NCP3334AMTADJTBG

NCP3334A Ultra High Accuracy, Low Iq, 500 mA Low Dropout Regulator The NCP3334A is a high performance, low dropout regulator with accuracy of ±0.9% over line and load. This device features ultra−low quiescent current and noise which encompasses all necessary characteristics demanded by today’s consumer electronics. This unique device is guaranteed to be stable without a minimum load current requirement and stable with any type of capacitor as small as 1.0 mF. The NCP3334A offers reverse bias protection. The device is available in a small 3x3 mm WDFN8 package. www.onsemi.com 1 WDFN8 MT SUFFIX CASE 511CF Features • • • • • • • • • • • • High Accuracy Over Line and Load (±0.9% at 25°C) Ultra−Low Dropout Voltage at Full Load No Minimum Output Current Required for Stability Low Noise Low Shutdown Current Reverse Bias Protected 2.6 V to 12 V Supply Range Thermal Shutdown Protection Current Limitation Requires Only 1.0 mF Output Capacitance for Stability Stable with Any Type of Capacitor (including MLCC) These are Pb−Free Devices MARKING DIAGRAM 1 3334A A L Y W G 3334A ADJ ALYWG G = Specific Device Code = Assembly Location = Wafer Lot = Year = Work Week = Pb−Free Package (Note: Microdot may be in either location) Applications • • • • • • • • Telecom Applications Cellular Base Stations Camcoders and Cameras Networking Systems, DSL/Cable Modems Cable Set−Top Box MP3/CD Players DSP Supply Displays and Monitors PIN CONNECTIONS 1 OUT OUT FB NC EPAD IN IN SD GND (Top View) ORDERING INFORMATION See detailed ordering, marking and shipping information in the package dimensions section on page 7 of this data sheet. © Semiconductor Components Industries, LLC, 2015 September, 2015 − Rev. 1 1 Publication Order Number: NCP3334A/D NCP3334A Figure 1. Typical Adjustable Version Application Schematic www.onsemi.com 2 NCP3334A PIN FUNCTION DESCRIPTION Pin No. Pin Name 1, 2 Vout Regulated output voltage. Bypass to ground with Cout w 1.0 mF. Description 3 FB Adjustable pin; reference voltage = 1.178 V. 4 NC Not Connected 5 GND 6 SD Shutdown pin. Pulling this pin Low turns on the regulator 7, 8 Vin Power Supply Input Voltage − EPAD Power Supply Ground Exposed thermal pad should be connected to ground or Vin. The EPAD is electrically isolated from the die. MAXIMUM RATINGS Rating Symbol Value Unit Input Voltage Vin −0.3 to +16 V Output Voltage Vout −0.3 to Vin +0.3 or 10 V* V Shutdown Pin Voltage Vsh −0.3 to +16 V Junction Temperature Range TJ −40 to +150 °C Storage Temperature Range Tstg −65 to +150 °C Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, 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 *Which ever is less. Reverse bias protection feature valid only if Vout − Vin ≤ 7 V. THERMAL CHARACTERISTICS Test Conditions (Typical Value) Characteristic Min Pad Board 1, Pad Board (Note 1) Unit 220 48 °C/W WDFN 8 Junction−to−Air, qJA 1. As mounted on 4−Layer FR4 Substrate of a specified copper area of 2 oz copper traces in accordance with JEDEC 51.7. www.onsemi.com 3 NCP3334A ELECTRICAL CHARACTERISTICS – Adjustable (Vout = 1.178 V typical, Vin = 6.0 V, TA = −40°C to +85°C, Cin = Cout = 1 mF, unless otherwise noted, Note 2, 3, 4) Symbol Min Typ Max Unit Reference Voltage Accuracy Vin = Voutnom + 0.4 V to 11 V, Iload = 0.1 mA to 500 mA, TJ = 25°C Vref −0.9% 1.167 1.178 +0.9% 1.189 V Reference Voltage Accuracy Vin = Voutnom + 0.4 V to 11 V, Iload = 0.1 mA to 500 mA, TJ = 85°C Vref −1.4% 1.162 1.178 +1.4% 1.194 V Reference Voltage Accuracy (Note 5) Vin = Voutnom + 0.4 V to 11 V, Iload = 0.1 mA to 500 mA, TJ = 150°C Vref −1.5% 1.160 1.178 +1.5% 1.196 V Characteristic Line Regulation Vin = (Voutnom + 0.4 V) to 11 V, Iload = 0.1 mA, TJ = 25°C LineReg 0.04 mV/V Load Regulation Iload = 0.1 mA to 500 mA, TJ = 25°C LoadReg 