MCP1642BT-30I/MC

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DC DC switching regulators are integrated circuit (IC) based power conversion devices that convert the input voltage of a signal to a regulated output voltage. The MCP1642BT-30I/MC is a DC-DC switching regulator IC, specifically designed for single-ended flyback converter applications. It is a pin-compatible upgrade for the popular low-cost MCP1640/41 regulator ICs.

The MCP1642BT-30I/MC features a built-in programmable maximum duty cycle of up to 99% to reduce the output voltage ripple and a start-up current of only 30 μA, allowing the user to design a high-efficiency, cost-effective single-ended flyback power solution. In addition, the MCP1642BT-30I/MC provides an adjustable frequency up to 1 MHz, allowing for a wide range of applications.

The MCP1642BT-30I/MC is built with a variety of features designed to reduce cost, size and complexity while delivering a reliable, efficient and cost-effective solution. These features include an integrated programmable low-dropout (LDO) regulator, an on-chip error amplifier, a built-in bias for diode ORing, and an adjustable OTP thermal shutdown threshold. The device also includes a programmable burst-mode timer and an adjustable comparator bias current.

The MCP1642BT-30I/MC is capable of replacing two or more discrete components, such as the main power MOSFET, the main current sense resistor and the magnetic components associated with a single-ended flyback converter. The device provides a current-mode control architecture for efficient operation across a wide load range. This is accomplished through a low-side current sense amplifier and an adjustable current-limit feature, preventing excessive load current.

The MCP1642BT-30I/MC also includes an adjustable soft-start, allowing users to smoothly increase the output voltage over time to minimize output voltage overshoot and minimize stress on the system. Additionally, the device features an adjustable synchronous rectification (SR) trigger, which can improve efficiency by adding an SR block to a device that does not typically include this feature.

Applications for the MCP1642BT-30I/MC DC-DC switching regulator IC include switched-mode power supplies, power converters, motor control, voltage-controlled oscillators and other general-purpose power applications. The device is available in a 6-pin SOT-23 package, with a maximum input voltage of 42 V and an output current of up to 30 mA.

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