Diodes Incorporated
V QFN4040 17

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24V/5A 1-Ch Power Switch With Fast Role Swap

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The DPS1135 is part of a family of power switches optimized for the USB Power Delivery and other hot-swap applications. Through the analog interface, exception status is reported and several functions can be programmed: current limit, overvoltage protection, and output voltage ramping up. The fast role swap function which complies with the requirements defined in the USB Power Delivery Specification Release 3.0, V1.0a is implemented.

This device is designed to operate between 4.5V and 24V. It offers fast short-circuit response time to ensure system robustness. The integrated port-discharge function allows the voltage levels at the input and output ports to be discharged to meet the requirements of the USB Power Delivery Specification. Comprehensive fault detection and recovery mechanisms are provisioned to enable applications which are subjected to heavy capacitive loads and the risk of short circuit. These mechanisms include: reverse voltage and current blocking, input overvoltage protection, output overcurrent, short-circuit protection and overtemperature shut-down. In addition, the rise time of output voltage can be adjusted to minimize in-rush current and to ensure system stability. Before any exception condition is notified via the low-active FAULTB signal, deglitch of 7ms is applied to prevent false triggering.

The DPS1135 is housed in the low-profile and space-saving V-QFN4040-17 package which is manufactured with environmental-friendly material.


  • Wide Operating Voltage Range: 4.5V to 24V
  • One-Channel Power Switch With Integrated Adjustable Current & Voltage Limits
  • Ability to Discharge the Input and Output Ports either Individually or Simultaneously via Two External Control Pins 
  • Fast Short-Circuit Response Time at 2µs
  • Comprehensive Built-in Fault Detection and Recovery Mechanisms like Input Undervoltage Lock-out, Reverse Voltage & Current Blocking, Thermal Shutdown, Overcurrent and Short-Circuit Protection
  • RDS(ON) of Embedded MOSFET at 30mΩ
  • Adjustable DV/DT Control at Start-up
  • Fault Reporting (FAULTB) with Blanking Time at 7ms Typical
  • Fast Role Swap Supported
  • Totally Lead-Free & Fully RoHS Compliant
  • Halogen and Antimony Free. “Green” Device


  • Notebook, Desktop, and AIO PCs, Servers, and Tablets
  • Docking Stations, Universal and Multimedia Hubs
  • FPTVs, PC Monitors
  • Set-Top-Boxes, Residential Gateways, Storage Devices
  • Power Protection in Industrial and Automotive Applications

Product Specifications

Product Parameters

Type Load Switch
AEC Qualified No
Compliance (Only Automotive supports PPAP) Standard
Maximum Continuous Output Current (A) 5
(MAX) Maximum Current Limit Fixed (A) Adjustable
Adjustable Current Limit Yes
Channels 1
Enable Logic Active High
Minimum Operating Voltage (V) 0
Maximum Operating Voltage (V) 24
Quiescent Current Typ (µA) 1500
RDS(ON) (VIN = 5V) Typ (mΩ) 29
Reverse Current Block Yes
Minimum Power Supply Voltage (V) 4
Maximum Power Supply Voltage (V) 24
Output Discharge Yes
(TYP) Output Rise Time mS Adjustable
OCP Output Latch Off No
OCP Flag Yes
Power Good No
Operating Ambient Temperature Range (°C) -40 to 125
Overtemperature Protection Yes
UL Certificate Yes

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