BD5423MUV-E2

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. Parameter Supply voltage Power dissipation Input voltage for signal pin Input voltage for control pin Input voltage for clock pin Operating temperature range Storage temperature range Maximum junction temperature Symbol VCC Pd VIN VCONT VOSC Topr Tstg Tjmax Ratings +20 3.28 4.8 -0.2 ～ +7.2 -0.2 ～ Vcc+0.2 -0.2 ～ +7.2 -40 ～ +85 -55 ～ +150 +150 Unit V W W V V V ℃ ℃ ℃ Conditions Pin 2, 14, 15, 22, 23, 38, 39, 46, 47 (Note 1, 2) (Note 3) (Note 4) Pin 6, 7 (Note 1) Pin 28, 32 (Note 1) Pin 31 (Note 1) (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 BD5423MUV ●Operating conditions The following values assume Ta =25℃. Check for latest values in delivery specifications. Parameter Supply voltage Load resistance (Note 5) Pd should not be exceeded. Technical Note Symbol VCC RL Ratings +10～+16.5 4 ～ 16 Unit V Ω Conditions Pin 2, 14, 15, 22, 23, 38, 39, 46, 47 (Note 5) ●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. Parameter Whole circuit Circuit current 1 (Sampling mode) Circuit current 2 (Muting mode) Control circuit “H” level input voltage “L” level input voltage Audio circuit Voltage gain Maximum output power 1 (Note 6) Maximum output power 2 (Note 6) Total harmonic distortion (Note 6) Crosstalk Output noise voltage (Sampling mode) Residual noise voltage (Muting mode) Internal sampling clock frequency GV PO1 PO2 THD CT VNO VNOM FOSC 28 10 17 0.1 85 80 1 250 dB W W % dB µVrms µVrms kHz PO = 1W THD+N = 10%, RL = 8Ω THD+N = 10%, RL = 4Ω PO = 1W, BW=20Hz～20kHz PO = 1W, Rg = 0Ω, BW = IHF-A Rg = 0Ω, BW = IHF-A Rg = 0Ω, BW = IHF-A, MUTEX = “L” MS = “L” (In master operation) VIH VIL 2.3～12 0～0.8 V V MUTEX, MS MUTEX, MS ICC1 ICC2 25 10 mA mA With no signal MUTEX = “L” Symbol Limits Unit Conditions (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 BD5423MUV ●Electrical characteristic curves (Reference data) (1) Under Stereo Operation(RL=8Ω) Technical Note 100 10 THD+N (%) 1 0.1 0 .01 0.001 0.01 0.1 1 10 100 OUTPUT POWER (W) Vcc=12V RL=8Ω BW=20～20kHz 6kHz 100 10 THD+N (%) 1 0.1 100Hz Vcc=12V RL=8Ω Po=1W BW=20～20kHz 1kHz 0.01 10 100 1000 10000 100000 FREQUENCY (Hz) Fig. 2 THD+N － Frequency Fig. 1 THD+N － Output power 40 35 VOLTAGE GAIN (dB) CROSSTALK (dB) 0 -20 Vcc=12V RL=8Ω Po=1W BW=20～20kHz 30 25 20 15 10 5 0 10 100 1000 FREQUENCY (Hz) 10000 100000 Vcc=12V RL=8Ω Po=1W L=33µH C=0.47µF Cｇ=0.1µF -40 -60 -80 -100 10 100 1000 10000 100000 FREQUENCY (Hz) Fig. 3 Voltage gain - Frequency Fig. 4 Crosstalk - Frequency 0 CROSSTALK (dB) -20 -40 -60 -80 -100 0.001 OUTPUT POWER (W) Vcc=12V RL=8Ω fin=1kHz BW=20～20kHz 20 15 10 5 0 RL=8Ω fin=1kHz THD=10% THD=1% 0.01 0.1 1 10 100 8 10 12 14 16 18 OUTPUT POWER (W) Fig. 5 Crosstalk - Output power VCC (V) Fig. 6 Output power - Power supply voltage www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 3/16 2010.05 - Rev.B BD5423MUV ●Electrical characteristic curves (Reference data) – Continued Technical Note 100 90 80 70 60 50 40 30 20 10 0 0 5 10 Vcc=10V RL=8Ω fin=1kHz 15 20 100 90 80 70 60 50 40 30 20 10 0 0 5 10 EFFICIENCY (%) EFFICIENCY (%) Vcc=12V R L=8Ω fin=1kHz OUTPUT POWER (W/ch) Fig. 7 Efficiency - Output power 15 20 OUTPUT POWER (W/ch) Fig. 8 Efficiency - Output power 100 90 80 70 60 50 40 30 20 10 0 0 5 10 3 Vcc=16.5V Vcc=12V 2 ICC (A) Vcc=10V 1 Vcc=16.5V RL=8Ω fin=1kHz RL=8Ω fin=1kHz EFFICIENCY (%) 0 15 20 0 5 10 15 20 25 30 35 40 OUTPUT POWER (W/ch) Fig. 9 Efficiency - Output power TOTAL OUTPUT POWER (W) Fig. 10 Current consumption - Output power 100 90 80 70 60 50 40 30 20 10 0 8 0 R L=8Ω 無信号時 Without signal -20 NOISE FFT (dBV) -40 -60 -80 -100 -120 -140 10 100 ICC (mA) Vcc=12V RL=8Ω Without signal 無信号時 BW=20～20kHz Sampling Mute 10 12 14 VCC (V) 16 18 1000 10000 100000 FREQUENCY (Hz) Fig. 12 FFT of Output Noise Voltage Fig. 11 Current consumption - Power supply voltage www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 4/16 2010.05 - Rev.B BD5423MUV ●Electrical characteristic curves (Reference data) – Continued Technical Note M UTEX Pin 28 10V/div TM Pin 34 5V/div Vcc=12V RL =8 Ω Po=500m W fin=500Hz MUTEX Pin 28 TM Pin 34 10V/div 5V/div Vcc=12V RL =8 Ω Po=500mW fin=500Hz Speaker output 2V/div 10msec/div Speaker output 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 BD5423MUV ●Electrical characteristic curves (Reference data) – Continued (2) Under Stereo Operation(RL=6Ω) Technical Note 25 OUTPUT POWER (W) 20 15 10 5 0 8 10 12 14 16 18 VCC (V) RL=6Ω fin=1kHz THD=10% Fig. 18 Output power - Power supply voltage 100 90 80 70 60 50 40 30 20 10 0 0 5 10 15 OUTPUT POWER (W/ch) Vcc=10V RL=6Ω fin=1kHz 20 25 100 90 80 70 60 50 40 30 20 10 0 0 5 10 15 OUTPUT POWER (W/ch) EFFICIENCY (%) EFFICIENCY (%) Vcc=12V RL=6Ω fin=1kHz 20 25 Fig. 19 Efficiency - Output power Fig. 20 Efficiency - Output power 100 90 80 70 60 50 40 30 20 10 0 0 5 10 15 4 3 ICC (A) Vcc=10V 2 1 0 Vcc=16.5V Vcc=12V EFFICIENCY (%) Vcc=16.5V RL=6Ω fin=1kHz RL=6Ω fin=1kHz 20 25 0 5 10 15 20 25 30 35 40 45 50 OUTPUT POWER (W/ch) TOTAL OUTPUT POWER (W) Fig. 21 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 BD5423MUV ●Electrical characteristic curves (Reference data) – Continued (3) Under Stereo Operation(RL=4Ω) Technical Note 30 OUTPUT POWER (W) 25 20 15 10 5 0 8 10 12 14 16 18 VCC (V) Fig. 23 Output power - Power supply voltage R L=4Ω fin=1kHz THD=10% 100 90 80 70 60 50 40 30 20 10 0 0 5 10 15 OUTPUT POWER (W/ch) Vcc=10V RL=4Ω fin=1kHz 20 100 90 80 70 60 50 40 30 20 10 0 0 5 Fig. 25 EFFICIENCY (%) EFFICIENCY (%) Vcc=12V RL=4Ω fin=1kHz 10 15 20 OUTPUT POWER (W/ch) Efficiency - Output power Fig. 24 Efficiency - Output power 100 90 80 70 60 50 40 30 20 10 0 0 5 10 4 3 ICC (A) 2 1 0 Vcc=10V Vcc=12V Vcc=16.5V R L=4Ω fin=1kHz EFFICIENCY (%) Vcc=16.5V R L=4Ω fin=1kHz 15 20 0 5 10 15 20 25 30 35 40 OUTPUT POWER (W/ch) Fig. 26 Efficiency - Output power TOTAL OUTPUT POWER (W) 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 BD5423MUV ●Pin Assignment Technical Note Top View PLMT4 PLMT3 PLMT2 PLMT1 BSP1P BSP2P 1 N.C. 48 N.C. GNDA 12 11 10 9 8 7 6 GNDA 5 FILA 4 FILP 3 VCCA Power Limit N.C. 13 N.C. VCCP1P 14 VCCP1P 15 OUT1P 16 OUT1P 17 GNDP1 18 GNDP1 19 OUT1N 20 OUT1N 21 VCCP1N 22 VCCP1N 23 WARNING ERROR DRIVER 1N DRIVER 1P VCCA 2 FILA FILP IN1 IN2 47 VCCP2P PWM1 PWM2 46 VCCP2P DRIVER 2P 45 