NCP5667 3.0 A, Low Dropout Linear Regulator with Enhanced ESD Protection The NCP5667 is a high performance, low dropout linear regulator designed for high power applications that require up to 3.0 A current. A thermally robust, 3 pin D2PAK, combined with an architecture that offers low ground current (independent of load), provides for a superior high-current LDO solution. http://onsemi.com MARKING DIAGRAM Features •±1% Output Voltage Accuracy •Ultra-Fast Transient Response (Settling Time: 1-3 ms) •Enhanced ESD Ratings: 4 kV (HBM), 400 V (MM) •Low Ground Current Independent of Load (3.0 mA Maximum) •Current Limit Protection •Thermal Protection •Power Supply Rejection Ratio > 65 dB •Stable with Aluminum, Tantalum and Ceramic Capacitors •Functional Substitute for LM323 •This is a Pb-Free Device Applications •Servers •DTV and Flat Panel Applications •Post Regulation for Power Supplies •Laptop Computing Applications •USB Powered Applications •Networking Equipment •Gaming and STB Modules 1 3 D2PAK3 CASE 936 NC 5667DSxx AWLYWWG xx = Voltage Option = 50 = 5.0 V A = Assembly Location WL = Wafer Lot Y = Year WW = Work Week G = Pb-Free Tab = GND Pin 1. Vin 2. GND 3. Vout ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 8 of this data sheet. Vin Vout Vin Cin* Vout NCP5667 Cout** GND * Cin - 4.7 mF to 220 mF recommended **Cout - 2.2 mF to 220 mF recommended See more details in the Application Information section Figure 1. Typical Application Circuit © Semiconductor Components Industries, LLC, 2007 October, 2007 - Rev. 0 1 Publication Order Number: NCP5667/D NCP5667 PIN FUNCTION DESCRIPTION Pin No. Pin Name Description 1 Vin 2, Tab GND Power Supply Ground 3 Vout Regulated Output Voltage Positive Power Supply Input Voltage Vin Voltage Reference Block Vref = 0.9 V R3 Vout Output Stage Cc R1 R4 R2 GND Figure 2. Block Diagram http://onsemi.com 2 NCP5667 ABSOLUTE MAXIMUM RATINGS Symbol Value Unit Input Voltage (Note 1) Rating Vin 18 Vdc Output Pin Voltage Vout -0.3 to (Vin + 0.3) V TJ(max) 150 °C Storage Temperature Range Tstg -55 to +150 °C Moisture Sensitivity Level MSL 1 - ESD Capability, Human Body Model (Note 2) ESDHBM 4000 V ESD Capability, Machine Model (Note 2) ESDMM 400 V Maximum Junction Temperature 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. THERMAL CHARACTERISTICS Rating Symbol Value Unit RθJA RθJC 45 5.0 Symbol Value Unit Operating Input Voltage (Note 1) Vin (Vout + VDO) to 9 V Operating Ambient Temperature Range TA -40 to +85 °C °C/W Thermal Characteristics (Note 1) Thermal Resistance Junction-to-Ambient (Note 3) Thermal Resistance Junction-to-Case OPERATING RANGES Rating 1. Refer to Electrical Characteristics and Application Information for Safe Operating Area. 2. 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. 3. As measured using a copper heat spreading area of 650 mm2, 1 oz copper thickness. http://onsemi.com 3 NCP5667 ELECTRICAL CHARACTERISTICS (Vin = Vout(nom) + 1.5 V, for typical values TA = 25°C, for min/max values TA = -40°C to 85°C, Cin = 100 mF, Cout = 33 mF, unless otherwise noted. (Note 4)) Characteristic Symbol Output Voltage (Note 6) 5.0 V Regulator TA = 25°C (Vin = 6.5 V to 7.0 V, Iout = 10 mA to 3.0 A) TA = -20 to +125°C (Vin = 6.5 V to 7.0 V, Iout = 10 mA to 3.0 A) TA = -40 to +150°C (Vin = 6.5 V to 7.0 V, Iout = 10 mA to 3.0 A) Min Typ Max Vout Unit V 4.950 (-1%) 4.925 (-1.5%) 4.900 (-2%) 5.000 5.000 5.000 5.050 (+1%) 5.075 (+1.5%) 5.100 (+2%) Line Regulation (Iout = 10 