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 NCP1117LP 1.0 A Low-Dropout Positive Fixed and Adjustable Voltage Regulators
The NCP1117LP is the low power version of the popular NCP1117 family of low dropout voltage regulators, with reduced quiescent current. It is intended primarily for high volume consumer applications over the 0 to 125 degree temperature range. Capable of providing an output current in excess of 1 A, with a dropout voltage of 1.3 V at 1 A full current load, the series consists of an adjustable and five fixed voltage versions of 1.5 V, 1.8 V, 2.5 V, 3.3 V and 5.0 V. Internal protection features consist of output current limiting and built-in thermal shutdown. The NCP1117LP series can operate up to 18 V max input voltage. The device is available in the popular SOT-223 package.
Features http://onsemi.com MARKING DIAGRAM
3 4 AYW 17Lxx G G 1 2 3
1
SOT-223 ST SUFFIX CASE 318H Pin: 1. Adjust/Ground 2. Output 3. Input xx A Y W G
* * * * * * * * * * * * * * *
Output Current in Excess of 1.0 A 1.4 V Maximum Dropout Voltage at 1 A Quiescent Current over 10 times Lower than Traditional 1117 Fixed Output Voltages of 1.5 V, 1.8 V, 2.5 V, 3.3 V and 5.0 V Adjustable Output Voltage Option No Minimum Load Requirement for Fixed Voltage Output Devices Good Noise Rejection Current Limit and Thermal Shutdown Protection Operation up to 18 V Input These are Pb-Free Devices TV and Monitors Set Top Boxes and Entertainment Devices Switching Power Supply Post Regulation Game Consoles and Consumer Applications Hard Drive Controllers
Heatsink tab is connected to Pin 2. = 15, 18, 25, 33, 50, AD = Assembly Location = Year = Work Week = Pb-Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
Device NCP1117LPST15T3G NCP1117LPST18T3G NCP1117LPST25T3G SOT-223 NCP1117LPST33T3G (Pb-Free) NCP1117LPST50T3G NCP1117LPSTADT3G 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. 4000/Tape & Reel Package Shipping
Applications
TYPICAL APPLICATIONS
Input 3 Cin = 10 mF
+
NCP1117LP 1
2 Output
+
Input 3 Cin = 10 mF
+
NCP1117LP 1
2 Output
+
Cout = 10 mF
Cout = 10 mF
Figure 1. Fixed Output Regulator
Figure 2. Adjustable Output Regulator
(c) Semiconductor Components Industries, LLC, 2010
January, 2010 - Rev. 2
1
Publication Order Number: NCP1117LP/D
NCP1117LP
Figure 3. Block Diagram Table 1. PIN FUNCTION DESCRIPTION
Pin No. 1 2 3 Pin Name Adj (GND) Vout Vin Description A resistor divider from this pin to the Vout pin and ground sets the output voltage (Ground only for Fixed-Mode). The output of the regulator. A minimum of 10 mF capacitor (20 mW ESR 20 W) must be connected from this pin to ground to insure stability. The input pin of regulator. Typically a large storage capacitor (20 mW ESR 20 W) is connected from this pin to ground to insure that the input voltage does not sag below the minimum dropout voltage during the load transient response. This pin must always be 1.3 V (typ.) higher than Vout in order for the device to regulate properly.