OUT2P 44 OUT2P 43 GNDP2 42 GNDP2 Protections & Logic Under Voltage Protection High Temperature Protection Output Short Protection Output DC Voltage Protection Ramp Generator DRIVER 2N 41 OUT2N 40 OUT2N 39 VCCP2N 38 VCCP2N Power-Off Detector Clock Control Mute Control N.C. SOFT MUTE 24 N.C. N.C. 37 N.C. N.C. N.C. 25 BSP1N 26 WARNING 27 ERROR 28 MUTEX 29 N.C. 30 N.C. 31 OSC 32 MS 33 ROSC 34 TM 35 VHOLD 36 BSP2N 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 BD5423MUV ●Explanation of Pin Functions (Provided pin voltages are typical values.) No. 2 Symbol VCCA Pin voltage Vcc Pin description Analog system power pin Technical Note Internal equalizing circuit 3 FILP Vcc+35 12 PWM system bias pin Connect a capacitor. Analog signal system bias pin 4 FILA 3.5V Connect a capacitor. 5 GNDA 0V Analog system GND pin 6 7 IN2 IN1 3.5V 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 BD5423MUV ●Explanation of Pin Functions - Continued No. Symbol Pin voltage Pin description Technical Note Internal equalizing circuit 10 PLMT3 - 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 - ch1 positive bootstrap pin Connect a capacitor. 14, 15 VCCP1P Vcc ch1 positive power system power supply pin 16, 17 OUT1P Vcc～0V ch1 positive PWM signal output pin Connect with output LPF. 18, 19 GNDP1 0V ch1 power system GND pin 20, 21 OUT1N Vcc～0V ch1 negative PWM signal output pin Connect with output LPF. 22, 23 VCCP1N Vcc ch1 negative power system power supply pin 25 BSP1N - ch1 negative bootstrap pin Connect a capacitor www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 10/16 2010.05 - Rev.B BD5423MUV ●Explanation of Pin Functions - Continued No. Symbol Pin voltage Pin description Technical Note 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 MUTEX H: Mute off L: Mute on 13, 24 29, 30 37,48 N.C. - 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 BD5423MUV ●Explanation of Pin Functions - Continued No. Symbol Pin voltage Pin description Technical Note Internal equalizing circuit 33 ROSC 5.6V 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 34 TM 0～5V Connect a capacitor. Instantaneous power interruption detecting voltage setting pin 35 VHOLD 0.68×Vcc Connect a capacitor. To adjust a detecting voltage, connect a resister. 36 BSP2N - ch2 negative bootstrap pin Connect a capacitor. 38, 39 VCCP2N Vcc ch2 negative power system power supply pin ch2 negative PWM signal output pin Connect an output LPF. 40, 41 OUT2N Vcc～0V 42, 43 GNDP2 0V cch2 power system GND pin 44, 45 OUT2P Vcc～0V ch2 positive PWM signal output pin Connect an output LPF. ch2 positive power system power supply pin ch2 positive bootstrap pin Connect a capacitor. 46, 47 VCCP2P Vcc 1 BSP2P - www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 12/16 2010.05 - Rev.B BD5423MUV ●Application Circuit Diagram (under stereo operation) ・Vcc=10V～16.5V SP INPUT 1ch SP INPUT 2ch GNDA VCCA Technical Note GNDA GNDA C11 0.1μF C7 2.2μF 2.2μF R9 22kΩ R10 22kΩ R8 22kΩ C2 10μF C5 C6 12 11 10 9 8 7 6 GNDA 5 C4 10μF 4 FILP C3 1μF 3 VCCA 0.1μF + 2 1 Power Limit VCCP1 C12 0.68μF N.C. 13 N.C. FILA N.C. 48 N.C. C1 0.68μF VCCP2 14 C15 10μF + C14 0.1μF 