0.04 mV/mA Dropout Voltage, Vout = 98% of Voutnom Iload = 500 mA Iload = 300 mA Iload = 100 mA Iload = 1 mA VDO Peak Output Current (Vin = Voutnom + 1.0 V) Ipk Thermal Shutdown TJ Ground Current In Regulation Iload = 500 mA (Note 3) Iload = 300 mA (Note 3) Iload = 50 mA Iload = 0.1 mA mV 500 − − − 10 340 230 140 − 700 860 mA °C 160 IGND In Dropout Vin = Vout −0.1 V, Iload = 0.1 mA In Shutdown VSD = 6.0 V, Vin = 11 V IGNDsh Output Noise Iload = 500 mA, f = 10 Hz to 100 kHz, Cout = 10 mF, Cnr = 10 nF Iload = 500 mA, f = 10 Hz to 100 kHz, Cout = 10 mF, Cnr = 0 nF Vnoise Shutdown Threshold Voltage OFF Threshold Voltage ON VTHSD 6.0 3.5 0.7 130 10 6 1.5 180 mA − 450 mA 8 20 mA mA mVrms 26 38 2.0 0.4 V V ISD 1.2 3.0 mA Output Current In Shutdown Mode, VSD = 2.0 V, Vin = 11 V IOSD 0.07 1.0 mA Reverse Bias Protection, Current Flowing from the Output Pin to GND (Vin = 0 V, Vout_forced = Vout(nom) ≤ 7 V) (Note 6) IOUTR 1.0 SD Input Current, VSD = 0 V to 0.4 V or VSD = 2.0 V to Vin mA Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions. 2. All limits at temperature extremes are guaranteed via correlation using standard statistical quality control (SQC) methods. 3. Ambient temperature of 85°C corresponds to a junction temperature of 125°C under pulsed full load test conditions. 4. Application stable with no load. 5. VIN = 2.6 V to11 V for VOUT(NOM) ≤ 2.2 V and TJ > 0°C, otherwise VIN = 2.9 V to 11 V. 6. Reverse bias protection feature valid only if Vout − Vin ≤ 7 V. www.onsemi.com 4 NCP3334A TYPICAL CHARACTERISTICS 1.184 8 Voutnom = 1.178 V IOUT = 0.1 mA 1.182 1.181 1.180 VIN = 12 V VIN = 6 V VIN = 2.9 V 1.179 1.178 −40 −20 TA = 25°C 5 4 3 TA = 125°C 2 0 0 20 40 60 80 100 120 0 0.1 0.2 0.3 0.4 0.5 TEMPERATURE (°C) OUTPUT CURRENT (A) Figure 2. Output Voltage vs. Temperature Figure 3. Ground Current vs. Output Current 160 QUIESCENT CURRENT (mA) Voutnom = 2.5 V TA = 25°C 225 200 DROPOUT (mV) 6 1 250 175 150 125 100 75 140 120 100 80 Voutnom = 1.178 V IOUT = 0 TA = 25°C 60 40 50 50 100 150 200 250 300 350 400 450 2 500 3 4 5 6 7 8 9 10 11 12 OUTPUT CURRENT (mA) INPUT VOLTAGE (V) Figure 4. Dropout Voltage vs. Output Current Figure 5. Quiescent Current vs. Input Voltage 900 1.4 SHORT/PEAK CURRENT (mA) Voutnom = 1.178 V IOUT = 0.1 mA TA = 25°C 1.2 OUTPUT VOLTAGE (V) TA = −40°C VIN = 2.9 V Voutnom = 1.178 V 7 GROUND CURRENT (mA) OUTPUT VOLTAGE (V) 1.183 1.0 0.8 0.6 VIN = 12 V VIN = 10 V VIN = 5 V VIN = 2.9 V 0.4 0.2 0 Short Current 800 700 Peak Current 600 500 400 300 Voutnom = 1.178 V VIN = 2.9 V TA = 25°C 200 100 0 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0 20 40 60 80 100 ENABLE VOLTAGE (V) TEMPERATURE (°C) Figure 6. Enable OFF Threshold Figure 7. Peak and Short Current vs. Temperature www.onsemi.com 5 120 NCP3334A TYPICAL CHARACTERISTICS 600 120 50 mA 80 0.1 A 60 400 0.5 A 0 300 200 40 20 VOUT = 1.178 V IOUT = 500 mA 500 IOUT = 1 mA (nV/√Hz) PSRR (dB) 100 Voutnom = 1.178 V COUT = 10 mF VIN = 2.9 V + 200 mVpp modulation TA = 25°C 10 100 1K 10K 100 0 100K 1M 10 100 1K 10K 100K FREQUENCY (Hz) FREQUENCY (Hz) Figure 8. PSRR vs. Frequency Figure 9. Output Noise Density www.onsemi.com 6 1M NCP3334A APPLICATIONS INFORMATION Reverse Bias Protection Adjustable Operation Reverse bias is a condition caused when the input voltage goes to zero, but the output voltage is kept high either by a large output capacitor or another source in the application which feeds the output pin. Normally in a bipolar LDO all the current will flow from the output pin to input pin through the PN junction with limited current capability and with the potential to destroy the IC. Due to an improved architecture, the NCP3334A can withstand up to 7.0 V on the output pin with virtually no current flowing from output pin to input pin, and only