Middle Power Class-D Speaker Amplifiers Analog Input / BTL Output Class-D Speaker Amplifier BD5423MUV No.10075EBT03 ●Description BD5423MUV is a 17W + 17W stereo class-D power amplifier IC, developed for space-saving and low heat-generation applications such as low-profile TV sets. The IC employs state-of-the-art Bipolar, CMOS, and DMOS (BCD) process technology that eliminates turn-on resistance in the output power stage and internal loss due to line resistances up to an ultimate level. With this technology, the IC has achieved high efficiency of 90% (10W + 10W output with 8Ω load), which is the top class in the industry. The IC, in addition, employs a compact back-surface heat radiation type power package to achieve low power consumption and low heat generation and eliminates necessity of installing an external radiator, up to a total output of 34W. This product satisfies both needs for drastic downsizing, low-profile structures and powerful, high-quality playback of the sound system. ●Features 1) A high efficiency of 90% (10W + 10W output with 8Ω load), which is the highest grade in the industry and low heat-generation. 2) An output of 17W + 17W (12V, with 4Ω load) is allowed without an external heat radiator. 3) Driving a lowest rating load of 4Ω is allowed. 4) Pop noise upon turning power on/off and power interruption has been reduced. 5) High-quality audio muting is implemented by soft-switching technology. 6) An output power limiter function limits excessive output to speakers. 7) High-reliability design provided with built-in protection circuits against high temperatures, against VCC shorting and GND shorting, against reduced-voltage, and against applying DC voltage to speaker. 8) A master/slave function allowing synchronization of multiple devices reduces beat noises. 9) Adjustment of internal PWM sampling clock frequencies (250kHz to 400kHz) allows easy protective measures against unwanted radio emission to AM radio band. 10) A compact back-surface heat radiation type power package is employed. VQFN048V7070 7.0mm × 7.0mm × 1.0mm, pitch 0.5mm ●Absolute maximum ratings A circuit must be designed and evaluated not to exceed absolute maximum rating in any cases and even momentarily, to prevent reduction in functional performances and thermal destruction of a semiconductor product and secure useful life and reliability. The following values assume Ta =25℃. For latest values, refer to delivery specifications. Symbol Ratings Unit VCC +20 V Power dissipation Pd 3.28 4.8 W W Pin 2, 14, 15, 22, 23, 38, 39, 46, 47 (Note 1, 2) (Note 3) (Note 4) Input voltage for signal pin VIN -0.2 ～ +7.2 V Pin 6, 7 (Note 1) Input voltage for control pin VCONT -0.2 ～ Vcc+0.2 V Pin 28, 32 (Note 1) Input voltage for clock pin VOSC -0.2 ～ +7.2 V Pin 31 (Note 1) Operating temperature range Topr -40 ～ +85 ℃ Storage temperature range Tstg -55 ～ +150 ℃ Tjmax +150 ℃ Parameter Supply voltage Maximum junction temperature Conditions (Note 1) A voltage that can be applied with reference to GND (pins 5, 18, 19, 42, and 43) (Note 2) Pd and Tjmax=150℃ must not be exceeded. (Note 3) 114.3mm × 76.2mm × 1.6mm FR4 2-layer glass epoxy board (Copper Area 5505mm2) installed. If used under Ta=25℃ or higher, reduce 26.2mW for increase of every 1℃. The board is provided with thermal via. (Note 4) 114.3mm × 76.2mm × 1.6mm FR4 4-layer glass epoxy board (Copper Area 5505mm2) installed. If used under Ta=25℃ or higher, reduce 38.4mW for increase of every 1℃. The board is provided with thermal via. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 1/16 2010.05 - Rev.B Technical Note BD5423MUV ●Operating conditions The following values assume Ta =25℃. Check for latest values in delivery specifications. Symbol Ratings Unit Supply voltage VCC +10～+16.5 V Pin 2, 14, 15, 22, 23, 38, 39, 46, 47 Load resistance RL 4 ～ 16 Ω (Note 5) Parameter Conditions (Note 5) Pd should not be exceeded. ●Electrical characteristics Except otherwise specified Ta = 25℃, VCC = 12V, fIN = 1kHz, Rg = 0Ω, RL = 8Ω, MUTEX="H", MS="L" For latest values, refer to delivery specifications. Symbol Limits Unit Circuit current 1 (Sampling mode) ICC1 25 mA With no signal Circuit current 2 (Muting mode) ICC2 10 mA MUTEX = “L” “H” level input voltage VIH 2.3～12 V MUTEX, MS “L” level input voltage VIL 0～0.8 V MUTEX, MS Voltage gain GV 28 dB PO = 1W Maximum output power 1 (Note 6) PO1 10 W THD+N = 10%, RL = 8Ω Maximum output power 2 (Note 6) PO2 17 W THD+N = 10%, RL = 4Ω Total harmonic distortion (Note 6) THD 0.1 % PO = 1W, BW=20Hz～20kHz CT 85 dB PO = 1W, Rg = 0Ω, BW = IHF-A VNO 80 µVrms Rg = 0Ω, BW = IHF-A VNOM 1 µVrms Rg = 0Ω, BW = IHF-A, MUTEX = “L” FOSC 250 kHz Parameter Conditions Whole circuit Control circuit Audio circuit Crosstalk Output noise voltage (Sampling mode) Residual noise voltage (Muting mode) Internal sampling clock frequency MS = “L” (In master operation) (Note 6) The rated values of items above indicate average performances of the device, which largely depend on circuit layouts, components, and power supplies. The reference values are those applicable to the device and components directly installed on a board specified by us. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 2/16 2010.05 - Rev.B Technical Note BD5423MUV ●Electrical characteristic curves (Reference data) (1) Under Stereo Operation(RL=8Ω) 100 100 Vcc=12V RL=8Ω BW=20～20kHz 10 THD+N (%) THD+N (%) 10 6kHz 1 0.1 Vcc=12V RL=8Ω Po=1W BW=20～20kHz 1 0.1 1kHz 100Hz 0.01 0.01 0.001 0.01 0.1 1 10 10 100 100 1000 Fig. 1 THD+N － Output power Fig. 2 THD+N － Frequency 0 40 Vcc=12V RL=8Ω Po=1W BW=20～20kHz 35 -20 30 25 CROSSTALK (dB) VOLTAGE GAIN (dB) 100000 FREQUENCY (Hz) OUTPUT POWER (W) Vcc=12V RL=8Ω Po=1W L=33µH C=0.47µF Cｇ=0.1µF 20 15 10 5 -40 -60 -80 0 -100 10 100 1000 10000 100000 10 100 FREQUENCY (Hz) 10000 100000 Fig. 4 Crosstalk - Frequency RL=8Ω fin=1kHz THD=10% 20 0 OUTPUT POWER (W) Vcc=12V RL=8Ω fin=1kHz BW=20～20kHz -20 -40 -60 -80 -100 0.001 1000 FREQUENCY (Hz) Fig. 3 Voltage gain - Frequency CROSSTALK (dB) 10000 15 10 THD=1% 5 0 0.01 0.1 1 10 8 100 12 14 16 18 VCC (V) OUTPUT POWER (W) Fig. 5 Crosstalk - Output power Fig. 6 Output power - Power supply voltage www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 10 3/16 2010.05 - Rev.B Technical Note BD5423MUV 100 90 80 70 60 50 40 30 20 10 0 Vcc=10V RL=8Ω fin=1kHz 0 5 10 15 100 90 80 70 60 50 40 30 20 10 0 EFFICIENCY (%) EFFICIENCY (%) ●Electrical characteristic curves (Reference data) – Continued 20 Vcc=12V R L=8Ω fin=1kHz 0 OUTPUT POWER (W/ch) 5 Fig. 8 Efficiency - Output power Vcc=16.5V Vcc=12V 2 Vcc=10V ICC (A) EFFICIENCY (%) 20 3 100 90 80 70 60 50 40 30 20 10 0 1 Vcc=16.5V RL=8Ω fin=1kHz RL=8Ω fin=1kHz 0 0 5 10 15 20 0 5 OUTPUT POWER (W/ch) 10 15 20 25 30 35 40 TOTAL OUTPUT POWER (W) Fig. 9 Efficiency - Output power Fig. 10 Current consumption - Output power 0 R L=8Ω 無信号時 Without signal Vcc=12V RL=8Ω Without signal 無信号時 BW=20～20kHz -20 NOISE FFT (dBV) ICC (mA) 15 OUTPUT POWER (W/ch) Fig. 7 Efficiency - Output power 100 90 80 70 60 50 40 30 20 10 0 10 Sampling -40 -60 -80 -100 -120 Mute -140 8 10 12 14 16 10 18 1000 10000 100000 FREQUENCY (Hz) VCC (V) Fig. 11 Current consumption - Power supply voltage www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 100 4/16 Fig. 12 FFT of Output Noise Voltage 2010.05 - Rev.B Technical Note BD5423MUV ●Electrical characteristic curves (Reference data) – Continued MUTEX Pin 28 10V/div TM Pin 34 5V/div Speaker output Vcc=12V RL =8 Ω Po=500m W fin=500Hz MUTEX Pin 28 10V/div TM Pin 34 5V/div 2V/div Vcc=12V RL =8 Ω Po=500mW fin=500Hz 2V/div Speaker output 10msec/div 10msec/div Fig. 13 Wave form when Releasing Soft-mute Fig. 14 Wave form when Activating Soft-mute Fig. 15 Wave form on Instantaneous Power Interruption (20msec / div) Fig. 16 Wave form on Instantaneous Power Interruption (2msec / div) Fig. 17 Wave form on Output Power Limiter