NCP703 300 mA, Ultra-Low Quiescent Current, IQ 12 mA, Ultra-Low Noise, LDO Voltage Regulator Noise sensitive RF applications such as Power Amplifiers in satellite radios, infotainment equipment, and precision instrumentation require very clean power supplies. The NCP703 is 300 mA LDO that provides the engineer with a very stable, accurate voltage with ultra low noise and very high Power Supply Rejection Ratio (PSRR) suitable for RF applications. The device doesn’t require any additional noise bypass capacitor to achieve ultra−low noise performance. In order to optimize performance for battery operated portable applications, the NCP703 employs dynamic Iq management for ultra−low quiescent current consumption at light−load conditions and great dynamic performance. www.onsemi.com 5 1 MARKING DIAGRAMS Features • Operating Input Voltage Range: 2.0 V to 5.5 V • Available in Fixed Voltage Options: 0.8 to 3.5 V • • • • • • • • • • • 1 XDFN6 MX SUFFIX CASE 711AE TSOP−5 SN SUFFIX CASE 483 5 1 XM G XXXAYW G Contact Factory for Other Voltage Options Ultra−Low Quiescent Current of Typ. 12 mA Ultra−Low Noise: 13 mVRMS from 100 Hz to 100 kHz Very Low Dropout: 180 mV Typical at 300 mA ±2% Accuracy Over Load/Line/Temperature High PSRR: 68 dB at 1 kHz Internal Soft−Start to Limit the Turn−On Inrush Current Thermal Shutdown and Current Limit Protections Stable with a 1 mF Ceramic Output Capacitor Available in TSOP−5 and XDFN 1.5 x 1.5 mm Package Active Output Discharge for Fast Turn−Off These are Pb−Free Devices 1 X, XXX = Specific Device Code M = Date Code A = Assembly Location Y = Year W = Work Week G = Pb−Free Package PIN CONNECTIONS 1 IN OUT GND EN Typical Applicaitons • • • • 5−Pin TSOP−5 (Top View) PDAs, Mobile Phones, GPS, Smartphones Wireless Handsets, Wireless LAN, Bluetooth, Zigbee Portable Medical Equipment Other Battery Powered Applications VIN CIN 1 OUT N/C GND VOUT IN 1 mF EN ON OUT NCP703 GND COUT 6−Pin XDFN 1.5 x 1.5 mm (Top View) ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 16 of this data sheet. Figure 1. Typical Application Schematic May, 2016 − Rev. 3 IN N/C EN 1 mF Ceramic OFF © Semiconductor Components Industries, LLC, 2016 N/C 1 Publication Order Number: NCP703/D NCP703 IN ENABLE LOGIC EN BANDGAP REFERENCE UVLO INTEGRATED SOFT−START THERMAL SHUTDOWN MOSFET DRIVER WITH CURRENT LIMIT OUT AUTO LOW POWER MODE ACTIVE DISCHARGE EN GND Figure 2. Simplified Schematic Block Diagram Table 1. PIN FUNCTION DESCRIPTION Pin No. XDFN6 Pin No. TSOP−5 Pin Name 1 5 OUT Regulated output voltage pin. A small 1 mF ceramic capacitor is needed from this pin to ground to assure stability. 2 4 N/C Not connected. 3 2 GND Power supply ground. Connected to the die through the lead frame. Soldered to the copper plane allows for effective heat dissipation. 4 3 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. N/C Not connected. This pin can be tied to ground to improve thermal dissipation. 5 6 1 IN Description Input pin. A small capacitor is needed from this pin to ground to assure stability. Table 2. 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) 150 °C Input Voltage (Note 1) Maximum Junction 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 Storage Temperature 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. 