描述 Description

The AP3031 is an inductor-based DC/DC boost converter designed to drive °C arrays. 1.4A switching current allows AP3031 to be used in different 7' to 10' LCD panel backlights (3*13 °C arrays typically). A constant frequency 1MHz PWM control scheme is employed in this IC, which means tiny external components can be used. Specifically, 1mm tall 4.7μH inductor and 0.47μF output capacitor for the typical application is sufficient. The over output voltage protection is equipped in AP3031, which protects the IC under open load condition. The AP3031 includes UVLO, soft-start, current limit and OTSD to protect the circuit.

特性 Features

Up to 92% Efficiency (VIN=9V, IOUT=260mA)
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\t\tUp to 84% Efficiency (VIN=5V, IOUT=260mA)
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\t\tFast 1MHz Switching Frequency
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\t\tWide Input Voltage Range: 2.7V to 16V
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\t\tLow 200mV Feedback Voltage
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\t\tOutput Over Voltage Protection
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\t\tCycle by Cycle Current Limit: 1.4A
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\t\tBuilt-in Soft-start
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\t\tBuilt-in Standby Mode to Achieve High Frequency PWM Dimming
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\t\tBuilt-in Thermal Shutdown Function
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\t\tUnder Voltage Lockout

應(yīng)用 Application

7' to 10' LCD Panels
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\t\tDigital Photo Frame
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\t\tGPS Receiver
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\t\tEPC
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\t\tPDVD