MAX1694EUB+T

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Widely recognized as one of the leading suppliers in Power management, Texas Instruments Inc. produces a large number of power management products tailored to customers’ needs. Among them is the MAX1694EUB+T, which is an integrated inductor-based switch-mode power supply (SMPS). This device is classified as a PMIC – a power distribution switch, load drivers, which provides a fault tolerant high side switch for jobs such as battery power management, LED lighting and DC-DC converters.

The MAX1694EUB+T integrates a 1A high-side power switch and a 10mA low-side linear programmer into a single package, providing over-temperature protection and current limit protection to ensure safety against over-current draw. It comes with an incredibly wide voltage compliance range of 2.7V to 5.5V, making it suitable for a variety of power management applications. The high-side switch features a fast on-time of 25ns for high performance, a low 0.4 ohm resistance and can provide up to 1.5A continuous output. The low-side linear programmer has a settle time of 8us, a low 0.38 ohm resistance and can provide up to 10mA continuous output.

The MAX1694EUB+T also features various protection features and flexibility. The device features current limit protection and short circuit protection to prevent overloading, thermal shutdown protection to prevent overheating, and a reverse power diode to prevent reverse current flow. The device also includes internal compensation designs, an adjustable UVLO, configurable dead time with minimum dead time, and configurable switching frequency which can be adjusted to switch as fast as 7MHz to minimize noise in your device.

When using the MAX1694EUB+T, the power switch is activated when the voltage across the voltage applied to the gate is greater than the built in VBB voltage threshold. The voltage applied to the gate can be adjusted using the internal compensation pins to set the desired current limit in the power stage. When the current limit is reached, the power switch shuts off and the low side linear programmer is activated to provide additional current until the device is in a safe operating range. Once the current is back within the safe range, the power switch is activated again.

In terms of working principle, the MAX1694EUB+T works by regulating the output voltage or current. When the output voltage or current is greater than the one set by the internal compensation pins, the integrated power switch is turned off until the output voltage or current falls within the desired range. It then turns on the integrated power switch to maintain the desired output voltage or current. As such, the device is ideal for applications where accuracy and response time are important, such as voltage and current stabilizers, load sharing and power supply sequencing.

Moreover, the MAX1694EUB+T is also appropriate for use in a wide range of application fields. It can be applied in industrial applications, telecommunications power systems, high power computing systems, medical equipment, remote communication systems and solar power systems. All of these applications will benefit from the device’s power efficiency and easy current-limit setting.

In conclusion, the MAX1694EUB+T is an excellent example of a PMIC power distribution switch, load drivers from Texas Instruments. Its wide voltage compliance range and many protection features make it suitable for a variety of applications in various application fields, and its internal compensation pins make it easy to set the desired output voltage or current for improved accuracy and response time. With features that make it fault-tolerant and power-efficient, the MAX1694EUB+T is a great choice for designers looking for a reliable, high-performance integrated power switch.

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