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10 W Mono Class-D Amplifier for 2S Battery Devices Company confidential
1 Terms and definitions
2 Block diagram
3 Pinout
4 Absolute maximum ratings
5 Recommended operating conditions
6 Electrical characteristics
7 Thermal protection
8 Functional description
8.1 Pop and click suppression
8.2 Short circuit/over-current protection
8.3 Thermal performance and thermal protection
8.3.1 Thermal shutdown
8.3.2 Maximum power dissipation
8.4 Gain
8.5 Class D output stage
8.6 Power down (PDN_N)
9 Typical performance plots
9.1 THD versus output power (8 Ω + 33 µH)
9.2 THD versus output power (4 Ω + 33 µH)
9.9 Max Pout versus supply voltage (8 Ω + 33 µH)
9.10 Max Pout versus supply voltage (4 Ω + 33 µH)
9.11 Efficiency versus output power (8 Ω + 33 µH)
9.12 Efficiency versus output power (4 Ω + 33 µH)
9.13 Start-up timing
9.14 Shutdown timing
9.15 Power dissipation versus output power (8 Ω + 33 µH)
9.16 Power dissipation versus output power (4 Ω + 33 µH)
9.17 Electromagnetic interference (EMI) performance
10 Application information
10.1 PCB layout
10.2 Speaker selection

10 W Mono Class-D Amplifier for 2S Battery Devices Company confidential

Datasheet Revision 3a 20-Aug-2015 CFR0011-120-00 Rev 5 1 of 25 © 2015 Dialog Semiconductor General description DA7202 is a powerful, high efficiency, low EMI Class-D speaker driver that can drive 10 W into 4 Ω loads directly from a 2S lithium ion battery pack. DA7202 is a standalone high performance mono Class-D audio amplifier targeted at powering a variety of two cell portable applications such as Ultrabooks™ and tablets. It uses a fully-differential switched mode amplifier architecture with a fixed +18 dB gain, with differential analogue inputs. It also has a PWM modulator and an H-bridged switched power output stage that delivers 8 W into an 8 Ω load, making a speaker sound louder on portable devices. The DA7202 can be directly connected between the two-cell battery and the speaker. Noise suppression circuitry to reduce audible pops and clicks at the speaker output is also included. Available as a 9-bump WL-CSP package with 0.5 mm pitch that is suited to low cost PCB technology, it is ideal for portable applications that require small footprints . Key features ■ PRMS: 3.8 W into 8 Ω load at 8.2 V, 1% THD+N ■ Efficiency: 90% @ POUT = 3.5 W at 8.2 V, 8 Ω and 85%@POUT = 7.0 W at 8.2 V, 4 Ω ■ Supports 4 Ω and 8 Ω loads ■ SNR (A-weighted) 104 dB ■ THD+N: 90 dB @ 3.0 W, 8.2 V, 8 Ω ■ PSRR: 78 dB ■ Auto-Shutdown/Start-up: <3.5 ms ■ Ultra low standby current: 7 µA ■ Short-Circuit & Thermal-Overload Protection with auto recovery ■ Wide supply voltage range 4.5 to 9.0 V ■ 9-bump WL-CSP with 0.5 mm pitch ■ 2S battery pack

Applications

■ Tablets ■ Personal navigation devices ■ Ultrabooks™ ■ Speaker accessories ■ Handheld gaming devices

1 Terms and definitions

EMC Electromagnetic Compatibility EMI Electromagnetic Interference FCC Federal Communications Commission LDO Low Dropout regulator PCB Printed Circuit Board PWM Pulse Width Modulation PSRR Power Supply Rejection Ratio RF Radio Frequency RMS Root Mean Square SNR Signal to Noise Ratio THD Total Harmonic Distortion THD+N Total Harmonic Distortion plus Noise WL-CSP Wafer Level-Chip Scale Packaging

2 Block diagram

IN_P IN_N OUT_P OUT_N GND GND PVDD PDN_N Pop/Click Suppression RF Noise Suppression Thermal Shutdown LDO Fixed +18 dB Short Circuit / Over-Current Protection VLDO 2S Battery Pack DA7202 Active Power Down Figure 1: DA7202 block diagram