function (Po = 5W) www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 5/16 2010.05 - Rev.B Technical Note BD5423MUV ●Electrical characteristic curves (Reference data) – Continued (2) Under Stereo Operation(RL=6Ω) OUTPUT POWER (W) 25 RL=6Ω fin=1kHz 20 THD=10% 15 10 5 0 8 10 12 14 16 18 VCC (V) 100 90 80 70 60 50 40 30 20 10 0 EFFICIENCY (%) EFFICIENCY (%) Fig. 18 Output power - Power supply voltage Vcc=10V RL=6Ω fin=1kHz 0 5 10 15 20 100 90 80 70 60 50 40 30 20 10 0 25 Vcc=12V RL=6Ω fin=1kHz 0 5 OUTPUT POWER (W/ch) Efficiency - Output power 100 90 80 70 60 50 40 30 20 10 0 Fig. 20 15 20 25 Efficiency - Output power 4 Vcc=16.5V 3 ICC (A) EFFICIENCY (%) Fig. 19 10 OUTPUT POWER (W/ch) Vcc=16.5V RL=6Ω fin=1kHz Vcc=12V Vcc=10V 2 1 RL=6Ω fin=1kHz 0 0 5 10 15 20 0 25 10 15 20 25 30 35 40 45 50 TOTAL OUTPUT POWER (W) OUTPUT POWER (W/ch) Fig. 21 5 Efficiency - Output power Fig. 22 Current consumption - Output power Dotted lines of the graphs indicate continuous output power to be obtained on musical signal source or by installing additional heat sinks. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 6/16 2010.05 - Rev.B Technical Note BD5423MUV ●Electrical characteristic curves (Reference data) – Continued (3) Under Stereo Operation(RL=4Ω) OUTPUT POWER (W) 30 R L=4Ω fin=1kHz 25 THD=10% 20 15 10 5 0 8 10 12 14 16 18 VCC (V) 100 90 80 70 60 50 40 30 20 10 0 EFFICIENCY (%) EFFICIENCY (%) Fig. 23 Output power - Power supply voltage Vcc=10V RL=4Ω fin=1kHz 0 5 10 15 20 100 90 80 70 60 50 40 30 20 10 0 Vcc=12V RL=4Ω fin=1kHz 0 5 OUTPUT POWER (W/ch) 15 20 OUTPUT POWER (W/ch) Efficiency - Output power Fig. 25 Efficiency - Output power 4 100 90 80 70 60 50 40 30 20 10 0 Vcc=10V 3 ICC (A) EFFICIENCY (%) Fig. 24 10 Vcc=12V 2 Vcc=16.5V 1 Vcc=16.5V R L=4Ω fin=1kHz R L=4Ω fin=1kHz 0 0 5 10 15 20 0 OUTPUT POWER (W/ch) Fig. 26 5 10 15 20 25 30 35 40 TOTAL OUTPUT POWER (W) Efficiency - Output power Fig. 27 Current consumption - Output power Dotted lines of the graphs indicate continuous output power to be obtained on musical signal source or by installing additional heat sinks. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 7/16 2010.05 - Rev.B Technical Note BD5423MUV ●Pin Assignment PLMT2 PLMT1 IN1 IN2 GNDA FILA FILP VCCA BSP2P 10 9 8 7 6 5 4 3 2 1 FILA Power Limit N.C. 13 N.C. VCCA PLMT3 11 FILP PLMT4 12 GNDA BSP1P Top View N.C. 48 N.C. VCCP1P 14 47 VCCP2P VCCP1P 15 46 VCCP2P PWM1 PWM2 OUT1P 16 DRIVER 1P OUT1P 17 45 OUT2P DRIVER 2P 44 OUT2P GNDP1 18 43 GNDP2 GNDP1 19 42 GNDP2 OUT1N 20 DRIVER 1N OUT1N 21 40 OUT2N Under Voltage Protection High Temperature Protection VCCP1N 22 39 VCCP2N Output Short Protection Output DC Voltage Protection Ramp Generator SOFT MUTE Power-Off Detector 30 31 32 33 34 35 36 OSC MS ROSC TM VHOLD BSP2N Mute Control Clock Control 29 ERROR 28 N.C. WARNING 27 N.C. 26 MUTEX 25 BSP1N 24 N.C. 38 VCCP2N ERROR WARNING VCCP1N 23 N.C. 41 OUT2N DRIVER 2N Protections & Logic N.C. 37 N.C. N.C. N.C. Fig. 28 Pin Assignment Diagram ●Outer Dimensions and Inscriptions Type BD5423 Lot No. Fig. 29 Outer Dimensions and Inscriptions of VQFN048V7070 Package www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 8/16 2010.05 - Rev.B Technical Note BD5423MUV ●Explanation of Pin Functions (Provided pin voltages are typical values.) No. Symbol Pin voltage 2 VCCA Vcc 3 FILP Vcc+35 12 Pin description Internal equalizing circuit Analog system power pin PWM system bias pin Connect a capacitor. Analog signal system bias pin 4 FILA 3.5V Connect a capacitor. 5 GNDA 6 7 IN2 IN1 0V 3.5V Analog system GND pin ch2 Analog signal input pin ch1 Analog signal input pin Input audio signal via a capacitor. 8 PLMT1 3.5V Voltage-to-current conversion pin for output power limiter function Connect a register. 9 PLMT2 - Current-to-voltage conversion pin for output power limiter function Connect a register. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 9/16 2010.05 - Rev.B Technical Note BD5423MUV ●Explanation of Pin Functions - Continued No. 10 Symbol PLMT3 Pin voltage - Pin description Internal equalizing circuit Current-to-voltage conversion pin for output power limiter function Connect a register. Bias pin for output power limiter function 11 PLMT4 3.5V Connect a register and a capacitor. 12 BSP1P - 14, 15 VCCP1P Vcc 16, 17 OUT1P Vcc～0V 18, 19 GNDP1 0V 20, 21 OUT1N Vcc～0V 22, 23 VCCP1N Vcc 25 BSP1N - ch1 positive bootstrap pin Connect a capacitor. ch1 positive power system power supply pin ch1 positive PWM signal output pin Connect with output LPF. ch1 power system GND pin ch1 negative PWM signal output pin Connect with output LPF. ch1 negative power system power supply pin ch1 negative bootstrap pin Connect a capacitor www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 10/16 2010.05 - Rev.B Technical Note BD5423MUV ●Explanation of Pin Functions - Continued No. Symbol Pin voltage Pin description Internal equalizing circuit Warning output pin 26 WARNING H: 5V L: 0V Pin to notify operation warning. H: Under warning L: Normal operation Connect a resister. Error output pin 27 ERROR H: 5V L: 0V A pin for notifying operation errors. H: Error L: Normal operation Connect a resister. Audio mute control pin 28 13, 24 29, 30 37,48 MUTEX N.C. - - H: Mute off L: Mute on N.C. pin Nothing is connected with IC internal circuit. Sampling clock signal input/output pin 31 OSC - When using two or more sampling clocks, connect via a capacitor. Master/Slave switching pin 32 MS - Switching of master/slave functions on a sampling clock signal. H: Slave operation L: Master operation www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 11/16 2010.05 - Rev.B Technical Note BD5423MUV ●Explanation of Pin Functions - Continued No. Symbol Pin voltage 33 ROSC 5.6V 34 TM 0～5V Pin description Internal equalizing circuit Internal PWM sampling clock frequency setting pin Usually the pin is used open. To adjust an internal sampling clock frequency, connect a resister. Audio muting constant setting pin Connect a capacitor. Instantaneous power interruption detecting voltage setting pin 35 VHOLD 0.68×Vcc 36 BSP2N - 38, 39 VCCP2N Vcc 40, 41 OUT2N Vcc～0V 42, 43 GNDP2 0V 44, 45 OUT2P Vcc～0V 46, 47 VCCP2P Vcc 1 BSP2P - Connect a capacitor. To adjust a detecting voltage, connect a resister. ch2 negative bootstrap pin Connect a capacitor. ch2 negative power system power supply pin ch2 negative PWM signal output pin Connect an output LPF. cch2 power system GND pin ch2 positive PWM signal output pin Connect an output LPF. ch2 positive power system power supply pin ch2 positive bootstrap pin Connect a capacitor. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 12/16 2010.05 - Rev.B Technical Note BD5423MUV ●Application Circuit Diagram (under stereo operation) C2 10μF VCCP1 + C3 1μF N.C. 13 N.C. 4 3 2 1 VCCA 5 0.1μF C5 6 Power Limit C12 0.68μF VCCA GNDA SP INPUT 2ch SP INPUT 1ch 7 FILP 8 C4 10μF 9 2.2μF R8 22kΩ 10 FILA 11 GNDA 12 C7 2.2μF R9 22kΩ R10 22kΩ C6 C11 0.1μF GNDA GNDA ・Vcc=10V～16.5V N.C. 48 N.C. 14 16 DRIVER 1P 17 43 19 42 20 21 Protections & Logic 39 Output Short Protection Output DC Voltage Protection SOFT MUTE C38 0.1μF Power-Off Detector 33 34 35 C41 1μF GNDP2 SP 2ch (4Ω) 15μH L40 C36 0.68μF N.C. 37 N.C. 31 32 36 3.3μF C35 30 0.1μF 29 GNDD 27 C40 0.22μF 38 OPEN 26 C44 0.22μF + C39 10μF N.C. N.C. 28 N.C. 25 Mute Control N.C. 24 N.C. ERROR WARNING 23 WARNING OUTPUT R26 GNDD 100kΩ ERROR OUTPUT R27 GNDD 100kΩ MUTESPX C25 0.68μF 40 Under Voltage Protection High Temperature Protection 22 L44 15μH 41 DRIVER 2N C34 C22 0.1μF DRIVER 1N Ramp Generator 15μH L20 44 18 Clock Control C20 0.22μF C46 0.1μF 45 DRIVER 2P 0.1μF C16 0.22μF 46 PWM1 PWM2 MASTER SLAVE GNDP1 15 N.C. SP 1ch (4Ω) C14 0.1μF C31 C17 1μF L16 15μH VCCP2 47 CAREER I/O C15 10μF + C1 0.68μF Fig. 30 Circuit Diagram of Stereo Operation with 4Ω Load www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 13/16 