mA, Vout+1.5 V < Vin < 7.0 V) (Note 5) REGline - 0.03 - % Load Regulation (10 mA < Iout < 3.0 A) (Note 5) 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 (Note 5) Ilim - 4.5 - A Ripple Rejection (120 Hz) (Note 5) Ripple Rejection (1 kHz) (Note 5) RR - 70 65 - dB Output Noise Voltage (Iout = 10 mA, Cout = 1.0 mF, f = 10 Hz to 100 kHz) (Note 5) Vn - 105 - mVrms Thermal Shutdown (Note 5) TSHD - 160 - °C Ground Current (Iout = 3.0 A) IGND - 2.4 3.0 mA 4. Performance guaranteed over specified operating conditions by design, guard banded test limits, and/or characterization, production tested at TJ = TA = 25°C. Low duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible. 5. Typical values are based on design and/or characterization. 6. Other 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. http://onsemi.com 4 NCP5667 TYPICAL CHARACTERISTICS 1.4 VDO, DROPOUT VOLTAGE (V) VDO, DROPOUT VOLTAGE (V) 1.4 1.2 Iout = 3.0 A 1.0 Iout = 1.5 A 0.8 0.6 Iout = 0.5 A 0.4 0.2 0.0 -50 -25 0 25 50 75 100 125 1.2 0°C 1.0 -40°C 0.8 25°C 0.6 150°C 0.4 0.2 0.0 150 0 0.5 1.0 5.10 2.5 5.08 2.4 5.06 5.04 Iout = 3.0 A 5.00 Iout = 10 mA 4.98 4.96 4.94 4.92 Vout(nom) = 5.0 V 4.90 -50 -25 0 25 50 75 100 3.0 125 Iout = 3.0 A 2.2 2.1 2.0 1.9 1.8 1.7 1.6 Vout(nom) = 5.0 V 1.5 -50 150 -25 0 25 50 75 100 125 150 TA, AMBIENT TEMPERATURE (°C) Figure 3. Output Voltage vs. Ambient Temperature Figure 4. Ground Current vs. Ambient Temperature 5.00 1.2 4.75 TA = 25°C L = 25 mm Copper 1.0 OUTPUT CURRENT (A) ISC, SHORT CIRCUIT LIMIT (A) 2.5 2.3 TA, AMBIENT TEMPERATURE (°C) 4.50 4.25 4.00 3.75 3.50 0.8 0.6 0.4 0.2 3.25 3.00 -50 2.0 Figure 2. Dropout Voltage vs. Output Current IGND, GROUND CURRENT (mA) Vout, OUTPUT VOLTAGE (V) Figure 1. Dropout Voltage vs. Ambient Temperature 5.02 1.5 Iout, OUTPUT CURRENT (A) TA, AMBIENT TEMPERATURE (°C) -25 0.0 0 25 50 75 100 125 150 0 2 4 6 8 10 12 14 16 TA, AMBIENT TEMPERATURE (°C) INPUT-OUTPUT VOLTAGE DIFFERENTIAL (V) Figure 5. Short Circuit Current Limit vs. Ambient Temperature Figure 6. Output Current vs. Input-Output Voltage Differential http://onsemi.com 5 20 NCP5667 TYPICAL CHARACTERISTICS 10 80 Unstable Region Iout = 10 mA 70 1.0 Cout = 220 mF Cout = 22 mF 60 ESR (W) RR, RIPPLE REJECTION (dB) 90 50 40 30 Cin = 100 nF Cout = 1.0 mF Iout = 1.0 A Cout = 2.2 mF 0.1 Stable Region 0.01 20 10 0 0 1.0 10 100 0.001 0.0 1000 F, FREQUENCY (kHz) Figure 7. Ripple Rejection vs. Frequency 0.5 1.0 1.5 2.0 Iout, OUTPUT CURRENT (A) 2.5 Figure 8. Output Capacitor ESR Stability vs. Output Current http://onsemi.com 6 3.0 NCP5667 Vout 50 mV/Div Vout 50 mV/Div TYPICAL CHARACTERISTICS Iout 1.0 A/Div Iout 1.0 A/Div Cout = 150 mF Cout = 150 mF Iout = 3.0 A to 10 mA Iout = 10 mA to 3.0 A TIME (1.0 ms/Div) TIME (1.0 ms/Div) Figure 9. Load Transient Response Figure 10. Load Transient Response Vout 50 mV/Div Iout 1.0 A/Div Iout = 10 mA to 3.0 A Cout = 150 mF Iout = 3.0 A to 10 mA TIME (100 ns/Div) TIME (100 ns/Div) Figure 11. Load Transient Response Figure 12. Load Transient Response Vout 20 mV/Div Vout 20 mV/Div Iout 1.0 A/Div Vout 50 mV/Div Cout = 150 mF Cout = 10 mF Cout = 10 mF NOTE: Iout 1.0 A/Div Iout 1.0 A/Div Iout = 10 mA to 3.0 A Iout = 3.0 A to 10 mA TIME (400 ns/Div) TIME (10 ms/Div) Figure 13. Load Transient Response Figure 14. Load Transient Response Typical characteristics were measured with the same conditions as electrical characteristics, unless otherwise noted. http://onsemi.com 7 NCP5667 APPLICATION INFORMATION The NCP5667 is a high performance low dropout 3.0 A linear regulator suitable for high power applications. 