NCP5663 Low Output Voltage, Ultra−Fast 3.0 A Low Dropout Linear Regulator with Enable The NCP5663 is a high performance, low dropout linear regulator designed for high power applications that require up to 3.0 A current. It is offered in both fixed and adjustable output versions. With output voltages as low as 0.9 V and ultra−fast response times for load transients, the NCP5663 also provides additional features such as Enable and Error Flag (for the fixed output version), increasing the utility of this device. A thermally robust, 5 pin D2Pak, combined with an architecture that offers low ground current (independent of load), provides for a superior high−current LDO solution. Features • • • • • • • • • • • Ultra−Fast Transient Response (Settling Time: 1−3 ms) Low Noise Without Bypass Capacitor (28 mVrms) Low Ground Current Independent of Load (3.0 mA Maximum) Fixed/Adjustable Output Voltage Versions Enable Function Error Flag (Fixed Output Version) Current Limit Protection Thermal Protection 0.9 V Reference Voltage for Ultra−Low Output Operation Power Supply Rejection Ratio > 65 dB This is a Pb−Free Device Applications • • • • • • Servers ASIC Power Supplies Post Regulation for Power Supplies Constant Current Source Networking Equipment Gaming and STB Modules © Semiconductor Components Industries, LLC, 2005 June, 2005 − Rev. 2 http://onsemi.com MARKING DIAGRAM NC P5663DSy AWYYWWG 1 5 D2PAK CASE 936AA 1 Tab = Ground Pin 1. Enable 2. Vin 3. Ground 4. Vout 5. Adj (adjustable output) 5. Error Flag (fixed output) y = A for Adjustable Version B for Fixed 1.5 V Version A = Assembly Location W = Wafer Lot Y = Year WW = Work Week G = Pb−Free ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 11 of this data sheet. 1 Publication Order Number: NCP5663/D NCP5663 PIN FUNCTION DESCRIPTION Pin Adj/Fixed Pin Name Description 1 Enable This pin allows for on/off control of the regulator. To disable the device, connect to Ground. If this function is not in use, connect to Vin. 2 Vin 3 Ground 4 Vout 5 Adj (Adjustable Version) 5 Error Flag (Fixed Version) Positive Power Supply Input Voltage Power Supply Ground Regulated Output Voltage This pin is connected to the resistor divider network and programs the output voltage. An Error Flag is triggered when the output voltage is out of regulation excluding transient signals that may occur. Requires a pullup resistor f 100 kW. ABSOLUTE MAXIMUM RATINGS Rating Symbol Value Unit Input Voltage Vin 18 V Output Pin Voltage Vout −0.3 to Vin +0.3 V Adjust Pin Voltage Vadj −0.3 to Vin +0.3 V Enable Pin Voltage Ven −0.3 to Vin +0.3 V Error Flag Voltage Vef −0.3 to Vin +0.3 V Error Flag Current Ief 3.0 mA RθJA RθJC 45 5.0 Operating Junction Temperature Range TJ −40 to +150 °C Storage Temperature Range Tstg −55 to +150 °C °C/W Thermal Characteristics Thermal Resistance Junction−to−Air Thermal Resistance Junction−to−Case Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied, damage may occur and reliability may be affected. NOTE: This device series contains ESD protection and exceeds the following tests: Human Body Model (HBM) JESD 22−A114−B Machine Model (MM) JESD 22−A115−A. The maximum package power dissipation is: *T T J(max) A P + D R qJA The bipolar process employed for this IC is fully characterized and rated for reliable 18 V VCCmax operation. To avoid damaging the part or degrading it’s reliability, power dissipation transients should be limited to under 30 W for D2PAK. For open−circuit to short−circuit transient, PDTransient = VCCmax * ISC. http://onsemi.com 2 NCP5663 ELECTRICAL CHARACTERISTICS (Vin − Vout = 1.5 V, for typical values TJ = 25°C, for min/max values TJ = −40°C to 85°C, Cin = Cout = 150 mF unless otherwise noted.) Characteristic Symbol Min Typ Max Unit Input Voltage Vin 2.0 − 9.0 V Output Noise Voltage Vn − 28 − mVrms −1% −1.5% −2% − 0.9 − +1% +1.5% +2% ADJUSTABLE OUTPUT VERSION Output Voltage Accuracy TJ = 25°C (Vin = Vout +1.5 V to 7.0 V, Iout = 10 mA to 3.0 A) TJ = −20 to +125°C (Vin = Vout +1.5 V to 7.0 V, Iout = 10 mA to 3.0 A) TJ = −40 to +150°C (Vin = Vout +1.5 V to 7.0 V, Iout = 10 mA to 3.0 A) Vout Adjustable Pin Input Current Iadj − 40 − nA Line Regulation (Iout = 10 mA, Vout+1.5 V < Vin < 7.0 V) REGline − 0.03 − % Load Regulation (10 mA < Iout < 3.0 A) REGload − 0.03 − % Dropout Voltage (Iout = 3.0 A) VDO − 1.0 1.3 V Peak Output Current Limit Iout 3.0 − − A Internal Current Limitation Ilim − 4.5 − A Ripple Rejection (120 Hz) Ripple Rejection (1 kHz) RR − − 70 65 − − dB TSHD − 160 − °C Iq Iqds − − 1.3 10 3.0 300 mA mA 1.3 − − − − 0.3 − − 0.5 0.5 − − Thermal Shutdown (Guaranteed by Design) V Ground Current Iout = 3.0 A Disabled State Enable Input Threshold Voltage Ven Voltage Increasing, On state, Logic High Voltage Decreasing, Off state, Logic Low Enable Input Current V Ien Enable Pin Voltage = 0.3 Vmax Enable Pin Voltage = 1.3 Vmin http://onsemi.com 3 mA NCP5663 ELECTRICAL CHARACTERISTICS (Vin − Vout = 1.5 V, for typical values TJ = 25°C, for min/max values TJ = −40°C to 85°C, Cin = Cout = 150 mF unless otherwise noted.) Characteristic Symbol Min Typ Max Unit Input Voltage Vin 2.0 − 9.0 V Output Noise Voltage (Vout = 0.9 V) Vn − 28 − mVrms −1% −1.5% −2% − Vout − +1% +1.5% +2% FIXED OUTPUT VOLTAGE Output Voltage Accuracy (Note 1) TJ = 25°C (Vin = Vout +1.5 V to 7.0 V, Iout = 10 mA to 3.0 A) TJ = −20 to +125°C (Vin = Vout +1.5 V to 7.0 V, Iout = 10 mA to 3.0 A) TJ = −40 to +150°C (Vin = Vout +1.5 V to 7.0 V, Iout = 10 mA to 3.0 A) Vout V Line Regulation (Iout = 10 mA, Vout+1.5 V < Vin < 7.0 V) REGline − 0.03 − % Load Regulation (10 mA < Iout < 3.0 A) REGload − 0.2 − % Dropout Voltage (Iout = 3.0 A) VDO − 1.0 1.3 V Peak Output Current Limit Iout 3.0 − − A Internal Current Limitation Ilim − 4.5 − A Ripple Rejection (120 Hz) Ripple Rejection (1 kHz) RR − − 70 65 − − dB TSHD − 160 − °C Iq Iqds − − 1.3 30 3.0 300 mA mA 1.3 − − − − 0.3 − − 0.5 0.5 − − mA Thermal Shutdown (Guaranteed by Design) Ground Current Iout = 3.0 A Disabled State Enable Input Threshold Voltage Ven Voltage Increasing, On state, Logic High Voltage Decreasing, Off state, Logic Low Enable Input Current V Ien Enable Pin Voltage = 0.3 Vmax Enable Pin Voltage = 1.3 Vmin Error Flag (Fixed Output) Vcflt 91 94 97 % of Vout Error Flag Output Low Voltage Saturation (Ief = 1.0 mA) Vcfdo − 200 − mV Error Flag Leakage Iefleak − 1.0 − mA Tef − 50 − ms Error Flag Blanking Time (Note 2) 1. Fixed output voltages available at 0.9 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.0 V, 3.3 V per request. 