CMOS LDO Regulators for Portable Equipments 3ch CMOS LDO Regulators BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX No.11020EET06 ●Description BU6650NUX, BU6651NUX, BU6652NUX, BU6653NUX, BU6654NUX, BU6655NUX are high-performance 3ch FULL CMOS regulator with 200-mA outputs, which is mounted on small package VSON008X2030(2.0 mm 3.0 mm 0.6 mm). It has excellent noise characteristics and load responsiveness characteristics despite its low circuit current consumption of 120 A. It is most appropriate for various applications such as power supplies for logic IC, RF, and camera modules. ●Features 1) High-accuracy output voltage of 1% (25 mV on 1.5 V & 1.8 V products) 2) High ripple rejection: 70 dB (Typ., 1 kHz, VOUT≦1.8 V) 3) Compatible with small ceramic capacitor (CIN=2.2F, Co=1.0 F) 4) Low current consumption: 120 A 5) ON/OFF control pin (STBY) of output voltage 6) With built-in over current protection circuit and thermal shutdown circuit 7) With built-in output discharge circuit 8) Adopting small package VSON008X2030 ●Applications Battery-powered portable equipment, etc. ●Line up matrix ■ 200 mA BU665□NUX Series Product Name BU6650NUX BU6651NUX BU6652NUX BU6653NUX BU6654NUX BU6655NUX VOUT1 VOUT2 VOUT3 Package 2.8V 2.8V 2.8V 2.8V 3.3V 3.3V 2.8V 1.8V 2.8V 1.8V 1.8V 2.8V 1.8V 1.5V 1.5V 1.8V 1.5V 1.8V VSON008X2030 www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 1/21 2011.03 - Rev.E BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note ●Absolute maximum rating Parameter Maximum applied power voltage Power dissipation Symbol Ratings VMAX -0.3 ~ Unit +6.0 V 1 Pd 660* MW Maximum junction temperature TjMAX +125 °C Operational temperature range Topr -40 ~ +85 °C Storage temperature range Tstg -55 ~ +125 °C *1 PCB (70 mm 70 mm, thickness 1.6-mm glass epoxy) a standard ROHM board is implemented. Reduced to 6.6 mW/C when used at Ta=25C or higher. ●Recommended operating range (Do not exceed Pd.) Parameter Input power supply voltage Maximum output current Symbol Ratings VIN 2.5 ~ IMAX Unit 5.5 V 200 mA ●Recommended operating conditions Parameter Symbol Ratings Min. TYp. Max. Unit Conditions Input capacitor CIN 1.0* 2 2.2 － μF A ceramic capacitor is recommended. Output capacitor CO 0.5*2 1.0 － μF A ceramic capacitor is recommended. *2 Set the capacity value of the capacitor so that it does not fall below the minimum value, taking temperature characteristics, DC device characteristics, and change with time into consideration. www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 2/21 2011.03 - Rev.E BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note ●Electrical characteristics (Ta=25C, VIN=VOUT+1.0 V (VIN=3.5 V on VOUT=1.8 V and1.5 V products), STBY=1.5 V, CIN=2.2 F, CO=1.0 F, unless otherwise specified) Limits Parameter Symbol Unit Min. Output voltage Typ. Max. VOUT ×0.99 VOUT -25mV VOUT VOUT ×1.01 VOUT +25mV V IIN1 - 40 95 μA IIN2 - 80 190 μA IIN3 - 120 285 μA ISTBY - - 1 μA VOUT Operating current Circuit current (at STBY) IOUT=10 μA, VOUT≥2.5 V IOUT=10 μA, VOUT<2.5 V 70 Ripple rejection RR 55 - dB 65 Input / Output voltage difference VSAT - 360 720 - 300 600 - 220 460 Conditions mV IOUT=0mA STBY×1=1.5V, STBY×2=0V IOUT=0mA STBY×2=1.5V, STBY×1=0V IOUT=0mA STBY×3=1.5V STBY=0 V VRR=-20dBv, fRR=1kHz, IOUT=10 mA 1.5 V≦VOUT≦1.8 V VRR=-20dBv, fRR=1 kHz, IOUT=10 mA 2.5 V≦VOUT VOUT=2.8V (VIN=0.98*VOUT, IOUT=200 mA) VOUT=3.3V (VIN=0.98*VOUT, IOUT=200 mA) VOUT=3.3V (VIN=0.98*VOUT, IOUT=150 mA) VIN=VOUT+1.0 V to 5.5 V, IOUT=10 μA Line regulation VDL - 2 20 mV Load regulation VDLO - 10 80 mV IOUT=0.01 mA to 100 mA Over current protection