NCP1117 1.0 A Low-Dropout Positive Fixed and Adjustable Voltage Regulators The NCP1117 series are low dropout positive voltage regulators that are capable of providing an output current that is in excess of 1.0 A with a maximum dropout voltage of 1.2 V at 800 mA over temperature. This series contains eight fixed output voltages of 1.5 V, 1.8 V, 2.0 V, 2.5 V, 2.85 V, 3.3 V, 5.0 V, and 12 V that have no minimum load requirement to maintain regulation. Also included is an adjustable output version that can be programmed from 1.25 V to 18.8 V with two external resistors. On chip trimming adjusts the reference/output voltage to within ±1.0% accuracy. Internal protection features consist of output current limiting, safe operating area compensation, and thermal shutdown. The NCP1117 series can operate with up to 20 V input. Devices are available in SOT–223 and DPAK packages. http://onsemi.com Tab 1 123 3 (Top View) Pin: 1. Adjust/Ground 2. Output 3. Input Heatsink tab is connected to pin 2. Features Tab • Output Current in Excess of 1.0 A • 1.2 V Maximum Dropout Voltage at 800 mA Over Temperature • Fixed Output Voltages of 1.5 V, 1.8 V, 2.0 V, 2.5 V, 2.85 V, 3.3 V, • • • • • 1 2 1 3 (Top View) 3 5.0 V, and 12 V Adjustable Output Voltage Option No Minimum Load Requirement for Fixed Voltage Output Devices Reference/Output Voltage Trimmed to ±1.0% Current Limit, Safe Operating and Thermal Shutdown Protection Operation to 20 V Input DPAK DT SUFFIX CASE 369A ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 11 of this data sheet. DEVICE MARKING INFORMATION Applications • • • • • SOT–223 ST SUFFIX CASE 318H See general marking information in the device marking section on page 12 of this data sheet. Consumer and Industrial Equipment Point of Regulation Active SCSI Termination for 2.85 V Version Switching Power Supply Post Regulation Hard Drive Controllers Battery Chargers TYPICAL APPLICATIONS 110 Input 10 F 3 + NCP1117 XTXX Input 3 10 F + 2 Output + 10 1 Semiconductor Components Industries, LLC, 2001 3 2 Output 10 F + 10 1 F 4.75 V to 5.25 V F Figure 1. Fixed Output Regulator November, 2001 – Rev. 2 NCP1117 XTA Figure 2. Adjustable Output Regulator + + NCP1117 XT285 1 110 2 + 22 F 110 18 to 27 Lines 110 Figure 3. Active SCSI Bus Terminator 1 Publication Order Number: NCP1117/D NCP1117 MAXIMUM RATINGS Rating Symbol Value Unit Vin 20 V – Infinite – PD RJA RJC Internally Limited 160 15 W °C/W °C/W PD RJA RJC Internally Limited 67 6.0 W °C/W °C/W Operating Junction Temperature Range TJ –55 to 150 °C Storage Temperature Range Tstg –65 to 150 °C Input Voltage (Note 1) Output Short Circuit Duration (Notes 2 and 3) Power Dissipation and Thermal Characteristics Case 318H (SOT–223) Power Dissipation (Note 2) Thermal Resistance, Junction–to–Ambient, Minimum Size Pad Thermal Resistance, Junction–to–Case Case 369A (DPAK) Power Dissipation (Note 2) Thermal Resistance, Junction–to–Ambient, Minimum Size Pad Thermal Resistance, Junction–to–Case 1. This device series contains ESD protection and exceeds the following tests: Human Body Model 2000 V per MIL–STD–883, Method 3015. Machine Model Method 200 V. 2. Internal thermal shutdown protection limits the die temperature to approximately 175°C. Proper heatsinking is required to prevent activation. The maximum package power dissipation is: TJ(max) TA RJA 3. The regulator output current must not exceed 1.0 A with Vin greater than 12 V. PD ELECTRICAL CHARACTERISTICS (Cin = 10 µF, Cout = 10 µF, for typical value TJ = 25°C, for min and max values TJ = 0°C to 125°C unless otherwise noted.) Characteristic Symbol Reference Voltage, Adjustable Output Devices (Vin–Vout = 2.0 V, Iout = 10 mA, TJ = 25°C) (Vin–Vout = 1.4 V to 10 V, Iout = 10 mA to 800 mA, TJ = 0°C to 125°C) Vref Output Voltage, Fixed Output Devices Vout Min Typ Max 1.238 1.225 1.25 – 1.262 1.270 V V 1.5 V (Vin = 3.5 V, Iout = 10 mA, TJ = 25 °C) (Vin = 2.9 V to 11.5 V, Iout = 0 mA to 800 mA, TJ = 0°C to 125°C) 1.485 1.470 1.500 – 1.515 1.530 1.8 V (Vin = 3.8 V, Iout = 10 mA, TJ = 25 °C) (Vin = 3.2 V to 11.8 V, Iout = 0 mA to 800 mA, TJ = 0°C to 125°C) 1.782 1.755 1.800 – 1.818 1.845 2.0 V (Vin = 4.0 V, Iout = 10 mA, TJ = 25 °C) (Vin = 3.4 V to 12 V, Iout = 0 mA to 800 mA, TJ = 0°C to 125°C) 1.970 1.960 2.000 – 2.030 2.040 2.5 V (Vin = 4.5 V, Iout = 10 mA, TJ = 25 °C) (Vin = 3.9 V to 10 V, Iout = 0 mA to 800 mA, TJ = 0°C to 125°C) 2.475 2.450 2.500 – 2.525 2.550 2.85 V (Vin = 4.85 V, Iout = 10 mA, TJ = 25 °C) (Vin = 4.25 V to 10 V, Iout = 0 mA to 800 mA, TJ = 0°C to 125°C) (Vin = 4.0 V, Iout = 0 mA to 500 mA, TJ = 0°C to 125°C) 2.821 2.790 2.790 2.850 – – 2.879 2.910 2.910 3.3 V (Vin = 5.3 V, Iout = 10 mA, TJ = 25 °C) (Vin = 4.75 V to 10 V, Iout = 0 mA to 800 mA, TJ = 0°C to 125°C) 3.267 3.235 3.300 – 3.333 3.365 5.0 V (Vin = 7.0 V, Iout = 10 mA, TJ = 25 °C) (Vin = 6.5 V to 12 V, Iout = 0 mA to 800 mA, TJ = 0°C to 125°C) 4.950 4.900 5.000 – 5.050 5.100 12 V (Vin = 14 V, Iout = 10 mA, TJ = 25 °C) (Vin = 13.5 V to 20 V, Iout = 0 mA to 800 mA, TJ = 0°C to 125°C) 11.880 11.760 12.000 – 12.120 12.240 http://onsemi.com 2 Unit NCP1117 ELECTRICAL CHARACTERISTICS (Cin = 10 µF, Cout = 10 µF, for typical value TJ = 25°C, for min and max values TJ = 0°C to 125°C unless otherwise noted.) Characteristic Symbol Min Typ Max Unit – – – – – – – – – 0.04 0.3 0.4 0.5 0.5 0.8 0.8 0.9 1.0 0.1 1.0 1.0 2.5 2.5 3.0 4.5 6.0 7.5 % – – – – – – – – – 0.2 2.3 2.6 3.0 3.3 3.8 4.3 6.7 16 0.4 5.5 6.0 6.0 7.5 8.0 10 15 28 – – – 0.95 1.01 1.07 1.10 1.15 1.20 Iout 1000 1500 2200 mA IL(min) – 0.8 5.0 mA – – – – – – – – 3.6 4.2 4.5 5.2 5.5 6.0 6.0 6.0 10 10 10 10 10 10 10 10 – 0.01 0.1 67 66 64 64 62 62 60 57 50 73 72 70 70 68 68 64 61 54 – – – – – – – – – Line Regulation (Note 4) Adjustable (Vin = 2.75 V to 16.25 V, Iout = 10 mA) 1.5 V (Vin = 2.9 V to 11.5 V, Iout = 0 mA) 1.8 V (Vin = 3.2 V to 11.8 V, Iout = 0 mA) 2.0 V (Vin = 3.4 V to 12 V, Iout = 0 mA) 2.5 V (Vin = 3.9 V to 10 V, Iout = 0 mA) 2.85 V (Vin = 4.25 V to 10 V, Iout = 0 mA) 3.3 V (Vin = 4.75 V to 15 V, Iout = 0 mA) 5.0 V (Vin = 6.5 V to 15 V, Iout = 0 mA) 12 V (Vin = 13.5 V to 20 V, Iout = 0 mA) Regline Load Regulation (Note 4) Adjustable (Iout = 10 mA to 800 mA, Vin = 4.25 V) 1.5 V (Iout = 0 mA to 800 mA, Vin = 2.9 V) 1.8 V (Iout = 0 mA to 800 mA, Vin = 3.2 V) 2.0 V (Iout = 0 mA to 800 mA, Vin = 3.4 V) 2.5 V (Iout = 0 mA to 800 mA, Vin = 3.9 V) 2.85 V (Iout = 0 mA to 800 mA, Vin = 4.25 V) 3.3 V (Iout = 0 mA to 800 mA, Vin = 4.75 V) 5.0 V (Iout = 0 mA to 800 mA, Vin = 6.5 V) 12 V (Iout = 0 mA to 800 mA, Vin = 13.5 V) Regline Dropout Voltage (Measured at Vout – 100 mV) (Iout = 100 mA) (Iout = 500 mA) (Iout = 800 mA) Vin–Vout Output Current Limit (Vin–Vout = 5.0 V, TJ = 25°C, Note 5) Minimum Required Load Current for Regulation, Adjustable Output Devices (Vin = 15 V) Quiescent Current 1.5 V (Vin = 11.5 V) 1.8 V (Vin = 11.8 V) 2.0 V (Vin = 12 V) 2.5 V (Vin = 10 V) 2.85 V (Vin = 10 V) 3.3 V (Vin = 15 V) 5.0 V (Vin = 15 V) 12 V (Vin = 20 V) % mV V IQ Thermal Regulation (TA = 25°C, 30 ms Pulse) mV mA %/W Ripple Rejection (Vin–Vout = 6.4 V, Iout = 500 mA, 10 Vpp 120 Hz Sinewave) Adjustable 1.5 V 1.8 V 2.0 V 2.5 V 2.85 V 3.3 V 5.0 V 12 V RR dB Adjustment Pin Current (Vin = 11.25 V, Iout = 800 mA) Iadj – 52 120 A Adjust Pin Current Change (Vin–Vout = 1.4 V to 10 V, Iout = 10 mA to 800 mA) Iadj – 0.4 5.0 A Temperature Stability ST – 0.5 – % Long Term Stability (TA = 25°C, 1000 Hrs End Point Measurement) St – 0.3 – % RMS Output Noise (f = 10 Hz to 10 kHz) N – 0.003 – %Vout 4. Low duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible. 5. The regulator output current must not exceed 1.0 A with Vin greater than 12 V. http://onsemi.com 3 1.4 2.0 Vin = Vout + 3.0 V Iout = 10 mA 1.5 Vin – Vout, DROPOUT VOLTAGE (V) Vout, OUTPUT VOLTAGE CHANGE (%) NCP1117 Adj, 1.5 V, 1.8 V, 2.0 V, 2.5 V 1.0 0.5 0 –0.5 2.85 V, 3.3 V, 5.0 V, 12.0 V –1.0 –1.5 –2.0 –50 –25 0 25 50 75 100 TJ = –40°C 1.0 0.8 TJ = 125°C 0.6 0.4 0.2 Load pulsed at 1.0% duty cycle 0 150 125 TJ = 25°C 1.2 0 200 400 600 800 TA, AMBIENT TEMPERATURE (°C) Iout, OUTPUT CURRENT (mA) Figure 4. Output Voltage Change vs. Temperature Figure 5. Dropout Voltage vs. Output Current 1000 2.0 2.0 Iout, OUTPUT CURRENT (A) Iout, OUTPUT CURRENT (A) TJ = 25°C 1.5 1.0 0.5 1.8 1.6 1.4 1.2 Vin = 5.0 V Load pulsed at 1.0% duty cycle Load pulsed at 1.0% duty cycle 0 2 4 6 8 10 12 14 16 18 1.0 –50 20 0 25 50 75 100 125 TA, AMBIENT TEMPERATURE (°C) Figure 6. Output Short Circuit Current vs. Differential Voltage Figure 7. Output Short Circuit Current vs. Temperature 100 Iadj, ADJUST PIN CURRENT (A) –25 Vin – Vout, VOLTAGE