CMOS LDO Regulator for Portable Equipments Dual, Low-Dropout Linear Regulator BD7003NUX, BD7004NUX No.12020ECT09 ●Descriptions The BD7003NUX, BD7004NUX are dual channels, 300mA low-dropout voltage regulator output at each channel. The output voltage range is from 1.2V to 3.3V by operating range from 2.5V to 5.5V. The output voltages, VOUT1 and VOUT2, are determined at power up by the state of P1 and P2(see the table of “Output-Voltage Programming”). The BD7003NUX, BD7004NUX offer 1.8% accuracy and low-dropout. The shutdown current is near the zero current which is suitable for battery powered device. The BD7003NUX, BD7004NUX are mounted on VSON008X2020(2.0mmX2.0mmX0.6mm), which contributes to the space-saving design of set. ●Features 1) 2-channel 300mA, CMOS-type LDOs. 2) Pin-Programmable Output Voltage. (9 steps adjustable VO；See the Table of “Output-Voltage Programming”.) 3) LDOs Power ON/OFF Enable Control. 4) 2.0mm×2.0mm Package. 5) Small Ceramic Output Capacitors(1μF). 6) Equipped with Over Current Limiter and Thermal Shutdown Circuit(TSD) . ●Applications Battery-powered portable equipment, etc. ●Absolute Maximum Ratings (Ta = 25℃) Parameter Symbol Ratings Unit VIN -0.3 ～ 7 V Maximum Input Voltage 1 (P1,P2,EN1,EN2) VINMAX1 -0.3 ～ 7 V Maximum Input Voltage 2 (Vout1,Vout2) VINMAX2 -0.3～Vin+0.3 V Pd 1360*1 mW Operating Temperature Range Topr -40 ～ +85 ℃ Storage Temperature Range Tstg -55 ～ +150 ℃ Maximum Supply Voltage (VIN) Power Dissipation * * 1 This is the allowable loss of when it is mounted on a ROHM specification board 40mm×40mm×1.5mmt To use at temperature higher than 25C , derate 10.9mW per 1℃ This product is not especially designed to be protected from radioactivity. ●Recommended Operating Range (Ta=-40～+85℃) Parameter Input Power Supply Voltage Range www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. Symbol Ratings Unit VIN 2.5～5.5 V 1/13 2012.01 - Rev.C Technical Note BD7003NUX,BD7004NUX ●Power Dissipation 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-VOUT)×IOUT(MAX.) (VIN: Input voltage VOUT: Output voltage IOUT(MAX): Maximum output current) Measurement conditions Evaluation Board 1 (Double-side Board) Layout of Board for Measurement (Unit: mm) Top Layer (Top View) IC Implementation Position Bottom Layer (Top View) 1.36W Power Dissipation Thermal Resistance θja=91.9℃/W 1. 6 Evaluation Bord1 1. 4 1.36W Power Dissipation : Pd (W) 1. 2 1. 0 0. 8 0. 6 0. 4 0. 2 0. 0 0 25 50 75 100 125 150 175 200 Ambient Temperature :Ta (℃ ) Fig.1. VSON008X2020 Power dissipation heat reduction characteristics (Reference) * Please design the margin so that PMAX becomes is than Pd (PMAXPd) within the usage temperature range. www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. 