3 Pinout

IN_P GND OUT_N VLDO PVDDGND IN_N PDN_N OUT_P 1 2 3 A B C KEY = Power = Ground = Other TOP VIEW Figure 2: Connection diagram Table 1: Pin description Pin no. Pin name Description A1 IN_P Positive Analogue Input A2 GND Ground A3 OUT_N Negative Output B1 VLDO Output voltage from LDO B2 GND Ground B3 PVDD Power Supply C1 IN_N Negative Analogue Input C2 PDN_N Power Down Control (0 = Power Down / 1 = Active) C3 OUT_P Positive Output

4 Absolute maximum ratings

Table 2: Absolute maximum ratings Parameter Description Conditions (Note 1) Min Typ Max Unit Storage temperature -65 +85 °C Operating temperature -45 +85 °C Junction temperature (TJ) +150 °C PVDD Supply voltage +4.5 +8.2 +10.0 V VLDO +5.0 V PDN_N Power down control -0.3 +5.0 (VLDO) V ESD susceptibility Human body model 2 kV Note 1 Stresses beyond those listed under ‘Absolute maximum ratings’ may cause permanent damage to the device. These are stress ratings only, so functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specification are not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

5 Recommended operating conditions

Table 3: Recommended operating conditions VDD = 8.2 V, TA = 25°C, RL = 8 Ω +33 μH, unless otherwise noted. Parameter Description Conditions Min Typ Max Unit PVDD Supply voltage 4.5 9.0 V VLDO Output 5.0 V 30 kΩ 18 μH PRMS Output power RLOAD = 8 Ω VPWR = 8.2 V THD+N = 1% 3.8 W PMPO (RMS) RLOAD = 8 Ω VPWR = 8.2 V THD+N = 1% 7.6 W PRMS RLOAD = 4 Ω VPWR = 8.2 V THD+N = 1% 8.0 W PMPO (RMS) RLOAD = 4 Ω VPWR = 8.2 V THD+N = 1% 10.0 W Efficiency POUT = 3.5 W RLOAD = 8 Ω + 18 μH audio = 1 kHz 90 % THD+N POUT = 3.0 W, 8 Ω, 8.2 V 90 dB SNR 104 dB PSRR (AC grounded) Frequency = 217 Hz 78 dB Gain Fixed 18 dB Output switching frequency Fixed 1 MHz Output Noise (RMS) Integrated over bandwidth SNR = 99 dB, Gain = 18 dB 60 μV Standby current consumption at Shutdown 7 μA

6 Electrical characteristics

Table 4: Digital inputs (PDN_N) Parameter Description Conditions Min Typ Max Unit VIH Input-Voltage High 1.3 +5 (VLDO) V VIL Input-Voltage Low 0 0.7 V Input Hysteresis 0.4 V IIH Input High Leakage current VIN=5 V, TA=25°C 25 µA IIL Input Low Leakage current VIN=GND, TA=25°C 0.1 µA Note 2 VIH and VIL define logic levels to enable or disable the DA7202. Table 5: Analog inputs (IN_P, IN_N) Parameter Description Conditions Min Typ Max Unit Audio input signal +5.0 V

7 Thermal protection

Monitoring of the ambient temperature does not guarantee that the junction temperature (T J) is within the specified temperature limits. The junction temperature of the device is dependent on the ambient temperature (TA), the power dissipation of the device (PD), and the junction-to-ambient thermal resistance of the package (θJA). An estimation of the junction temperature (TJ) can be calculated using the formula TJ = TA + (PD × θJA) Where:

TJ = junction temperature
TA = ambient temperature of the package (°C)
PD = power dissipation of the package (W)
θJA = junction to ambient thermal resistance (°C / W) = 72°C/W The value of θJA can vary, depending on PCB material, the layout, and the environmental conditions. The specified value of θJA (72°C/W) is based on a 4-layer, 101.5 mm x 114.5 mm circuit board as specified in the JEDEC standard JESD51-9. Table 6: Thermal protection Parameter Description Conditions Min Typ Max Unit Thermal Shutdown Threshold 150 °C Thermal Shutdown Restart Threshold 100 °C Thermal Shutdown Hysteresis 50 °C θJA Junction to ambient thermal resistance 72 °C/W

8 Functional description

The DA7202 is a powerful, high efficiency, low EMI Class-D speaker driver that can drive a maximum of 10 W into 4 Ω loads directly from a 2S lithium ion battery pack. The device provides audio noise and RF noise suppression. It also has short circuit protection, as well as protection against over-heating. The DA7202 is available in a 9-bump WL-CSP package with 0.5 mm pitch that enables low cost PCB technology which is ideal for portable applications that require small footprints.