detection current ILMAX 220 350 700 mA Vo=VOUT*0.8 Output short-circuit current ISHORT 20 70 150 mA Vo=0 V Output discharge resistance RDSC 20 50 80 Ω Standby pull down resistance RSTB 500 1000 2000 kΩ ON VSTBH 1.5 - 5.5 V Output Voltage ON OFF VSTBL -0.3 - 0.3 V Output Voltage OFF VIN=4.0 V, STBY=0 V Control Voltage * This product does not have radiation-proof design. www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 3/21 2011.03 - Rev.E BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note ●Block diagram, recommended circuit diagram, and package dimensions (VSON008X2030) Device Mark a VIN CIN VREF STBY1 VOUT1 STBY COUT Lot No. OCP VREF STBY2 VOUT2 STBY COUT OCP VREF STBY3 VOUT3 STBY COUT OCP Fig.1 Block diagram Fig.2 Package dimensions ●Pin configuration diagram PIN No. 1 PIN NAME VIN 2 STBY1 3 STBY2 4 STBY3 5 6 7 8 GND VOUT3 VOUT2 VOUT1 www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. DESCRIPTION INPUT Pin OUTPUT1 CONTROL Pin ( High : ON, Low : OFF ) OUTPUT2 CONTROL Pin ( High : ON, Low : OFF ) OUTPUT3 CONTROL Pin ( High : ON, Low : OFF ) GROUND Pin OUTPUT3 Pin OUTPUT2 Pin OUTPUT1 Pin 4/21 Device Mark Series Name Device Mark a BU6650NUX U6650 BU6651NUX U6651 BU6652NUX U6652 BU6653NUX U6653 BU6654NUX U6654 BU6655NUX U6655 2011.03 - Rev.E BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note ●Input/Output terminal equivalent circuit schematic 6,7,8pin (VOUT) 5pin (GND) 2,3,4pin (STBY) VIN 1pin (VIN) VIN VOUT STBY Fig.3 Input / Output equivalent circuit Capacity value of ceramic capacitor - DC bias characteristics (Example) 10-V withstand voltage B1characteristics GRM188B11A105KA61D 10 0 -10 Capacitance Change [%] ●About input/output capacitor It is recommended to place a capacitor as close as possible to the pins between the input terminal and GND or between the output terminal and GND. The capacitor between the input terminal and GND becomes valid when source impedance increases or when wiring is long. The larger the capacity of the output capacitor between the output terminal and GND is, the better the stability and characteristics in output load fluctuation become. However, please check the status of actual implementation. Ceramic capacitors generally have variation, temperature characteristics, and direct current bias characteristics and the capacity value also decreases with time depending on the usage conditions. It is recommended to select a ceramic capacitor upon inquiring about detailed data of the related manufacturer. 10-V withstand voltage B characteristics -20 6.3-V withstand voltage B characteristics -30 10-V withstand voltage F characteristics -40 -50 -60 4-V withstand voltage X6S characteristics 10-V withstand voltage F characteristics -70 -80 -90 -100 0 0.5 1 1.5 2 2.5 3 3.5 DC Bias Voltage [V] Fig.4 Capacity – bias characteristics 100 ESR [Ω] ●About the equivalent series resistance (ESR) of a ceramic capacitor Capacitors generally have ESR (equivalent series resistance) and it operates stably in the ESR-IOUT area shown on the right. Since ceramic capacitors, tantalum capacitors, electrolytic capacitors, etc. generally have different ESR, please check the ESR of the capacitor to be used and use it within the stability area range shown in the right graph for evaluation of the actual application. Unstable area 10 Stability area 1 0.1 0.01 0 50 100 150 200 IOUT [mA] Fig.5 Stability area characteristics (Example) www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 5/21 2011.03 - Rev.E 4 BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note ●Reference data total device (Ta=25ºC unless otherwise specified.) 