LOAD (mA) 150 200 25C -40C 125C
ESR (W)
LOAD CURRENT (mA)
Figure 4. ESR Characterization
18 CURRENT CONSUMPTION (mA) 16 INPUT VOLTAGE (V) 14 12 10 8.0 6.0 4.0 2.0 0 0 10 20 30 RL = 50 W RL = 100 W 40 50 14 12 10 8.0 6.0 4.0 2.0 0 0
Figure 5. Dropout Voltage vs. Output Load
125C
25C -40C
50
100
150
200
CURRENT CONSUMPTION (mA)
OUTPUT CURRENT (mA)
Figure 6. Current Consumption vs. Input Voltage
450 QUIESCENT CURRENT (mA) 400 350 300 250 200 150 100 50 0 0 5.0 10 OUTPUT LOAD (mA) 15 20 125C 5.10 25C OUTPUT VOLTAGE (V) -40C 5.08 5.06 5.04 5.02 5.00 4.98 4.96 4.94 4.92 4.90 -50
Figure 7. Current Consumption vs. Output Current
0
50 TEMPERATURE (C)
100
150
Figure 8. Quiescent Current vs. Output Load
Figure 9. Output Voltage vs. Temperature
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NCV4264
180 160 OUTPUT CURRENT (mA) OUTPUT VOLTAGE (V) 140 120 100 80 60 40 20 0 0 10 20 TA = 125C 30 40 50 TA = 25C 6.0 5.0 4.0 3.0 2.0 1.0 0 RL = 50 W 0 2.0 4.0 6.0 8.0 10
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
Figure 10. Output Current vs. Input Voltage
Figure 11. Input Voltage vs. Output Voltage
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NCV4264
Circuit Description
The NCV4264 is a precision trimmed 5.0 V fixed output regulator. The device has current capability of 150 mA, with 500 mV of dropout voltage at 100 mA of 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
Calculating Power Dissipation in a Single Output Linear Regulator
The maximum power dissipation for a single output regulator (Figure 3) is:
PD(max) + [VIN(max) * VOUT(min)] @ IQ(max) ) VI(max) @ Iq
(eq. 1)
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.
Regulator Stability Considerations
Where: VIN(max) is the maximum input voltage, VOUT(min) is the minimum output voltage, IQ(max) is the maximum output current for the application, and Iq is the quiescent current the regulator consumes at IQ(max). Once the value of PD(Max) is known, the maximum permissible value of RqJA can be calculated:
PqJA + 150 oC * TA PD
(eq. 2)
The input capacitor CIN1 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 CIN2. 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. 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 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 CQ = 10 mF and an ESR = 9 W within the operating temperature range. Actual limits are shown in a graph in the Typical Performance Characteristics section.
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 heat sink will be required. The current flow and voltages are shown in the Measurement Circuit Diagram.
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
(eq. 3)
Where: RqJC = the junction-to-case thermal resistance, RqCS = the case-to-heat sink thermal resistance, and RqSA = the heat sink-to-ambient thermal resistance. RqJA 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, heat sink and the interface between them. These values appear in data sheets of heat sink manufacturers. Thermal, mounting, and heat sinking are discussed in the ON Semiconductor application note AN1040/D, available on the ON Semiconductor Website.
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NCV4264
120 100 80 60 40 20 0 SOT223
qJA (C/W)
0
100
200
300
400
500
600
700
COPPER AREA (mm2)
Figure 12.
100 SOT223 10 R(t) (C/W)
1.0
0.1
0.000001 0.00001
0.0001
0.001
0.01
0.1
1.0
10
100
1000
PULSE TIME (sec)
Figure 13. ORDERING INFORMATION
Device NCV4264ST50T3G Marking V64_5 Package SOT-223 Shipping 4000 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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NCV4264
PACKAGE DIMENSIONS
SOT-223 (TO-261) ST SUFFIX CASE 318E-04 ISSUE L
D b1
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. MILLIMETERS NOM MAX 1.63 1.75 0.06 0.10 0.75 0.89 3.06 3.20 0.29 0.35 6.50 6.70 3.50 3.70 2.30 2.40 0.94 1.05 1.75 2.00 7.00 7.30 10 - INCHES NOM 0.064 0.002 0.030 0.121 0.012 0.256 0.138 0.091 0.037 0.069 0.276 -
4
HE
1
2
3
E
e1
b e A q L1 C
DIM A A1 b b1 c D E e e1 L1 HE
q
MIN 1.50 0.02 0.60 2.90 0.24 6.30 3.30 2.20 0.85 1.50 6.70 0
MIN 0.060 0.001 0.024 0.115 0.009 0.249 0.130 0.087 0.033 0.060 0.264 0
MAX 0.068 0.004 0.035 0.126 0.014 0.263 0.145 0.094 0.041 0.078 0.287 10
0.08 (0003)
A1
SOLDERING FOOTPRINT*
3.8 0.15 2.0 0.079
2.3 0.091
2.3 0.091
6.3 0.248
2.0 0.079 1.5 0.059
mm inches
SCALE 6:1
*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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NCV4264/D

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