1. Refer to ELECTRICAL CHARACTERISTICS 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 AEC−Q100−002 (EIA/JESD22−A114) ESD Machine Model tested per AEC−Q100−003 (EIA/JESD22−A115) Latchup Current Maximum Rating tested per JEDEC standard: JESD78. www.onsemi.com 2 NCP703 Table 3. THERMAL CHARACTERISTICS (Note 3) Symbol Value Thermal Characteristics, TSOP−5, Thermal Resistance, Junction−to−Air Thermal Characterization Parameter, Junction−to−Lead (Pin 2) qJA yJL 241 129 Thermal Characteristics, XDFN6 1.5 x 1.5 mm Thermal Resistance, Junction−to−Air Thermal Characterization Parameter, Junction−to−Board qJA yJB 146 77 Rating Unit °C/W °C/W 3. Single component mounted on 1 oz, FR4 PCB with 645 mm2 Cu area. Table 4. ELECTRICAL CHARACTERISTICS −40°C ≤ TJ ≤ 125°C; VIN = VOUT(NOM) + 0.5 V or 2.0 V, whichever is greater; VEN = 0.9 V, IOUT = 10 mA, CIN = COUT = 1 mF unless otherwise noted. Typical values are at TJ = +25°C. (Note 4) Parameter Test Conditions Operating Input Voltage Symbol Min Typ Max Unit 5.5 V 1.9 V +2 % VIN 2.0 Undervoltage Lock−out VIN rising UVLO 1.2 Output Voltage Accuracy VOUT + 0.5 V ≤ VIN ≤ 5.5 V, IOUT = 0 − 300 mA VOUT −2 Line Regulation VOUT + 0.5 V ≤ VIN ≤ 4.5 V, IOUT = 10 mA RegLINE 450 mV/V VOUT + 0.5 V ≤ VIN ≤ 5.5 V, IOUT = 10 mA RegLINE 600 mV/V Load Regulation IOUT = 0 mA to 300 mA RegLOAD 20 mV/mA Load Transient IOUT = 1 mA to 300 mA or 300 mA to 1 mA in 1 ms, COUT = 1 mF TranLOAD −100/ +150 mV Dropout Voltage (Note 5) IOUT = 300 mA, VOUT(nom) = 2.5 V VDO 180 300 mV Output Current Limit VOUT = 90% VOUT(nom) ICL 450 750 mA Quiescent Current IOUT = 0 mA IQ 12 20 mA Ground Current IOUT = 300 mA IGND 200 mA Shutdown Current VEN ≤ 0.4 V, TJ = +25°C IDIS 0.12 mA VEN ≤ 0 V, VIN = 2.0 to 4.5 V, TJ = −40 to +85°C IDIS 0.55 310 1.6 2 mA EN Pin Threshold Voltage High Threshold Low Threshold VEN Voltage increasing VEN Voltage decreasing V EN Pin Input Current VEN = 5.5 V IEN 100 Turn−On Time COUT = 1.0 mF, from assertion EN pin to 98% VOUT(nom) tON 200 ms Power Supply Rejection Ratio VIN = 3 V, VOUT = 2.5 V IOUT = 300 mA PSRR 70 68 53 dB Output Noise Voltage VOUT = 2.5 V, VIN = 3 V, IOUT = 300 mA f = 100 Hz to 100 kHz VN 13 mVrms Thermal Shutdown Temperature Temperature increasing from TJ = +25°C TSD 160 °C Thermal Shutdown Hysteresis Temperature falling from TSD TSDH VEN_HI VEN_LO f = 100 Hz f = 1 kHz f = 10 kHz 0.9 0.4 − 20 500 − nA °C 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. 4. 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. 5. Characterized when VOUT falls 100 mV below the regulated voltage at VIN = VOUT(NOM) + 0.5 V. www.onsemi.com 3 NCP703 TYPICAL CHARACTERISTICS OUTPUT VOLTAGE NOISE (mV/rtHz) 10 1 RMS Output Noise (mV) IOUT = 10 mA 0.1 0.01 VIN = 2.0 V VOUT = 0.8 V CIN = COUT = 1 mF MLCC, X7R, 1206 size IOUT = 1 mA IOUT 10 Hz − 100 kHz 100 Hz − 100 kHz 1 mA 18.45 17.77 10 mA 17.18 16.43 300 mA 14.14 13.11 IOUT = 300 mA 0.001 0.01 0.1 1 10 100 1000 FREQUENCY (kHz) Figure 3. Output Voltage Noise Spectral Density for VOUT = 0.8 V, COUT = 1 mF OUTPUT VOLTAGE NOISE (mV/rtHz) 10 1 RMS Output Noise (mV) IOUT = 300 mA 0.1 0.01 0.001 VIN = 2.0 V VOUT = 0.8 V CIN = 1 mF COUT = 4.7 mF MLCC, X7R, 1206 size 0.01 IOUT = 10 mA IOUT 10 Hz − 100 kHz 100 Hz − 100 kHz 1 mA 14.07 13.14 10 mA 16.59 15.83 300 mA 15.46 14.53 IOUT = 1 mA 0.1 1 10 100 1000 FREQUENCY (kHz) Figure 4. Output Voltage Noise Spectral Density for VOUT = 0.8 V, COUT = 4.7 mF OUTPUT VOLTAGE NOISE (mV/rtHz) 10 1 RMS Output Noise (mV) IOUT = 10 mA 0.1 0.01 0.001 VIN = 3.8 V VOUT = 3.3 V CIN = COUT = 1 mF MLCC, X7R, 1206 size 0.01 0.1 IOUT 10 Hz − 100 kHz 100 Hz − 100 kHz 1 mA 20.29 17.06 10 mA 19.76 16.11 300 mA 18.74 15.46 IOUT = 1 mA IOUT = 300 mA 1 10 100 1000 FREQUENCY (kHz) Figure 5. Output Voltage Noise Spectral Density for VOUT = 3.3 V, COUT = 1 mF www.onsemi.com 4 NCP703 TYPICAL CHARACTERISTICS OUTPUT VOLTAGE NOISE (mV/rtHz) 10 1 RMS Output Noise (mV) IOUT = 300 mA 0.1 VIN = 3.8 V VOUT = 3.3 V CIN = 1 mF COUT = 4.7 mF MLCC, X7R, 1206 size 0.01 IOUT 10 Hz − 100 kHz 100 Hz − 100 kHz 13.52 1 mA 17.64 10 mA 19.54 15.96 300 mA 21.50 18.71 IOUT = 10 mA IOUT = 1 mA 0.001 0.01 0.1 1 10 100 1000 FREQUENCY (kHz) Figure 6. Output Voltage Noise Spectral Density