30.00 20.00 10.00 0.00 -40 -15 10 35 60 100.00 150.00 80.00 120.00 Input Current (uA) 40.00 Input Current (uA) Input Current (uA) 50.00 60.00 40.00 20.00 0.00 -40 85 90.00 60.00 30.00 0.00 -15 10 35 60 85 -40 -15 10 Fig. 7 Iin2 vs. Temp Fig. 6 Iin1 vs. Temp 35 60 85 Temp (°C) Temp (°C) Temp (°C) Fig. 8 Iin3 vs. Temp 3.50 1.000 VIN=3.8V 0.900 3.00 Output Voltage (V) Gnd Current (uA) 0.800 0.700 0.600 0.500 0.400 0.300 VIN=3.8V STBY=0V 0.200 0.100 0.000 2.50 2.00 1.50 Temp.=85°C Temp.=25°C Temp.=-40°C 1.00 0.50 -0.100 -40 -15 10 35 60 85 0.00 0 Temp. (°C) 0.5 1 1.5 STBY Voltage (V) Fig. 9 Istby vs Temp (STBY) Fig. 10 STBY Threshold ●Reference data Vo=3.3V (Ta=25ºC unless otherwise specified.) 3.5 3.34 2.5 2.0 IO=0uA IO=100uA IO=50mA IO=200mA 1.5 1.0 Temp.=25°C VIN = STBY 0.5 IO=0uA IO=100uA IO=50mA IO=200mA 3.33 3.32 3.31 3.30 3.29 3.28 3.27 Temp=25°C VIN = STBY 3.26 0.0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 3.2 3.3 3.4 Vin Voltage (V) 3.5 3.6 80 60 40 Temp.=-40°C Temp.=25°C Temp.=85°C 20 0 3.7 0.5 1.5 2 2.5 110 Temp.=25°C 0.20 0.15 Temp.=-40°C 0.10 VIN=0.98 x VOUT STBY = 1.5V 0.05 Temp.=85°C 8 Gnd Current (uA) STBY Current (uA) Temp.=85°C Temp.=25°C 6 Temp.=-40°C 4 2 0 0 0.05 0.1 0.15 0.2 Output Current (A) Fig. 14 Dropout Voltage www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 4 4.5 5 5.5 Temp.=85°C 100 Temp.=25°C 90 Temp.=-40°C 80 70 60 VIN = 4.3V STBY = 1.5V 50 VIN = STBY 0.00 3.5 120 10 0.30 0.25 3 Fig. 13 Circuit Current IGND Fig. 12 Line Regulation 0.35 1 Vin Voltage (V) Vin Voltage (V) Fig. 11 Output Voltage IO=0uA VIN = STBY 0 3.25 0 Dropout Voltage (V) Gnd Current (uA) Output Voltage (V) Output Voltage (V) 100 3.35 3.0 40 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 V STBY Voltage (V) Fig. 15 STBY Input Current 6/21 5 5.5 0 0.05 0.1 0.15 Output Current (A) Fig. 16 IOUT - IGND 2011.03 - Rev.E 0.2 BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note 3.35 3.50 3.34 Temp.=25°C Temp.=-40°C 3.31 3.30 3.29 3.28 Temp.=85°C 3.27 VIN = 4.3V STBY = 1.5V 3.26 VIN=5.5V 2.50 VIN=4.3V 2.00 1.50 1.00 STBY = 1.5V Temp=25℃ 0.50 3.25 2.50 2.00 1.50 0.05 0.1 0.15 0.2 0.50 0.00 0 0.1 0.2 0.3 0.4 0.5 0.6 0 Fig. 17 Load Regulation 1.5 Fig. 19 STBY Threshold 50.00 1.000 3.34 0.900 3.32 3.31 3.30 3.29 3.28 VIN=4.3V STBY=1.5V Io=0.1mA 3.27 3.26 0.800 40.00 30.00 20.00 VIN=4.3V STBY=1.5V Io=0mA 10.00 3.25 Gnd Current (uA) 3.33 Gnd Current (uA) Output Voltage (V) 1 STBY Voltage (V) Fig. 18 OCP Threshold 3.35 0.700 0.600 0.500 0.400 0.300 -15 10 35 60 85 0.100 0.000 -0.100 -40 Temp. (°C) -15 10 35 60 85 -40 Fig. 21 IGND vs Temp 40 30 Vin= 4.3V Io=10mA Ta = 25℃ 60 f= 0 .1 kHz 50 f= 1 0 kHz 40 30 f= 1 0 0 kHz 20 10 Co=1.0μF Cin=none Iout=10mA temp=25℃ 0 0 3.3 10 100 1000 Frequency (kHz) Fig. 23 Ripple Rejection VS Freq. 4.3 Fig. 24 Ripple Rejection VS VIN Fig. 26 Load Response www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 5.3 Input Voltage VIN[V] O u tpu t N o ise D e n sity [μ V / √ H z ] Ripple Rejection [dB] 50 60 85 1.8 f= 1 kHz 70 60 35 Fig. 22 IGND vs Temp (STBY) 80 70 1 10 Temp. (°C) 80 10 -15 Temp. (°C) Fig. 20 VOUT vs Temp 20 VIN=4.3V STBY=0V 0.200 0.00 -40 R ipple R e je c tio n (dB ) 0.5 Output Current (A) Output Current (A) 0.1 Temp.=85°C Temp.=25°C Temp.