Texas Instruments TPD1S514-3YZR

Overview

TPD1S514-3YZR from Texas Instruments is a single-chip USB VBUS overvoltage, surge, and ESD protection IC for 12-V charging rails. It integrates a precision 13.75-V ±1% OVP threshold, 39-mΩ nFET switch, dedicated VBUS_POWER pin (regulated to 4.95 V at 3 mA), ±15-kV IEC 61000-4-2 ESD protection, and 100-V IEC 61000-4-5 surge immunity - deployed in smartphones and tablets to safeguard PMICs and battery chargers during fast-charging events.

For engineers reviewing the TPD1S514-3YZR datasheet, TPD1S514-3YZR pinout, TPD1S514-3YZR application, or TPD1S514-3YZR equivalent, key selection criteria include its 13.75-V OVP trip accuracy, 100-ns OVP response time, WCSP-12 package footprint (1.29 mm × 1.99 mm), thermal shutdown at 145°C, and VBUS_POWER regulation under dead-battery conditions.

Technical Context

The TPD1S514-3YZR implements a bidirectional nFET switch with 39-mΩ R_ON to support both host and charging modes while isolating system-side circuitry during overvoltage. Its internal oscillator and charge-pump circuit enforce a 20-ms startup delay and 3.5-ms soft-start ramp to meet USB inrush current compliance.

OVP detection uses a precision bandgap reference with <±1% tolerance and 100-mV hysteresis; upon exceeding 13.75 V on VBUS_CON, the nFET disables within 100 ns. A dedicated LDO supplies VBUS_POWER at 4.95 V/3 mA, enabling system boot from external chargers when the battery is depleted.

Key Specifications

Pinout & Package

TPD1S514-3YZR uses a 12-pin WCSP (Wafer Chip Scale Package) with 0.4-mm pitch and nominal body size of 1.29 mm × 1.99 mm. The package is optimized for space-constrained mobile PCB layouts and supports solder reflow per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB VBUS protection applications.

Compared with TPD1S514-2YZR and TPD1S514YZR, the TPD1S514-3YZR uniquely supports 12-V charging with precise 13.75-V OVP and 4.95-V VBUS_POWER - making it the only variant qualified for USB PD 3.0 PPS and Qualcomm Quick Charge 4+ 12-V profiles.

Availability

TPD1S514-3YZR is available at Aetrix Electronics and suitable for smartphone fast-charging interfaces, tablet OTG power delivery, and portable media player 12-V charging systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for TPD1S514-3YZR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and power management technologies, with leadership in high-reliability protection ICs for mobile and industrial applications.

The TPD1S514 family is designed specifically for USB VBUS line protection in space-constrained portable devices, integrating OVP, ESD, surge, and power-rail conditioning into a single WCSP package.

FAQ

What is the exact overvoltage protection threshold for TPD1S514-3YZR?

The TPD1S514-3YZR has a precision overvoltage protection (OVP) threshold of 13.75 V typical, with ±1% tolerance (13.5 V minimum, 14 V maximum). This value is factory-trimmed and specified at 25°C, ensuring reliable protection for 12-V USB PD and Quick Charge 4+ charging rails without false triggering.

How does TPD1S514-3YZR handle dead-battery system boot?

The TPD1S514-3YZR supports dead-battery boot via its VBUS_POWER pin, which delivers a regulated 4.95 V at up to 3 mA directly from VBUS_CON. When EN is held low, the nFET remains ON (provided VBUS_CON stays between 3.5 V and 13.5 V), allowing external 12-V power to initialize the PMIC and system logic before battery charging begins.

What is the response time of TPD1S514-3YZR during an overvoltage event?

The TPD1S514-3YZR responds to overvoltage on the VBUS_CON pin within 100 ns, turning off the internal nFET to isolate VBUS_SYS. This ultra-fast reaction prevents voltage overshoot beyond the 14-V maximum OVP threshold, even during 100-V IEC 61000-4-5 surge events with 8/20-µs waveform.

Does TPD1S514-3YZR require external components for ESD or surge protection?

No. The TPD1S514-3YZR integrates ±15-kV IEC 61000-4-2 ESD protection and 100-V IEC 61000-4-5 surge immunity on the VBUS_CON pin, eliminating the need for external TVS diodes or discrete clamps. Only decoupling capacitors (1 µF on VBUS_POWER, 2.2 µF on VBUS_SYS) are required per the datasheet layout guidelines.

What package type and dimensions does TPD1S514-3YZR use?

TPD1S514-3YZR uses a 12-pin WCSP (Wafer Chip Scale Package) with nominal dimensions of 1.29 mm × 1.99 mm and 0.4-mm ball pitch. The package features four GND balls (A4, B4, C1, C4) for low-impedance ESD/surge return and is qualified for reflow per JEDEC J-STD-020 moisture sensitivity level 1.