2/13 2012.01 - Rev.C Technical Note BD7003NUX,BD7004NUX ●Electrical Characteristics (Vin=3.7V, EN1=EN2=Vin,Ta =+25℃, unless otherwise noted.) Parameter Symbol Output Voltage range Typ Max Unit Condition VOUT 1.2 - 3.3 V VIN 2.5 - 5.5 V Δvouta -1.8 - 1.8 % Iout=1mA, VOUT≧1.5V Δvoutb -30 - +30 mV Iout=1mA, VOUT=1.2V Imax 300 - - mA Isc - 150 - mA - 55 95 - 35 65 Input Voltage range Output Voltage Accuracy Limits Min Maximum Output Current Short Circuit Current Ground Pin Current Iq Dropout Voltage Vdrop μA Iout=0mA One LDO shutdown, Iout=0mA - 120 170 VIN=2.5V, VOUT=2.6V, Iout=100mA - 90 140 VIN=2.7V, VOUT=2.8V, Iout=100mA 80 130 VIN=2.9V, VOUT=3.0V, Iout=100mA - 70 120 - 360 510 - 270 420 VIN=2.7V, VOUT=2.8V, Iout=300mA 240 390 VIN=2.9V, VOUT=3.0V, Iout=300mA mV - 210 360 Line Regulation ΔVLNR - 0.02 0.2 %/V Load Regulation ΔVLDR - 0.2 0.6 % Ripple Rejection PSRR - 66 - dB en - 150 - μVrms ViH 1.2 - - ViL - - 0.5 Output Noise VOUT = 0V VIN=3.2V, VOUT=3.3V,Iout=100mA VIN=2.5V, VOUT=2.6V, Iout=300mA VIN=3.2V, VOUT=3.3V, Iout=300mA VIN=VOUT+1V to VIN=5.5V, Iout=10mA Iout=1mA to 300mA f=100Hz,Iout=10mA@VOUT=1.5V fBW=10Hz to 100kHz;Iout=10mA ●EN1, EN2 Enable Input Threshold Enable Input Leakage Current Shutdown Supply Current V Regulator enabled Regulator shutdown Ien - 0.1 1 μA Ven=VIN , Ta=+25℃ IQSHDN - 0.1 1 μA Vout=0V , Ta=+25℃ *This product is not especially designed to be protected from radioactivity. Output-Voltage Programming BD7003NUX PIN Name Set up BD7004NUX P1 P2 VOUT1 VOUT2 VOUT1 VOUT2 OPEN OPEN 1.50 2.80 1.20 1.50 OPEN GND 1.80 2.60 1.20 1.80 OPEN VIN 1.80 2.70 1.80 1.50 GND OPEN 1.80 2.80 1.80 1.80 GND GND 1.80 2.90 1.80 3.00 GND VIN 2.60 2.80 1.80 3.30 VIN OPEN 2.80 2.80 2.80 3.00 VIN GND 2.90 2.90 3.00 3.00 VIN VIN 2.80 3.30 3.30 3.30 Output Voltage Programming Input (P1、P2) Output voltages, VOUT1 and VOUT2, are determined at power up by the state of P1 and P2 (see the table of “Output-Voltage Programming”). Subsequent charges to P1 and P2 do not change the output voltages unless the supply power is cycled, or all EN inputs are simultaneously driven low to shutdown the device. Shutdown (EN1, EN2) The BD7003NUX, BD7004NUX have independent shutdown control inputs, EN1 and EN2. Driving both EN1 and EN2 low will shut down the entire device, reducing supply current to 1μA max. Connecting EN1 and EN2 to a logic-high or VIN will enable the corresponding output(s). It is prohibited to open EN1, EN2 switches. www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. 3/13 2012.01 - Rev.C Technical Note BD7003NUX,BD7004NUX ●Typical Application Circuit BD7003NUX, BD7004NUX VIN VIN CIN 1μF VOUT1 COUT1 1μF P1 P2 VIN EN1 VIN EN2 VOUT2 COUT2 1μF GND Figure2. Application Circuit *It is prohibited to open EN1, EN2 switches. www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. 