Микросхемы и комплектующие A4490EES-T

Импульсный DC/DC стабилизатор , понижающий, 3 выхода, 4.5В до 34В вход, 5В/1.5А выход, 630кГц, QFN-20

The A4490EES-T is a triple output step-down Switching Regulator with multiphase switching and independent control of each converter. The A4490 regulator provides three high current, high performance and switching regulator outputs with independent soft start. High frequency switching allows selection of inexpensive inductors and small ceramic output capacitors. The turn-on cycles of the regulator is interleaved to minimize stresses on the input capacitors and to reduce EMI. A charge pump is used to provide the supply for driving the power switches, ensuring operation at very wide operating duty cycles and avoiding the need for power-draining clamp circuits. Internal diagnostics provide comprehensive protection against overloads, input under-voltages and over-temperatures.

• Internal compensation
• Power-on-reset flag
• 550kHz Fixed frequency
• -40 to 85°C Operating temperature range

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