MPC18730EP

Overview

The MPC18730EP is a Power Management IC (PMIC) designed for portable applications, regulating five independent output voltages from single-cell Li-Ion (2.7 V to 4.2 V), Ni-MH, or dry cell inputs (0.9 V to 2.2 V). It integrates two DC-DC converters and three low-dropout (LDO) linear regulators. Output voltages are programmable via a 3-wire serial interface. In Li-Ion systems, both DC-DC converters operate as buck regulators; in Ni-MH/dry cell systems, one acts as a boost and the other as a buck-boost regulator. DC-DC outputs range from 1.613 V to 3.2 V at up to 120 mA, and 0.805 V to 1.5 V at up to 100 mA.

Feature Summary

• Integrates two DC-DC converters and three LDO linear regulators for versatile power management.
• Configurable startup control system with multiple wakeup, sleep, standby, and reset modes to minimize power consumption.
• Supports flexible input sources including single-cell Li-Ion, Ni-MH, and alkaline batteries.
• Features four dedicated wake inputs for efficient system state transitions.

Applications

• Handheld mobile devices
• Portable consumer electronics
• Battery-powered equipment requiring low standby current

Procurement Notes

Verify the EP suffix confirms Pb-free packaging designation. Ensure compatibility with the 64-WFQFN (9x9 mm) surface-mount package requirements. Confirm that the design supports the required 3-wire serial interface protocol for voltage programming and mode configuration. Check operating temperature range specifications (-10°C to 65°C) against environmental constraints.

Selection Notes

Select this component when designing systems powered by single-cell batteries requiring multiple regulated rails. The choice depends on the need for integrated buck/boost/buck-boost capabilities alongside LDOs. Consider the serial interface complexity versus parallel resistor-setting alternatives. Evaluate the specific current demands of the load against the 120 mA and 100 mA DC-DC limits.

Part Context

Manufactured by Freescale Semiconductor (now NXP Semiconductors), this PMIC targets the handheld and mobile device market. It consolidates multiple power regulation functions into a single chip, reducing board space and component count compared to discrete solutions. The EP variant specifically denotes lead-free compliance for environmental standards.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pin-to-pin and functional compatibility with any alternative PMICs before implementation.

FAQ

How does the DC-DC converter configuration change based on the input source?

For single-cell Li-Ion inputs, both DC-DC converters are configured as buck (step-down) regulators. For single-cell Ni-MH or dry cell inputs, one converter operates as a boost (step-up) regulator and the other as a buck-boost regulator.

What interface is used to set the output voltages?

The output voltage for each of the five regulated outputs is set independently through a 3-wire serial interface.