TC1303B-AD0EMFTR

Overview

The TC1303B-AD0EMFTR is a dual-output power management IC manufactured by Microchip Technology. It integrates a 500 mA synchronous buck regulator and a 300 mA low-dropout (LDO) regulator within a single package. The device operates with an input voltage range of 2.7 V to 5.5 V. The synchronous buck converter supports a fixed switching frequency of 2.0 MHz under heavy load conditions and features automatic transition from pulse width modulation (PWM) to pulse frequency modulation (PFM) modes for improved light-load efficiency. The LDO output provides independent shutdown control. Both regulators are internally compensated, and the device includes a power-good output signal with a 300 ms delay.

Feature Summary

• Integrates a 500 mA synchronous buck regulator and a 300 mA low-dropout regulator in a single component
• Features automatic transition between PWM and PFM modes to optimize efficiency across varying load conditions
• Provides independent shutdown controls for both the buck and LDO outputs to manage power consumption
• Includes a power-good output indicator with a specified delay time for system monitoring

Applications

• Portable consumer electronics requiring efficient dual-rail power distribution
• Battery-powered devices utilizing synchronous rectification for extended runtime
• Embedded systems needing independent regulation and shutdown capabilities for subsystems
• Applications requiring low noise and high efficiency in compact form factors

Procurement Notes

Verify the specific suffix AD0EMFTR against official Microchip documentation to confirm the exact output voltage configuration and tape-and-reel specifications. Ensure compatibility with RoHS standards and check for any lead-free compliance requirements relevant to your manufacturing process. Cross-reference the datasheet for thermal performance characteristics and recommended external component values to ensure proper implementation.

Selection Notes

Select this component when a compact solution is needed for generating two distinct regulated voltages from a single input source. The integrated synchronous buck offers higher efficiency compared to traditional linear regulators, particularly at higher currents. Consider the internal compensation and fixed switching frequency if minimizing external passive components is a priority. Verify that the required output voltages match the standard fixed options or adjustable range supported by the specific variant.

Part Context

This part belongs to the TC1303 family of dual-output regulators from Microchip Technology. The family typically includes variants like TC1303A, TC1303C, and TC1304, which share similar architectural features but may differ in output current ratings, packaging, or specific electrical characteristics. The TC1303 series is designed for applications requiring space-constrained power management with high efficiency.

Replacement Considerations

Direct substitutes within the same family include TC1303A, TC1303C, and TC1304, provided their electrical parameters and pinouts are compatible. Other Microchip dual-output regulators should be evaluated based on input voltage range, output current capabilities, and package dimensions to ensure functional equivalence.