DIFFERENTIAL (V) IQ, QUIESCENT CURRENT CHANGE (%) 0 80 60 150 10 5.0 0 –5.0 40 20 0 –50 Iout = 10 mA –25 0 25 50 75 100 125 150 –10 –15 –20 –50 –25 0 25 50 75 100 125 TA, AMBIENT TEMPERATURE (°C) TA, AMBIENT TEMPERATURE (°C) Figure 8. Adjust Pin Current vs. Temperature Figure 9. Quiescent Current Change vs. Temperature http://onsemi.com 4 150 NCP1117 100 fripple = 120 Hz Vripple 3.0 VP–P 80 60 RR, RIPPLE REJECTION (dB) RR, RIPPLE REJECTION (dB) 100 fripple = 20 kHz Vripple 0.5 VP–P 40 Vout = 5.0 V Vin – Vout = 3.0 V Cout = 10 F Cadj = 25 F TA = 25°C 20 0 Vin – Vout 3.0 V 80 60 Vout = 5.0 V Vin – Vout = 3.0 V Iout = 0.5 A Cout = 10 F Cadj = 25 F, f > 60 Hz Cadj = 200 F, f 60 Hz TA = 25°C 40 20 400 600 800 1000 Vin – Vout Vdropout 100 1.0 k 10 k 100 k Figure 10. NCP1117XTA Ripple Rejection vs. Output Current Figure 11. NCP1117XTA Ripple Rejection vs. Frequency OUTPUT VOLTAGE DEVIATION (V) fripple, RIPPLE FREQUENCY (Hz) Cin = 1.0 F Cout = 10 F Iout = 0.1 A TA = 25°C 5.25 0.1 0 20 0 –20 80 120 160 0.5 0 200 0 40 80 120 t, TIME (s) Figure 12. NCP1117XT285 Line Transient Response Figure 13. NCP1117XT285 Load Transient Response Cin = 1.0 F Cout = 10 F Iout = 0.1 A TA = 25°C 7.5 20 0 –20 80 120 160 200 0 Cin = 10 F Cout = 10 F Vin = 6.5 V Preload = 0.1 A TA = 25°C 0.5 0 0 t, TIME (s) 40 80 120 160 t, TIME (s) Figure 14. NCP1117XT50 Line Transient Response Figure 15. NCP1117XT50 Load Transient Response http://onsemi.com 5 200 0.1 –0.1 6.5 40 160 t, TIME (s) OUTPUT VOLTAGE DEVIATION (V) 40 Cin = 10 F Cout = 10 F Vin = 4.5 V Preload = 0.1 A TA = 25°C –0.1 LOAD CURRENT CHANGE (A) 4.25 0 10 Iout, OUTPUT CURRENT (mA) LOAD CURRENT CHANGE (A) INPUT VOLTAGE (V) OUTPUT VOLTAGE DEVIATION (mV) 200 0 INPUT VOLTAGE (V) Vripple 0.5 VP–P 0 0 OUTPUT VOLTAGE DEVIATION (mV) Vripple 3.0 VP–P 200 OUTPUT VOLTAGE DEVIATION (V) Cin = 1.0 F Cout = 10 F Iout = 0.1 A TA = 25°C 14.5 0.1 0 Cin = 10 F Cout = 10 F Vin = 13.5 V Preload = 0.1 A TA = 25°C –0.1 LOAD CURRENT CHANGE (A) 13.5 20 0 –20 120 160 200 0 0 40 80 t, TIME (s) Figure 17. NCP1117XT12 Load Transient Response 180 1.6 160 1.4 PD(max) for TA = 50°C 140 ÎÎÎ ÎÎÎ ÎÎÎ 2.0 oz. Copper L Minimum Size Pad L 100 80 1.2 1.0 0.8 0.6 RθJA 60 0 5.0 10 15 20 25 L, LENGTH OF COPPER (mm) 0.4 30 Figure 18. SOT–223 Thermal Resistance and Maximum Power Dissipation vs. P.C.B. Copper Length 1.6 100 PD(max) for TA = 50°C 1.4 90 ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ 2.0 oz. Copper L 80 Minimum Size Pad 70 1.2 1.0 L 0.8 60 50 0.6 RθJA 40 0 160 t, TIME (s) Figure 16. NCP1117XT12 Line Transient Response 120 120 PD, MAXIMUM POWER DISSIPATION (W) 80 0.5 5.0 10 15 20 25 0.4 30 L, LENGTH OF COPPER (mm) Figure 19. DPAK Thermal Resistance and Maximum Power Dissipation vs. P.C.B. Copper Length http://onsemi.com 6 PD, MAXIMUM POWER DISSIPATION (W) 40 RJA, THERMAL RESISTANCE, JUNCTION–TO–AIR (°CW) 0 RJA, THERMAL