2010.05 - Rev.B Technical Note BD5423MUV Table 1 BOM List of Stereo Operation with 4Ω Load Configuration Value Rated voltage Tolerance - - - - 1 IC1 0805 0.68µF 25V ±10% ±10% 4 C1, C12, C25, C36 1608 0603 0.1µF 50V ±10% ±15% 5 C5, C14, C22, C38, C46 MURATA 3216 1206 0.22µF 50V ±10% ±10% 4 C16, C20, C40, C44 25ST225M3216 Rubycon 3225 1210 2.2µF 25V ±20% ±5% 2 C6, C7 C 50ST105M3225 Rubycon 3225 1210 1µF 50V ±20% ±5% 2 C17, C41 7 C GRM21BB31E335KA75 MURATA 2012 0805 3.3µF 25V ±10% ±10% 1 C35 8 C GRM188B11E104KA01 MURATA 1608 0603 0.1µF 25V ±10% ±10% 3 C11, C31, C34 9 C GRM21BB11C105KA01 MURATA 2012 0805 1µF 16V ±10% ±10% 1 C3 10 C GRM21BB31C106KE15 MURATA 2012 0805 10µF 16V ±10% ±10% 1 C4 11 C 25SVPD10M SANYO 6666 2626 10µF 25V ±20% ±25% 3 C2, C15, C39 12 R MCR01MZPF2202 ROHM 1005 0402 22kΩ 50V ±1% ±200ppm/℃ 3 R8, R9, R10 13 R MCR01MZPF1003 ROHM 1005 0402 100kΩ 50V ±1% ±200ppm/℃ 2 R26, R27 No. Item Part Number Vendor Value Tolerance DC Resistance Rated DC Current Quantity Reference 14 L 7G09B-150M SAGAMI 15µH×2 ±20% 44mΩmax. 4.1A max. 2 L16, L20, L40, L44 No. Item Part Number Vendor 1 IC BD5423MUV ROHM 2 C GRM219B31E684KA88 MURATA 2012 3 C GRM188R11H104KA93 MURATA 4 C GRM31MB11H224KA01 5 C 6 mm inch VQFN048V7070 Configuration mm 10×9×10 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 14/16 Temperature Quantity characteristics Reference 2010.05 - Rev.B Technical Note BD5423MUV ●Notes for use Notes for use 1. About absolute maximum ratings If an applied voltage or an operating temperature exceeds an absolute maximum rating, it may cause destruction of a device. A result of destruction, whether it is short mode or open mode, is not predictable. Therefore, provide a physical safety measure such as fuse, against a special mode that may violate conditions of absolute maximum ratings. 2. About power supply line As return of current regenerated by back EMF of output coil happens, take steps such as putting capacitor between power supply and GND as a electric pathway for the regenerated current. Be sure that there is no problem with each property such as emptied capacity at lower temperature regarding electrolytic capacitor to decide capacity value. If the connected power supply does not have sufficient current absorption capacity, regenerative current will cause the voltage on the power supply line to rise, which combined with the product and its peripheral circuitry may exceed the absolute maximum ratings. It is recommended to implement a physical safety measure such as the insertion of a voltage clamp diode between the power supply and GND pins. 3. Potential of GND (5, 18, 39, 42, and 43 pins) Potential of the GND terminal must be the lowest under any operating conditions. 4. About thermal design Perform thermal design with sufficient margins, in consideration of maximum power dissipation Pd under actual operating conditions. This product has an exposed frame on the back of the package, and it is assumed that the frame is used with measures to improve efficiency of heat dissipation. In addition to front surface of board, provide a heat dissipation pattern as widely as possible on the back also. A class-D power amplifier has heat dissipation efficiency far higher than that of conventional analog power amplifier and generates less heat. However, extra attention must be paid in thermal design so that a power dissipation Pdiss should not exceed the maximum power dissipation Pd. T jmax - Ta Tjmax: Maximum temperature junction = 150[℃] Pd 〔W〕 Maximum power dissipation θja Ta: Operating ambient temperature [℃] θja: Package thermal resistance [℃/W] 1 Po: Output power [W] diss O P P 1 〔W〕 Power dissipation η η: Efficiency 5. About operations in strong electric field Note that the device may malfunction in a strong electric field. 