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Skyworks - Seven-Channel PMU

Numéro de référence AAT2610
Description Seven-Channel PMU
Fabricant Skyworks 
Logo Skyworks 





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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 VIN. 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 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% 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 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 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 • [email protected] • www.skyworksinc.com
202208A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 25, 2012
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