2. Can be disabled per customer request. http://onsemi.com 4 NCP5663 Vin IN ON Cin Enable Block Voltage Reference Block EN OFF Vref = 0.9 V R3 Vout Output Stage Ck R1 ADJ R4 Cout R2 GND R1 + R2 ǒVVout * 1Ǔ ref GND Figure 1. Typical Schematic, Adjustable Output Version Vin IN ON Cin EN Enable Block Voltage Reference Block R3 Rflag OFF Vref = 0.9 V Vout Output Stage Cc R1 Cout R4 R2 Error Flag GND GND Figure 2. Typical Schematic, Fixed Output Version http://onsemi.com 5 EF NCP5663 1.30 Iout = 3.0 A VDO, DROPOUT VOLTAGE (V) VDO, DROPOUT VOLTAGE (V) 1.2 1.0 Iout = 300 mA 0.8 0.6 0.4 0.2 0.0 −50 −25 0 25 50 75 100 125 1.00 0.90 0.80 0.70 3.0 −25 0 25 50 75 100 125 4.50 4.25 4.00 3.75 Vin = 2.5 V Cin = 150 mF 3.50 3.25 3.00 −50 150 −25 0 25 50 75 100 125 TJ, JUNCTION TEMPERATURE (°C) TJ, JUNCTION TEMPERATURE (°C) Figure 3. Ground Current vs. Temperature Figure 4. Short Circuit Current Limit vs. Temperature 150 910 Vout, OUTPUT VOLTAGE (mV) Vout, OUTPUT VOLTAGE (mV) 2.5 4.75 910 Iout = 10 mA Cin = 150 mF Cout = 1.0 to 150 mF TJ = 25°C 900 898 896 894 892 890 1.0 2.0 5.00 0.5 902 1.5 Figure 2. Dropout Voltage vs. Output Current 1.0 904 1.0 Figure 1. Dropout Voltage vs. Temperature 1.5 906 0.5 Iout, OUTPUT CURRENT (A) 2.0 908 0 TJ, JUNCTION TEMPERATURE (°C) ISC, SHORT CIRCUIT LIMIT (A) IGND, GROUND CURRENT (mA) 1.10 150 2.5 0.0 −50 Vout = 2.5 V Cin = 150 mF Cout = 10 to 150 mF TJ = 25°C 1.20 908 Vin = 3.3 V Iout = 3.0 A maximum Cin = 150 mF Cout = 1.0 to 150 mF TJ = 25°C 906 904 902 900 898 896 894 892 2.0 3.0 4.0 5.0 6.0 7.0 8.0 890 9.0 0 0.5 1.0 1.5 2.0 2.5 3.0 Vin, INPUT VOLTAGE (V) Iout, OUTPUT CURRENT (A) Figure 5. Output Voltage vs. Input Voltage Figure 6. Output Voltage vs. Output Load Current http://onsemi.com 6 NCP5663 1.2 90 OUTPUT CURRENT (A) 1.0 RR, RIPPLE REJECTION (dB) TA = 25°C L = 25 mm Copper 0.8 0.6 0.4 0.2 80 Iout = 10 mA 70 60 50 40 Vin = 2.5 V Vout = 0.9 V Cin = 100 nF Cout = 1.0 mF TJ = 25°C 30 20 10 0.0 0 2 4 6 8 10 12 14 16 0 0 20 1.0 INPUT−OUTPUT VOLTAGE DIFFERENTIAL (V) 100 100 90 90 80 70 60 50 40 30 20 10 Vin = 3.3 V Vout = 0.9 V Iout = 10 mA Cin = 150 mF Cout = 150 nF TJ = 25°C 1000 80 70 60 50 Vin = 3.3 V Vout = 0.9 V Iout = 3.0 A Cin = 150 mF Cout = 1.0 mF TJ = 25°C 40 30 20 10 0 0 Start 1.0 kHz 10 100 F, FREQUENCY (kHz) Figure 8. Ripple Rejection vs. Frequency NOISE DENSITY (nVrms/ǨHz) NOISE DENSITY (nVrms/ǨHz) Figure 7. Output Current vs. Input−Output Voltage Differential Iout = 1.0 A Stop 200 kHz Start 1.0 kHz Stop 500 kHz F, FREQUENCY (kHz) F, FREQUENCY (kHz) Figure 9. Noise Density vs. Frequency Figure 10. Noise Density vs. Frequency http://onsemi.com 7 Iout 1.0 A/Div Vin = 3.3 V Vout = 0.9 V Cin = 150 mF Cout = 150 mF TA = 25°C Iout 1.0 A/Div Vout 20 mV/Div Vout 20 mV/Div