8.1 Pop and click suppression

DA7202 includes noise suppression circuitry that reduces audible pops and clicks at the speaker output when enabling or disabling the device.

8.2 Short circuit/over-current protection

The DA7202 is protected by a short circuit/over current detector. If a short circuit is detected, regardless of the frequency of the signal, the device is disabled immediately. After 8 ms, the short-circuit status is checked. If the short condition has been resolved, the chip will be re-enabled. If the short condition still persists, the DA7202 remains disabled. The short-circuit status is checked every 8 ms until the short condition has been resolved. The chip will then be re-enabled. Note that the disabling of the chip, and its later re-enabling, are both performed without using the noise suppression circuitry. Audible artefacts may be present in the output signal. Note also that whenever the DA7202 has been powered down, the power stage is placed in a high impedance (high-Z) state to minimise power consumption.

8.3 Thermal performance and thermal protection

8.3.1 Thermal shutdown

DA7202 is provided with a thermal protection feature that automatically disables the power stage and the LDO if the junction temperature reaches 150°C. When a thermal shutdown is performed, the chip is disabled, leaving only the temperature sensor block active. The process of disabling the chip is performed using the noise suppression circuitry, so no audible artefacts will be present on the output signal during the disabling process. The time taken for a noise free shutdown is illustrated in Figure 16. If thermal shutdown is activated, the chip is not re-enabled until the temperature has dropped to 100°C. Once the temperature has reached 100°C, the DA7202 restarts with an automatic soft start. The process of re enabling the chip is performed using the noise suppression circuitry, so no audible artefacts will be present on the output signal during start-up process. The time taken for a noise free start-up is illustrated in Figure 15. Note that whenever the DA7202 has been powered down, the power stage is placed in a high impedance (high-Z) state to minimise power consumption.

8.3.2 Maximum power dissipation

Given the Junction-to-Ambient thermal impedance (72°C/W), the Power Dissipation versus Output Power (from Figure 17 and Figure 18), and the maximum junction temperature (TJ(MAX) specified in Table 6), it is possible to calculate the maximum ambient temperature (TA(MAX)) using the following equation: TA(MAX) = TJ(MAX) – θJA x PD(MAX) Up to an ambient temperature of 85°C, DA7202 can dissipate 0.56 W of heat before reaching 125°C. Note that if the DA7202 is operated continuously at, or close to, its maximum output power, there is a risk of overheating and thermal shutdown unless steps are taken to dissipate this excess heat.

8.4 Gain

The DA7202 has a fixed gain of +18 dB. Output volume is directly proportional to the input signal strength. It is assumed that any required variation in output volume will be controlled by varying the DA7202 input signal. The input signal amplitude can be reduced by the use of resistor dividers in conjunction with the known input impedance.

8.5 Class D output stage

The class D output stage is connected directly to the PVDD (two cell battery pack) power supply. High-efficiency operation is achieved by operating the output transistors as switches. The output power transistors are either fully On or fully Off, providing a minimum resistance path for current from the power supply to the load. The block’s outputs are connected directly to the speaker at OUT_P and OUT_N. Filterless operation is achieved by connecting a load (a speaker) between the output terminals of the Class D ouput block. As a result, the voltage across the load represents a PWM (Pulse Wid th Modulated) audio signal, while the output current in the load is a filtered, demodulated representation of the input audio signal. For filterless operation, the speaker load can be considered as a first order output filter with a cut -off frequency well below the PWM carrier signal (the current in the load is a filtered version of the output PWM voltage signal). See section 10.2 for further detail on speaker selection.

8.6 Power down (PDN_N)

The DA7202 is powered down by pulling the PDN_N pin low. When the device is powered down, a controlled shutdown process is performed, thus ensuring that there are no audible artefacts (pops and clicks) on the output path. The time to disable the device is illustrated in Figure 16. Table 7: Actions of the PDN_N pin PDN_N Value Description

0 Power Down

1 Active

9 Typical performance plots

9.1 THD versus output power (8 Ω + 33 µH)

Figure 3: THD versus output power (8 Ω + 33 µH)

9.2 THD versus output power (4 Ω + 33 µH)

Figure 4: THD versus output power (4 Ω + 33 µH)