RESISTANCE, JUNCTION–TO–AIR (°CW) OUTPUT VOLTAGE DEVIATION (mV) INPUT VOLTAGE (V) NCP1117 200 NCP1117 APPLICATIONS INFORMATION Introduction 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 µF with an equivalent series resistance (ESR) that is within the limits of 0.25 to 2.2 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. The NCP1117 features 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 NCP1117 series is pin compatible with the older LM317 and its derivative device types. Output Voltage Input The typical application circuits for the fixed and adjustable output regulators are shown in Figures 20 and 21. 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, ranges from 3.0 mA to 5.0 mA depending upon the output voltage. Cin Cin + NCP1117 XTXX 1 + R1 Vref 1 + + Cout Cadj Vout Vref 1 R2 Iadj R2 R1 Figure 21. Adjustable Output Regulator 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 12 V regulator, the output ripple will increase by 12 V/1.25 V or 9.6 and the ripple rejection will decrease by 20 log of this ratio or 19.6 dB. The loss of ripple rejection can be restored to the values shown with the addition of bypass capacitor Cadj, shown in Figure 21. 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 to 200 . Cadj 1 2 fripple R1 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: Output 2 Output 2 R2 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 µF ceramic or tantalum capacitor should be adequate for most applications. 3 + NCP1117 XTA Iadj External Capacitors Input 3 fripple 120 Hz, R1 120 , then Cadj 11.1 F 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: Cout Ignd fripple 50 kHz, R1 120 , then Cadj 0.027 F Figure 20. Fixed Output Regulator Figures 10 and 11 shows the level of ripple rejection that is obtainable with the adjust pin properly bypassed. http://onsemi.com 7 NCP1117 Protection Diodes 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 NCP1117 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 µF, 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 µF. Input Cin 3 + NCP1117 XTA RW+ 2 + R1 1 Cout Output Remote Load R2 RW– Figure 23. Load Sensing D1 Thermal Considerations 1N4001 Input Cin 3 + NCP1117 XTA 1 R1 + R2 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 175°C, 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: Output 2 D2 1N4001 + Cout Cadj Figure 22. 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 µF. The peak current capability stated for the internal diodes are for a time of 100 µs with a junction temperature of 25°C. These values may vary and are to be used as a general guide. PD TJ(max) TA RJA The devices are available in surface mount SOT–223 and DPAK packages. Each package has an exposed metal tab that is specifically designed to reduce the junction to air thermal resistance, RJA, by utilizing the printed circuit board