NCP5663 Vin = 3.3 V Vout = 0.9 V Cin = 150 mF Cout = 150 mF TA = 25°C Iout = 3.0 A to 10 mA Iout = 10 mA to 3.0 A TIME (1.0 ms/Div) Figure 11. Load Transient Response Figure 12. Load Transient Response Vin = 3.3 V Vout = 0.9 V Cin = 150 mF Cout = 150 mF TA = 25°C Iout 1.0 A/Div Iout = 10 mA to 3.0 A Vin = 3.3 V Vout = 0.9 V Cin = 150 mF Cout = 150 mF TA = 25°C Iout = 3.0 A to 10 mA TIME (100 ns/Div) TIME (100 ns/Div) Figure 13. Load Transient Response Figure 14. Load Transient Response Vout 20 mV/Div Vin = 3.3 V Vout = 0.9 V Cin = 150 mF Cout = 10 mF TA = 25°C Iout 1.0 A/Div Vin = 3.3 V Vout = 0.9 V Cin = 150 mF Cout = 10 mF TA = 25°C Iout 1.0 A/Div Vout 20 mV/Div Iout 1.0 A/Div Vout 20 mV/Div Vout 20 mV/Div TIME (1.0 ms/Div) Iout = 3.0 A to 10 mA Iout = 10 mA to 3.0 A TIME (5.0 ms/Div) TIME (500 ns/Div) Figure 15. Load Transient Response Figure 16. Load Transient Response http://onsemi.com 8 NCP5663 APPLICATION INFORMATION The NCP5663 is a high performance low dropout 3.0 A linear regulator suitable for high power applications, featuring an ultra−fast response time and low noise without a bypass capacitor. It is offered in both fixed and adjustable output versions with voltages as low as 0.9 V. Additional features, such as Enable and Error Flag (fixed output version) increase the utility of the NCP5663. It is thermally robust and includes the safety features necessary during a fault condition, which provide for an attractive high current LDO solution for server, ASIC power supplies, networking equipment applications, and many others. close to the output pin and keep the leads short. This should help ensure ultra−fast transient response times. Adjustable Output Operation The application circuit for the adjustable output version is shown in Figure 1. The reference voltage is 0.9 V and the adjustable pin current is typically 40 nA. A resistor divider network, R1 and R2, is calculated using the following formula: R1 + R2 ǒVVout * 1Ǔ ref Current Limit Operation As the peak output current increases beyond its limitation, the device is internally clampled to 4.5 A, thus causing the output voltage to decrease and go out of regulation. This allows the device never to exceed the maximum power dissipation. Input Capacitor The recommended input capacitor value is a 150 mF OSCON with an Equivalent Series Resistance (ESR) of 50 mW. It is especially required if the power source is located more than a few inches from the NCP5663. This capacitor will reduce device sensitivity and enhance the output transient response time. The PCB layout is very important and in order to obtain the optimal solution, the Vin and GND traces should be sufficiently wide to minimize noise and unstable operation. Error Flag Operation The Error Flag pin on the NCP5663 will produce a logic Low when it drops below the nominal output voltage. Refer to the electrical characteristics for the threshold values at which point the Error Flag goes Low. When the NCP5663 is above the nominal output voltage, the Error Flag will remain at logic High. The external pullup resistor needs