Datasheet Revision 3a 20-Aug-2015 CFR0011-120-00 Rev 5 13 of 25 © 2015 Dialog Semiconductor 9.3 THD versus frequency (8 Ω + 33 µH) 4.5 V Figure 5: THD versus frequency (8 Ω + 33 µH) 4.5 V 9.4 THD versus frequency (4 Ω + 33 µH) 4.5 V Figure 6: THD versus frequency (4 Ω + 33 µH) 4.5 V

Datasheet Revision 3a 20-Aug-2015 CFR0011-120-00 Rev 5 14 of 25 © 2015 Dialog Semiconductor 9.5 THD versus frequency (8 Ω + 33 µH) 8.2 V Figure 7: THD versus frequency (8 Ω + 33 µH) 8.2 V 9.6 THD versus frequency (4 Ω + 33 µH) 8.2 V Figure 8: THD versus frequency (4 Ω + 33 µH) 8.2 V

Datasheet Revision 3a 20-Aug-2015 CFR0011-120-00 Rev 5 15 of 25 © 2015 Dialog Semiconductor 9.7 THD versus frequency (8 Ω + 33 µH) 9.0 V Figure 9: THD versus frequency (8 Ω + 33 µH) 9.0 V 9.8 THD versus frequency (4 Ω + 33 µH) 9.0 V Figure 10: THD versus frequency (4 Ω + 33 µH) 9.0 V

9.9 Max Pout versus supply voltage (8 Ω + 33 µH)

Figure 11: Maximum output power (Pout) versus supply voltage (8 Ω + 33 µH)

9.10 Max Pout versus supply voltage (4 Ω + 33 µH)

Figure 12: Maximum output power (Pout) versus supply voltage (4 Ω + 33 µH) Output Power (W) PVDD (V) Max POUT vs PVDD, Load = 8 Ohms + 33uH 10% Output Power (W) PVDD(V) Max POUT vs PVDD, Load = 4 Ohms + 33uH 10%

9.11 Efficiency versus output power (8 Ω + 33 µH)

Figure 13: Efficiency versus output power (8 Ω + 33 µH)

9.12 Efficiency versus output power (4 Ω + 33 µH)

Figure 14: Efficiency versus output power (4 Ω + 33 µH) 100 0 2 4 6 8 Efficiency (%) Output Power Efficiency vs Output Power, 8 Ohms PVDD = 9.0 V PVDD = 8.2 V PVDD = 4.5 V 100 0 2 4 6 8 10 12 Efficiency (%) Output Power Efficiency vs Output Power, 4 Ohms PVDD = 9.0 V PVDD = 8.2 V PVDD = 4.5 V

9.13 Start-up timing

Figure 15: Start-up timing (260 µs from asserting PDN_N to valid output)

9.14 Shutdown timing

PDN_N OUT_P OUT_N Shutdown time 19 µs Figure 16: Shutdown timing (19 µs from de-asserting PDN_N to zero output)

9.15 Power dissipation versus output power (8 Ω + 33 µH)

Figure 17: Power dissipation versus output power (8 Ω + 33 µH)

9.16 Power dissipation versus output power (4 Ω + 33 µH)

Figure 18: Power dissipation versus output power (4 Ω + 33 µH) 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0 1 2 3 4 5 6 Power Dissipation (W) Output Power (W) Power Dissipation (8 Ohms) PVDD = 8.2V PVDD = 4.5V 0.5 1.5 2.5 0 2 4 6 8 10 Power Dissipation (W) Output Power (W) Power Dissipation (4 Ohms) PVDD = 8.2V PVDD = 4.5V

9.17 Electromagnetic interference (EMI) performance

Figure 19: EMI performance with FCC Class-D limit also shown Note 3 Measurements taken using a typical layout as illustrated in Figure 20 (speaker cable length = 12 cm). -10 0 200 400 600 800 1000 dBuV Frequency (Mhz) DA7202 PVDD = 8.2 V

10.1 PCB layout

The performance of the DA7202 relies on good PCB layout. Failure to follow best practice can have undesired side effects that include, but are not limited to, electromagnetic interference (EMI) and electromagnetic compatibility (EMC) problems, ground bounce, and voltage losses. Poor layout can also affect regulation and stability. Dialog Semiconductor recommend that the following guidelines are followed:

Place any input capacitors and output capacitors close to the device using sho rt tracks. These components carry high switching frequencies, and long tracks can act as an antenna.
Maximise the size of ground metal on the component side to help with thermal dissipation.
Use a ground plane with several vias connecting to the component side ground to further reduce noise interference on sensitive circuit nodes.
If external resistors are to be used to change the gain, these should be placed close to the device.
It is recommended that ferrite beads are included on the output paths to reduce EMI interference and noise.