Table 2. MAXIMUM RATINGS
Rating DC Input Voltage Operating Junction Temperature Range Operating Ambient Temperature Range Maximum Junction Temperature Range Power Dissipation and Thermal Characteristics - Power Dissipation (Note 1) - Thermal Resistance, Junction-to-Ambient (Note 2) - Thermal Resistance, Junction-to-Case Electrostatic Discharge Human Body Model Machine Model Storage Temperature Range NOTE: This device series contains ESD protection and exceeds the following tests: ESD HBM tested per AEC-Q100-002 (EIA/JESD22-A114) ESD MM tested per AEC-Q100-003 (EIA/JESD22-A115) Latch-up Current Maximum Rating: 150mA per JEDEC standard: JESD78 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. NOTE: All voltages are referenced to GND pin. 1. The maximum package power dissipation is: TSTG Symbol Vin TOP TA TJ(max) PD RqJA RqJC ESD Value -0.3 to 18 0 to 125 0 to 125 -55 to 150 Internally Limited 108 15 2000 200 -65 to 150 C Unit V C C C W C/W C/W V
PD +
T J(max) * T A R qJA
2. RqJA on a 100 x 100 mm PCB Cu thickness 1 oz; TA = 25C
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NCP1117LP
Table 3. ELECTRICAL CHARACTERISTICS (Cin = 10 mF, Cout = 10 mF, for typical value TA = 25C, for min and max values TA is
the operating ambient temperature range that applies unless otherwise noted.) Parameter Reference Voltage, Adjustable Output Devices Output Voltage, Fixed Output Devices NCP1117-ADJ NCP1117-1.5 NCP1117-1.8 NCP1117-2.5 NCP1117-3.3 NCP1117-5.0 Line Regulation, Adjustable & Fixed (Note 3) Load Regulation (Note 3) NCP1117-XXX Conditions TJ = 25C (Vin - Vout) = 1.5 V, Io = 10 mA TJ = 25C 3 V Vin 12 V, Io = 10 mA TJ = 25C 3.3 V Vin 12 V, Io = 10 mA TJ = 25C 4 V Vin 12 V, Io = 10 mA TJ = 25C 4.8 V Vin 12 V, Io = 10 mA TJ = 25C 6.5 V Vin 12 V, Io = 10 mA TJ = 25C Vout + 1.5 V < Vin < 12 V, Io = 10 mA TJ = 25C 10 mA < Io < 1 A, Vin = 3.3 V TJ = 25C 10 mA < Io < 1 A, Vin = 3 V TJ = 25C 10 mA < Io < 1 A, Vin = 3.3 V TJ = 25C 10 mA < Io < 1 A, Vin = 4 V TJ = 25C 10 mA < Io < 1 A, Vin = 4.7 V TJ = 25C 10 mA < Io < 1 A, Vin = 6.5 V Iout = 1 A, TA = 25C DVout = Vout - 100 mV Vin = 7 V, TA = 25C 0C Tj 125C Vin = 12 V Io = 10 mA TA = 25C, T = 30 ms pulse NCP1117-XXX NCP1117-XXX NCP1117-XXX F = 120 Hz, Cout = 25 mF tantalum, Iout = 1 A, Vin = Vout + 3 V RR Tshdn Thyst Iout ILmin IQFIX IQADJ 1.1 1 550 30 0.008 60 165 10 5 700 50 0.04 Regline Symbol Vref Vout Min 1.225 1.470 1.760 2.450 3.235 4.900 Typ 1.250 1.5 1.8 2.5 3.3 5 Max 1.275 1.530 1.840 2.550 3.365 5.100 0.2 Unit V V V V V V %
NCP1117-ADJ NCP1117-1.5 NCP1117-1.8 NCP1117-2.5 NCP1117-3.3 NCP1117-5.0
Regload 12 15 20 26 40 1.3
1 15 18 25 33 50 1.4
% mV mV mV mV mV V
Dropout Voltage (Vin - Vout), Adjustable & Fixed Current Limit, Adjustable & Fixed Minimum Load Current (Note 4) Quiescent Current
NCP1117-XXX
NCP1117-XXX NCP1117-XXX NCP1117-fixed NCP1117-ADJ
A mA mA mA %W dB C C
Thermal Regulation (Note 5) Ripple Rejection Thermal Shutdown Thermal Hysteresis
3. Low duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible. 4. Guaranteed by design. 5. Thermal Regulation is defined as the change in output voltage at a time after a change in power dissipation is applied, excluding load or line regulation effects. Specifications are for a current pulse equal to Iomax at VIN = VIN + 1.5 V for T = 30 msec. Guaranteed by characterization.