copper as a heat dissipater. Figures 18 and 19 show typical RJA values that can be obtained from a square pattern using economical single sided 2.0 ounce copper board material. The final product thermal limits should be tested and quantified in order to insure acceptable performance and reliability. The actual RJA 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. Load Regulation The NCP1117 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. http://onsemi.com 8 NCP1117 Input NCP1117 XTA 3 + 10 F Constant Current Output R 2 + 1 Input + 10 F 10 F NCP1117 XTA 3 Output 2 + R1 1 50 k R2 2N2907 Figure 25. Slow Turn–On Regulator Input 3 10 F + NCP1117 XTA + Output 2 + R1 1 10 F Output 2 + 10 120 1 NCP1117 XTA 3 10 F Input 10 F 10 F V Iout ref Iadj R Figure 24. Constant Current Regulator 1N4001 R2 F 2N2222 360 1.0 k Output Control 2N2222 On 1.0 k Off Output Voltage Control Resistor R2 sets the maximum output voltage. Each transistor reduces the output voltage when turned on. Vout(Off) Vref Figure 26. Regulator with Shutdown Input 3 10 F + NCP1117 XT50 2 Figure 27. Digitally Controlled Regulator Output + 10 F 1 50 Input 5.3 V AC Line 5.0 V Battery RCHG 3 + 6.6 V – 10 F + NCP1117 XT50 10 F 2 3 + NCP1117 XT50 Output 5.0 V to 12 V + 10 2 F 1 + 10 2.0 k 1 F The 50 resistor that is in series with the ground pin of the upper regulator level shifts its output 300 mV higher than the lower regulator. This keeps the lower regulator off until the input source is removed. Figure 28. Battery Backed–Up Power Supply Figure 29. Adjusting Output of Fixed Voltage Regulators http://onsemi.com 9 NCP1117 MINIMUM RECOMMENDED FOOTPRINT FOR SURFACE MOUNTED APPLICATIONS The surface mount board layout is a critical portion of the total design. The footprint for the regulator package must be of correct size to insure a proper solder connection of the package tab and pins to the printed circuit board copper. With proper footprint pad sizes, the packages will self align when subjected to a solder reflow process. 0.15 3.8 0.079 2.0 0.091 2.3 0.165 4.191 0.248 6.3 0.091 2.3 0.100 2.54 0.118 3.0 0.063 1.6 0.079 2.0 0.190 4.826 0.059 1.5 0.059 1.5 0.059 1.5 0.243 6.172 inches inches mm mm DPAK, Case 369A SOT–223, Case 318H http://onsemi.com 10 NCP1117 ORDERING INFORMATION Nominal Output Voltage Package NCP1117DTA Adjustable DPAK 75 Units/Rail NCP1117DTARK Adjustable DPAK 2500 Units/Tape & Reel NCP1117STAT3 Adjustable SOT–223 4000 Units/Tape & Reel NCP1117DT15 1.5 DPAK 75 Units/Rail NCP1117DT15RK 1.5 DPAK 2500 Units/Tape & Reel NCP1117ST15T3 1.5 SOT–223 4000 Units/Tape & Reel NCP1117DT18 1.8 DPAK 75 Units/Rail NCP1117DT18RK 1.8 DPAK 2500 Units/Tape & Reel NCP1117ST18T3 1.8 SOT–223 4000 Units/Tape & Reel NCP1117DT20 2.0 DPAK 75 Units/Rail NCP1117DT20RK 2.0 DPAK 2500 Units/Tape & Reel NCP1117ST20T3 2.0 SOT–223 4000 Units/Tape & Reel NCP1117DT25 2.5 DPAK 75 