6. Thermal shutdown (TSD) circuit This product is provided with a built-in thermal shutdown circuit. When the thermal shutdown circuit operates, the output transistors are placed under open status. The thermal shutdown circuit is primarily intended to shut down the IC avoiding thermal runaway under abnormal conditions with a chip temperature exceeding Tjmax = 150℃, and is not intended to protect and secure an electrical appliance. Accordingly, do not use this circuit function to protect a customer's electrical appliance. 7. About shorting between pins and installation failure Be careful about direction and displacement of an LSI when installing it onto the board. Faulty installation may destroy the LSI when the device is energized. In addition, a foreign matter getting in between LSI pins, pins and power supply, and pins and GND may cause shorting and destruction of the LSI. 8. About power supply startup and shutdown When starting up a power supply, be sure to place the MUTEX pin (pin 28) at “L” level. When shutting down a power supply also, be sure to place the pin at “L” level. Those processes reduce pop noises generated upon turning on and off the power supply. In addition, all power supply pins must be started up and shut down at the same time. 9. About WARNING output pin (pin 26) and ERROR output pin (pin 27) A WARNING flag is output from the WARNING output pin upon operation of the high-temperature protection function and under-voltage protection function. And an ERROR flag is output from the ERROR output pin upon operation of VCC/GND shorting protection function and speaker DC voltage applying protection function. These flags are the function which the condition of this product is shown in. The use which aimed at the protection except for this product is prohibition. 10. About N.C. pins (pins 13, 24, 29, 30, 37, and48) The N.C. (Non connection) pins are not connected with an internal circuit. Leave the pins open or connect them to GND. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 15/16 2010.05 - Rev.B Technical Note BD5423MUV ●Ordering part number B D 5 Part No BD. 4 2 3 Part No. 5423 M U - V Package MUV: VQFN048V7070 E 2 Packaging and forming specification E2: Embossed tape and reel VQFN048V7070 <Tape and Reel information> 7.0±0.1 7.0 ± 0.1 1.0MAX 4.7 ± 0.1 1 12 1500pcs E2 The direction is the 1pin of product is at the upper left when you hold ) (0.22) ( reel on the left hand and you pull out the tape on the right hand 13 4.7±0.1 0.4±0.1 48 +0.03 0.02 -0.02 S C0.2 Embossed carrier tape Quantity Direction of feed 1PIN MARK 0.08 S Tape 37 24 36 0.75 0.5 25 +0.05 0.25 -0.04 1pin (Unit : mm) Reel www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 16/16 Direction of feed ∗ Order quantity needs to be multiple of the minimum quantity. 2010.05 - Rev.B Datasheet Notice Precaution on using ROHM Products 1. Our Products are designed and manufactured for application in ordinary electronic equipments (such as AV equipment, OA equipment, telecommunication equipment, home electronic appliances, amusement equipment, etc.). If you (Note 1) , transport intend to use our Products in devices requiring extremely high reliability (such as medical equipment equipment, traffic equipment, aircraft/spacecraft, nuclear power controllers, fuel controllers, car equipment including car accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or serious damage to property (“Specific Applications”), please consult with the ROHM sales representative in advance. Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of any ROHM’s Products for Specific Applications. (Note1) Medical Equipment Classification of the Specific Applications JAPAN USA EU CHINA CLASSⅢ CLASSⅡb CLASSⅢ CLASSⅢ CLASSⅣ CLASSⅢ 2. ROHM designs and manufactures its Products subject to strict quality control system. However, semiconductor products can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate safety measures including but not limited to fail-safe design against the physical injury, damage to any property, which a failure or malfunction of our Products may cause. The following are examples of safety measures: [a] Installation of protection circuits or other protective devices to improve system safety [b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure 3. Our Products are designed and manufactured for use under standard conditions and not under any special or extraordinary environments or conditions, as exemplified below. Accordingly, ROHM shall not be in any way responsible or liable for any damages, expenses or losses arising from the use of any ROHM’s Products under any special or extraordinary environments or conditions. If you intend to use our Products under any special or extraordinary environments or conditions (as exemplified below), your independent verification and confirmation of product performance, reliability, etc, prior to use, must be necessary: [a] Use of our Products in any types of liquid, including water, oils, chemicals, and organic solvents [b] Use of our Products outdoors or in places where the Products are exposed to direct sunlight or dust [c] Use of our Products in places where the Products are exposed to sea wind or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2 [d] Use of our Products in places where the Products are exposed to static electricity or electromagnetic waves [e] Use of our Products in proximity to heat-producing components, plastic cords, or other flammable items [f] Sealing or coating our Products with resin or other coating materials [g] Use of our Products without cleaning residue of flux (even if you use no-clean type fluxes, cleaning residue of flux is recommended); or Washing our Products by using water or water-soluble cleaning agents for cleaning residue after soldering [h] Use of the Products in places subject to dew condensation 4. The Products are not subject to radiation-proof design. 5. Please verify and confirm characteristics of the final or mounted products in using the Products. 6. In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse. is applied, confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect product performance and reliability. 7. De-rate Power Dissipation (Pd) depending on Ambient temperature (Ta). When used in sealed area, confirm the actual ambient temperature. 8. Confirm that operation temperature is within the specified range described in the product specification. 9. ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined in this document. Precaution for Mounting / Circuit board design 1. When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product performance and reliability. 2. In principle, the reflow soldering method must be used; if flow soldering method is preferred, please consult with the ROHM representative in advance. For details, please refer to ROHM Mounting specification Notice - GE © 2014 ROHM Co., Ltd. All rights reserved. Rev.002 Datasheet Precautions Regarding Application Examples and External Circuits 1. If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the characteristics of the Products and external components, including transient characteristics, as well as static characteristics. 2. You agree that application notes, reference designs, and associated data and information contained in this document are presented only as guidance for Products use. Therefore, in case you use such information, you are solely responsible for it and you must exercise your own independent verification and judgment in the use of such information contained in this document. ROHM shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of such information. Precaution for Electrostatic This Product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. Please take proper caution in your manufacturing process and storage so that voltage exceeding the Products maximum rating will not be applied to Products. Please take special care under dry condition (e.g. Grounding of human body / equipment / solder iron, isolation