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).

• USB Multiplexing Switches
  • High-Speed USB on USB and UART Inputs
  • Negative Voltage Rail on Audio Inputs
  • Internal LDO for ID Detection and MIC Bias
  • Compatible with USB Charging Specification Rev. 1.1
  • DSS Input for Default Switch Connection
  • Low-Power MIC Standby Mode
• Linear Charge with Single Input
  • 28 OVP on VBUS Input
  • High-Current Mode for Production Test
  • Thermal Regulation
• Over-Voltage Protected LDO for USB Transceivers and PMU Wakeup
• UVLO (Undervoltage Lock Out)
• Interrupt Request to Reduce SW Polling
  • USB / ID Detection
  • SEND / END Button Detection
  • Mic Removal
  • OVLO / UVLO on VBUS
  • Charger Status
• Thermal Shutdown Protection
• I2C-compatible Serial Interface
• 25-Bump 0.4 mm Pitch Thin DSBGA Package

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• USB speed (Mbps)
• 480
• Number of channels (#)
• 2
• Supply voltage (Max) (V)
• 7
• Supply voltage (Min) (V)
• 2.5
• Ron (Typ) (Ohms)
• 2.5
• Input/ouput voltage (Min) (V)
• -2
• Input/ouput voltage (Max) (V)
• 7
• Configuration
• 3:1
• Features
• USB 2.0, UART, Audio Switch (Negative Rail Capability), BCv1.1 Charger Detection, Standby Mode, Integrated LDO, Thermal Regulation and Shutdown, Over-Voltage Tolerance (OVT), Undervoltage Lock Out (UVLO), I2C Interface
• Rating
• Catalog
• Operating temperature range (C)
• -40 to 85
• ICC (Max) (uA)
• 400
• ESD HBM (Typ) (kV)
• 2
• Bandwidth (MHz)
• 480

LP8727的完整型号有：LP8727TME-B/NOPB、LP8727TMX-B/NOPB，以下是这些产品的关键参数及官网采购报价：

LP8727TME-B/NOPB，工作温度：-40 to 85，封装：DSBGA (YFQ)-25，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SNAGCU，TI官网LP8727TME-B/NOPB的批量USD价格：.832（1000+）

LP8727TMX-B/NOPB，工作温度：-40 to 85，封装：DSBGA (YFQ)-25，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SNAGCU，TI官网LP8727TMX-B/NOPB的批量USD价格：.708（1000+）

LP8727SW-LINUX — 用于 LP8727 的 Linux 驱动程序

The Linux driver supports the LP8727 USB interface with integrated 28-V linear charger. The Linux driver supports communication through the I2C bus and interfaces with the power-supply subsystem.

Linux mainline status

Available in Linux Mainline: Yes
Available through git.ti.com: N/A

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