to be connected between Vin (Pin 1) and the Error Flag pin (Pin 5). A resistor of approximately 100 kW is recommended to minimize the current consumption. No pullup resistor is required if the Error Flag output is not being used. Output Capacitor Proper output capacitor selection is required to maintain stability. The NCP5663 is stable for Cout as low as 10 mF (Figures 15 and 16) and guaranteed to be stable at an output capacitance of, Cout > 33 mF with an ESR < 300 mW over the output current range of 10 mA to 3.0 A. For PCB layout considerations, place the recommended ceramic capacitor http://onsemi.com 9 NCP5663 Figure 17. Test Board used for Evaluation http://onsemi.com 10 NCP5663 ORDERING INFORMATION Device NCP5663DSADJR4G NCP5663DS15R4G (Note 3) Nominal Output Voltage Package Adj (Pb−Free) Shipping† 800 Tape & Reel D2PAK Fixed, 1.5 V (Pb−Free) 800 Tape & Reel 3. Fixed output voltages available at 0.9 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.0 V, 3.3 V per request. †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. http://onsemi.com 11 NCP5663 PACKAGE DIMENSIONS D2PAK 5−LEAD CASE 936AA−01 ISSUE B U U1 A E V1 K S V B 1 2 3 4 5 NOTES: 1. DIMENSIONS AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. PACKAGE OUTLINE EXCLUSIVE OF MOLD FLASH AND METAL BURR. 4. PACKAGE OUTLINE EXCLUSIVE OF PLATING THICKNESS. 5. FOOT LENGTH MEASURED AT INTERCEPT POINT BETWEEN DATUM A AND LEAD SURFACE. M H DIM A B C D E G H K L M N P R S U U1 V V1 W L W P N G D 5 PL R −A− C SOLDERING FOOTPRINT* INCHES MIN MAX 0.396 0.406 0.330 0.340 0.170 0.180 0.026 0.035 0.045 0.055 0.067 BSC 0.539 0.579 0.055 0.066 0.000 0.010 0.098 0.108 0.017 0.023 0.058 0.078 0_ 8_ 0.095 0.105 0.296 0.304 0.265 0.272 0.296 0.300 0.040 0.044 0.010 MILLIMETERS MIN MAX 10.05 10.31 8.38 8.64 4.31 4.57 0.66 0.91 1.14 1.40 1.70 BSC 13.69 14.71 1.40 1.68 0.00 0.25 2.49 2.74 0.43 0.58 1.47 1.98 0_ 8_ 2.41 2.67 7.52 7.72 6.72 6.92 7.53 7.63 1.01 1.11 0.25 8.38 0.33 1.702 0.067 10.66 0.42 3.05 0.12 16.02 0.63 SCALE 3:1 1.016 0.04 mm Ǔ ǒinches *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. The product described herein (NCP5663), may be covered by one or more of the following U.S. patents: 5,920,184; 5,834,926. There may be other patents pending. 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This literature is subject to all applicable copyright laws and is not for resale in any manner. PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: N. American Technical Support: 800−282−9855 Toll Free Literature Distribution Center for ON Semiconductor USA/Canada P.O. Box 61312, Phoenix, Arizona 85082−1312 USA Phone: 480−829−7710 or 800−344−3860 Toll Free USA/Canada Japan: ON Semiconductor, Japan Customer Focus Center 2−9−1 Kamimeguro, Meguro−ku, Tokyo, Japan 153−0051 Fax: 480−829−7709 or 800−344−3867 Toll Free USA/Canada Phone: 81−3−5773−3850 Email: [email protected] http://onsemi.com 12 ON Semiconductor Website: http://onsemi.com Order Literature: http://www.onsemi.com/litorder For additional information, please contact your local Sales Representative. NCP5663/D