TPS60243DGKTG4

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TPS60243DGKTG4 Application Field and Working Principle

TPS60243DGKTG4 is a device belonging to the PMIC (Power Management Integrated Circuit) category. It is a DC-DC switching regulator which converts input voltages into different regulated DC voltages that are internal to the device. The TPS60243DGKTG4 from Texas Instruments is a triple output high-precision, low-dropout regulator designed for powering high performance components in battery- operated systems.

Features and Benefits

• Three output voltage rails with individually adjustable output voltage
• No external compensation components required
• High efficiency switch-mode topology
• Low quiescent current in powered-down mode
• Programmable soft start
• Internal power MOSFET with current-limit and thermal-overload protection

Applications

• Portable Medical Equipment
• Cellular Phones and Wireless Devices
• Robotics
• GPS Systems
• Computer Systems
• Battery-Powered Systems

Working Principle of the TPS60243DGKTG4

The TPS60243DGKTG4 is a triple output low dropout voltage regulator. The dropout voltage of the device is exceptionally low, allowing it to maintain regulated output voltages even under conditions of low input voltage. The device includes an internal power MOSFET which provides output current limiting, short circuit protection, and thermal overload protection. The device also includes an internal compensation network, allowing it to be used with a wide variety of output capacitor values.

The device uses a switch-mode design, in which the output voltage is regulated by controlling the on and off times of the internal power MOSFET. The internal power MOSFET switches on and off at a constant frequency, depending on the required load current. When the switch is off, the output voltage is monitored by an internal comparator which adjusts the duty cycle of the switch. This creates a cyclic on-off state, in which the output voltage is regulated.

The device also includes a soft start feature which limits inrush current at startup. After the initial startup, the device operates in continuous conduction mode. The internal power MOSFET also has current-limit and thermal-overload protection, ensuring a safe operation of the device.

Conclusion

The TPS60243DGKTG4 is a high-precision triple output low dropout voltage regulator. It is ideally suited for powering high performance components in battery-operated systems, such as portable medical equipment, cellular phones and wireless devices, robotics, GPS systems, computer systems, and other battery-powered systems. The device features no-external compensating components and a low quiescent current in powered-down mode. It is designed for operation in continuous switching mode, with a wide range of output capacitor values and an adjustable output voltage.

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