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Product Descriptions

LC1132 is a power management system chip including audio application optimized for 2G/3G  handsets and smart phones. LC1132 contains 4 buck converters and 19 LDOs. Sophisticated  controls are available for power up, battery charging and the RTC alarm. The battery charger in  LC1132 supports lithium- ion (Li-ion) battery and provides pre-charge indication. The charger  input voltage can be up to 15V and allows USB charging, too. 

The LC1132 also provides an integrated audio subsystem that supports both analog and digital  audio functions. The LC1132 includes a high quality stereo DAC, a mono DAC, a stereo ADC,a  stereo headphone amplifier, which supports output cap-less (OCL) or AC-coupled (SE) modes of  operation, a mono receiver amplifier, and a Class D loudspeaker amplifier. It is designed for  demanding applications in mobile phones and other portable devices. The LC1132 features a  bi-directional I2S interface and a bidirectional PCM interfaces for full range audio on either  interface. 

The LC1132 utilizes an I2C interface for control. The stereo DAC path features an SNR of 93  dB with a 24-bit 48 kHz input. The headphone amplifier delivers at least 33mW to a 32Ω  single-ended stereo load with less than 1% distortion (THD+N) when CPVDD = 1.8V. The mono  receiver amplifier delivers at least 55mWRMS to a 16Ω load with less than 1% distortion  (THD+N) when A_VDD = 3.3V. The mono speaker amplifier delivers up to 800mW into an 8Ω  load with less than 1% distortion when SPK_VDD = 4.2V. 

The LC1132 employs advanced techniques to reduce power consumption, to reduce controller  overhead, to speed development time, and to eliminate click and pop. Boomer audio power  amplifiers were designed specifically to provide high quality output power with a minimal amount  of external components.

It is therefore ideally suited for mobile phone and other low voltage applications where  minimal power consumption, PCB area and cost are primary requirements.

 LC1132 is available in a 147-pin LFBGA package. The operating temperature ranges from -25  to +85°C. 

Product Features

? Handles all 2G/3G/smart phone baseband power management Handles all voice/audio codec 

? Input range: 3.0 ~ 4.5V 

? Charger input of up to 15V 

? 4 buck converters and 19 LDOs optimized for specific 2G/3G/smart phone subsystems 

? Flexibility for various configurations of backlight LED drivers: 3 current SINK 

? Read/write I2C compatible control interface 

? Pre-charge indication

? Li-ion battery charging function

? Flexibility configurations of DCDC output with DVFS control or OSCEN Control 

? Over-current and thermal overload protection 

? Programmable under voltage lockout protection 

? Power-on reset and start-up timer

? Precise voltage, temperature measurement  

? Automatic headphone & microphone detection

? Mono Class D 8Ω amplifier, 800 mW at 4.2V

? OCL or AC-coupled headphone operation 

? 33mW stereo headphone amplifier at 1.8V

? 55mW receiver amplifier at 3.3V 

? 24-bit stereo DAC and mono DAC 

? 16-bit stereo ADC 

? 8 kHz to 96 kHz stereo audio playback 

? 8 kHz to 96 kHz mono recording

? Bidirectional IIS compatible audio interface 

? Bidirectional PCM compatible audio interface 

 ? FIR filter programmability for tone control 

? Low power clock network operation if a 12 MHz or 13 MHz system clock is available 

? Automatic gain control for microphone input 

? Mono differential auxiliary output 

? Stereo line inputs 

? Differential microphone input 

 ? Multi-function IRQ output 

? 147-pin LFBGA package

Product Applications

LC1132 is ideal for power management and voice/audio subsystem of 2G, 3G, smart phones and  other portable systems, such as Leadcore 3G smart phone platform LC1812.

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