=-40°C 1.00 0.00 0 VIN=4.3V 3.00 VIN=3.8V Output Voltage (V) 3.32 Output Voltage (V) 3.33 Output Voltage (V) 3.50 3.00 1.6 Co=1.0μF Cin=1.0μF Iout=10mA temp=25℃ 1.4 1.2 1 0.8 0.6 0.4 0.2 0 0.1 1 10 Frequency f [kHz] 100 Fig. 25 Output Noise Spectral Density VS Freq. Fig. 27 Load Response 7/21 2011.03 - Rev.E BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note Fig. 28 Load Response Fig. 29 Load Response Fig. 30 Load Response Current Pulse=10kHz Fig. 31 Load Response Current Pulse=10kHz Fig. 33 Load Response Current Pulse=100kHz Fig. 32 Load Response Current Pulse=100kHz www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 8/21 2011.03 - Rev.E BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note Fig. 34 Start Up Time Iout = 0mA Fig. 37 Start Up Time(STBY=VIN) Iout = 200mA www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. Fig. 35 Start Up Time Iout = 200mA Fig. 38 Discharge Time Iout = 0mA 9/21 Fig. 36 Start Up Time (STBY=VIN) Iout = 0mA Fig. 39 VIN Response Iout = 10mA 2011.03 - Rev.E BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note ●Reference data Vo=2.8V (Ta=25ºC unless otherwise specified.) 3.5 IO=0uA 2.84 2.5 2.0 IO=0uA IO=100uA IO=50mA IO=200mA 1.5 1.0 Temp.=25°C VIN = STBY 0.5 0.0 IO=0uA IO=100uA IO=50mA IO=200mA 2.83 2.82 2.81 80 Gnd Current (uA) Output Voltage (V) Output Voltage (V) 100 2.85 3.0 2.80 2.79 2.78 60 40 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 Temp.=25°C 2.76 VIN = STBY 5.5 0 2.7 2.8 2.9 Vin Voltage (V) 3 3.1 3.2 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 Vin Voltage (V) Fig. 40 Output Voltage Vin Voltage (V) Fig. 42 Circuit Current IGND Fig. 41 Line Regulation 10 0.40 120 0.35 110 Temp.=85°C 0.25 Temp.=25°C 0.20 Temp.=-40°C 0.15 0.10 8 Temp.=85°C Temp.=25°C 6 Temp.=-40°C 4 2 VIN=0.98 x VOUT 0.05 Gnd Current (uA) 0.30 STBY Current (uA) Dropout Voltage (V) Temp.=-40°C Temp.=25°C Temp.=85°C 20 2.77 2.75 0 VIN = STBY 90 Temp.=25°C 80 70 0 0.05 0.1 0.15 STBY = 1.5V 40 0 0.2 VIN = 3.8V 50 0 0.00 Temp.=-40°C 60 VIN = STBY STBY = 1.5V Temp.=85°C 100 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 0 5.5 0.05 Fig. 43 Dropout Voltage 0.15 0.2 Output Currnt (A) STBY Voltage (V) Output Current (A) 0.1 Fig. 44 STBY Input Current Fig. 45 IOUT - IGND 2.85 Output Voltage (V) Output Voltage (V) 2.84 2.83 2.82 2.81 2.80 2.79 2.78 VIN=3.8V STBY=1.5V Io=0.1mA 2.77 2.76 2.75 -40 -15 10 35 60 85 Temp. (°C) Fig. 47 OCP Threshold 80 80 1.6 f= 0 .1 kHz 70 60 Ripple Rejection [dB] Ripple Rejection (dB ) 70 Fig. 48 VOUT vs Temp 50 40 30 20 Vin= 3.8V Io=10mA Ta = 25℃ 10 1 10 f= 1 kHz 50 f= 1 0 kHz 40 f= 1 0 0 kHz 30 Co=1.0μF Cin=none Iout=10mA temp=25℃ 20 10 0 0 0.1 60 100 1000 Frequency (kHz) Fig. 49 Ripple Rejection VS Freq. www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 2.8 3.8 4.8 Input Voltage VIN[V] Fig. 50 Ripple Rejection VS VIN 10/21 O utput N oise D ensity [μ V /√ H z] Fig. 46 Load Regulation Co=1.0μF Cin=1.0μF Iout=10mA temp=25℃ 1.4 1.2 1 0.8 0.6 0.4 0.2 0 0.1 1 10 Frequency f [kHz] 100 Fig. 51 Output Noise Spectral Density VS Freq. 2011.03 - Rev.E BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note Fig. 52 Load Response Fig. 53 Load Response Fig. 54 Load Response Fig. 55 Load Response ⇔ ⇔ Fig. 56 Load Response Current Pulse=10kHz Fig. 57 Load Response Current Pulse=10kHz ⇔ ⇔ Fig. 58 Load Response Current Pulse=100kHz www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. Fig. 59 Load Response Current Pulse=100kHz 11/21 2011.03 - Rev.E BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note Fig. 60 Start Up Time Iout = 0mA Fig. 63 Start Up Time(STBY=VIN) Iout = 200mA www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. Fig. 61 Start Up Time Iout = 200mA Fig. 64 Discharge Time Iout = 0mA 12/21 Fig. 62 Start Up Time (STBY=VIN) Iout = 0mA Fig. 65 VIN Response Iout = 10mA 2011.03 - Rev.E BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note ●Reference data Vo=1.8V (Ta=25ºC unless otherwise specified.) 