NCP706 1A, 1% Precision Very Low Dropout Voltage Regulator with Enable The NCP706 is a Very Low Dropout Regulator which provides up to 1 A of load current and maintains excellent output voltage accuracy of 1% including line, load and temperature variations. The operating input voltage range from 2.4 V up to 5.5 V makes this device suitable for Li−ion battery powered products as well as post−regulation applications. The product is available in 2.1 V and 2.2 V fixed output voltage options. NCP706 is fully protected against overheating and output short circuit. Very small 8−pin XDFN8 1.6 x 1.2, 04P package makes the device especially suitable for space constrained portable applications such as tablets and smartphones. Features • Operating Input Voltage Range: 2.4 V to 5.5 V • Fixed Output Voltage Option: 2.1 V, 2.2 V • • • • • • • • • MARKING DIAGRAM XXMG G XDFN8 CASE 711AS XX = Specific Device Code M = Date Code G = Pb−Free Package (*Note: Microdot may be in either location) Other Output Voltage Options available on request. Low Quiescent Current of typ. 200 mA Very Low Dropout: 300 mV Max. at IOUT = 1 A ±1% Accuracy Over Load/Line/Temperature High PSRR: 60 dB at 1 kHz Internal Soft−Start to Limit the Inrush Current Thermal Shutdown and Current Limit Protections Stable with a 4.7 mF Ceramic Output Capacitor Available in XDFN8 1.6 x 1.2, 04P 8−pin package These are Pb−Free Devices PIN CONNECTION OUT 1 8 IN OUT 2 7 IN N/C 3 6 EN SNS 4 5 GND (Top View) Typical Applications • • • • http://onsemi.com Tablets, Smartphones, Wireless Handsets, Portable Media Players Portable Medical Equipment Other Battery Powered Applications IN 8 1 OUT IN 7 2 OUT EN 6 3 N/C GND 5 4 SNS (Bottom View) VIN = 2.4 (2.5) − 5.5 V VOUT = 2.1 (2.2) V @ 1 A IN CIN EN ON OFF OUT NCP706 SNS GND ORDERING INFORMATION See detailed ordering and shipping information on page 11 of this data sheet. COUT 4.7 mF Ceramic Figure 1. Typical Application Schematic © Semiconductor Components Industries, LLC, 2013 July, 2013 − Rev. 2 1 Publication Order Number: NCP706/D NCP706 Figure 2. Simplified Internal Schematic Block Diagram PIN FUNCTION DESCRIPTION Pin No. XDFN8 Pin Name 1 OUT 2 OUT 3 N/C Not connected. This pin can be tied to ground to improve thermal dissipation. 4 SNS Remote sense connection. This pin should be connected to the output voltage rail. 5 GND Power supply ground. 6 EN Enable pin. Driving EN over 0.9 V turns on the regulator. Driving EN below 0.4 V puts the regulator into shutdown mode. 7 IN Input pin. A small capacitor is needed from this pin to ground to assure stability. 8 IN − Exposed Pad Description Regulated output voltage. A minimum 4.7 mF ceramic capacitor is needed from this pin to ground to assure stability. This pad enhances thermal performance and is electrically connected to GND. It is recommended that the exposed pad is connected to the ground plane on the board or otherwise left open. http://onsemi.com 2 NCP706 ABSOLUTE MAXIMUM RATINGS Rating Symbol Value Unit VIN −0.3 V to 6 V V Output Voltage VOUT −0.3 V to VIN + 0.3 V V Enable Input VEN −0.3 V to VIN + 0.3 V V Output Short Circuit Duration tSC Indefinite s TJ(MAX) 125 °C Input Voltage (Note 1) Maximum Junction Temperature Storage Temperature TSTG −55 to 150 °C ESD Capability, Human Body Model (Note 2) ESDHBM 2000 V ESD Capability, Machine Model (Note 2) ESDMM 200 V 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. 