TPS60301DGSRG4

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TPS60301DGSRG4 is a single-output, step-down DC-DC switching voltage regulator which includes more features than what is usually found in such switching regulators. The regulator supports multiple output voltages and a wide input voltage range of 2.2V to 5.5V, making it ideal for portable applications powered from single- or two-cell Li-ion batteries or other power sources.
Due to its high integration, TPS60301DGSRG4 boosts system performance and saves board space. It helps reduce bill of materials and simplifies the power system design. Other advantages of the regulator include low quiescent current, fast transient response, and fast fault recovery.

Application Field:
TPS60301DGSRG4 is ideal for applications that require moderate output current such as portable digital devices, digital audio players, PDAs, cellphones and other hand-held equipment. The regulator is also suitable for other general-purpose applications with input and output voltages of up to 5.5V and 3.3V, respectively.

Working Principle:
The TPS60301DGSRG4 is a DC-DC switching regulator that works by charging an external storage capacitor at each switching cycle according to the load demand. A fast-response voltage feedback loop compensates for output voltage changes due to line or load variations. The regulator operates in an infinite-pulse-frequency-modulated (PFM) mode at light load and constant-on-time (COT) control loop at heavy load.The device starts operating from either a soft-start pin or an enable pin depending on which is active. Regulated output voltage is available immediately after the enable pin is active and the output voltage is adjusted through the output voltage adjust pin.

The TPS60301DGSRG4 is an integrated solution that includes an internally compensated operational amplifier to optimize the feedback loop stability and system performance. The device also features frequency modulation to facilitate lower output voltage ripple, reduce switching noise and enable the device to enter low power states.

In addition, the device features an over-current protection circuit that monitors the output current of the regulator and limits it to a safe operating level. The device also includes a thermal shutdown circuit that initiates thermal shutdown when the junction temperature of the regulator exceeds the rated value.

The device also features a power good indicator which indicates when the output voltage is within the specified or unstressed range. The power good indicator is used to monitor the status of the regulator and provide protection to external components from over-voltage or under-voltage situations.

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