3.5 1.84 2.5 2.0 1.5 IO=0uA IO=100uA IO=50mA IO=200mA 1.0 0.5 Temp=25°C VIN = STBY IO=0uA IO=100uA IO=50mA IO=200mA 1.83 1.82 1.81 1.80 1.79 1.78 1.77 Temp=25°C VIN = STBY 1.76 0.0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 80 60 40 Temp=-40°C Temp=25°C Temp=85°C 20 1.75 1.85 1.95 Vin Voltage (V) 2.05 2.15 2.25 0 2.35 0.5 1 1.5 2 3 110 80 60 Temp=-40°C Temp=25°C Temp=85°C 40 IO=200mA VIN = STBY 20 Temp=85°C 8 Gnd Current (uA) STBY Current (uA) 100 Temp=25°C 6 Temp=-40°C 4 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 Temp=25°C 90 80 70 Temp=-40°C 60 VIN = 3.5V STBY = 1.5V 50 40 0 5.5 5 Temp=85°C VIN = STBY 0 4.5 100 2 0 0 4 120 10 120 3.5 Fig. 68 Circuit Current IGND Fig. 67 Line Regulation 140 2.5 Vin Voltage (V) Vin Voltage (V) Fig. 66 Output Voltage IO=0uA VIN = STBY 0 1.75 0 Gnd Current (uA) Gnd Current (uA) Output Voltage (V) Output Voltage (V) 100 1.85 3.0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 0 5.5 0.05 Fig. 70 STBY Input Current Fig. 69 Circuit Current IGND 0.1 0.15 0.2 Output Current (A) STBY Voltage (V) Vin Voltage (V) Fig. 71 IOUT - IGND 3.50 Output Voltage (V) Output Voltage (V) Output Voltage (V) 3.00 2.50 2.00 1.50 Temp=85°C Temp=25°C Temp=-40°C 1.00 0.50 0.00 0 0.5 1 1.5 STBY Voltage (V) Fig. 72 Load Regulation Fig. 73 OCP Threshold Fig. 74 STBY Threshold 50.00 1.85 1.82 1.81 1.80 1.79 1.78 VIN=3.5V STBY=1.5V Io=0.1mA 1.77 1.76 G nd Current (uA) 1.83 Input Current (uA) Output Voltage (V) 1.84 40.00 30.00 20.00 VIN=3.5V STBY=1.5V Io=0mA 10.00 0.00 1.75 -40 -15 10 35 60 85 Temp (°C) Fig. 75 VOUT vs. Temp www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. -40 -15 10 35 60 Temp (°C) Fig. 76 IGND vs. Temp 13/21 85 1.000 0.900 0.800 0.700 0.600 0.500 0.400 0.300 0.200 0.100 0.000 -0.100 -40 VIN=3.5V STBY=0V -15 10 35 60 85 Temp (°C) Fig. 77 IGND vs. Temp (STBY) 2011.03 - Rev.E 80 70 70 60 50 40 30 Vin= 3.5V Io=10mA Ta = 25℃ 20 10 0.7 f= 0 .1 kHz O u tpu t N oise D e n sity [μ V / √ H z] 80 Ripple Rejection [dB] R ipple R ejection (dB) BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note f= 1 kHz 60 f= 1 0 kHz 50 40 f= 1 0 0 kHz 30 Co=1.0μF Cin=none Iout=10mA temp=25℃ 20 10 0 0 0.1 1 10 100 1000 Frequency (kHz) Fig. 78 Ripple Rejection VS Freq. 2.5 3.5 4.5 5.5 Co=1.0μF Cin=1.0μF Iout=10mA temp=25℃ 0.6 0.5 0.4 0.3 0.2 0.1 0 0.1 1 Input Voltage VIN[V] Fig. 79 Ripple Rejection VS VIN 10 Frequency f [kHz] 100 Fig. 80 Output Noise Spectral Density VS Freq. Fig. 82 Load Response Fig. 81 Load Response Fig. 83 Load Response Fig. 84 Load Response ⇔ Fig. 85 Load Response Current Pulse=10kHz www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. Fig. 86 Load Response Current Pulse=10kHz 14/21 2011.03 - Rev.E BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note ⇔ Fig. 87 Load Response Current Pulse=100kHz Fig. 89 Start Up Time Iout = 0mA Fig. 92 Start Up Time(STBY=VIN) Iout = 200mA www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. Fig. 88 Load Response Current Pulse=100kHz Fig. 90 Start Up Time Iout = 200mA Fig. 93 Discharge Time Iout = 0mA 15/21 Fig. 91 Start Up Time (STBY=VIN) Iout = 0mA Fig. 94 VIN Response Iout = 10mA 2011.03 - Rev.E BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note ●Reference data Vo=1.5V (Ta=25ºC unless otherwise specified.) 