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NCP1117LP
TYPICAL CHARACTERISTICS
1.25 1.20 1.15 1.10 1.05 1.00 -40 1.36 1.34 DROPOUT VOLTAGE (V) DROPOUT VOLTAGE (V) 120 1.32 1.30 1.28 1.26 1.24 1.22 1.20 -20 0 20 40 60 80 100 1.18 -40 -20 0 20 40 60 80 100 120
TA, AMBIENT TEMPERATURE (C)
TA, AMBIENT TEMPERATURE (C)
Figure 4. Dropout Voltage vs. Temperature Iload = 10 mA
0.100 OUTPUT VOLTAGE DEVIATION (%) 0.095 0.090 0.085 0.080 0.075 0.070 0.065 0.060 0.055 0.050 -40 -20 OUTPUT VOLTAGE DEVIATION (%) 0.45 0.40 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0 -40
Figure 5. Dropout Voltage vs. Temperature Iload = 1 A
0
20
40
60
80
100
120
-20
0
20
40
60
80
100
120
TA, AMBIENT TEMPERATURE (C)
TA, AMBIENT TEMPERATURE (C)
Figure 6. Line Regulation vs. Temperature Iload = 10 mA
OUTPUT SHORT CIRCUIT CURRENT (A) 1.510 1.508 OUTPUT VOLTAGE (V) 1.506 1.504 1.502 1.500 1.498 1.496 1.494 -40 -20 0 20 40 60 80 100 120 2.5 2.0 1.5 1.0 0.5 0 -40
Figure 7. Load Regulation vs. Temperature Iload = 1 A
-20
0
20
40
60
80
100
120
TA, AMBIENT TEMPERATURE (C)
TA, AMBIENT TEMPERATURE (C)
Figure 8. Output Voltage vs. Temperature Iload = 10 mA
Figure 9. Output Short Circuit Current vs. Temperature
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NCP1117LP
TYPICAL CHARACTERISTICS
570 QUIESCENT CURRENT (mA) 560 DROPOUT VOLTAGE (V) 550 540 530 520 510 500 490 480 -40 -20 0 20 40 Vin = 12 V Iload = 10 mA Cin = Cout = 10 mF 60 80 100 120 1.21 1.20 1.19 1.18 1.17 1.16 1.15 1.14 1.13 1.12 0.1 0.2 0.3 0.4 0.5 DVout = Vout - 100 mV Cin = Cout = 10 mF TJ = 25C 0.6 0.7 0.8 0.9 1.0 Iout, OUTPUT CURRENT (A)
TA, AMBIENT TEMPERATURE (C)
Figure 10. Quiescent Current vs. Temperature Iload = 10 mA
100 90 80 70 ESR (mW) 60 50 40 30 20 10 0 0 0.2 Region of Instability 0.4 0.6 0.8 1.0 Region of Stability OUTPUT CAPACITANCE (mF) Vin = 3 V Vout = 1.25 V Cin = 10 mF MLCC Cout = 10 mF MLCC TJ = 25C 100
Figure 11. Dropout Voltage vs. Output Current
10 Region of Instability
Region of Stability
1.0
0.1 0.001
Vin = 3 V Vout = 1.25 V Iload = 5 mA - 1 A Cin = 10 mF MLCC TJ = 25C 0.01 0.1 1 ESR, EQUIVALENT SERIES RESISTANCE (W)
Iout, OUTPUT CURRENT (A)
Figure 12. Equivalent Series Resistance vs. Output Current - MLCC Capacitor
80 RR, RIPPLE REJECTION (dB) RR, RIPPLE REJECTION (dB) 70 60 50 40 30 20 10 0 0 fripple = 120 Hz Cin = 22 mF Tantalum Cout = 22 mF Tantalum Vin - Vout = 3 V TA = 25C 100 200 300 400 500 600 700 800 900 1000 Iout, OUTPUT CURRENT (A) 70 60 50 40 30 20 10 0 0
Figure 13. Output Capacitance vs. ESR MLCC Capacitor
fripple = 120 Hz Cin = 22 mF Tantalum Cout = 22 mF Tantalum Vin - Vout = 3 V TA = 25C 100 200 300 400 500 600 700 800 900 1000 Iout, OUTPUT CURRENT (A)
Figure 14. Ripple Rejection vs. Output Current - 1.5 V
Figure 15. Ripple Rejection vs. Output Current -5V
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NCP1117LP
TYPICAL CHARACTERISTICS