1. Refer to ELECTRICAL CHARACTERISTIS and APPLICATION INFORMATION for Safe Operating Area. 2. This device series incorporates ESD protection and is tested by the following methods: ESD Human Body Model tested per EIA/JESD22−A114 ESD Machine Model tested per EIA/JESD22−A115 Latch−up Current Maximum Rating tested per JEDEC standard: JESD78 THERMAL CHARACTERISTICS Rating Thermal Characteristics, XDFN8 1.6x1.2, 04P Thermal Resistance, Junction−to−Air http://onsemi.com 3 Symbol Value Unit RqJA 160 °C/W NCP706 ELECTRICAL CHARACTERISTICS − VOLTAGE VERSION 2.1 V −40°C ≤ TJ ≤ 125°C; VIN = VOUT(NOM) + 0.3 V or 2.4 V, whichever is greater; IOUT = 10 mA, CIN = COUT = 4.7 mF, VEN = 0.9 V, unless otherwise noted. Typical values are at TJ = +25°C. (Note 3) Test Conditions Parameter Operating Input Voltage Symbol Min VIN 2.4 UVLO 1.2 2.079 Typ Max Unit 5.5 V 1.6 1.9 V 2.10 2.121 Undervoltage lock−out VIN rising Output Voltage Accuracy VOUT + 0.3 V ≤ VIN ≤ 4.5 V, IOUT = 0 – 1 A VOUT Line Regulation VOUT + 0.3 V ≤ VIN ≤ 4.5 V, IOUT = 10 mA RegLINE 2 mV Load Regulation IOUT = 0 mA to 1 A RegLOAD 2 mV Load Transient IOUT = 10 mA to 1A or 10 mA to 1 A in 10 ms, COUT = 10 mF TranLOAD ±120 mV Dropout voltage (Note 4) IOUT = 1 A, VOUT(nom) = 2.1 V VDO Output Current Limit VOUT = 90% VOUT(nom) ICL Quiescent current IOUT = 0 mA IQ 180 Ground current IOUT = 1 A IGND 200 Shutdown current VEN ≤ 0 V, VIN = 2.0 to 5.5 V Reverse Leakage Current in Shutdown VIN = 5.5 V, VOUT = VOUT(NOM), VEN < 0.4 V EN Pin High Threshold EN Pin Low Threshold VEN Voltage increasing VEN Voltage decreasing EN Pin Input Current VEN = 5.5 V IEN Turn−on Time COUT = 4.7 mF, from assertion EN pin to 98% Vout(nom) tON Power Supply Rejection Ratio VIN = 2.6 V, VOUT = 2.1 V IOUT = 0.5 A Output Noise Voltage VOUT = 2.1 V, VIN = 2.6 V, IOUT = 0.5 A f = 100 Hz to 100 kHz Thermal Shutdown Temperature Thermal Shutdown Hysteresis 1.1 IREV VEN_HI VEN_LO f = 100 Hz f = 1 kHz f = 10 kHz 300 V mV A 230 mA mA 0.1 1 mA 1.5 5 mA 0.4 V V 500 nA 0.9 100 ms 200 PSRR 60 60 40 dB VNOISE 280 mVrms Temperature increasing from TJ = +25°C TSD 160 °C Temperature falling from TSD TSDH − 20 − °C 3. Performance guaranteed over the indicated operating temperature range by design 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. 4. Characterized when VOUT falls 100 mV below the regulated voltage at VIN = VOUT(NOM) + 0.3 V. http://onsemi.com 4 NCP706 ELECTRICAL CHARACTERISTICS − VOLTAGE VERSION 2.2 V −40°C ≤ TJ ≤ 125°C; VIN = VOUT(NOM) + 0.3 V or 2.5 V, whichever is greater; IOUT = 10 mA, CIN = COUT = 4.7 mF, VEN = 0.9 V, unless otherwise noted. Typical values are at TJ = +25°C. (Note 5) Test Conditions Parameter Operating Input Voltage Symbol Min VIN 2.5 UVLO 1.2 2.178 Typ Max Unit 5.5 V 1.6 1.9 V 2.2 2.222 Undervoltage lock−out VIN rising Output Voltage Accuracy VOUT + 0.3 V ≤ VIN ≤ 4.5 V, IOUT = 0 – 1 A VOUT Line Regulation VOUT + 0.3 V ≤ VIN ≤ 4.5 V, IOUT = 10 mA RegLINE 2 mV Load Regulation IOUT = 0 mA to 1 A RegLOAD 2 mV Load Transient IOUT = 10 mA to 1A or 10 mA to 1 A in 10 ms, COUT = 10 mF TranLOAD ±120 mV Dropout voltage (Note 6) IOUT = 1 A, VOUT(nom) = 2.2 V VDO Output Current Limit VOUT = 90% VOUT(nom) ICL