AAT2610_12 Datasheet, PDF (1/31 Pages) Skyworks Solutions Inc. – Seven-Channel PMU for Digital Still Cameras

DATA SHEET
AAT2610
Seven-Channel PMU for Digital Still Cameras
General Description
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 fea-
ture 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 cur-
rent 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 out-
put range of 0.6V to V_IN. Dual current mode control syn-
chronous buck regulators provide low voltage, low noise
outputs required for system logic and memory. Output
voltage range is 0.6V to V_IN. 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% accu-
racy. PWM input controls LED dimming across the fre-
quency range from 10% to 100% duty cycle. The inte-
grated 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 pack-
age are ideal to save space for DSC solution. Integrated,
low R_DS(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 opti-
mum transient performance and minimum application
design effort.
Features
• 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
▪ Integrated 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
Applications
• _{DSCs and DVCs}
• _{MP3 Players}
• _PMP
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
202208A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 25, 2012
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