10.2 Speaker selection

The output from the DA7202 Class-D amplifier contains high frequency signals that are a result of its switched PWM operation. These high frequency harmonics are at a much higher frequency than is recommended for most speakers, so they must be filtered out to protect the speaker. The correct choice of speaker is therefore important since the speaker itself can act as a low -pass filter, attenuating the undesirable high frequency harmonics while still passing the desired audio frequencies. The 3 dB cut-off frequency for speaker inductance and resistance can be calculated using the following formula: fc = RLOAD / 2πL Therefore to achieve a 3 dB cut-off frequency of 20 kHz with an 8 Ω speaker, a speaker should be selected with an inductance of: L = RLOAD / 2πfc = 8 Ω / 2π * 20 kHz = 64 μH 8 Ω speakers for portable applications typically have an inductance in the range of 20 μH to 100 μH. Speakers with a higher inductance than the 64 μH calculated above will have a 3 dB cut-off frequency below 20 kHz, resulting in a reduced audio bandwidth. Conversely, speakers with an inductance lower than 64 μH will have a higher cut-off frequency.

10.3 Recommended external component layout

OUT_P OUT_N VLDO PVDD 100pF 100pF 0.22µF 4.7µF 0.1µF PDN_N IN_N IN_P Note: Ferrite beads are added on the output path to reduce noise and EMI GND GND DA7202 Active Power Down 1µF 1µF 2S Battery 220Ω at 100MHz 220Ω at 100MHz Figure 20: Layout of recommended external components and their values

10.4 Recommended external components

Table 8: Recommended external components Pin Name Capacitance Tolerance Voltage Dielectric Manufacturer Part number PVDD 4.7 µF ±10% 35 V X5R Muruta GRM188R6YA475KE15 PVDD OUT_P OUT_N 100 pF ±5% 50 V COG/NPO Muruta GRM1555C1H101JD01D VLDO 4.7 µF ±10% 16 V X7R Muruta GRM155R71C224KA12D IN_P IN_N 1 µF ±10% 10 V X5R Muruta GRM155R61A105KE15D Ferrite bead 220 Ω at

100 MHz

±25% 2 A TDK MPZ1608S221A

10.5 Capacitor selection

10.5.1 Input and output capacitors

The DA7202 is designed for operation with small, space-saving ceramic capacitors, but function with most commonly used capacitors as long as attention is paid to the ESR value. The ESR of the output capacitor affects the stability of the LDO control loop. A minimum of 3.0 μF capacitance with an ESR of 1 Ω or less is recommended for the input capacitor on PVDD to ensure the stability of the DA7202. Transient response to changes in load current is also affected by output capacitance. Using a larger value of output capacitance improves the DA7202’s transient response to large chang es in load current.

10.5.2 Input and output capacitor properties

Use any good quality ceramic capacitors with the DA7202 that meet the minimum capacitance and maximum ESR requirements. Ceramic capacitors are manufactured with a variety of dielectrics, each with a different behaviour over temperature and applied voltage. Capacitors must have a dielectric sufficient to ensure that the minimum capacitance over the required temperature range and the DC

Datasheet Revision 3a 20-Aug-2015 CFR0011-120-00 Rev 5 23 of 25 © 2015 Dialog Semiconductor bias conditions. X5R or X7R dielectrics with a voltage rating of greater than 16 V are recommended for best performance. Y5V and Z5U dielectrics are not recommended. The voltage stability of a capacitor is strongly influenced by the capacitor size and its voltage rating. In general, a capacitor in a larger package or with a higher voltage rating exhibits better stability. The temperature variation of the X5R dielectric is about 15% over the −40°C to +85°C operating temperature range of the DA7202, and is not a function of package or voltage rating. Figure 21: Performance plot of the sample capacitor used in the example (below) Use the following equation to determine the worst case capacitance, accounting for capacitor variation over temperature, component tolerance, and voltage. COUT = CEFF × (1 − TEMPCO) × (1 − TOL) Where:

CEFF is the effective capacitance at the operating voltage
TEMPCO is the worst-case capacitor temperature coefficient, specified as a value between 0 and
TOL is the worst-case component tolerance, specified as a value between 0 and 1. In this example, the worst case temperature coefficient (TEMPCO) over −40°C to +85°C is assumed to be 15% for an X5R dielectric. The tolerance of the capacitor (TOL) is assumed to be 10%, and CEFF is 4.620 μF at 7.2 V, as shown in Figure 21. Substituting these values into the equation yields The capacitor chosen in this example therefore meets the minimum capacitance requirement of the LDO over temperature and tolerance at the chosen output voltage. To guarantee the performance of the DA7202, it is imperative that the effects of DC bias and temperature on the behaviour of the capacitors are evaluated for each application.