Quiescent current IOUT = 0 mA IQ 180 Ground current IOUT = 1 A IGND 200 Shutdown current VEN ≤ 0 V, VIN = 2.0 to 5.5 V EN Pin High Threshold EN Pin Low Threshold VEN Voltage increasing VEN Voltage decreasing EN Pin Input Current VEN = 5.5 V IEN 100 Turn−on Time COUT = 4.7 mF, from assertion EN pin to 98% Vout(nom) tON 200 ms Power Supply Rejection Ratio VIN = 3.2 V, VOUT = 2.2 V IOUT = 0.5 A f = 100 Hz f = 1 kHz f = 10 kHz PSRR 55 70 60 dB Output Noise Voltage VOUT = 2.2 V, VIN = 2.7 V, IOUT = 0.5 A f = 100 Hz to 100 kHz VNOISE 300 mVrms Thermal Shutdown Temperature Temperature increasing from TJ = +25°C TSD 160 °C Thermal Shutdown Hysteresis Temperature falling from TSD TSDH 300 1.1 0.9 − mV A 0.1 VEN_HI VEN_LO V 230 mA 1 0.4 20 mA 500 − mA V nA °C 5. Performance guaranteed over the indicated operating temperature range by design 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. 6. Characterized when VOUT falls 100 mV below the regulated voltage at VIN = VOUT(NOM) + 0.3 V. http://onsemi.com 5 NCP706 TYPICAL CHARACTERISTICS VIN = 2.4 V IOUT = 10 mA COUT = 4.7 mF VOUT(NOM) = 2.1 V 2.098 2.096 2.094 2.092 OUTPUT VOLTAGE (V) 2.090 −40 −20 0 20 40 60 80 100 2.196 2.192 2.188 2.184 −40 120 40 60 80 100 Figure 4. Output Voltage vs. Temperature 2.0 1.6 VIN = VEN TA = 25°C COUT = 4.7 mF VOUT(NOM) = 2.1 V 1.2 0.8 IOUT = 10 mA IOUT = 50 mA IOUT = 250 mA IOUT = 500 mA 0.4 1.0 2.0 3.0 4.0 120 1.6 VIN = VEN TA = 25°C COUT = 4.7 mF VOUT(NOM) = 2.2 V 1.2 0.8 IOUT = 10 mA IOUT = 50 mA IOUT = 250 mA IOUT = 500 mA 0.4 0.0 5.0 0.0 1.0 2.0 3.0 4.0 5.0 INPUT VOLTAGE (V) INPUT VOLTAGE (V) Figure 5. Output Voltage vs. Input Voltage Figure 6. Output Voltage vs. Input Voltage QUIESCENT CURRENT (mA) 240 IOUT = 0 COUT = 4.7 mF VOUT(NOM) = 2.1 V TA = 125°C 220 TA = 25°C 200 TA = −40°C 180 160 140 20 Figure 3. Output Voltage vs. Temperature 2.0 240 0 TEMPERATURE (°C) 2.4 0.0 −20 TEMPERATURE (°C) 260 QUIESCENT CURRENT (mA) 2.200 2.4 0.0 VIN = 2.5 V IOUT = 10 mA COUT = 4.7 mF VOUT(NOM) = 2.2 V 2.204 OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 2.100 2.208 OUTPUT VOLTAGE (V) 2.102 2.0 2.5 3.0 3.5 4.0 4.5 5.0 200 TA = 125°C 180 TA = 25°C 160 TA = −40°C 140 120 5.5 IOUT = 0 COUT = 4.7 mF VOUT(NOM) = 2.2 V 220 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 INPUT VOLTAGE (V) INPUT VOLTAGE (V) Figure 7. Quiescent Current vs. Input Voltage Figure 8. Quiescent Current vs. Input Voltage http://onsemi.com 6 NCP706 TYPICAL CHARACTERISTICS 260 VIN = 2.4 V VIN = 4.0 V VIN = 5.5 V 240 VIN = 3.0 V VIN = 5.0 V GROUND CURRENT (mA) GROUND CURRENT (mA) 260 220 200 180 COUT = 4.7 mF TA = 25°C VOUT(NOM) = 2.1 V 160 140 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 OUTPUT CURRENT (A) 0.8 0.9 200 180 COUT = 4.7 mF TA = 25°C VOUT(NOM) = 2.2 V 160 0.0 Figure 9. Ground Current vs. Output Current 1.8 1.6 1.4 SHORT CURRENT LIMIT (A) SHORT CURRENT LIMIT (A) 0.2 0.3 0.4 0.5 0.6 0.7 OUTPUT CURRENT (A) 0.8 0.9 1.0 1.8 VOUT = 0 VEN = VIN COUT = 4.7 mF TA = 25°C VOUT(NOM) = 2.1 V 1.2 1 0.8 0.6 2.0 2.5 3.0 3.5 4.0 4.5 5.0 1.4 1.2 1.0 0.8 0.6 2.0 3.5 4.0 4.5 5.0 Figure 11. Short Current Limitation vs. Input Voltage Figure 12. Short Current Limitation vs. Input Voltage DROPOUT VOLTAGE (V) 25°C 0.15 −40°C 0.10 0.05 0.2 0.4 0.6 0.8 VEN = VIN COUT = 4.7 mF VOUT(NOM) = 2.2 V 0.30 