4/13 2012.01 - Rev.C Technical Note BD7003NUX,BD7004NUX ●Package Dimensions (VSON008X2020) Device name Lot No. [Unit: mm] Device name Marking BD7003NUX BD7003 BD7004NUX BD7004 ●Pin Descriptions PIN description (Top View) Note : Recommend connecting the Thermal Pad to the GND for excellent power dissipation. PIN No. Name I/O 1 VIN 2 EN1 3 4 5 ESD Diode Function IN GND I - O Voltage Supply I - O Enable Input1 P2 I O O Control Output-Voltage PIN2 P1 I O O Control Output-Voltage PIN1 EN2 I - O Enable Input2 6 GND - O - GND PIN 7 VOUT2 O - O LDO1 Output1 8 VOUT1 O - O LDO2 Output2 www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. 5/13 2012.01 - Rev.C Technical Note BD7003NUX,BD7004NUX ●Equivalent Circuit 2pin, 5pin (EN) 3pin, 4pin (P) 3kΩ 3kΩ 3-State Decoder H OPEN L 8pin, 7pin (VOUT) ●Block Diagram VIN 1 EN1 2 EN2 5 P1 4 P2 3 P SHUTDOWN AND POWER - ON CONTROL ERROR AMP OUTPUT VOLTAGE CONTROL EN1 OVER CURRENT PROTECTION DISCHARGE CIRCUIT 8 VOUT1 LDO1 VIN VREF & TSD LDO2 GND 6 7 VOUT2 Fig.3. Block Diagram www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. 6/13 2012.01 - Rev.C Technical Note BD7003NUX,BD7004NUX ●Typical Operating Characteristics ※The test conditions for the Typical Operating Characteristics are VIN=3.7V, CIN=1.0uF, COUT=1.0uF, Ta=25℃, Unless otherwise noted. 1.6 1.4 VOUT1=1.2V Io=300mA Io=10mA 0.6 Io=1mA 0.4 Ｉo=0mA Io=300mA 1 0.8 Io=10mA 0.6 Io=1mA 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 1 0 0 5.5 Io=1mA Ｉo=0mA 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 0 0.5 1 1.5 Input Voltage(V) Input Voltage(V) 2 2.5 3 3.5 4 4.5 5 5.5 Input Voltage(V) Fig.6. Output Voltage (VOUT1=3.3V) Fig.5. Output Voltage (VOUT2=1.5V) Fig.4. Output Voltage (VOUT1=1.2V) 1.6 1.4 3.5 1.4 VOUT1= 1.2V Out put Volt age(V) Io=1mA 0.8 Io=10mA Io=300mA 0.6 0.4 3 Ｉo=0mA 1.2 Ｉo=0mA 1 Io=1mA 1 VOUT2=1.5V Io=10mA 0.8 Io=300mA 0.6 0.2 0 0 2 .5 3 3.5 4 4 .5 Input Volt age(V) 5 Io=300mA 0 3 3.5 4 Input Volt age(V) 4 .5 5 4.2 Fig.9. Line Regulation (VOUT1=3.3V) 100 P1=P2=GND P1=P2=GND P1=P2=GND P1=P2=GND 6 5 Ta=85℃ Ta=25℃ Ta=-40℃ 2 80 60 G n d C u rre n t ( u A ) G n d C u rre n t (u A ) 7 5.2 Input Voltage(V) 100 P1=P2=GND 8 4.7 5 .5 Fig.8. Line Regulation (VOUT2=1.5V) P1=P2=GND 3 1.5 0.5 2 .5 10 4 Io=1mA Io=10mA 3.7 5.5 Fig.7. Line Regulation (VOUT1=1.2V) 9 Io=0mA 2 1 0.4 0.2 VOUT1=3.3V 2.5 Output Voltage(V) 1.2 Out put Volt age(V) Io=10mA 1.5 0 0 Io=300mA 2 0.5 0.2 0 G n d C u rre n t (u A ) 2.5 Ｉo=0mA 0.4 0.2 O u tp u t V o l tag e(V) 1 0.8 VOUT1=3.3V 3 1.2 O u tp u t Vo l tag e(V) O u tp u t V o l tag e(V ) 3.5 VOUT2=1.5V 1.4 1.2 Ta=85℃ Ta=25℃ Ta=-40℃ 40 20 80 Ta=85℃ Ta=25℃ Ta=-40℃ 60 40 20 1 0 0 0.5 1 1.5 2 2.5 3 3.5 Input Voltage (V) 4 4.5 5 Fig.10. Circuit Current (VOUT1=1.8V,VOUT2=2.9V) EN1=EN2=GND 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 0 0.5 Input Voltage (V) Fig.11. Circuit Current (VOUT1=1.8V,VOUT2=2.9 V) EN1=VIN, EN2=GND 100 0.9 P1=P2=GND 0.8 60 40 Ta=85℃ Ta=25℃ Ta=-40℃ 20 E N C u rre n t (u A ) 80 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 Input Voltage (V) Fig.13. Circuit Current (VOUT1=1.8V,VOUT2=2.9V) EN1=EN2=VIN www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. 