100 1.55 1.54 1.5 1.2 IO=0uA IO=100uA IO=50mA IO=200mA 0.9 0.6 Temp=25°C VIN = STBY 0.3 IO=0uA IO=100uA IO=50mA IO=200mA 1.53 1.52 1.51 1.50 1.49 1.48 1.47 Temp=25°C VIN = STBY 1.46 0.0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 80 60 40 Temp=-40°C Temp=25°C Temp=85°C 20 1.25 1.35 1.45 1.55 1.65 1.75 1.85 1.95 Vin Voltage (V) 0 2.05 2.15 2.25 0.5 1 1.5 Fig. 95 Output Voltage 2 2.5 3 Fig. 96 Line Regulation Temp=-40°C Temp=25°C Temp=85°C 40 20 IO=200mA VIN = STBY Gnd Current (uA) 60 Temp=85°C 8 STBY Current (uA) 80 Temp=25°C 6 Temp=-40°C 4 2 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 5.5 Temp=85°C Temp=25°C 90 80 70 Temp=-40°C 60 VIN = 3.5V STBY = 1.5V 40 0 0 5 100 50 VIN = STBY 0 4.5 120 110 100 4 Fig. 97 Circuit Current IGND 10 120 3.5 Vin Voltage (V) Vin Voltage (V) 140 IO=0uA VIN = STBY 0 1.45 0 Gnd Current (uA) Gnd Current (uA) Output Voltage (V) Output Voltage (V) 1.8 0 0.5 1 1.5 Vin Voltage (V) 2 2.5 3 3.5 4 4.5 5 0 5.5 0.05 Fig. 98 Circuit Current IGND 0.1 0.15 0.2 Output Current (A) STBY Voltage (V) Fig. 99 STBY Input Current Fig. 100 IOUT - IGND 3.50 2.00 Temp=25℃ 1.75 Output Voltage (V) Output Voltage (V) 3.00 2.50 VIN=5.5V 2.00 VIN=3.5V 1.50 1.00 VIN=2.0V 0.50 1.50 1.25 1.00 0.75 Temp=85°C Temp=25°C Temp=-40°C 0.50 0.25 STBY=1.5V 0.00 0.00 0 0.1 0.2 0.3 0.4 0.5 0.6 0 0.5 Output Current (A) Fig. 101 Load Regulation Fig. 102 OCP Threshold 1.55 50.00 1.51 1.50 1.49 1.48 VIN=3.5V STBY=1.5V Io=0.1mA 1.47 1.46 1.45 Gnd Current (uA) Input Current (uA) Output Voltage (V) 1.52 40.00 30.00 20.00 VIN=3.5V STBY=1.5V Io=0mA 10.00 0.00 -40 -15 10 35 60 85 Temp (°C) Fig. 104 VOUT vs. Temp www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. -40 -15 10 35 60 Temp (°C) Fig. 105 IGND vs. Temp 16/21 1.5 Fig. 103 STBY Threshold 1.54 1.53 1 STBY Voltage (V) 85 1.000 0.900 0.800 0.700 0.600 0.500 0.400 0.300 0.200 0.100 0.000 -0.100 -40 VIN=3.5V STBY=0V -15 10 35 60 85 Temp (°C) Fig. 106 IGND vs. Temp (STBY) 2011.03 - Rev.E BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note 80 0.7 f= 0 .1 kHz 70 Ripple Rejection [dB] Ripple Re je c tion (dB ) 70 O u tpu t N o is e D e n s ity [μ V / √ H z ] 80 60 50 40 30 Vin= 3.5V Io=10mA Ta = 25℃ 20 10 f= 1 kHz 60 f= 1 0 kHz 50 40 30 f= 1 0 0 kHz Co=1.0μF Cin=none Iout=10mA temp=25℃ 20 10 0 0 2.5 0.1 1 10 100 1000 Frequency (kHz) Fig. 107 Ripple Rejection vs. Freq. 3.5 4.5 Input Voltage VIN[V] Fig. 108 Ripple Rejection vs. VIN (Iout=10 mA) 5.5 Co=1.0μF Cin=1.0μF Iout=10mA temp=25℃ 0.6 0.5 0.4 0.3 0.2 0.1 0 0.1 1 10 Frequency f [kHz] Fig. 109 Output Noise Spectral Density vs. Freq. Fig. 110 Load Response Fig. 111 Load Response Fig. 112 Load Response Fig. 113 Load Response Fig. 114 Load Response Current Pulse=10 kHz www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 100 Fig. 115 Load Response Current Pulse=10 kHz 17/21 2011.03 - Rev.E BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note Fig. 116 Load Response Current Pulse=100 kHz Fig. 118 Start-up Time Iout = 0 mA Fig. 121 Startup Time (STBY=VIN) Iout = 200mA www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. Fig. 117 Load Response Current Pulse=100 kHz Fig. 119 Start-up Time Iout = 200 mA Fig. 122 Discharge Time Iout = 0 mA 18/21 Fig. 120 Start-up Time (STBY=VIN) Iout = 0 mA Fig. 123 VIN Response Iout = 10 mA 2011.03 - Rev.E BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note ●About power dissipation (Pd) As for power dissipation, an approximate estimate of the heat reduction characteristics and internal power consumption of IC are shown, so please use these for reference. Since power dissipation changes substantially depending on the implementation conditions (board size, board thickness, metal wiring rate, number of layers and through holes, etc.), it is recommended to measure Pd on a set board. Exceeding the power dissipation of IC may lead to deterioration of the original IC performance, such as causing operation of the thermal shutdown circuit or reduction in current capability. Therefore, be sure to prepare sufficient margin within power dissipation for usage. Calculation of the maximum internal power consumption of IC (PMAX) PMAX=(VIN-VOUT1)×IOUT1(MAX.)