Units/Rail NCP1117DT25RK 2.5 DPAK 2500 Units/Tape & Reel NCP1117ST25T3 2.5 SOT–223 4000 Units/Tape & Reel NCP1117DT285 2.85 DPAK 75 Units/Rail NCP1117DT285RK 2.85 DPAK 2500 Units/Tape & Reel NCP1117ST285T3 2.85 SOT–223 4000 Units/Tape & Reel NCP1117DT33 3.3 DPAK 75 Units/Rail NCP1117DT33RK 3.3 DPAK 2500 Units/Tape & Reel NCP1117ST33T3 3.3 SOT–223 4000 Units/Tape & Reel NCP1117DT50 5.0 DPAK 75 Units/Rail NCP1117DT50RK 5.0 DPAK 2500 Units/Tape & Reel NCP1117ST50T3 5.0 SOT–223 4000 Units/Tape & Reel NCP1117DT12 12 DPAK 75 Units/Rail NCP1117DT12RK 12 DPAK 2500 Units/Tape & Reel NCP1117ST12T3 12 SOT–223 4000 Units/Tape & Reel Device http://onsemi.com 11 Shipping NCP1117 MARKING DIAGRAMS SOT–223 ST SUFFIX CASE 318H ALYW 117–A 1 2 ALYW 17–15 1 3 Adjustable 2 ALYW 17–18 1 3 1.5 V 2 1 3 1.8 V 1 3 2.85 V 2 2 ALYW 17–25 1 3 2.0 V ALYW 17–33 ALYW 7–285 1 2 ALYW 117–2 1 3.3 V 2 3 2.5 V ALYW 117–5 3 2 ALYW 17–12 1 3 5.0 V 2 3 12 V DPAK DT SUFFIX CASE 369A 117AJ ALYWW 17–15 ALYWW 2 1 17–18 ALYWW 2 3 1 Adjustable 2 3 1 1.5 V 17285 ALYWW 17–33 ALYWW 1 2.85 V 1 2 3 1 2.0 V 117–5 ALYWW 2 3 17–25 ALYWW 2 3 1.8 V 2 1 117–2 ALYWW 2.5 V 17–12 ALYWW 2 3 1 3.3 V A L Y WW, W 2 3 5.0 V = Assembly Location = Wafer Lot = Year = Work Week http://onsemi.com 12 3 1 3 12 V NCP1117 PACKAGE DIMENSIONS SOT–223 ST SUFFIX CASE 318H–01 ISSUE O 0.08 E 0.2 M C B S C B S H e M C A S B S A M 0.1 B 0.1 e1 b D 2 A 4 b2 S 3 A 1 E1 A1 A B ÉÉÉÉÉÉÉ ÇÇÇÇÇÇ ÉÉÉÉÉÉÉ ÉÉ ÇÇ ÉÉ (b) (b2) c1 c b1 b3 SECTION B–B C A B L SECTION A–A 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. DIM A A1 b b1 b2 b3 c c1 D E E1 e e1 L http://onsemi.com 13 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 NCP1117 PACKAGE DIMENSIONS DPAK DT SUFFIX CASE 369A–13 ISSUE AB –T– C B V NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. SEATING PLANE E R 4 Z A S 1 2 3 U K F J L H D G 2 PL 0.13 (0.005) M T http://onsemi.com 14 DIM A B C D E F G H J K L R S U V Z INCHES MIN MAX 0.235 0.250 0.250 0.265 0.086 0.094 0.027 0.035 0.033 0.040 0.037 0.047 0.180 BSC 0.034 0.040 0.018 0.023 0.102 0.114 0.090 BSC 0.175 0.215 0.020 0.050 0.020 --0.030 0.050 0.138 --- MILLIMETERS MIN MAX 5.97 6.35 6.35 6.73 2.19 2.38 0.69 0.88 0.84 1.01 0.94 1.19 4.58 BSC 0.87 1.01 0.46 0.58 2.60 2.89 2.29 BSC 4.45 5.46 0.51 1.27 0.51 --0.77 1.27 3.51 --- NCP1117 Notes http://onsemi.com 15 NCP1117 ON Semiconductor and are 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. 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: [email protected] JAPAN: ON Semiconductor, Japan Customer Focus Center 4–32–1 Nishi–Gotanda, Shinagawa–ku, Tokyo, Japan 141–0031 Phone: 81–3–5740–2700 Email: [email protected] ON Semiconductor Website: http://onsemi.com For additional information, please contact your local Sales Representative. N. American Technical Support: 800–282–9855 Toll Free USA/Canada http://onsemi.com 16 NCP1117/D