Overview
The TPD1S514-1YZR from Texas Instruments is a single-chip protection solution designed for USB charger overvoltage, surge, and ESD protection. This device is part of the TPD1S514 family, which offers comprehensive protection for USB VBUS lines and other power buses. It ensures safe current flow in both charging and host modes, protecting internal system circuits from overvoltage conditions. The TPD1S514-1YZR is particularly suited for applications in cell phones, tablets, eBooks, and portable media players.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 12-DSBGA (2x2.5) |
| Operating Temperature Range | -40°C to 85°C |
| VBUS_CON Supply Voltage Range | 3.5 V to 5.9 V |
| Over Voltage Protection (OVP) | Up to 30 V DC |
| ESD Protection | IEC 61000-4-5 surge events up to 100 V |
| nFET Switch On Resistance (R_ON) | 39 mΩ |
| VBUS_POWER Output Voltage | Up to 4.95 V at 3 mA |
| UVLO Threshold | Typical: 3.1 V, Maximum: 3.5 V |
| Current Supply | 210 µA |
Key Features
- Precision OVP with < ±1% tolerance
- Low R_ON nFET switch supporting host and charging modes
- Dedicated VBUS_POWER pin for flexible power supply
- Internal oscillator and charge pump for soft start and delay control
- Ultra-fast response time to overvoltage conditions (less than 100 ns)
- Thermal shutdown protection
- ESD protection and surge protection up to 100 V
Applications
- Cell Phones
- Tablets
- eBooks
- Portable Media Players
- USB 2.0/3.0 interfaces
- Systems using 5-V, 9-V, or 12-V power rails
Q & A
- What is the primary function of the TPD1S514-1YZR?
The primary function is to provide overvoltage, surge, and ESD protection for USB VBUS lines and other power buses. - What is the operating temperature range of the TPD1S514-1YZR?
The operating temperature range is -40°C to 85°C. - What is the maximum overvoltage protection provided by the TPD1S514-1YZR?
The device provides overvoltage protection up to 30 V DC. - What is the typical output voltage of the VBUS_POWER pin?
The typical output voltage of the VBUS_POWER pin is up to 4.95 V at 3 mA. - How does the device handle ESD events?
The device is designed to handle IEC 61000-4-5 surge events up to 100 V. - What is the on-resistance of the nFET switch?
The on-resistance of the nFET switch is 39 mΩ. - What is the UVLO threshold for the TPD1S514-1YZR?
The typical UVLO threshold is 3.1 V, with a maximum of 3.5 V. - How does the device protect against thermal issues?
The device includes an over-temperature protection circuit that shuts down the device if the junction temperature exceeds the absolute maximum rating. - What is the purpose of the internal oscillator and charge pump?
The internal oscillator and charge pump control the soft start and delay for turning on the nFET switch. - Can the TPD1S514-1YZR power the system when the battery is discharged?
Yes, the VBUS_POWER pin can supply power to the system from an external charger when the battery is discharged.