negligible amount of current (tens of mA) flowing from the output pin to ground for infinite duration. The output voltage can be set by using a resistor divider with a range of 1.178 to 10 V. The appropriate resistor divider can be found by solving the equation below. The recommended current through the resistor divider is from 10 mA to 100 mA. This can be accomplished by selecting resistors in the kW range. As result, the Iadj*R2 becomes negligible in the equation and can be ignored. ǒ Ǔ Vout + 1.178 * 1 ) R1 ) Iadj * R2 R2 (eq. 1) Dropout Voltage The voltage dropout is measured at 97% of the nominal output voltage. Thermal Considerations Input Capacitor Internal thermal limiting circuitry is provided to protect the integrated circuit in the event that the maximum junction temperature is exceeded. This feature provides protection from a catastrophic device failure due to accidental overheating. This protection feature is not intended to be used as a substitute to heat sinking. The maximum power that can be dissipated, can be calculated with the equation below: An input capacitor of at least 1.0 mF, any type, is recommended to improve the transient response of the regulator and/or if the regulator is located more than a few inches from the power source. It will also reduce the circuit’s sensitivity to the input line impedance at high frequencies. The capacitor should be mounted with the shortest possible track length directly across the regular’s input terminals. PD + Output Capacitor The NCP3334A remains stable with any type of capacitor as long as it fulfills its 1.0 mF requirement. There are no constraints on the minimum ESR and it will remain stable up to an ESR of 5.0 W. Larger capacitor values will improve the noise rejection and load transient response. TJ(max) * TA RqJA (eq. 2) For improved thermal performance, contact the factory for the WDFN package option. The WDFN package includes an exposed metal pad that is specifically designed to reduce the junction to air thermal resistance, RqJA. ORDERING INFORMATION Device NCP3334AMTADJTBG Nominal Output Voltage Marking Package Shipping† Adj. 3334A ADJ WDFN8 (Pb−Free) 3000 / Tape & Reel †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. *Please contact factory for other voltage options. www.onsemi.com 7 NCP3334A PACKAGE DIMENSIONS WDFN8 3x3, 0.5P CASE 511CF ISSUE O A D PIN ONE REFERENCE 0.10 C 2X L1 ÇÇÇ ÇÇÇ ÇÇÇ ÇÇÇ 0.10 C 2X DETAIL A ÇÇÇ ÉÉÉ EXPOSED Cu A DETAIL B C D2 DETAIL A 1 8X A3 A1 ALTERNATE CONSTRUCTIONS A1 SIDE VIEW ÉÉ ÇÇ ÇÇ MOLD CMPD DETAIL B A3 0.08 C NOTE 4 ALTERNATE CONSTRUCTIONS E TOP VIEW 0.05 C NOTES: 1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994. 2. CONTROLLING DIMENSION: MILLIMETERS. 3. DIMENSION b APPLIES TO PLATED TERMINAL AND IS MEASURED BETWEEN 0.05 AND 0.15 MM FROM TERMINAL TIP. 4. COPLANARITY APPLIES TO THE EXPOSED PAD AS WELL AS THE TERMINALS. 5. POSITIONAL TOLERANCE APPLIES TO ALL OF THE EXPOSED PADS. L L B DIM A A1 A3 b D D2 E E2 e L L1 MILLIMETERS MIN MAX 0.70 0.80 0.00 0.05 0.20 REF 0.20 0.30 3.00 BSC 1.65 1.85 3.00 BSC 1.35 1.55 0.50 BSC 0.30 0.50 0.00 0.15 SEATING PLANE RECOMMENDED SOLDERING FOOTPRINT* L 4 8X 1.94 PACKAGE OUTLINE 0.63 E2 3.30 1.65 8 5 e 8X e/2 BOTTOM VIEW b 0.10 M C A B 0.05 M C 1 8X NOTE 3 0.32 0.50 PITCH DIMENSIONS: MILLIMETERS *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. Micro8 is a trademark of International Rectifier. ON Semiconductor and the are registered trademarks of Semiconductor Components Industries, LLC (SCILLC) or its subsidiaries in the United States and/or other countries. SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. SCILLC reserves the right to make changes without further notice to any products herein. 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