for VOUT = 3.3 V, COUT = 4.7 mF 160 315 VOUT = 0.8 V IGND, GROUND CURRENT (mA) IGND, GROUND CURRENT (mA) 350 280 VOUT = 3.3 V 245 VOUT = 2.5 V 210 175 140 VIN = VOUT + 0.5 V CIN = 1 mF COUT = 1 mF MLCC, X7R, 1206 size 105 70 35 0 VOUT = 3.3 V VOUT = 2.5 V 120 100 VOUT = 0.8 V 80 VIN = VOUT + 0.5 V CIN = 1 mF COUT = 1 mF MLCC, X7R, 1206 size 60 40 20 0 0 50 100 150 200 250 300 0 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 IOUT, OUTPUT CURRENT (mA) IOUT, OUTPUT CURRENT (mA) Figure 7. Ground Current vs. Output Current Figure 8. Ground Current vs. Output Current from 0 mA to 2 mA 160 270 240 TJ = 25°C TJ = 125°C IGND, GROUND CURRENT (mA) IGND, GROUND CURRENT (mA) 140 210 TJ = −40°C 180 150 120 VIN = VOUT + 0.5 V CIN = 1 mF COUT = 1 mF MLCC, X7R, 1206 size 90 60 30 0 140 TJ = 25°C 120 TJ = −40°C 100 TJ = 125°C 80 60 VIN = VOUT + 0.5 V CIN = 1 mF COUT = 1 mF MLCC, X7R, 1206 size 40 20 0 0 30 60 90 120 150 180 210 240 270 300 0 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 IOUT, OUTPUT CURRENT (mA) IOUT, OUTPUT CURRENT (mA) Figure 9. Ground Current vs. Output Current at Temperatures Figure 10. Ground Current vs. Output Current 0 mA to 2 mA at Temperatures www.onsemi.com 5 NCP703 TYPICAL CHARACTERISTICS 40 13.5 VOUT = 0.8 V Iq, QUIESCENT CURRENT (mA) Iq, QUIESCENT CURRENT (mA) 14.0 13.0 12.5 VOUT = 3.3 V 12.0 VOUT = 2.5 V 11.5 11.0 VIN = VOUT + 0.5 V CIN = 1 mF COUT = 1 mF MLCC, X7R 1206 size 10.5 10.0 9.5 9.0 −40 −20 20 40 60 80 100 120 20 10 140 2 3 4 5 6 TJ, JUNCTION TEMPERATURE (°C) VIN, INPUT VOLTAGE (V) Figure 11. Quiescent Current vs. Temperature Figure 12. Quiescent Current vs. Input Voltage 0.805 CIN = 1 mF COUT = 1 mF MLCC, X7R 1206 size 3.0 2.5 VOUT = 3.3 V VOUT, OUTPUT VOLTAGE (V) VOUT, OUTPUT VOLTAGE (V) 30 0 0 3.5 VOUT = 2.5 V 2.0 1.5 VOUT = 0.8 V 1.0 0.5 0 0.804 0.803 0.802 VIN = 2 V VOUT = 0.8 V CIN = 1 mF COUT = 1 mF 0.801 0.800 0.799 0.798 0.797 0.796 0.795 −40 −20 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 0 20 40 60 80 100 120 140 VIN, INPUT VOLTAGE (V) TJ, JUNCTION TEMPERATURE (°C) Figure 13. Output Voltage vs. Input Voltage Figure 14. Output Voltage vs. Temperature – 0.8 V 3.3050 VIN = VOUT + 0.5 V VOUT = 2.5 V CIN = 1 mF COUT = 1 mF 2.5025 2.5015 2.5005 2.4995 2.4985 2.4975 2.4965 −40 −20 0 20 40 60 80 100 120 VOUT, OUTPUT VOLTAGE (V) 2.5035 VOUT, OUTPUT VOLTAGE (V) CIN = 1 mF COUT = 1 mF VOUT = 3.3 V MLCC, X7R 1206 size 140 3.3025 3.3000 3.2975 3.2950 3.2925 VIN = VOUT + 0.5 V VOUT = 3.3 V CIN = 1 mF COUT = 1 mF 3.2900 3.2875 3.2850 −40 −20 0 20 40 60 80 100 120 140 TJ, JUNCTION TEMPERATURE (°C) TJ, JUNCTION TEMPERATURE (°C) Figure 15. Output Voltage vs. Temperature – 2.5 V Figure 16. Output Voltage vs. Temperature – 3.3 V www.onsemi.com 6 NCP703 TYPICAL CHARACTERISTICS 1000 900 900 800 800 700 700 REGLINE (mV/V) REGLINE (mV/V) 1000 600 500 400 300 200 VOUT = 1.8 V VIN = 2.3 to 5.5 V CIN = 1 mF COUT = 1 mF IOUT = 10 mA 100 0 −40 −20 0 20 600 500 400 300 200 40 60 80 100 120 100 0 −40 −20 140 REGLOAD (mV) REGLINE (mV/V) 16 VOUT = 3.3 V VIN = 3.8 to 5.5 V CIN = 1 mF COUT = 1 mF IOUT = 10 mA 0 −40 −20 120 140 0 20 14 12 VOUT = 1.8 V VIN = 2.3 V CIN = 1 mF COUT = 1 mF IOUT = 0 mA to 300 mA 10 8 6 40 60 80 100 120 2 0 −40 −20 140 0 20 40 60 80 100 120 140 TJ, JUNCTION TEMPERATURE (°C) TJ, JUNCTION TEMPERATURE (°C) Figure 19. Line Regulation vs. Temperature – 3.3 V Figure 20. Load Regulation vs. Temperature – 1.8 V 20 18 VOUT = 2.8 V VIN = 3.3 V CIN = 1 mF COUT = 1 mF IOUT = 0 mA to 300 mA 16 REGLOAD (mV) REGLOAD (mV) 100 4 20 12 80 20 600 14 60 Figure 18. Line Regulation vs. Temperature – 2.8 V 800 16 40 Figure 17. Line Regulation vs. Temperature − 1.8 V 18 18 20 TJ, JUNCTION TEMPERATURE (°C) 1000 200 0 TJ, JUNCTION TEMPERATURE (°C) 1200 