＋(VIN-VOUT2)×IOUT2(MAX.)＋(VIN-VOUT3)×IOUT3(MAX.) (VIN : Input voltage VOUT1,2,3 : Output voltage IOUT(MAX) : Maximum output current) 0.7 0.6 0.66W * Please design the margin so that PMAX becomes is than Pd (PMAXPd) within the usage temperature range. Pd [W] 0.5 0.4 0.3 - Standard ROHM board Size: 70 mm 70 mm 1.6 mm Material : Glass epoxy board 0.2 0.1 0 0 25 50 75 85 100 125 Ta [℃] Fig.124 VSON008X2030 Power dissipation heat reduction characteristics (Reference) www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 19/21 2011.03 - Rev.E BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note ●Other notes - About absolute maximum rating Breakage may occur when absolute maximum ratings such as applied voltage and operating temperature range are exceeded. Short mode or open mode cannot be specified at occurrence of a break, so please prepare physical safety measures (e.g., fuse) if such special mode in which the absolute maximum rating is exceeded can be assumed. - About GND potential Please be sure that the potential of the GND terminal is the lowest in any operating condition. - About thermal design Please provide thermal design with sufficient margin, taking power dissipation (Pd) in actual usage conditions into consideration. - About short between pins and miss-attachment Please be careful regarding the IC direction and misalignment at attachment onto a printed circuit board. Miss-attachment may cause a break of IC. Short caused by foreign matter between outputs, output and power supply, or GND may also lead to a break. - About operation in a strong electromagnetic field Please note that usage in a strong electromagnetic field may cause malfunction. - About common impedance Please give due consideration to wiring of the power source and GND by reducing common-mode ripple or making ripple as small as possible (e.g., making the wiring as thick and short as possible, or reducing ripple by LC), etc. - About STBY terminal voltage Set STBY terminal voltage to 0.3 V or less to put each channel into a standby state and to 1.5 V or more to put each channel into an operating state. Do not fix STBY terminal voltage to 0.3 V or more and 1.5 V or less or do not lengthen the transition time. This may cause malfunction or failure. When shorting the VIN terminal and STBY terminal for usage, the status will be “STBY=VIN＝LOW” at turning the power OFF, and discharge of the VOUT terminal cannot operate, which means voltage may remain for a certain time in the VOUT terminal. Since turning the power ON again in this state may cause overshoot, turn the power ON for use after the VOUT terminal is completely discharged. - About over current protection circuit Output has a built-in over current protection circuit, which prevents IC break at load short. Note that this protection circuit is effective for prevention of breaks due to unexpected accidents. Please avoid usage by which the protection circuit operates continuously. - About thermal shutdown Output is OFF when the thermal circuit operates since a temperature protection circuit is built in to prevent thermal breakdown. However, it recovers when the temperature returns to a certain temperature. The thermal circuit operates at emergency such as overheating of IC. Since it is prepared to prevent IC breakdown, please do not use it in a state in which