11.1 Package outlines

Figure 22: DA7202 package outline drawing (9-bump WL-CSP 0.5 mm pitch)

11.2 Soldering information

Refer to the JEDEC standard J-STD-020 for relevant soldering information. This document can be downloaded from http://www.jedec.org. The ordering number consists of the part number followed by a suffix indicating the packing method. For details and availability, please consult Dialog Semiconductor’s customer portal or your local sales representative. Table 9: Ordering information Part number Package Shipment form Pack quantity DA7202-00UH2 9-bump CSP Pb free/green T & R 4000

Datasheet Revision 3a 20-Aug-2015 CFR0011-120-00 Rev 5 25 of 25 © 2015 Dialog Semiconductor Status definitions Revision Datasheet status Product status Definition 1.<n> Target Development This datasheet contains the design specifications for product development. Specifications may be changed in any manner without notice. 2.<n> Preliminary Qualification This datasheet contains the specifications and preliminary characterisation data for products in pre-production. Specifications may be changed at any time without notice in order to improve the design. 3.<n> Final Production This datasheet contains the final specifications for products in volume production. The specifications may be changed at any time in order to improve the design, manufacturing and supply. Relevant changes will be communicated via Customer Product Notifications. 4.<n> Obsolete Archived This datasheet contains the specifications for discontinued products. The information is provided for reference only. Disclaimer Information in this document is believed to be accurate and reliable. However, Dialog Semiconductor does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information. Dialog Semiconductor furthermore takes no responsibility whatsoever for the content in this document if provided by any information source outside of Dialog Semiconductor. Dialog Semiconductor reserves the right to change without notice the information published in this document, including without limitation the specification and the design of the related semiconductor products, software and applications. Applications, software, and semiconductor products described in this document are for illustrative purposes only. Dialog Semiconductor makes no representation or warranty that such applications, software and semiconductor products will be suitable for the specified use without further testing or modification. Unless otherwise agreed in writing, such testing or modification is the sole responsibility of the customer and Dialog Semiconductor excludes all liability in this respect. Customer notes that nothing in this document may be construed as a license for customer to use the Dialog Semiconductor products, software and applications referred to in this document. Such license must be separately sought by customer with Dialog Semiconductor. All use of Dialog Semiconductor products, software and applications referred to in this document are subject to Dialog Semiconductor’s Standard Terms and Conditions of Sale, unless otherwise stated. © Dialog Semiconductor. All rights reserved. RoHS compliance Dialog Semiconductor complies to European Directive 2001/95/EC and from 2 January 2013 onwards to European Directive 2011/65/EU concerning Restriction of Hazardous Substances (RoHS/RoHS2). Dialog Semiconductor’s statement on RoHS can be found on the customer portal https://support.diasemi.com/. RoHS certificates from our suppliers are available on request. Contacting Dialog Semiconductor United Kingdom (Headquarters) Dialog Semiconductor (UK) LTD Phone: +44 1793 757700 Germany Dialog Semiconductor GmbH Phone: +49 7021 805-0 The Netherlands Dialog Semiconductor B.V. Phone: +31 73 640 8822 North America Dialog Semiconductor Inc. Phone: +1 408 845 8500 Japan Dialog Semiconductor K. K. Phone: +81 3 5425 4567 Taiwan Dialog Semiconductor Taiwan Phone: +886 281 786 222 Singapore Dialog Semiconductor Singapore Phone: +65 64 8499 29 Hong Kong Dialog Semiconductor Hong Kong Phone: +852 3769 5200 Korea Dialog Semiconductor Korea Phone: +82 2 3469 8200 China (Shenzhen) Dialog Semiconductor China Phone: +86 755 2981 3669 China (Shanghai) Dialog Semiconductor China Phone: +86 21 5424 9058 Email: enquiry@diasemi.com Web site: www.dialog-semiconductor.com

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10 W Mono Class-D Amplifier for 2S Battery Devices

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10 W Mono Class-D Amplifier for 2S Battery Devices

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