400 VOUT = 2.8 V VIN = 3.3 to 5.5 V CIN = 1 mF COUT = 1 mF IOUT = 10 mA 10 8 6 14 12 VOUT = 3.3 V VIN = 3.8 V CIN = 1 mF COUT = 1 mF IOUT = 0 mA to 300 mA 10 8 6 4 4 2 0 −40 −20 2 0 −40 −20 0 20 40 60 80 100 120 140 0 20 40 60 80 100 120 140 TJ, JUNCTION TEMPERATURE (°C) TJ, JUNCTION TEMPERATURE (°C) Figure 21. Load Regulation vs. Temperature – 2.8 V Figure 22. Load Regulation vs. Temperature – 3.3 V www.onsemi.com 7 NCP703 TYPICAL CHARACTERISTICS 250 TJ = 25°C VOUT = 2.5 V CIN = 1 mF COUT = 1 mF 200 VDROP, DROPOUT VOLTAGE (mV) VDROP, DROPOUT VOLTAGE (mV) 250 TJ = 125°C 150 100 TJ = −40°C 50 0 0 50 100 150 200 250 300 IOUT = 300 mA 175 IOUT = 200 mA 150 125 100 IOUT = 100 mA 75 50 25 0 −40 −20 0 20 40 60 80 100 120 140 TJ, JUNCTION TEMPERATURE (°C) Figure 23. Dropout vs. Output Current – 2.5 V Figure 24. Dropout vs. Temperature – 2.5 V 750 700 675 VEN, ENABLE VOLTAGE (mV) VOUT = 3.3 V VIN = 3.8 V CIN = 1 mF COUT = 1 mF IOUT = 10 mA 725 650 625 600 575 550 −40 −20 0 20 40 60 80 100 120 VOUT = 3.3 V VIN = 3.8 V CIN = 1 mF COUT = 1 mF IOUT = 10 mA 725 700 675 650 625 600 575 550 −40 −20 140 0 20 40 60 80 100 120 140 TJ, JUNCTION TEMPERATURE (°C) TJ, JUNCTION TEMPERATURE (°C) Figure 25. Enable Threshold − High Figure 26. Enable Threshold − Low ISHORT, SHORT CIRCUIT CURRENT (mA) VEN, ENABLE VOLTAGE (mV) 200 VOUT = 2.5 V CIN = 1 mF COUT = 1 mF IOUT, OUTPUT CURRENT (mA) 750 600 ICL, CURRENT LIMIT (mA) 225 550 500 450 VIN = 2.3 V VOUT = 1.8 V CIN = 1 mF COUT = 1 mF MLCC, X7R, size 1206 400 350 300 −40 −20 0 20 40 60 80 100 120 140 600 550 500 450 VIN = 2.3 V VOUT = 1.8 V CIN = 1 mF COUT = 1 mF MLCC, X7R, size 1206 400 350 300 −40 −20 0 20 40 60 80 100 TJ, JUNCTION TEMPERATURE (°C) TJ, JUNCTION TEMPERATURE (°C) Figure 27. Output Current Limit Figure 28. Short Circuit Limit www.onsemi.com 8 120 140 NCP703 TYPICAL CHARACTERISTICS 100 Iout = 1 mA Iout = 10 mA Iout = 100 mA Iout = 200 mA Iout = 300 mA 90 80 70 RR, RIPPLE REJECTION (dB) RR, RIPPLE REJECTION (dB) 100 60 50 VIN = 2.3 V VOUT = 1.8 V CIN = none COUT = 1 mF MLCC, X7R, 1206 size 40 30 20 10 0 0.01 0.1 1 10 100 1000 20 10,000 0.01 0.1 1 10 100 1000 10,000 100 Iout = 1 mA Iout = 10 mA Iout = 100 mA Iout = 200 mA Iout = 300 mA RR, RIPPLE REJECTION (dB) RR, RIPPLE REJECTION (dB) 30 Figure 30. Power Supply Rejection Ratio, VOUT = 2.5 V 60 50 VIN = 3.8 V VOUT = 3.3 V CIN = none COUT = 1 mF MLCC, X7R, 1206 size 0.01 0.1 Cout = 1mF Cout = 4.7m Cout = 10m 90 80 70 60 50 40 VIN = 3.8 V VOUT = 3.3 V CIN = none MLCC, X7R, 1206 size 30 20 10 0 1 10 100 1000 0.01 10,000 0.1 1 10 100 1000 10,000 F, FREQUENCY (kHz) F, FREQUENCY (kHz) Figure 31. Power Supply Rejection Ratio, VOUT = 3.3 V Figure 32. Power Supply Rejection Ratio, VOUT = 3.3 V, IOUT = 10 mA 10 100 Cout = 1mF Cout = 4.7m Cout = 10m 90 80 Unstable Region 70 60 ESR (W) RR, RIPPLE REJECTION (dB) VIN = 3.0 V VOUT = 2.5 V CIN = none COUT = 1 mF MLCC, X7R, 1206 size 40 Figure 29. Power Supply Rejection Ratio, VOUT = 1.8 V 70 10 0 50 F, FREQUENCY (kHz) 80 20 60 F, FREQUENCY (kHz) 90 30 80 70 10 0 100 40 Iout = 1 mA Iout = 10 mA Iout = 100 mA Iout = 200 mA Iout = 300 mA 90 50 40 30 20 10 0 VIN = 3.8 V VOUT = 3.3 V CIN = none MLCC, X7R, 1206 size VOUT = 3.3 V 1 VOUT = 0.8 V Stable Region VIN = 5.5 V CIN = COUT = 1 mF MLCC, X7R, 1206 size 0.1 0.01 0.1 1 10 100 1000 10,000 0 50 100 150 200 250 300 F, FREQUENCY (kHz) IOUT, OUTPUT CURRENT (mA) Figure 33. Power Supply Rejection Ratio, VOUT = 3.3 V, IOUT = 300 mA Figure 34. Output Capacitor ESR vs. Output Current www.onsemi.com 9 NCP703 VEN IINRUSH 1 V / div 1 V / div IINRUSH 600 mV / div VEN VOUT VOUT 100 ms / div 100 ms / div 600 mV / div VEN IOUT 1 V / div VOUT VOUT 1 ms / div 500 mV / div Figure 38. Enable Turn−off Response VIN = 3.8 V to 4.8 V