2 2.5 3 3.5 Inpuｔ Voltage (V) 4 4.5 5 5.5 1.0 0.9 P1=P2=GND 0.7 0.6 0.5 0.4 0.3 Ta=85℃ Ta=25℃ Ta=-40℃ 0.2 0.1 0.8 P1=P2=GND 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 0 1 1.5 Fig.12. Circuit Current (VOUT1=1.8V,VOUT2=2.9V) EN1=GND, EN2=VIN 1.0 P1=P2=GND G n d C u rre n t (u A ) 0 0 5.5 E N C u rre n t (u A ) 0 Ta=85℃ Ta=25℃ Ta=-40℃ 0.0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 Input Voltage (V) Input Voltage(V) Fig.14. EN1 Input Current 7/13 Fig.15. EN2 Input Current 2012.01 - Rev.C Technical Note BD7003NUX,BD7004NUX 2.0 3.0 P1=P 2 GN 4 3.5 2.5 3 Ta=85℃ Ta=25℃ Ta=-40℃ 1.0 2.0 1.5 Ta=85℃ Ta=25℃ Ta=-40℃ 1.0 2.5 Vout1 [V] O u tp u t V o lta g e (V ) O u tp u t V o lta g e (V ) 1.5 2 1.5 1 0.5 0.5 0.0 0.5 1 1.5 0 0.5 EN Voltage (V) 1 1.5 -40 4 10 9 P1=P2=GND 80 Gnd Current (uA) G n d C u rre n t (u A ) 7 Io=0mA 2 1.5 6 5 4 3 1 85 P1=P2=GND 3 Io=0.1mA 60 100 P1=P2=GND 8 Vou t2 [V] 10 35 Tem p [°C] Fig.18. VOUT - Temp (VOUT1=1.8V) Fig.17. EN2 Threshold (VOUT2=2.9V) 3.5 2.5 -15 EN Voltage (V) Fig.16. EN1 Threshold (VOUT1=1.8V) Io=0.1mA 0 0.0 0 Io=0mA 0.5 60 40 20 2 1 0.5 0 -40 0 0 -40 -15 10 Tem p [°C] 35 60 -40 85 -15 10 35 60 10 35 60 85 Temp (°C) Temp (°C) Fig.20. Icc - Temp (VOUT1=1.8V,VOUT2=2.9V) EN1=EN2=GND Fig.19. VOUT – Temp (VOUT2=3.0V) -15 85 Fig.21.Icc- Temp (VOUT1=1.8V,VOUT2=2.9V) EN1=VIN, EN2=GND 1.00 100 100 P1=P2=GND P1=P2=GND P1=P 2 GN P1=P2=GND 80 60 40 VIN=2.7V 0.80 0.70 DropoutVoltage(V) 80 G n d C u rre n t (u A Gnd Current (uA) 0.90 P1=P2=GND 60 40 20 20 0 0 Temp=85℃ 0.60 Temp=25℃ 0.50 Temp=-40℃ 0.40 0.30 0.20 -40 -15 10 35 60 0.10 -40 85 -15 10 85 VIN=2.7V 0.00 0 Fig.23. Icc - Temp (VOUT1=1.8V,VOUT2=2.9V) EN1=EN2=VIN 1.00 0.90 60 Temp (°C) Temp (°C) Fig.22. Icc - Temp (VOUT1=1.8V,VOUT2=2.9V) EN1=GND, EN2=VIN 35 0.05 0.1 0.15 IOUT(A) 0.2 0.25 0.3 Fig.24. Drop Out Voltage (VOUT1=2.8V) 4 4 3.5 3.5 0.80 3 3 2.5 2.5 Temp=85℃ 0.50 Temp=25℃ 0.40 Temp=25°C Temp=-40°C VOUT2 [V] 0.60 VOUT1 [V] DropoutVoltage(V) 0.70 Temp=85°C 2 1.5 Temp=-40℃ 0.30 Temp=-40°C Temp=25°C Temp=85°C 2 1.5 1 1 0.5 0.5 0.20 0.10 0 0 0.00 00 0 0.05 0.1 0.15 IOUT(A) 0.2 0.25 0.3 Fig.25. Drop Out Voltage (VOUT2=2.8V) www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. 50 0.05 100 0.10 150 0.15 200 0.20 250 0.25 Iout1[A] Fig.26. Load Regulation (VOUT1=1.2V) 8/13 300 0.30 0 50 0.05 100 0.1 150 0.15 200 0.2 250 0.25 300 0.3 Iout2[A] Fig.27. Load Regulation (VOUT2=1.5V) 2012.01 - Rev.C Technical Note BD7003NUX,BD7004NUX 4 4 4 3.5 3.5 Temp=-40°C Temp=25°C Temp=85°C 3.5 3 Temp=25°C 3 3 2 1.5 1 0.5 2.5 2.5 VOUT2 [V] V OUT1 [V ] 2.5 VOUT1 [V] Temp=-40° Temp=85°C 2 1 1 0.5 0.5 00 0 50 100 150 200 250 50 0.05 100 0.1 300 Fig.28. Load Regulation (VOUT1=2.8V) 200 0.2 250 0.25 0 50 0.05 100 0.1 150 0.15 VOUT2 300 0.3 1msec/div 1V/div EN1 VOUT1 1V/div VIN=3.7 VIN=3.7 Fig.33. Discharge Time (VOUT1=1.8V) IOUT=0mA