Dual 600mA, 1MHz Step-Down DC/DC Converter

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Manufacturer Skyworks


Description :

The AAT2511 is a member of AnalogicTech's Total Power Management IC™ (TPMIC™) product family. It is comprised of two 1MHz step-down converters designed to minimize external component size and cost. The input voltage ranges from 2.7V to 5.5V. The output voltage ranges from 0.6V to the maximum applied input voltage and is externally adjustable. Peak current mode control with internal compensation provides a stable converter with low ESR ceramic output capacitors for extremely low output ripple. Each channel has a low 25μA quiescent operating current, which is critical for maintaining high efficiency at light load. For maximum battery life, each converter's high-side P-channel MOSFET conducts continuously when the input voltage approaches dropout (100% duty cycle operation). Both regulators have independent input and enable inputs. The AAT2511 is available in a Pb-free, thermally enhanced 12-pin TDFN33 package, and is rated over the -40°C to +85°C temperature range.

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    • Up to 97% Efficiency
    • 25μA Quiescent Current Per Channel
    • VIN Range: 2.7V to 5.5V
    • VOUT Range: 0.6V to VIN
    • Output Current: 600mA
    • Low RDS(ON) 0.4 Integrated Power Switches
    • Low Drop Out 100% Duty Cycle
    • 1.0MHz Switching Frequency
    • Shutdown Current <1μA
    • Current Mode Operation
    • Internal Reference Soft Start
    • Short-Circuit Protection
    • Fast Turn-On (100μs Typical)
    • Over-Temperature Protection
    • 3mm x 3mm, < 1mm high
    • TDFN33-12 Package
    • -40°C to +85°C Temperature Range

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Features Similar products
Control scheme Peak Current Mode  

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Switching frequency (kHz) 1000  
Max Input Voltage (V) 2.7 to 5.5  
Output Voltage (V) 0.6 to 5.5  
Typ. Active Current (µA) 25  
Output Capacitor Type 4.7 to 10 μF, X5R or X7R Ceramic Capacitor  
Output Current (mA) 600  
Operating Temperature (°C) -40 to +85  
Package TDFN33-12