TC1303B-ZP0EMF

Overview

The TC1303B-ZP0EMF is a dual-output power management integrated circuit manufactured by Microchip Technology. It integrates a 500 mA synchronous buck regulator and a 300 mA low-dropout (LDO) linear regulator within a single package. The device operates with an input voltage range of 2.7 V to 5.5 V, featuring a typical quiescent current of 65 µA. The synchronous buck converter utilizes a fixed 2.0 MHz switching frequency under heavy loads and supports automatic transition from PWM to PFM modes for improved light-load efficiency. The component is housed in a 10-pin DFN-10 package measuring 3 mm x 3 mm.

Feature Summary

• Dual-output architecture combining a high-current synchronous buck regulator with a dedicated LDO for simultaneous power rail generation.
• Integrated power-good output signal that provides system status indication with a specified delay timer.
• Independent shutdown control pins allow separate disabling of the buck and LDO outputs to minimize standby power consumption.
• Internal compensation circuits eliminate the need for external error amplifier components for both regulator outputs.

Applications

• Portable electronic devices requiring multiple regulated voltage rails from a single battery source
• Embedded systems utilizing microcontrollers or application processors with distinct core and I/O voltage requirements
• Battery-powered consumer electronics prioritizing extended operational life through efficient power conversion

Procurement Notes

Verify the specific suffix code against official Microchip documentation to confirm the exact output voltage configuration and package variant. Ensure compatibility with RoHS and REACH regulations as indicated in the datasheet. Confirm lead-free status and moisture sensitivity level ratings prior to assembly planning.

Selection Notes

Select this component when a compact solution is required to generate two independent voltage rails from a single input source. Consider the internal compensation features if minimizing external component count is a priority. Evaluate the 2.0 MHz switching frequency against electromagnetic interference constraints and inductor size requirements.

Part Context

This part belongs to the TC1303 family of dual-output regulators. Variations within the series typically differ by output voltage settings, package type, or thermal characteristics. The 'B' designation indicates specific electrical parameters defined in the product specification. Consult the master datasheet for the complete family comparison table.

Replacement Considerations

Direct replacements include other members of the TC1303/TC1304 family such as TC1303A, TC1303C, or TC1304 variants. Verify pin-to-pin compatibility and ensure the substitute part matches the required output voltage and package dimensions before substitution.