120 RR, RIPPLE REJECTION (dB) 100 80 60 40 20 0 10 1A 0.5 A 0.01 A 0.1 A Cin = 10 mF Tantalum Cout = 10 mF Tantalum Vin - Vout = 3 V 0.5 Vpp TA = 25C 450E-9 400E-9 350E-9 300E-9 V/sqrt (Hz) 250E-9 200E-9 150E-9 100E-9 50E-9 100 1000 10000 100000 0 10 Cin = 10 mF Tantalum Cout = 10 mF Tantalum Vin - Vout = 3 V TA = 25C 100 1000 10000 100000 1000000 0.1 A 1A 0.5 A
fripple, RIPPLE FREQUENCY (Hz)
FREQUENCY (Hz)
Figure 16. Ripple Rejection vs. Frequency - Vout = 1.5 V
INPUT VOLTAGE (V) 1 V/ms
Figure 17. Output Spectral Noise Density vs. Frequency - Vout = 1V5
4.0 3.0 50 0 -50
Cin = 1.0 mF* Cout = 10 mF* Iout = 0.1 A TA = 25C
Cin = 1.0 mF* Cout = 10 mF* Iout = 0.5 A TA = 25C
OUTPUT VOLTAGE DEVIATION (mV)
*Tantalum Capacitors
*Tantalum Capacitors
Figure 18. Line Transient Response - Vout = 1.5 V
Figure 19. Line Transient Response - Vout = 1.5 V
INPUT VOLTAGE (V) 1 V/ms
4.3 3.3 50 0 -50
Cin = 1.0 mF* Cout = 10 mF* Iout = 0.1 A TA = 25C
Cin = 1.0 mF* Cout = 10 mF* Iout = 0.5 A TA = 25C
OUTPUT VOLTAGE DEVIATION (mV)
*Tantalum Capacitors
*Tantalum Capacitors
Figure 20. Line Transient Response - Vout = 1.8 V
Figure 21. Line Transient Response - Vout = 1.8 V
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NCP1117LP
TYPICAL CHARACTERISTICS
INPUT VOLTAGE (V) 1 V/ms
5.0 4.0 50 0 -50
Cin = 1.0 mF* Cout = 10 mF* Iout = 0.1 A TA = 25C
Cin = 1.0 mF* Cout = 10 mF* Iout = 0.5 A TA = 25C
OUTPUT VOLTAGE DEVIATION (mV)
*Tantalum Capacitors
*Tantalum Capacitors
Figure 22. Line Transient Response - Vout = 2.5 V
Figure 23. Line Transient Response - Vout = 2.5 V
INPUT VOLTAGE (V) 1 V/ms
5.5 4.5 50 0 -50
Cin = 1.0 mF* Cout = 10 mF* Iout = 0.1 A TA = 25C
Cin = 1.0 mF* Cout = 10 mF* Iout = 0.5 A TA = 25C
OUTPUT VOLTAGE DEVIATION (mV)
*Tantalum Capacitors
*Tantalum Capacitors
Figure 24. Line Transient Response - Vout = 3.3 V
Figure 25. Line Transient Response - Vout = 3.3 V
INPUT VOLTAGE (V) 1 V/ms
7.5 6.5 50 0 -50
Cin = 1.0 mF* Cout = 10 mF* Iout = 0.1 A TA = 25C
Cin = 1.0 mF* Cout = 10 mF* Iout = 0.5 A TA = 25C
OUTPUT VOLTAGE DEVIATION (mV)
*Tantalum Capacitors
*Tantalum Capacitors
Figure 26. Line Transient Response - Vout = 5.0 V
Figure 27. Line Transient Response - Vout = 5.0 V
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NCP1117LP
TYPICAL CHARACTERISTICS
OUTPUT VOLTAGE LOAD CURRENT DEVIATION (mV) CHANGE (A) 0.5A/ms
OUTPUT VOLTAGE LOAD CURRENT DEVIATION (mV) CHANGE (A) 0.5A/ms
0.5 0.2 20 0 -20
Cin = 10 mF* Cout = 10 mF* Vin = 3.3 V Preload=0.1A TA = 25C
0.5
0.2 20 0 -20
Cin = 10 mF* Cout = 10 mF* Vin = 3.3 V Preload=0.1A TA = 25C
*Tantalum Capacitors
*Tantalum Capacitors
Figure 28. Load Transient Response - Vout = 1.8 V
Figure 29. Load Transient Response - Vout = 2.5 V
OUTPUT VOLTAGE LOAD CURRENT DEVIATION (mV) CHANGE (A) 0.5A/ms
0.5
0.2 50 0 -50
Cin = 10 mF* Cout = 10 mF* Vin = 3.3 V Preload=0.1A TA = 25C
OUTPUT VOLTAGE LOAD CURRENT DEVIATION (mV) CHANGE (A) 0.5A/ms
