| 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 |
- 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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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).