VOUT = 3.3 V IOUT = 10 mA CIN = 1 mF COUT = 1 mF 20 mV / div 20 mV / div 500 mV / div Figure 37. Enable Turn−on Response – COUT = 10 mF trise = 1 ms COUT = 4.7 mF COUT = 1 mF 100 ms / div VIN VIN = 3.8 V VOUT = 3.3 V VEN = 0.9 V IOUT = 10 mA CIN = 1 mF VOUT VIN tFALL = 1 ms VIN = 3.8 V to 4.8 V VOUT = 3.3 V IOUT = 10 mA CIN = 1 mF COUT = 1 mF VOUT 2 ms / div 2 ms / div Figure 39. Line Transient Response – Rising Edge, VOUT = 3.3 V Figure 40. Line Transient Response – Falling Edge, VOUT = 3.3 V www.onsemi.com 10 100 mA / div VIN = 3.8 V VOUT = 3.3 V VEN = 0.9 V IOUT = 10 mA CIN = 1 mF COUT = 1 mF IINRUSH 1 V / div Figure 36. Enable Turn−on Response – COUT = 4.7 mF 100 mA / div 600 mV / div Figure 35. Enable Turn−on Response − COUT = 1 mF VEN VIN = 3.8 V VOUT = 3.3 V VEN = 0.9 V IOUT = 10 mA CIN = 1 mF COUT = 4.7 mF 100 mA / div VIN = 3.8 V VOUT = 3.3 V VEN = 0.9 V IOUT = 10 mA CIN = 1 mF COUT = 1 mF 100 mA / div 600 mV / div TYPICAL CHARACTERISTICS NCP703 100 mA / div IOUT 40 mV / div VIN = 2 V VOUT = 0.8 V CIN = 1 mF (MLCC) VOUT COUT = 4.7 mF COUT = 1 mF IOUT VIN = 2 V VOUT = 0.8 V CIN = 1 mF (MLCC) COUT = 1 mF COUT = 4.7 mF VOUT 50 ms / div Figure 41. Load Transient Response − Rising Edge, VOUT = 0.8 V, IOUT = 1 mA to 300 mA, COUT = 1 mF, 4.7 mF Figure 42. Load Transient Response – Falling Edge, VOUT = 0.8 V, IOUT = 1 mA to 300 mA, COUT = 1 mF, 4.7 mF VIN = 2 V VOUT = 0.8 V CIN = 1 mF (MLCC) Cout = 1 mF (MLCC) IOUT VOUT 100 mA / div 20 ms / div 40 mV / div 40 mV / div 100 mA / div 40 mV / div 100 mA / div TYPICAL CHARACTERISTICS trise = 10 ms trise = 1 ms VIN = 3.8 V VOUT = 3.3 V CIN = 1 mF (MLCC) IOUT VOUT COUT = 4.7 mF 20 ms / div 10 ms / div Figure 43. Load Transient Response − Rising Edge, VOUT = 0.8 V, IOUT = 1 mA to 300 mA, tRISE = 1 ms, 10 ms Figure 44. Load Transient Response – Rising Edge, VOUT = 3.3 V, IOUT = 1 mA to 300 mA, COUT = 1 mF, 4.7 mF 100 mA / div VIN = 3.8 V VOUT = 3.3 V CIN = 1 mF (MLCC) IOUT VIN = 3.8 V VOUT = 3.3 V CIN = 1 mF (MLCC) Cout = 1 mF (MLCC) IOUT VOUT COUT = 1 mF 40 mV / div 40 mV / div 100 mA / div COUT = 1 mF COUT = 4.7 mF VOUT trise = 1 ms trise = 10 ms 50 ms / div 10 ms / div Figure 45. Load Transient Response – Falling Edge, VOUT = 3.3 V, IOUT = 1 mA to 300 mA, COUT = 1 mF, 4.7 mF Figure 46. Load Transient Response – Rising Edge, VOUT = 3.3 V, IOUT = 1 mA to 300 mA, tRISE = 1 ms, 10 ms www.onsemi.com 11 NCP703 TYPICAL CHARACTERISTICS 300 mV / div VOUT = 3.3 V IOUT = 1 mA CIN = 1 mF (MLCC) Cout = 1 mF (MLCC) VOUT Thermal Shutdown VIN = 3.8 V VOUT = 3.3 V CIN = 1 mF (MLCC) Cout = 1 mF (MLCC) 300 mA / div 600 mV / div Short Circuit VIN VOUT IOUT 5 ms / div 10 ms / div Figure 47. Turn−on/off − Slow Rising VIN Figure 48. Short Circuit and Thermal Shutdown www.onsemi.com 12 NCP703 APPLICATIONS INFORMATION General The NCP703 is a high performance 300 mA Low Dropout Linear Regulator. This device delivers excellent noise and dynamic performance. Thanks to its adaptive ground current feature the device consumes only 12 mA of quiescent current at no−load condition. The regulator features ultra−low noise of 13 mVRMS, PSRR of 68 dB at 1 kHz and very good load/line transient performance. Such excellent dynamic parameters and small package size make the device an ideal choice for powering the precision analog and noise sensitive circuitry in portable applications. The LDO achieves this ultra low noise level output without the need for a noise bypass capacitor. A logic EN input provides ON/OFF control of the output voltage. When the EN is low the device consumes as low as typ. 120 nA from the IN pin. The device is fully protected in case of output overload, output short circuit condition and overheating, assuring a very robust design. Figure 49. Capacitance