MAX1634CAI+

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PMIC - Voltage Regulators - DC DC Switching Controllers

The MAX1634CAI+ is a compact, ultra-low power, and extremely adjustable DC-DC switching controller for microprocessor and direct current-fed systems. The device is ideal for applications that require frequent power cycling of the system or for low power processor applications. This controller provides the ability to adjust for different application conditions such as load current, lead resistance, and output voltage setpoints.

The device utilizes a high current peak-modulated switching scheme to provide accurate low voltage outputs at low cost and minimal complexity. It is also capable of operating with a wide range of input voltages and is optimized to operate as a low input voltage power supply controller.

The device also incorporates an active charge pump that maximizes the system efficiency. This charge pump is designed to increase the duty cycle of the switching system, which improves the overall system efficiency by reducing the power dissipation of the external MOSFET switches.

The MAX1634CAI+ comes with a user configurable PWM frequency of up to 1 MHz. It features adjustable soft-start, adjustable output voltage, and ±7.5 A external current-sense range. Additionally, the device is capable of operating in an open loop or closed loop voltage mode and can be used for a wide variety of applications including microprocessor and direct current-fed systems.

The MAX1634CAI+ offers an integrated temperature-controlled switching function, which allows the user to select either high or low temperature switching. This feature reduces power dissipation and therefore improves the overall efficiency of the system. The device also includes an integrated voltage regulation circuit, which provides high-precision voltage regulation accuracy.

The MAX1634CAI+ also provides an adjustable voltage-based power up/down sequencer and features various overload protections, including brown-out, short circuit protection, and overvoltage protection. There is also an advanced tracking mode protection, which ensures the outputs are scalable but also maintains voltage stability.

In terms of control features, the MAX1634CAI+ supports wide input voltage range and has a programmable output voltage range of 0.5V to 5.5V. It also provides an adjustable adjustable output voltage offset, adjustable output voltage trim and an adjustable soft-start. Additionally, the frequency of the PWM can be adjusted or synchronized to an external clock.

The device also offers a load balance current control function, which allows the user to select the current sharing between multiple outputs. This ensures that the system load does not experience any overloading of the output voltage and eliminates any over current problem in parallel output applications.

In summary, the MAX1634CAI+ is a compact and extremely adjustable DC-DC switching controller for microprocessor and direct current-fed systems. It offers adjustable soft-start, adjustable output voltage, and ±7.5 A external current-sense range; wide input voltage range and a programmable output voltage range of 0.5V to 5.5V; and integrated voltage regulation circuit and an adjustable voltage-based power up/down sequencer. The device also features an integrated temperature-controlled switching function and advanced tracking mode protection, that provide high-precision voltage regulation accuracy and improved power efficiency.

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