47 PWM1 PWM2 15 16 17 18 DRIVER 1P 46 DRIVER 2P L16 15μH C16 0.22μF C46 0.1μF 45 44 43 42 L44 15μH C44 0.22μF + C39 10μF C17 1μF C41 1μF SP 1ch (4Ω) GNDP1 C20 0.22μF 15μH L20 19 20 C22 0.1μF C40 0.22μF 15μH L40 GNDP2 21 22 DRIVER 1N Protections & Logic Under Voltage Protection High Temperature Protection Output Short Protection Output DC Voltage Protection Ramp Generator DRIVER 2N 41 40 39 38 C38 0.1μF SP 2ch (4Ω) WARNING ERROR N.C. 24 N.C. Power-Off Detector C25 0.68μF 23 C36 0.68μF Clock Control Mute Control SOFT MUTE N.C. 37 N.C. N.C. N.C. 25 26 27 28 29 N.C. 30 N.C. C31 31 0.1μF 32 33 OPEN 34 0.1μF 35 36 3.3μF C35 WARNING OUTPUT R26 GNDD 100kΩ ERROR OUTPUT R27 GNDD 100kΩ MUTESPX CAREER I/O MASTER SLAVE C34 Fig. 30 Circuit Diagram of Stereo Operation with 4Ω Load www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. GNDD 13/16 2010.05 - Rev.B BD5423MUV Table 1 BOM List of Stereo Operation with 4Ω Load No. 1 2 3 4 5 6 7 8 9 10 11 12 13 Item IC C C C C C C C C C C R R Part Number BD5423MUV GRM219B31E684KA88 GRM188R11H104KA93 GRM31MB11H224KA01 25ST225M3216 50ST105M3225 GRM21BB31E335KA75 GRM188B11E104KA01 GRM21BB11C105KA01 GRM21BB31C106KE15 25SVPD10M MCR01MZPF2202 MCR01MZPF1003 Vendor ROHM MURATA MURATA MURATA Rubycon Rubycon MURATA MURATA MURATA MURATA SANYO ROHM ROHM Configuration mm inch Value 0.68µF 0.1µF 0.22µF 2.2µF 1µF 3.3µF 0.1µF 1µF 10µF 10µF 22kΩ 100kΩ Rated voltage 25V 50V 50V 25V 50V 25V 25V 16V 16V 25V 50V 50V Tolerance ±10% ±10% ±10% ±20% ±20% ±10% ±10% ±10% ±10% ±20% ±1% ±1% Temperature Quantity characteristics ±10% ±15% ±10% ±5% ±5% ±10% ±10% ±10% ±10% ±25% ±200ppm/℃ ±200ppm/℃ 1 4 5 4 2 2 1 3 1 1 3 3 2 Technical Note Reference IC1 C1, C12, C25, C36 C5, C14, C22, C38, C46 C16, C20, C40, C44 C6, C7 C17, C41 C35 C11, C31, C34 C3 C4 C2, C15, C39 R8, R9, R10 R26, R27 VQFN048V7070 2012 1608 3216 3225 3225 2012 1608 2012 2012 6666 1005 1005 0805 0603 1206 1210 1210 0805 0603 0805 0805 2626 0402 0402 No. 14 Item L Part Number 7G09B-150M Vendor SAGAMI Configuration mm 10×9×10 Value 15µH×2 Tolerance ±20% DC Resistance 44mΩmax. Rated DC Current 4.1A max. Quantity 2 Reference L16, L20, L40, L44 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 14/16 2010.05 - Rev.B BD5423MUV Technical Note ●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] Pdiss  PO  - 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 BD5423MUV ●Ordering part number Technical Note B Part No BD. D 5 Part No. 5423 4 2 3 M U V - E 2 Package MUV: VQFN048V7070 Packaging and forming specification E2: Embossed tape and reel VQFN048V7070 7.0 ± 0.1 Tape Quantity Embossed carrier tape 1500pcs E2 The direction is the 1pin of product is at the upper left when you hold 7.0 ± 0.1 1PIN MARK 1.0MAX Direction of feed S ( reel on the left hand and you pull out the tape on the right hand ) 0.08 S C0.2 1 48 4.7 ± 0.1 12 13 0.4 ± 0.1 37 36 25 24 4.7 ± 0.1 +0.03 0.02 -0.02 (0.22) 0.75 0.5 +0.05 0.25 -0.04 1pin (Unit : mm) Reel Direction of feed ∗ Order quantity needs to be multiple of the minimum quantity. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 16/16 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