Change vs. DC Bias There is no requirement for the minimum value of Equivalent Series Resistance (ESR) for the COUT but the maximum value of ESR should be less than 900 mΩ. Larger output capacitors and lower ESR could improve the load transient response or high frequency PSRR as shown in typical characteristics. It is not recommended to use tantalum capacitors on the output due to their large ESR. The equivalent series resistance of tantalum capacitors is also strongly dependent on the temperature, increasing at low temperature. The tantalum capacitors are generally more costly than ceramic capacitors. Input Capacitor Selection (CIN) It is recommended to connect a minimum of 1 mF Ceramic X5R or X7R capacitor close to the IN pin of the device. This capacitor will provide a low impedance path for unwanted AC signals or noise modulated onto constant input voltage. There is no requirement for the min. /max. ESR of the input capacitor but it is recommended to use ceramic capacitors for their low ESR and ESL. A good input capacitor will limit the influence of input trace inductance and source resistance during sudden load current changes. Larger input capacitor may be necessary if fast and large load transients are encountered in the application. No−load Operation The regulator remains stable and regulates the output voltage properly within the ±2% tolerance limits even with no external load applied to the output. Output Decoupling (COUT) Enable Operation The NCP703 requires an output capacitor connected as close as possible to the output pin of the regulator. The recommended capacitor value is 1 mF and X7R or X5R dielectric due to its low capacitance variations over the specified temperature range. The NCP703 is designed to remain stable with minimum effective capacitance of 0.1 mF to account for changes with temperature, DC bias and package size. Especially for small package size capacitors such as 0402 the effective capacitance drops rapidly with the applied DC bias. Refer to the Figure 49, for the capacitance vs. package size and DC bias voltage dependence. The EN pin is used to enable/disable the LDO and to deactivate/activate the active discharge function. If the EN pin voltage is <0.4 V the device is guaranteed to be disabled. The pass transistor is turned−off so that there is virtually no current flow between the IN and OUT. The active discharge transistor is active so that the output voltage VOUT is pulled to GND through a 320 Ω resistor. In the disable state the device consumes as low as typ. 120 nA from the VIN. If the EN pin voltage >0.9 V the device is guaranteed to be enabled. The NCP703 regulates the output voltage and the active discharge transistor is turned−off. www.onsemi.com 13 NCP703 APPLICATIONS INFORMATION Thermal Shutdown The EN pin has internal pull−down current source with typ. value of 110 nA which assures that the device is turned−off when the EN pin is not connected. Build in 2 mV hysteresis into the EN prevents from periodic on/off oscillations that can occur due to noise. In the case where the EN function isn’t required the EN should be tied directly to IN. When the die temperature exceeds the Thermal Shutdown threshold (TSD − 160°C typical), Thermal Shutdown event is detected and the device is disabled. The IC will remain in this state until the die temperature decreases below the Thermal Shutdown Reset threshold (TSDU − 140°C typical). Once the IC temperature falls below the 140°C the LDO is enabled again. The thermal shutdown feature provides the protection from a catastrophic device failure due to accidental overheating. This protection is not intended to be used as a substitute for proper heat sinking. For reliable operation junction temperature