Fig.32. Start Up Time (VOUT2=2.9V) IOUT=0mA Fig.31. Start Up Time (VOUT1=1.8V) IOUT=0mA 250 0.25 Fig.30. Load Regulation (VOUT2=3.3V) 1V/div VIN=3.7 200 0.2 Iout2[mA] 10μsec/div 1V/div EN2 1V/div Temo=85℃ 0 300 0.3 Fig.29. Load Regulation (VOUT2=3.0V) 10μsec/div 1V/div VOUT1 150 0.15 Iout1[A] Iout1[A] EN1 Temo=25℃ 1.5 1.5 0 0 Temo=-40℃ 2 1msec/div 1V/div EN2 4.7V ch1 VIN 4.7V 3.7V VOUT2 ch1 VIN ch2 VOUT1 3.7V 1V/div ch2 VOUT1 1.2V 1.5V VIN=3.7 Fig.35. VIN Response (VOUT1=1.2V) IOUT=50mA Fig.34. Discharge Time (VOUT2=2.9V) IOUT=0mA 4.7V ch1 VIN 4.7V 3.7V ch1 VIN ch2 ch2 VOUT1 VOUT1 www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. ch1 VIN ch2 VOUT1 3.3V 3.0V Fig.37. VIN Response (VOUT1=1.8V) IOUT=50mA 4.7V 3.7V 3.7V 1.8V Fig.36. VIN Response (VOUT1=1.5V) IOUT=50mA Fig.38. VIN Response (VOUT2=3.0V) IOUT=50mA 9/13 Fig.39. VIN Response (VOUT2=3.3V) IOUT=50mA 2012.01 - Rev.C Technical Note BD7003NUX,BD7004NUX 40μsec/div Iout＝1mA->150mA Vout1 40μsec/div 100mA/div Iout＝1mA->150mA 200mV/div 1.2V 100mA/div Iout＝150mA->1mA 100mA/div Vout1 200mV/div Vout1 3.3V Fig.40. Load Response (VOUT1=1.2V) IOUT=1mA→150mA 40μsec/div 200mV/div 1.2V Fig.41. Load Response (VOUT1=3.3V) IOUT=1mA→150mA Fig.42. Load Response (VOUT1=1.2V) IOUT=150mA→1mA 40μsec/div Iout＝150mA->1mA 100mA/div Vout1 200mV/div 3.3V Fig.43. Load Response (VOUT1=3.3V) IOUT=150mA→1mA www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. 10/13 2012.01 - Rev.C Technical Note BD7003NUX,BD7004NUX ●Example of EN1&EN2 used (P1=GND,P2=OPEN, VOUT1=1.8V, VOUT2=2.8V) Output overshoot conditions Whenever the LDO is turned ON, LDO1 output overshoot occurs in certain boot conditions. In CASE2, the overshoot value is minimum, which boot order is EN1→EN2. The maximum over shoot occurs in CASE3, which boot order is EN2→EN1. The overshoot value differs between input voltages(VIN), output voltage setting and EN1, EN2 input timing interval. CASE1: EN1 & EN2 Pins are shorted VIN=5.5V,EN2=EN1 VIN=3.7V,EN2=EN1 EN1(5V/div) EN1(5V/div) VOUT2(0.5V/div) VOUT2(0.5V/div) VOUT1(0.5V/div) VOUT1(0.5V/div) 20ms/div 20ms/div EN1 & EN2 Pins are independent CASE2: EN1→EN2 operation(L→H) VIN=5.5V,EN2=L(OFF) VIN=3.7V,EN2=L(OFF) EN1(5V/div) EN1(5V/div) VOUT1(0.5V/div) VOUT1(0.5V/div) VOUT2(0.5V/div) VOUT2(0.5V/div) 20ms/div 20ms/div CASE3: EN2→EN1 operation(L→H) VIN=3.7V,EN2=H(ON) EN1(5V/div) VIN=5.5V,EN2=H(ON) VOUT2(0.5V/div) VOUT1(0.5V/div) 20ms/div www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. 