Atmel AT3C206手机模拟部分解决方案

Atmel公司的AT3C206器件集成了电源和音频接口的集成电路，包括有功率管理IC如LDO，DC/DC转换器，Li离子电池充电器，白光LED驱动器，电荷泵，RTC和GPIO以及16位音频CODEC，16位立体声DAC以及300mW扬声器驱动器。广泛应用在手持无线多媒体设备如智能手机，VoIP手机和PDA等。本文介绍了AT3C206的主要性能，典型的应用电路图以及各个主要功能的方框图。

The AT73C206 is the integrated analog device for VoIP and Cellular phones. It
integrates a power management IC, which includes LDO, DC/DC converter, Li-ion
battery charger, White LED driver, Charge Pump, RTC and GPIO, as well as Audio
CODEC in one chip.

主要特性：
Power Supply Control
Power Supply Control: Power-on Factor (2 External Signals and 2 Internal Signals)
Battery Voltage Detection
Reset Detection
Thermal Protection
SMPL (Sudden Momentary Power Loss) Function
Power Supply Function
Step-down DC/DC Converter × 1 (One-shot PWM)
LDO × 9 (ECO-mode for LDO1 and 3)
Over-current Protection (All Linear Regulators)
Li-ion Battery Charger
CC/CV Charge
Internal P-MOS, Current Sense Resistor and Schottky Diode
Charge Current Control by Chip Temperature
White LED Driver and Charge Pump
White LED Driver for Backlight: Up to 25 mA/LED x 4
White LED Driver Charge Pump: Up to 100 mA
RTC
Built-In Coin Charge Regulator
32 kHz Crystal Oscillator (with Time Adjustment Function)
32 kHz Output
Audio CODEC
Voice CODEC: 16-bit Linear CODEC
Audio DAC: 16-bit Linear Stereo DAC
Tone Generator: Supports 16 DTMF Tones
Mono MIC Amplifier: Differential Amplifier
Stereo Headphone Amplifier: 22 mW (32 Ohm Load)
Mono Receiver Amplifier: 60 mW (32 Ohm BTL Load)
Mono Speaker Amplifier: 300 mW (8 Ohm BTL Load)
Microphone Bias Supply: Output Voltage = 2.2V
PLL
Jack Detect Input 200 kOhm Pull-up
CPU Interface
SPI (Max 10 MHz)
Others
GPIO 4ch2ch: Common Use with ADC Input
8-bit ADC (Battery Monitor, Charge Current Monitor, 2 Channels of External Input)
Package
96-pin CSP Package (Body size: 9 x 9 x 1mm, Pin pitch 0.8mm)
Process
CMOS Process
典型应用电路图：



AT3C206电源控制和重置方框图：



AT3C206 LDO 稳压器方框图：



AT3C206降压DC/DC转换器方框图：



AT3C206白光LED 驱动器和电荷泵方框图：



AT3C206 Li离子电池充电器方框图：



AT3C206 4路8位 A/D 转换器方框图：



AT3C206 RTC 方框图：



AT3C206 音频CODEC 方框图：



AT3C206 时钟方框图：