Ht8513 single lithium battery power supply with built-in Dynamic Synchronous Boost 5W mono audio power amplifier IC solution

The speaker powered by a single lithium battery is still the largest product category in the speaker market , power 、 efficiency 、 Auditory perception 、PCB Peripheral cost Electronic engineers design and select audio power amplifier IC Main index requirements . Based on the portable Bluetooth speaker, the output power is increasing , Power amplifier IC Built in boost is required . The power increase is bound to shorten the battery life of lithium batteries , In particular, small capacity lithium battery products are more detailed .

Shenzhen yongfukang Technology Co., Ltd. aims at portable Bluetooth speakers and 4 " 、6 The application requirements of inch portable outdoor speakers , Promote a single lithium battery powered built-in dynamic synchronous boost 5W Mono audio power amplifier IC-HT8513.HT8513 It has three major advantages over similar competitive products ： One is to adopt high-efficiency synchronous boost , Compared with asynchronous, the efficiency is improved 5%, And no Schottky diode is needed in the periphery , Small inductor is used for peripheral boost ,PCB The area is also smaller , Lower overall cost ; Second, dynamic boost , The chip automatically detects the size of the input audio signal , Small signal does not boost , Large signal automatic boosting , Greatly extend the battery life of lithium battery （ Especially when playing at medium and small volume , The playback time of the relatively constant boost audio power amplifier is prolonged 15% above ）; Third, compared with the charge pump boost power amplifier , Can drive the lowest 2 European horn , More bass .

HT8513 Built in anti broken sound function , Maintain the consistent sound quality characteristics of Jiaxing Herun audio amplifier ： The bass is full and the dive is good , Baritone magnetic without noise , The treble is clear without sting . in addition ,HT8513 built-in DC-DC The current limit of the module can be adjusted on the periphery , It can match the discharge current of different battery protection boards , The application is very flexible . Perfect overcurrent protection , Overheating protection , Under voltage protection , Output short circuit protection .

Product features

・ Anti - distortion function ( Anti breaking sound , Anti-Clipping Function, ACF)

・ Filter free digital modulation , Direct drive speaker

・ Output power  5W (VBAT=3.3V, RL=4Ω, THD+N<10%, 20-20kHz full band)

・VBAT Power supply range ：2.7V to 5.5V

・ Efficient adaptive synchronous boost function  - Extend battery playback time  - Adjustable maximum current limit , Effectively prevent the battery from pulling

・AB/D Class switchable

・ Protection function : Over current / Overheated / Under voltage abnormal protection function

・ Lead free packaging ,SSOP10L-PP

application
・ bluetooth / Wi-Fi Loudspeaker box   ・ Portable speakers   ・ Intelligent speakers    ・ Smart home

HT8513 Output power test ：VBAT=3.6V,f=1kHz

HT8513 Dynamic boost waveform ：

HT8513  contrast 2850 Output power curve ：(VBAT=3.6V,RL=4Ω, The anti breaking sound is turned on ACF)

HT8513  contrast 2850 Output power curve ：(VBAT=3.6V,RL=3Ω, The anti breaking sound is turned on ACF)

HT8513  contrast 2850 Output power curve ：(VBAT=3.6V,RL=2.5Ω, Anti breaking sound off ACFOFF)

HT8513 Output power curve ：(VBAT=3.6V,RL=2Ω, Anti breaking sound off ACFOFF)

HT8513 Application information

1. HT8513 Foot bitmap

 

2. HT8513 Pin instructions

3. HT8513 DEMO plate Schematic diagram

4. HT8513 DEMO plate PCB Top level design drawing

5. HT8513 DEMO plate PCB Ground floor design drawing

6. HT8513  DEMO Plate patch diagram

7.HT8513  DEMO Board bill of materials

8.HT8513  DEMO plate A physical picture