0.5
0.2 50 0 -50
Cin = 10 mF* Cout = 10 mF* Vin = 3.3 V Preload=0.1A TA = 25C
*Tantalum Capacitors
*Tantalum Capacitors
Figure 30. Load Transient Response - Vout = 3.3 V
Figure 31. Load Transient Response - Vout = 5.0 V
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NCP1117LP
TYPICAL CHARACTERISTICS
125 120 115 110 105 Theta JA (C/W) 100 95 90 85 80 75 70 65 60 0 100 200 300 Copper heat spreader area (mm^2) 400 Theta JA curve with PCB cu thk 2.0 oz 0.6 0.4 0.2 0.0 500 Theta JA curve with PCB cu thk 1.0 oz 1.0 0.8 Power curve with PCB cu thk 1.0 oz 1.4 1.2 Max Power (W) Power curve with PCB cu thk 2.0 oz 1.8 1.6
Figure 32. SOT-223 Thermal Resistance and Maximum Power Dissipation vs. P.C.B. Copper Length
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NCP1117LP
APPLICATIONS INFORMATION
Introduction
The NCP1117LP is a low dropout positive fixed or adjustable mode regulator with 1 A output capability. This LDO is guaranteed to have a significant reduction in dropout voltage along with enhanced output voltage accuracy and temperature stability when compared to older industry standard three-terminal adjustable regulators. These devices contain output current limiting, safe operating area compensation and thermal shutdown protection making them designer friendly for powering numerous consumer and industrial products. The NCP1117LP series is pin compatible with the older NCP1117.
Output Voltage
Frequency compensation for the regulator is provided by capacitor Cout and its use is mandatory to ensure output stability. A minimum capacitance value of 4.7 mF with an equivalent series resistance (ESR) that is within the limits of 20 mW to 20 W is required. The capacitor type can be ceramic, tantalum, or aluminum electrolytic as long as it meets the minimum capacitance value and ESR limits over the circuit's entire operating temperature range. Higher values of output capacitance can be used to enhance loop stability and transient response with the additional benefit of reducing output noise.
Input Cin 3
+
The typical application circuits for the fixed and adjustable output regulators are shown in Figures 33 and 34. The adjustable devices are floating voltage regulators. They develop and maintain the nominal 1.25 V reference voltage between the output and adjust pins. The reference voltage is programmed to a constant current source by resistor R1, and this current flows through R2 to ground to set the output voltage. The programmed current level is usually selected to be greater than the specified 5.0 mA minimum that is required for regulation. Since the adjust pin current, Iadj, is significantly lower and constant with respect to the programmed load current, it generates a small output voltage error that can usually be ignored. For the fixed output devices R1 and R2 are included within the device and the ground current Ignd is 550 mA (typ).