protection works. - About reverse current For applications on which reverse current is assumed to flow into IC, it is recommended to prepare a path to let the current out by putting a bypass diode between the VIN-VOUT terminals. Reverse current VIN STBY OUT GND Fig.125 Example of bypass diode connection - About testing on a set board When connecting a capacitor to a terminal with low impedance for testing on a set board, please be sure to discharge for each process since IC may be stressed. As a countermeasure against static electricity, prepare grounding in the assembly process and take sufficient care in transportation and storage. In addition, when connecting a capacitor to a jig in a testing process, please do so after turning the power OFF and remove it after turning the power OFF. www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 20/21 2011.03 - Rev.E BU6650NUX,BU6651NUX,BU6652NUX,BU6653NUX,BU6654NUX,BU6655NUX Technical Note ●Ordering part number B U 6 Part No. 5 5 0 N Part No. 6650 6651 6652 6653 6654 6655 U X - Package NUX: VSON008X2030 T R Packaging and forming specification TR: Embossed tape and reel VSON008X2030 <Tape and Reel information> 3.0±0.1 2.0±0.1 1.0MAX 1PIN MARK 0.25 TR The direction is the 1pin of product is at the upper right when you hold ( reel on the left hand and you pull out the tape on the right hand ) (0.22) +0.03 0.02 –0.02 1.5±0.1 4000pcs 0.5 1 4 8 5 1.4±0.1 0.3±0.1 C0.25 Embossed carrier tape Quantity Direction of feed S 0.08 S Tape +0.05 0.25 –0.04 1pin Reel (Unit : mm) www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 21/21 Direction of feed ∗ Order quantity needs to be multiple of the minimum quantity. 2011.03 - Rev.E Notice Notes No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production. Great care was taken in ensuring the accuracy of the information specified in this document. However, should you incur any damage arising from any inaccuracy or misprint of such information, ROHM shall bear no responsibility for such damage. The technical information specified herein is intended only to show the typical functions of and examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by ROHM and other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. The Products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices). The Products specified in this document are not designed to be radiation tolerant. While ROHM always makes efforts to enhance the quality and reliability of its Products, a Product may fail or malfunction for a variety of reasons. Please be sure to implement in your equipment using the Products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM shall bear no responsibility whatsoever for your use of any Product outside of the prescribed scope or not in accordance with the instruction manual. The Products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuelcontroller or other safety device). ROHM shall bear no responsibility in any way for use of any of the Products for the above special purposes. If a Product is intended to be used for any such special purpose, please contact a ROHM sales representative before purchasing. If you intend to export or ship overseas any Product or technology specified herein that may be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to obtain a license or permit under the Law. Thank you for your accessing to ROHM product informations. More detail product informations and catalogs are available, please contact us. ROHM Customer Support System http://www.rohm.com/contact/ www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. R1120A