Compact Integrated 600mA Switching Converter with 4-Channel 300mA

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Manufacturer Skyworks


Description :

The AAT2614 is a multiple rail power management integrated circuit. It integrates a 600mA switching regulator and four fully integrated 300mA low dropout (LDO) regulators in a small Pb-free 3mm x 3mm, 20-pin TQFN package or in a 1.65mm x 1.65mm, 16-bump CSP-0.4 package making it ideal for space-constraint systems. The step-down converter is a monolithic synchronous converter, which integrates its compensation network and features up to 90% efficiency. It operates at 2MHz and uses a tiny 2.2μH inductor with a small 10μF output capacitor. At no load, AAT2614 current consumption is typically equal to 260μA. Each LDO operates with a small 1μF output capacitor and only two 2.2μF input capacitors are required for the inputs. All regulators include a separate enable providing a convenient solution to implement any power-up and power-down sequencing. All output voltages are factory One Time Programmable (OTP). The typical regulation accuracy is +/-1% for all channels. With their separate inputs the linear regulators can use the switcher's output as their input power, in order to reduce drop out voltage and improve efficiency. AAT2614 is a safe solution, which integrates an over-current limit for each channel and over-temperature protection. The device is rated over a temperature range of -40°C to 85°C.

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    • Current Mode Control DC/DC Converter:
    • Fixed Factory Programmable Output Up to 600mA
    • 1.7MHz Switching Frequency
    • Up to 90% Efficiency
    • Integrated Switching Power FETS
    • Integrated Compensation Network
    • Internal Current Limit
    • 4 Low Dropout Regulators with Separate Enable Pins:
    • 300mA per Channel
    • High PSRR
    • Factory Programmable Output
    • Integrated Soft-Start
    • Over-Current Protection
    • Over-Thermal Protection
    • TQFN33-20 and WLCSP-16 Packages

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Features Similar products
Control scheme Fixed Frequency Peak Current Control  

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Switching frequency (kHz) 1700  
Max Input Voltage (V) 2.5 to 5.5  
Output Voltage (V) 1.8 to 2.8  
Typ. Active Current (µA) 260  
Typ. Dropout Voltage @ Max. lout (mV) 500 Max  
Typ. Output Voltage Accuracy (%) ± 3  
Output Capacitor Type 4.7 μF, X5R or X7R Ceramic Capacitor  
Output Current (mA) 600  
Operating Temperature (°C) -40 to +150  
Package TQFN33-20