should be limited to +125°C maximum. Undervoltage Lockout The internal UVLO circuitry assures that the device becomes disabled when the VIN falls below typ. 1.5 V. When the VIN voltage ramps−up the NCP703 becomes enabled, if VIN rises above typ. 1.6 V. The 100 mV hysteresis prevents from on/off oscillations that can occur due to noise on VIN line. Power Dissipation As power dissipated in the NCP703 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 the ambient temperature affect the rate of junction temperature rise for the part. The maximum power dissipation the NCP703 can handle is given by: Output Current Limit Output Current is internally limited within the IC to a typical 490 mA. The NCP703 will source this amount of current if the output voltage drops down to 90% of the nominal VOUT. When the Output Voltage is directly shorted to ground (VOUT = 0 V), the short circuit protection will limit the output current to 520 mA (typ). The current limit and short circuit protection will work properly up to VIN = 5.5 V at TA = 25°C. There is no limitation for the short circuit duration. P D(MAX) + Internal Soft−Start circuit q JA P D [ V INǒI GND@I OUTǓ ) I OUTǒV IN * V OUTǓ (eq. 2) 450 0.50 400 0.45 350 0.40 PD(MAX), TA = 25°C, 1 OZ Cu qJA, 1 OZ Cu 250 150 0.30 qJA, 2 OZ Cu 200 0 100 200 300 400 500 PCB Copper Area (mm2) 0.25 600 0.20 700 Figure 50. qJA and PD(MAX) vs. Copper Area (TSOP−5) www.onsemi.com 14 0.35 PD(MAX), Maximum Power Dissipation (W) PD(MAX), TA = 25°C, 2 OZ Cu 300 (eq. 1) The power dissipated by the NCP703 for given application conditions can be calculated from the following equations: NCP703 contains an internal soft−start circuitry to protect against large inrush currents which could otherwise flow during the start−up of the regulator. Soft−start feature protects against power bus disturbances and assures a controlled and monotonic rise of the output voltage. qJA, Junction to Ambient Thermal Resistance (°C/W) ƪ) 125oC * T Aƫ NCP703 APPLICATIONS INFORMATION 0.90 PD(MAX), TA = 25°C, 2 OZ Cu 350 0.80 300 0.70 250 PD(MAX), TA = 25°C, 1 OZ Cu 200 0.60 0.50 qJA, 1 OZ Cu 150 qJA, 2 OZ Cu 100 0 100 200 300 400 500 PCB Copper Area (mm2) 600 700 0.40 PD(MAX), Maximum Power Dissipation (W) qJA, Junction to Ambient Thermal Resistance (°C/W) 400 0.30 800 Figure 51. qJA vs. Copper Area (XDFN6) Reverse Current Output Noise The PMOS pass transistor has an inherent body diode which will be forward biased in the case that VOUT > VIN. Due to this fact in cases, where the extended reverse current condition can be anticipated the device may require additional external protection. The IC is designed for ultra−low noise output voltage without external noise filter capacitor (Cnr). Figures 3 − 6 shows NCP703 noise performance. Generally the noise performance in the indicated frequency range improves with increasing output current. Although even at IOUT = 1 mA the noise levels are below 20 mVRMS. Load Regulation The NCP703 features very good load regulation of typically 6 mV in 0 mA to 300 mA range. In order to achieve this very good load regulation a special attention to PCB design is necessary. The trace resistance from the OUT pin to the point of load can easily approach 100 mΩ which will cause 30 mV voltage drop at full load current, deteriorating the excellent load regulation. Turn−On Time The turn−on time is defined as the time period from EN assertion to the point in which VOUT will reach 98% of its nominal value. This time is dependent on various application conditions such as VOUT(NOM), COUT, TA. PCB Layout Recommendations To obtain good transient performance and good regulation characteristics place CIN and COUT capacitors close to the device pins and make the PCB traces wide. In