from charged objects, setting of Ionizer, friction prevention and temperature / humidity control). Precaution for Storage / Transportation 1. Product performance and soldered connections may deteriorate if the Products are stored in the places where: [a] the Products are exposed to sea winds or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2 [b] the temperature or humidity exceeds those recommended by ROHM [c] the Products are exposed to direct sunshine or condensation [d] the Products are exposed to high Electrostatic 2. Even under ROHM recommended storage condition, solderability of products out of recommended storage time period may be degraded. It is strongly recommended to confirm solderability before using Products of which storage time is exceeding the recommended storage time period. 3. Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent leads may occur due to excessive stress applied when dropping of a carton. 4. Use Products within the specified time after opening a humidity barrier bag. Baking is required before using Products of which storage time is exceeding the recommended storage time period. Precaution for Product Label QR code printed on ROHM Products label is for ROHM’s internal use only. Precaution for Disposition When disposing Products please dispose them properly using an authorized industry waste company. Precaution for Foreign Exchange and Foreign Trade act Since our Products might fall under controlled goods prescribed by the applicable foreign exchange and foreign trade act, please consult with ROHM representative in case of export. Precaution Regarding Intellectual Property Rights 1. All information and data including but not limited to application example contained in this document is for reference only. ROHM does not warrant that foregoing information or data will not infringe any intellectual property rights or any other rights of any third party regarding such information or data. ROHM shall not be in any way responsible or liable for infringement of any intellectual property rights or other damages arising from use of such information or data.: 2. No license, expressly or implied, is granted hereby under any intellectual property rights or other rights of ROHM or any third parties with respect to the information contained in this document. Other Precaution 1. This document may not be reprinted or reproduced, in whole or in part, without prior written consent of ROHM. 2. The Products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written consent of ROHM. 3. In no event shall you use in any way whatsoever the Products and the related technical information contained in the Products or this document for any military purposes, including but not limited to, the development of mass-destruction weapons. 4. The proper names of companies or products described in this document are trademarks or registered trademarks of ROHM, its affiliated companies or third parties. Notice - GE © 2014 ROHM Co., Ltd. All rights reserved. Rev.002 Datasheet General Precaution 1. Before you use our Pro ducts, you are requested to care fully read this document and fully understand its contents. ROHM shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny ROHM’s Products against warning, caution or note contained in this document. 2. All information contained in this docume nt is current as of the issuing date and subj ect to change without any prior notice. Before purchasing or using ROHM’s Products, please confirm the la test information with a ROHM sale s representative. 3. The information contained in this doc ument is provi ded on an “as is” basis and ROHM does not warrant that all information contained in this document is accurate an d/or error-free. ROHM shall not be in an y way responsible or liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or concerning such information. Notice – WE © 2014 ROHM Co., Ltd. All rights reserved. Rev.001