External Capacitors
NCP1117LP 1 Iadj R2
2 Vref R1
+
Output
+
Cout
Cadj
Vout + Vref 1 ) R2 ) R2 @ Iadj R1
Figure 34. Adjustable Output Regulator
Input bypass capacitor Cin may be required for regulator stability if the device is located more than a few inches from the power source. This capacitor will reduce the circuit's sensitivity when powered from a complex source impedance and significantly enhance the output transient response. The input bypass capacitor should be mounted with the shortest possible track length directly across the regulator's input and ground terminals. A 10 mF ceramic or tantalum capacitor should be adequate for most applications.
Input Cin 3
+
The output ripple will increase linearly for fixed and adjustable devices as the ratio of output voltage to the reference voltage increases. For example, with a 5 V regulator, the output ripple will increase by 5 V/1.25 V or 4 and the ripple rejection will decrease by 20 log of this ratio or 12 dB. The loss of ripple rejection can be restored to the values shown with the addition of bypass capacitor Cadj, shown in Figure 34. The reactance of Cadj at the ripple frequency must be less than the resistance of R1. The value of R1 can be selected to provide the minimum required load current to maintain regulation and is usually in the range of 100 W to 200 W.
Cadj u 1 2p @ fripple @ R1
NCP1117LP 1 Ignd
2
+
Output Cout
The minimum required capacitance can be calculated from the above formula. When using the device in an application that is powered from the AC line via a transformer and a full wave bridge, the value for Cadj is:
fripple + 120 Hz, R1 + 120 W, then Cadj u 11.1 mF
Figure 33. Fixed Output Regulator
The value for Cadj is significantly reduced in applications where the input ripple frequency is high. If used as a post regulator in a switching converter under the following conditions:
fripple + 50 kHz, R1 + 120 W, then Cadj u 0.027 mF
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NCP1117LP
Protection Diodes
Input
The NCP1117LP family has two internal low impedance diode paths that normally do not require protection when used in the typical regulator applications. The first path connects between Vout and Vin, and it can withstand a peak surge current of about 15 A. Normal cycling of Vin cannot generate a current surge of this magnitude. Only when Vin is shorted or crowbarred to ground and Cout is greater than 50 mF, it becomes possible for device damage to occur. Under these conditions, diode D1 is required to protect the device. The second path connects between Cadj and Vout, and it can withstand a peak surge current of about 150 mA. Protection diode D2 is required if the output is shorted or crowbarred to ground and Cadj is greater than 1.0 mF.
D1
3
+
NCP1117LP 1
2
+
RW+ Cout
Output Remote Load
Cin
R1
R2
RW-
Figure 36. Load Sensing Thermal Considerations
Input Cin
+
3
NCP1117LP 1 R2
2 R1
+
Output D2
+
Cout
Cadj
This series contains an internal thermal limiting circuit that is designed to protect the regulator in the event that the maximum junction temperature is exceeded. When activated, typically at 165C, the regulator output switches off and then back on as the die cools. As a result, if the device is continuously operated in an overheated condition, the output will appear to be oscillating. This feature provides protection from a catastrophic device failure due to accidental overheating. It is not intended to be used as a substitute for proper heatsinking. The maximum device power dissipation can be calculated by:
PD + TJ(max) * TA RqJA
Figure 35. Protection Diode Placement
A combination of protection diodes D1 and D2 may be required in the event that Vin is shorted to ground and Cadj is greater than 50 mF. The peak current capability stated for the internal diodes are for a time of 100 ms with a junction temperature of 25C. These values may vary and are to be used as a general guide.