11/13 EN1(5V/div) VOUT2(0.5V/div) VOUT1(0.5V/div) 20ms/div 2012.01 - Rev.C Technical Note BD7003NUX,BD7004NUX ●Notes for use (1) Absolute maximum ratings If applied voltage (VIN), operating temperature range (Topr), or other absolute maximum ratings are exceeded, there is a risk of damage. Since it is not possible to identify short, open, or other damage modes, if special modes in which absolute maximum ratings are exceeded are assumed, consider applying fuses or other physical safety measures. (2) Recommended operating range This is the range within which it is possible to obtain roughly the expected characteristics. For electrical characteristics, it is those that are guaranteed under the conditions for each parameter. Even when these are within the recommended operating range, voltage and temperature characteristics are indicated. (3) Reverse connection of power supply connector There is a risk of damaging the IC by reverse connection of the power supply connector. For protection from reverse connection, take measures such as externally placing a diode between the power supply and the power supply pin of the IC. (4) Power supply lines In the design of the board pattern, make power supply and GND line wiring low impedance. When doing so, although the digital power supply and analog power supply are the same potential, separate the digital power supply pattern and analog power supply pattern to deter digital noise from entering the analog power supply due to the common impedance of the wiring patterns. Similarly take pattern design into account for GND lines as well. Furthermore, for all power supply pins of the IC, in conjunction with inserting capacitors between power supply and GND pins, when using electrolytic capacitors, determine constants upon adequately confirming that capacitance loss occurring at low temperatures is not a problem for various characteristics of the capacitors used. (5) GND voltage Make the potential of a GND pin such that it will be the lowest potential even if operating below that. In addition, confirm that there are no pins for which the potential becomes less than a GND by actually including transition phenomena. (6) Shorts between pins and misinstallation When installing in the set board, pay adequate attention to orientation and placement discrepancies of the IC. If it is installed erroneously, there is a risk of IC damage. There also is a risk of damage if it is shorted by a foreign substance getting between pins , between a pin and a power supply or GND. (7) Operation in strong magnetic fields Be careful when using the IC in a strong magnetic field, since it may malfunction. (8) Inspection in set board When inspecting the IC in the set board, since there is a risk of stress to the IC when capacitors are connected to low impedance IC pins, be sure to discharge for each process. Moreover, when getting it on and off of a jig in the inspection process, always connect it after turning off the power supply, perform the inspection, and remove it after turning off the power supply. Furthermore, as countermeasures against static electricity, use grounding in the assembly process and take appropriate care in transport and storage. (9) Input pins Parasitic elements inevitably are formed on an IC structure due to potential