AAT2610 Seven-Channel PMU for Digital Still Cameras

The AAT2610 is a highly integrated power management solution specifically suited for Digital Still Camera (DSC) systems, featuring seven DC-DC switching regulators for maximum operating efficiency. The input operating voltage range is 1.6 to 5.5V, making the device an ideal solution for 1-cell Li-ion batteries, 2-cell alkaline batteries, and USB and regulated AC-DC wall adapters. All seven DC-DC switching regulators feature high efficiency light load operating mode to extend battery life while in low power standby state. Three different DC-DC building blocks provide maximum design flexibility: a boost (step-up) DC-DC controller with an output voltage range of 3.0V to 5.5V and a current mode control buck (step-down) or boost (step-up) DC-DC controller with an output voltage range of 2.5V to the step-up converter (SU) output voltage and buck output range of 0.6V to VIN. Dual current mode control synchronous buck regulators provide low voltage, low noise outputs required for system logic and memory. Output voltage range is 0.6V to VIN. The Auxiliary 1 boost (step-up) is ideally suited for LCD backlight and can drive 1-6 white LEDs up to a maximum of 30mA with ±10% accuracy. PWM input controls LED dimming across the frequency range from 10% to 100% duty cycle. The integrated OVP and SCF feature protects the device from open-circuit LED conditions. The Auxiliary 2 boost (step-up) and Auxiliary 3 buck-boost (inverting) output provide low noise (≤30mVpp) +15V and -7.5V outputs for CCD loads. An expensive transformer is not required. No external MOSFETs and low profile TQFN55-40L package are ideal to save space for DSC solution. Integrated, low RDS(ON) power MOSFETs provide output voltages from 0.6V to 16VDC and an inverting output up to -10V. The high switching frequency ensures small external filtering components. Internal compensation is provided for optimum transient performance and minimum application design effort.

技术特性

Input Voltage Range 1.6 to 5.5V
1-Cell Li-ion, 2-Cell Alkaline
Adapter or USB Inputs
7 Channel up to 96% High Efficiency DC/DCs
Adjustable Output
4 Channel Synchronous Rectification
Light Load Mode for High Efficiency
<1μA Total Quiescient Current
Current Mode Control
Fast, Stable Transient Response
No External Compensation
Current Limit for Internal MOSFET Protection
High Frequency 1.5MHz System Clock
High Voltage Series LED Driver
1 to 6 White LEDs
Up to Maximum 30mA LED Current
External Schottky Diode
±10% Accuracy Current Sink
ntegrated OVP
PWM Dimming: 1k to 30kHz, 10 to 100% Duty Cycle
Step-Up and Inverting Outputs for CCD
Low Noise Outputs
Transformerless Inverter Output
Flexible Sequencing Implementation
Independent Enable Control
10ms Pre-Programmed Buck or Boost Delay
Integrated Soft-Start
Over-Voltage and Over-Temperature Protection
Pb-free TQFN55-40L Package
Temperature Range: -40°C to +85°C

应用领域 APPLICATION

DSCs and DVCs
MP3 Players
PMP

订购信息 Ordering Information

AAT2610

AAT2610 典型应用

应用技术支持与电子电路设计开发资源下载	版本信息	大小
AAT2610 数据资料DataSheet下载:pdf	Rev.V2	2 页