order to minimize the solution size, use 0402 capacitors. Larger copper area connected to the pins will also improve the device thermal resistance. The actual power dissipation can be calculated from Equation 2. Line Regulation The IC features very good line regulation of 0.6 mV/V measured from VIN = VOUT + 0.5 V to 5.5 V. For battery operated applications it may be important that the line regulation from VIN = VOUT + 0.5 V up to 4.5 V is only 0.45 mV/V. Power Supply Rejection Ratio The NCP703 features very good Power Supply Rejection ratio. If desired the PSRR at higher frequencies in the range 100 kHz – 10 MHz can be tuned by the selection of COUT capacitor and proper PCB layout. www.onsemi.com 15 NCP703 ORDERING INFORMATION Device Voltage Option Marking NCP703MX18TCG 1.8 V J NCP703MX28TCG 2.8 V K NCP703MX30TCG 3.0 V L NCP703MX33TCG 3.3 V P NCP703SN18T1G 1.8 V AEC NCP703SN19T1G 1.9 V AEG NCP703SN28T1G 2.8 V AED NCP703SN30T1G 3.0 V AEE NCP703SN33T1G 3.3 V AEF NCP703SN35T1G 3.5 V AEH Package Shipping † XDFN6 3000 / Tape & Reel TSOP5 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. www.onsemi.com 16 NCP703 PACKAGE DIMENSIONS XDFN6 1.5x1.5, 0.5P CASE 711AE ISSUE B D 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 0.10 AND 0.20mm FROM TERMINAL TIP. L A B L1 PIN ONE REFERENCE 0.10 C 2X 2X 0.10 C ÍÍÍ ÍÍÍ ÍÍÍ DETAIL A ALTERNATE TERMINAL CONSTRUCTIONS E DIM A A1 A3 b D E e L L1 L2 ÉÉÉ ÉÉÉ EXPOSED Cu TOP VIEW MOLD CMPD DETAIL B ALTERNATE CONSTRUCTIONS A DETAIL B 0.05 C A3 A1 RECOMMENDED MOUNTING FOOTPRINT* 0.05 C C SIDE VIEW DETAIL A e 5X SEATING PLANE 6X 0.35 0.73 5X L 3 1 MILLIMETERS MIN MAX 0.35 0.45 0.00 0.05 0.13 REF 0.20 0.30 1.50 BSC 1.50 BSC 0.50 BSC 0.40 0.60 --0.15 0.50 0.70 1.80 L2 0.83 0.50 PITCH DIMENSIONS: MILLIMETERS 6 4 6X *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 BOTTOM VIEW 0.05 C B NOTE 3 www.onsemi.com 17 NCP703 PACKAGE DIMENSIONS TSOP−5 CASE 483 ISSUE M NOTE 5 2X NOTES: 1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994. 2. CONTROLLING DIMENSION: MILLIMETERS. 3. MAXIMUM LEAD THICKNESS INCLUDES LEAD FINISH THICKNESS. MINIMUM LEAD THICKNESS IS THE MINIMUM THICKNESS OF BASE MATERIAL. 4. DIMENSIONS A AND B DO NOT INCLUDE MOLD FLASH, PROTRUSIONS, OR GATE BURRS. MOLD FLASH, PROTRUSIONS, OR GATE BURRS SHALL NOT EXCEED 0.15 PER SIDE. DIMENSION A. 5. OPTIONAL CONSTRUCTION: AN ADDITIONAL TRIMMED LEAD IS ALLOWED IN THIS LOCATION. TRIMMED LEAD NOT TO EXTEND MORE THAN 0.2 FROM BODY. D 5X 0.20 C A B 0.10 T M 2X 0.20 T B 5 1 4 2 S 3 K B DETAIL Z G A A TOP VIEW DIM A B C D G H J K M S DETAIL Z J C 0.05 H SIDE VIEW C SEATING PLANE END VIEW MILLIMETERS MIN MAX 2.85 3.15 1.35 1.65 0.90 1.10 0.25 0.50 0.95 BSC 0.01 0.10 0.10 0.26 0.20 0.60 0_ 10 _ 2.50 3.00 SOLDERING FOOTPRINT* 0.95 0.037 1.9 0.074 2.4 0.094 1.0 0.039 0.7 0.028 SCALE 10:1 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. ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries. ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein. ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor 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. Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards, regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON Semiconductor 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. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized application, Buyer shall indemnify and hold ON Semiconductor 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 ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. 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 19521 E. 32nd Pkwy, Aurora, Colorado 80011 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 www.onsemi.com 18 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative NCP703/D