relationships. Because parasitic elements operate, they give rise to interference with circuit operation and may be the cause of malfunctions as well as damage. Accordingly, take care not to apply a lower voltage than GND to an input pin or use the IC in other ways such that parasitic elements operate. Moreover, do not apply a voltage to an input pin when the power supply voltage is not being applied to the IC. Furthermore, when the power supply voltage is being applied, make each input pin a voltage less than the power supply voltage as well as within the guaranteed values of electrical characteristics. (10) Ground wiring pattern When there is a small signal GND and a large current GND, it is recommended that you separate the large current GND pattern and small signal GND pattern and provide single point grounding at the reference point of the set so that voltage variation due to resistance components of the pattern wiring and large currents do not cause the small signal GND voltage to change. Take care that the GND wiring pattern of externally attached components also does not change. (11) Externally attached capacitors When using ceramic capacitors for externally attached capacitors, determine constants upon taking into account a lowering of the rated capacitance due to DC bias and capacitance change due to factors such as temperature. (12) Thermal shutdown circuit (TSD) When the junction temperature becomes 180℃ (typ) or higher, the thermal shutdown circuit operates and turns the switch OFF. The thermal shutdown circuit, which is aimed at isolating the IC from thermal runaway as much as possible, is not aimed at the protection or guarantee of the IC. Therefore, do not continuously use the IC with this circuit operating or use the IC assuming its operation. (13) Thermal design Perform thermal design in which there are adequate margins by taking into account the permissible dissipation (Pd) in actual states of use. www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. 12/13 2012.01 - Rev.C Technical Note BD7003NUX,BD7004NUX ●Ordering part number B D 7 Part No. 0 0 3 N Part No. 7003 7004 U X Package NUX: VSON008X2020 - E 2 Packaging and forming specification E2: Embossed tape and reel VSON008X2020 <Tape and Reel information> 2.0±0.05 2.0±0.05 0.6MAX 1.5±0.1 0.5±0.1 1 4 8 5 4000pcs E2 The direction is the 1pin of product is at the upper left when you hold ( reel on the left hand and you pull out the tape on the right hand ) +0.03 0.02 −0.02 0.8±0.1 (0.12) S 0.3±0.1 C0.25 Embossed carrier tape Quantity Direction of feed 1PIN MARK 0.05 S Tape +0.05 0.25 −0.04 1.5±0.1 www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. 1pin (Unit : mm) Reel 13/13 Direction of feed ∗ Order quantity needs to be multiple of the minimum quantity. 2012.01 - Rev.C 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 © 2012 ROHM Co., Ltd. All rights reserved. R1120A