TC1313-RD1EMF

Overview

The TC1313-RD1EMF is a dual-output power management IC from Microchip Technology, featuring a 500 mA synchronous buck regulator and a 300 mA low-dropout regulator (LDO). It operates within an input voltage range of 2.7 V to 5.5 V, with a nominal rating of 3.6 V. The device utilizes current-mode control and pulse width modulation for the buck converter, supporting a fixed switching frequency of 2.4 MHz maximum. It is housed in a 10-pin DFN package measuring 3 x 3 mm with a height of 0.90 mm. The LDO output is fixed at 1.2 V.

Feature Summary

• Integrates a 500 mA synchronous buck regulator and a 300 mA LDO in a single compact package.
• Provides independent shutdown capabilities for both the buck and LDO outputs to optimize system power consumption.
• Features automatic transition between PWM and PFM modes to maintain high efficiency across varying load conditions.
• Includes internal compensation for both outputs, simplifying external component selection and layout.

Applications

• Portable consumer electronics requiring efficient multi-rail power distribution
• Battery-powered devices needing extended operational time through low quiescent current
• Embedded systems utilizing standard logic voltage levels alongside adjustable rails

Procurement Notes

Verify the specific suffix RD1EMF against official Microchip documentation to confirm the fixed 1.2 V LDO output voltage. Ensure the ordering part number matches the required tape-and-reel packaging format if applicable. Cross-reference the 10-pin DFN-10 package dimensions with PCB footprint specifications prior to procurement to ensure mechanical compatibility.

Selection Notes

Select this component when a combined solution for a high-current buck converter and a secondary LDO rail is required. It is suitable for designs where space constraints favor a single 10-pin package over discrete components. Consider the 2.7 V minimum input voltage for battery applications and verify that the 500 mA buck current rating meets the peak load requirements of the primary circuit.

Part Context

This part belongs to the TC1313 family of dual-output regulators designed by Microchip Technology. The family offers various configurations distinguished by suffix codes that define the LDO output voltage. The TC1313 series is engineered for applications demanding high efficiency and low noise, combining synchronous rectification with LDO regulation in a small form factor.

Replacement Considerations

Other variants within the TC1313 family may serve as functional substitutes if different LDO output voltages are acceptable. Verify pin-to-pin compatibility and thermal characteristics before substitution. Consult the official datasheet for the complete list of available output voltage options within the same package type.

FAQ

What is the fixed output voltage of the LDO section in the TC1313-RD1EMF?

The LDO section provides a fixed output voltage of 1.2 V.

Does the TC1313-RD1EMF support independent control of its outputs?

Yes, the device features independent shutdown pins for both the buck regulator and the LDO, allowing separate control of each output.