125°C 0.20 0 3.0 INPUT VOLTAGE (V) 0.35 0.25 2.5 INPUT VOLTAGE (V) VEN = VIN COUT = 4.7 mF VOUT(NOM) = 2.1 V 0.30 0.00 VOUT = 0 VEN = VIN COUT = 4.7 mF TA = 25°C VOUT(NOM) = 2.2 V 1.6 0.4 5.5 0.35 DROPOUT VOLTAGE (V) 0.1 Figure 10. Ground Current vs. Output Current 2 0.4 VIN = 3.0 V VIN = 5.0 V 220 140 1.0 VIN = 2.5 V VIN = 4.0 V VIN = 5.5 V 240 0.25 125°C 0.20 25°C 0.15 −40°C 0.10 0.05 0.00 1 5.5 0 0.2 0.4 0.6 0.8 OUTPUT CURRENT (A) OUTPUT CURRENT (A) Figure 13. Dropout Voltage vs. Output Current Figure 14. Dropout Voltage vs. Output Current http://onsemi.com 7 1 NCP706 3.0 2.5 VIN = 2.6 V + 200 VPP Modulation IOUT = 500 mA TA = 25°C VOUT(NOM) = 2.1 V 80 2.0 1.5 60 40 1.0 COUT = 22 mF COUT = 10 mF COUT = 4.7 mF 20 0.5 0.0 VOUT(NOM) = 2.1 V VOUT(NOM) = 2.2 V 0.0 1.0 2.0 3.0 4.0 0 0.1 5.0 FORCED OUTPUT VOLTAGE (V) 10 FREQUENCY (kHz) Figure 15. Reverse Leakage Current in Shutdown Figure 16. PSRR vs. Frequency & Output Capacitor 100 1 100 VIN = 2.7 V + 200 VPP Modulation IOUT = 500 mA TA = 25°C VOUT(NOM) = 2.2 V 80 80 70 60 40 100 1000 VIN = 3.7 V + 200 VPP Modulation COUT = 4.7 mF TA = 25°C VOUT(NOM) = 2.1 V 90 PSRR (dB) PSRR (dB) 100 VIN = 5.5 V VEN = 0 CIN = COUT = 4.7 mF TA = 25°C PSRR (dB) REVERSE LEAKAGE CURRENT IN SHUTDOWN (mA) 3.5 60 50 40 30 20 0 20 COUT = 22 mF COUT = 10 mF COUT = 4.7 mF 0.1 1 10 100 0 1000 0 10 Figure 18. PSRR vs. Frequency & Output Current 2.5 VIN = 3.2 V + 200 VPP Modulation COUT = 4.7 mF TA = 25°C VOUT(NOM) = 2.2 V IOUT = 10 mA IOUT = 100 mA IOUT = 500 mA 0.1 100 Figure 17. PSRR vs. Frequency & Output Capacitor OUTPUT NOISE DENSITY (mV/√Hz) PSRR (dB) 1.0 FREQUENCY (kHz) 60 20 0.1 FREQUENCY (kHz) 80 40 IOUT = 10 mA IOUT = 100 mA IOUT = 500 mA 10 1 10 FREQUENCY (kHz) 100 1000 Figure 19. PSRR vs. Frequency & Output Current 1000 IOUT = 500 mA VIN = 2.7 V TA = 25°C VOUT(NOM) = 2.1 V 2.0 1.5 1.0 0.5 0.0 0.01 COUT = 4.7 mF COUT = 10 mF 0.1 1 10 FREQUENCY (kHz) 100 1000 Figure 20. Output Noise Density vs. Frequency http://onsemi.com 8 NCP706 TYPICAL CHARACTERISTICS OUTPUT NOISE DENSITY (mV/√Hz) 2.5 IOUT = 500 mA VIN = 2.6 V TA = 25°C VOUT(NOM) = 2.2 V 2.0 1.5 1.0 0.5 0.0 0.01 COUT = 4.7 mF COUT = 10 mF 0.1 1 10 100 1000 FREQUENCY (kHz) Figure 21. Output Noise Density vs. Frequency Figure 22. Turn−on by Coupled Input and Enable Pins Figure 23. Turn−on by Coupled Input and Enable Pins Figure 24. Turn−on by Enable Signal Figure 25. Turn−on by Enable Signal http://onsemi.com 9 NCP706 TYPICAL CHARACTERISTICS Figure 26. Line Transient Response Figure 27. Line Transient Response Figure 28. Load Transient Response Figure 29. Load Transient Response http://onsemi.com 10 NCP706 APPLICATIONS INFORMATION Input Decoupling (Cin) Thermal A 4.7 mF capacitor either ceramic or tantalum is recommended and should be connected as close as possible to the pins of NCP706 device. Higher values and lower ESR will improve the overall line transient response. As power across the NCP706 increases, it might become necessary to provide some thermal relief. The maximum power dissipation supported by the device is dependent upon board design and layout. Mounting pad configuration on the PCB, the board material, and also the ambient temperature affect the rate of temperature rise for the part. This is stating that when the NCP706 has good thermal conductivity