LP8727 Series

Micro - Mini USB Interface with Integrated 28V Linear Charger

Catalog(1 parts)

Part	Supplier Device Package	Package / Case	Applications	Interface	Mounting Type
Texas Instruments LP8727TMX-B/NOPB MP3 Players, Portable Media Players Interface 25-DSBGA	25-DSBGA	25-WFBGA, DSBGA	MP3 Players, Portable Media Players	Micro-USB	Surface Mount

Key Features

• USB Multiplexing SwitchesHigh-Speed USB on USB and UART InputsNegative Voltage Rail on Audio InputsInternal LDO for ID Detection and MIC BiasCompatible with USB Charging Specification Rev. 1.1DSS Input for Default Switch ConnectionLow-Power MIC Standby ModeLinear Charge with Single Input28 OVP on VBUS InputHigh-Current Mode for Production TestThermal RegulationOver-Voltage Protected LDO for USB Transceivers and PMU WakeupUVLO (Undervoltage Lock Out)Interrupt Request to Reduce SW PollingUSB / ID DetectionSEND / END Button DetectionMic RemovalOVLO / UVLO on VBUSCharger StatusThermal Shutdown ProtectionI2C-compatible Serial Interface25-Bump 0.4 mm Pitch Thin DSBGA PackageAll trademarks are the property of their respective owners.USB Multiplexing SwitchesHigh-Speed USB on USB and UART InputsNegative Voltage Rail on Audio InputsInternal LDO for ID Detection and MIC BiasCompatible with USB Charging Specification Rev. 1.1DSS Input for Default Switch ConnectionLow-Power MIC Standby ModeLinear Charge with Single Input28 OVP on VBUS InputHigh-Current Mode for Production TestThermal RegulationOver-Voltage Protected LDO for USB Transceivers and PMU WakeupUVLO (Undervoltage Lock Out)Interrupt Request to Reduce SW PollingUSB / ID DetectionSEND / END Button DetectionMic RemovalOVLO / UVLO on VBUSCharger StatusThermal Shutdown ProtectionI2C-compatible Serial Interface25-Bump 0.4 mm Pitch Thin DSBGA PackageAll trademarks are the property of their respective owners.

Description

The LP8727 is designed to provide automatic multiplexing switches between Micro/Mini USB connector and USB, UART and Audio paths in cellular phone applications. It also contains a single-input Li-Ion battery charger and an overvoltage-protected LDO. Programming is handled via an I2C-compatible Serial Interface allowing control of charger, multiplexing switches, and reading status information of the device. The multiplexing switches on USB and UART support high-speed USB, and Audio inputs can be driven to negative voltage rail. The LP8727 is compatible with USB charging specifications rev 1.1 from USB IF. The Li-Ion charger requires few external components and integrates the power FET. Charging is thermally regulated to obtain the most efficient charging rate for a given ambient temperature. It has Overvoltage Protection (OVP) circuit at the charger input protects the PMU from input voltages up to +28V, eliminating the need for any external protection circuitry. An overvoltage-protected LDO which can supply up to 50 mA is designed for powering up a low-voltage USB transceiver or waking up a PMU (Power Management Unit) when an external power source (either USB VBUS or wall adapter) is connected to the USB connector. The LP8727 PMU is available in 25-bump 0.4 mm pitch thin DSBGA package (2.015 mm x 2.015 mm). The LP8727 is designed to provide automatic multiplexing switches between Micro/Mini USB connector and USB, UART and Audio paths in cellular phone applications. It also contains a single-input Li-Ion battery charger and an overvoltage-protected LDO. Programming is handled via an I2C-compatible Serial Interface allowing control of charger, multiplexing switches, and reading status information of the device. The multiplexing switches on USB and UART support high-speed USB, and Audio inputs can be driven to negative voltage rail. The LP8727 is compatible with USB charging specifications rev 1.1 from USB IF. The Li-Ion charger requires few external components and integrates the power FET. Charging is thermally regulated to obtain the most efficient charging rate for a given ambient temperature. It has Overvoltage Protection (OVP) circuit at the charger input protects the PMU from input voltages up to +28V, eliminating the need for any external protection circuitry. An overvoltage-protected LDO which can supply up to 50 mA is designed for powering up a low-voltage USB transceiver or waking up a PMU (Power Management Unit) when an external power source (either USB VBUS or wall adapter) is connected to the USB connector. The LP8727 PMU is available in 25-bump 0.4 mm pitch thin DSBGA package (2.015 mm x 2.015 mm).