USB Charger Overvoltage Surge and ESD Protection

USB Charger Overvoltage Surge and ESD Protection - TPD1S514


The TPD1S514 Family consists of single-chip protection solutions for 5-V, 9-V or 12-V USB VBUS lines, or other power buses. The bidirectional nFET switch ensures safe current flow in both charging and host mode while protecting the internal system circuits from any over voltage condition at the VBUS_CON pin. On the VBUS_CON pin, this device can handle over voltage protection up to 30-V DC. After the EN pin toggles low, any device in the TPD1S514 Family waits 20 ms before turning ON the nFET through a soft start delay.

Typical application interfaces for the TPD1S514 Family are VBUS lines in USB connectors typically found in cell phones, tablets, eBooks, and portable media players. The TPD1S514 Family can also be applied to any system using an interface for a 5-V, 9-V, or 12-V power rail.


  • Over Voltage Protection at VBUS_CON
    up to 30-V DC
  • Precision OVP ( < ± 1% Tolerance)
  • Low RON nFET Switch Supports Host and Charging Mode
  • Dedicated VBUS_POWER Pin Offers Flexible Power up Options Under Dead Battery Condition
  • Transient Protection for VBUS Line:
    • IEC 61000-4-2 Contact Discharge ±15 kV
    • IEC 61000-4-2 Air Gap Discharge ±15 kV
    • IEC 61000-4-5 Open Circuit Voltage 100 V
      • Precision Clamp Circuit Limits the VBUS_SYS Voltage < VOVP
  • USB Inrush Current Compliant
  • Thermal Shutdown (TSD) Feature

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Parametrics Compare all products in Application-Specific Port Protection

IO Capacitance (Typ) (pF)
Breakdown Voltage (Min) (V)
IEC 61000-4-2 Contact (+/- kV)
IEC 61000-4-2 Air-Gap (+/- kV)
IO Leakage Current (Max) (nA)
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
Dynamic Resistance (Typ) (Ω)
Clamping Voltage (V)
TPD1S514 TPD1S414 TPD4S014 TPD4S214
    1.5    2   
6    6    6    6   
15    15    15    15   
15    15    15    15   
USB 2.0
USB 3.0   
USB 2.0
USB 3.0   
USB 2.0    USB 2.0   
Over Voltage Protection
Surge Protection   
Over Voltage Protection
Surge Protection   
Over Voltage Protection    Current Limit
Over Voltage Protection   
Uni-Directional    Uni-Directional    Uni-Directional    Uni-Directional   
  1000    1000    100   
Catalog    Catalog    Catalog    Catalog   
-40 to 85    -40 to 85    -40 to 85    -40 to 85   
    WSON    DSBGA   
    See datasheet (WSON)    See datasheet (DSBGA)   
    1    1   
8      15    9