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. Current Limit Operation Input Capacitor Input Voltage Operating Range An input bypass capacitor is recommended to improve transient response or if the regulator is located more than a few inches from the power source. This will reduce the circuit's sensitivity to the input line impedance at high frequencies and significantly enhance the output transient response. Different types and different sizes of input capacitors can be chosen dependent on the quality of power supply. The range of 4.7 mF to 220 mF should cover most of the applications. The higher the capacitance, the lower change of input voltage due to line and load transients. The bypass capacitor should be mounted with shortest possible lead or track length directly across the regulator's input terminals. The NCP5667 is guaranteed to protect itself from self destruction due to excessive power dissipation by activating current limit and thermal shutdown protections. These destructive situations can happen during very fast startup with large output capacitors or when output is short circuited. As long as the input voltage is lower than maximum operating voltage (9 V), the maximum power dissipation is never exceeded. If input voltage is between maximum operating voltage (9 V) and absolute maximum voltage (18 V) power dissipation must never exceed limits specified in Thermal Consideration section for safety operation. To use the device over maximum operating voltage the slow startup, not large output capacitors and no short circuit is recommended to maintain. 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. Output Capacitor The output capacitor is required for stability. The NCP5667 remains stable with ceramic, tantalum, and aluminum electrolytic capacitors with a minimum value of 2.2 mF. See Figure 8 for stable region of ESR for various output capacitors. The range of 2.2 mF to 220 mF should cover most of the applications. The higher the capacitance, the better load transient response. When a high value capacitor is used, a low value capacitor is also recommended to be put in parallel. The output capacitors should be placed as close as possible to the output pin of the device. This should help ensure ultrafast transient response times. Thermal Consideration The maximum device power dissipation can be calculated by: T P D + J(max) R *T A qJA The bipolar process employed for this IC is fully characterized and rated for reliable 18 V operation. To avoid damaging the part or degrading it's reliability, power dissipation transients should be limited to 30 W for D2PAK. For open-circuit to short-circuit transient, PDTransient = Vin(operating max) * ISC ORDERING INFORMATION Device NCP5667DS50R4G (Note 7) Nominal Output Voltage Package Shipping† 5.0 V D2PAK 800 / Tape & Reel (Pb-Free) 7. Other 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 8 NCP5667 PACKAGE DIMENSIONS D2PAK CASE 936-03 ISSUE B -TK OPTIONAL CHAMFER A TERMINAL 4 E U S B F V H 1 2 3 M J D 0.010 (0.254) M T 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. N G L P R C 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 The products described herein (NCP5667), 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. 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. 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