EV4458DQT-00A
1A, 4MHz, 36V Step-Down Converter
Learn about our Evaluation Kit
Product Description
The EV4458DQT-00A is an evaluation board for the MP4458, a high frequency step-down switching regulator with an integrated internal high-side high voltage power MOSFET. The IC provides 1A output with current mode control for fast loop response and easy compensation.
The EV4458DQT-00A is an evaluation board for the MP4458, a high frequency step-down switching regulator with an integrated internal high-side high voltage power MOSFET. The IC provides 1A output with current mode control for fast loop response and easy compensation.
The frequency foldback helps prevent inductor current runaway during startup and thermal shutdown provides reliable, fault tolerant operation.
By switching at 4MHz, the MP4458 prevents EMI (Electromagnetic Interference) noise problems, such as those found in AM radio and ADSL applications.
Product Features
- Wide Operating Input Range
- Up to 4MHz Programmable Switching Frequency
- Precision Current Limit without a Current Sensing Resistor
- Up to 95% Efficiency
- Fully Assembled and Tested
Parametrics
1A, 4MHz, 36V Step-Down Converter
The MP4458 is a high frequency step-down switching regulator with an integrated internal high-side high voltage power MOSFET. It provides 1 A output with current mode control for fast loop response and easy compensation. The wide 4.5V to 36V input range accommodates a variety of step-down applications, including those in automotive systems. A 100µA operational quiescent current is suitable for use in battery-powered applications. The frequency foldback helps prevent inductor current runaway during startup and thermal shutdown provides reliable, fault tolerant operation. In some applications, such as AM radio and ADSL applications, in which the device is sensitive to frequency band, the MP4458 can avoid the related EMI problem by setting the frequency at 4MHz. The MP4458 is available in thin 10-pin 3x3mm TQFN package.
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