through the PCB, the junction temperature will be relatively low with high power dissipation. The power dissipation across the device can be roughly represented by the equation: Output Decoupling (Cout) The minimum decoupling value is 4.7 mF and can be augmented to fulfill stringent load transient requirements. The regulator accepts ceramic chip capacitors MLCC. If a tantalum capacitor is used, and its ESR is large, the loop oscillation may result. Larger values improve noise rejection and PSRR. P D + ǒV IN * V OUTǓ * I OUT [W] Enable Operation (eq. 1) The maximum power dissipation depends on the thermal resistance of the case and circuit board, the temperature differential between the junction and ambient, PCB orientation and the rate of air flow. The maximum allowable power dissipation can be calculated using the following equation: The enable pin EN will turn on or off the regulator. These limits of threshold are covered in the electrical specification section of this data sheet. If the enable is not used then the pin should be connected to VIN. Hints P MAX + ǒT J * T AǓńq JA [W] Please be sure the Vin and GND lines are sufficiently wide. If their impedance is high, noise pickup or unstable operation may result. Set external components, especially the output capacitor, as close as possible to the circuit. The sense pin SNS trace is recommended to be kept as far from noisy power traces as possible and as close to load as possible. (eq. 2) Where (TJ − TA) is the temperature differential between the junction and the surrounding environment and qJA is the thermal resistance from the junction to the ambient. Connecting the exposed pad and non connected pin 3 to a large ground pad or plane helps to conduct away heat and improves thermal relief. ORDERING INFORMATION Nominal Ooutput Voltage Marking Package Shipping† NCP706MX21TAG 2.1 V QM XDFN8 (Pb−Free) 3000 / Tape & Reel NCP706MX22TAG 2.2 V QR XDFN8 (Pb−Free) 3000 / Tape & Reel Device †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 NCP706 PACKAGE DIMENSIONS XDFN8 1.6x1.2, 0.4P CASE 711AS ISSUE O D L1 DETAIL A ÍÍÍÍ ÍÍÍÍ ÍÍÍÍ 0.10 C 0.10 C TOP VIEW MOLD CMPD DETAIL B ALTERNATE CONSTRUCTION A DETAIL B A3 A1 8X C SIDE VIEW DETAIL A SEATING PLANE 1.44 PACKAGE OUTLINE D2 1 MILLIMETERS MIN MAX 0.35 0.45 0.00 0.05 0.125 REF 0.13 0.23 1.60 BSC 1.20 1.40 1.20 BSC 0.20 0.40 0.40 BSC 0.15 0.25 0.05 REF RECOMMENDED MOUNTING FOOTPRINT* 0.08 C NOTE 3 DIM A A1 A3 b D D2 E E2 e L L1 ÉÉ ÇÇ EXPOSED Cu 0.10 C 2X NOTES: 1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994. 2. CONTROLLING DIMENSION: MILLIMETERS. 3. COPLANARITY APPLIES TO THE EXPOSED PAD AS WELL AS THE TERMINALS. ALTERNATE TERMINAL CONSTRUCTIONS E PIN ONE IDENTIFIER 2X L L A B 8X 0.35 1.40 4 E2 0.44 8X 1 0.26 0.40 PITCH DIMENSIONS: MILLIMETERS 8X L 8 5 e e/2 8X BOTTOM VIEW *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. b 0.10 C A B 0.05 C ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). 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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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: [email protected] 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: 81−3−5817−1050 http://onsemi.com 12 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative NCP706/D