PMIC - Voltage Reference

I. Introduction

The MAX6350CPA is an integrated low-dropout (LDO) voltage regulator that features a low operating current and low quiescent (Iq) current, making it ideal for applications that require ultra-low power over extended operating condition. With its low noise and good line regulation, the MAX6350CPA makes it ideal for applications requiring ultra-low power performance. In addition to its low power consumption and low on-resistance, this voltage regulator has very low temperature coefficient, making it an ideal choice for high-speed digital applications. Moreover, it includes a shutdown mode, allowing for ultra-low current consumption and truly zero stand-by power usage.

II. Application Field

• Ultra-low power consumption, low noise and fast transient response for digital circuits
• Battery powered devices
• Portable devices requiring a low quiescent current regulator
• High-speed microcontrollers
• Sensor and imaging systems

III. Working Principle

The MAX6350CPA is a one-time-programmable (OTP) low dropout (LDO) voltage regulator designed to work on an input voltage range of 2.0V to 6.5V, and to operate at an output voltage range of 0.7V to 5.0V. The device has a typical operating current of 0.75mA with a shutdown current of 0.0003mA, and provides a low dropout voltage of 0.15V, low noise and good line regulation. It has a maximum output current up to 200mA, and dual current limit thresholds. These parameters make the MAX6350CPA suitable for applications that require a ultra-low power consumption, fast transient response and low quiescent current.

The device has an internal OTP memory to provide a full-featured process with the required settings. The OTP memory stores the settings for the voltage regulator, operating temperature range, output current, low-power/shutdown mode, status flags, and a fault-detection circuit. This memory can only be programmed once and is non-volatile, so the settings remain intact when the power is cycled.

In order to save power and reduce quiescent current, the device also offers a wide range of low-power modes. These modes can reduce the operating current of the voltage regulator by shutting down the output stage or disabling other operating blocks at pre-defined voltage thresholds. This ensures that the device can operate at less than 1V, and is suited for very low-power applications.

The MAX6350CPA also includes a unique fault-detection circuit, which provides a warning signal when an overload is detected. This circuit can also detect an over-current, over-temperature, or output voltage transgression, allowing the device to be reliably used in a wide range of applications.

IV. Conclusion

The MAX6350CPA is an integrated low-dropout (LDO) voltage regulator that combines low operating current and low quiescent current to achieve ultra-low power performance in applications requiring a low-power, high-speed voltage regulator. It is ideal for use in battery powered and portable devices, high-speed microcontrollers, and sensor and imaging systems. The device also features a wide range of low-power modes, an internal one-time-programmable (OTP) memory, and an integrated fault-detection circuit.