Load Regulation
The NCP1117LP series is capable of providing excellent load regulation; but since these are three terminal devices, only partial remote load sensing is possible. There are two conditions that must be met to achieve the maximum available load regulation performance. The first is that the top side of programming resistor R1 should be connected as close to the regulator case as practicable. This will minimize the voltage drop caused by wiring resistance RW + from appearing in series with reference voltage that is across R1. The second condition is that the ground end of R2 should be connected directly to the load. This allows true Kelvin sensing where the regulator compensates for the voltage drop caused by wiring resistance RW -.
The devices are available in surface mount SOT-223 package. This package has an exposed metal tab that is specifically designed to reduce the junction to air thermal resistance, RqJA, by utilizing the printed circuit board copper as a heat dissipater. Figure 32 shows typical RqJA values that can be obtained from a square pattern using economical single sided 1.0 oz and 2.0 oz copper board material. The final product thermal limits should be tested and quantified in order to insure acceptable performance and reliability. The actual RqJA can vary considerably from the graphs shown. This will be due to any changes made in the copper aspect ratio of the final layout, adjacent heat sources, and air flow.
Constant Current Output
+
Input 10 mF
3
+
NCP1117LP 1
2
R
10 mF
V Iout + ref ) Iadj R
Figure 37. Constant Current Regulator
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NCP1117LP
Input Input 10 mF 3
+
3
+
NCP1117LP 1 R2
2 R1
+
Output 10 mF
NCP1117LP 1
2 R1
+
Output 10 mF
10 mF
50 k
1N4001
R2
2N2907
10 mF
2N2222
Figure 38. Slow Turn-On Regulator
Output Voltage Control Resistor R2 sets the maximum output voltage. Each transistor reduces the output voltage when turned on.
Figure 39. Digitally Controlled Regulator
Input 10 mF
+
3
NCP1117LP 1
2 120
Output
+ 10
Input 10 mF
+
3
NCP1117LP 1 2.0 k
2
Output 5.0 V to 12 V + 10 mF
mF
+ 10
Output Control On Off
1.0 k 1.0 k
2N2222
360
mF
Figure 41. Adjusting Output of Fixed Voltage Regulators
Vout(Off) + Vref
Figure 40. Regulator with Shutdown
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NCP1117LP
PACKAGE DIMENSIONS
SOT-223 ST SUFFIX CASE 318H-01 ISSUE O
E H 0.2
M
0.08 CB
S
C B
S
B A D
2 4
B E1
1
0.1
A
b
e1
M
CA
e
S
3
NOTES: 1. DIMENSIONS ARE IN MILLIMETERS. 2. INTERPRET DIMENSIONS AND TOLERANCES PER ASME Y14.5M, 1994. 3. DIMENSION E1 DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSION. INTERLEAD FLASH OR PROTRUSION SHALL NOT EXCEED 0.23 PER SIDE. 4. DIMENSIONS b AND b2 DO NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.08 TOTAL IN EXCESS OF THE b AND b2 DIMENSIONS AT MAXIMUM MATERIAL CONDITION. 5. TERMINAL NUMBERS ARE SHOWN FOR REFERENCE ONLY. 6. DIMENSIONS D AND E1 ARE TO BE DETERMINED AT DATUM PLANE H. MILLIMETERS MIN MAX --1.80 0.02 0.11 0.60 0.88 0.60 0.80 2.90 3.10 2.90 3.05 0.24 0.35 0.24 0.30 6.30 6.70 6.70 7.30 3.30 3.70 2.30 4.60 --0.25 0_ 10_
b2 0.1
M
CA
S
B
S
A
B (b)
A1 A
(b2)
T
L
c1
c
b3
b1
DIM A A1 b b1 b2 b3 c c1 D E E1 e
SECTION B-B
SECTION A-A
SOLDERING FOOTPRINT*
3.8 0.15 2.0 0.079
2.3 0.091
2.3 0.091
2.0 0.079
mm 1.5 SCALE 6:1 inches 0.059 *For additional information on our Pb-Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D.
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CCCCCCC EEEEEEE CCCCCCC EEEEEEE
T
e1 L
6.3 0.248
NCP1117LP
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
http://onsemi.com
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NCP1117LP/D


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