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 Fig. 5 Crosstalk - Output power www.rohm.com 12 14 16 18 VCC (V) OUTPUT POWER (W) © 2010 ROHM Co., Ltd. All rights reserved. 10 Fig. 6 Output power - Power supply voltage 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 Fig. 11 Current consumption - Power supply voltage www.rohm.com 1000 10000 100000 FREQUENCY (Hz) VCC (V) © 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 2V/div MUTEX Pin 28 10V/div TM Pin 34 5V/div Speaker output 10msec/div Vcc=12V RL =8 Ω Po=500mW fin=500Hz 2V/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 - www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 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 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 - www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. Switching of master/slave functions on a sampling clock signal. H: Slave operation L: Master operation 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 - www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 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. 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 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. mm inch VQFN048V7070 Configuration mm 10×9×10 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) www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. Reel 16/16 Direction of feed ∗ Order quantity needs to be multiple of the minimum quantity. 2010.05 - Rev.B 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 © 2010 ROHM Co., Ltd. All rights reserved. R1010A