AP2191DSG-13

Overview

The AP2191DSG-13 is a single-channel high-side USB power switch IC manufactured by Diodes Incorporated. It supports an input voltage range of 2.7 V to 5.5 V and delivers a continuous output current of 1.5 A with a maximum current limit of 2.1 A. The device features a typical on-resistance of 95 mΩ and a maximum on-resistance of 115 mΩ. Key protection mechanisms include fixed current limiting, over-temperature shutdown, reverse current blocking, and under-voltage lockout (UVLO). It operates within a temperature range of -40°C to +85°C and is housed in an SOIC-8 surface-mount package.

Feature Summary

• Integrates comprehensive fault protection including over-temperature shutdown, fixed current limiting, and reverse current blocking for robust load management.
• Provides low on-resistance to minimize power loss and heat generation during normal operation.
• Features a status flag output to indicate the operational state of the switch.
• Supports fast switching times with defined turn-on and turn-off delays for efficient power distribution control.

Applications

• USB 2.0 port power distribution and switching
• Peripheral device power management in computing systems
• Battery-powered equipment requiring protected power rails

Procurement Notes

Verify the specific suffix 'DSG-13' against the manufacturer's latest datasheet to confirm package type and tape-and-reel specifications. Ensure compatibility with the target PCB footprint for the SOIC-8 EP package. Confirm that the required operating voltage and current ratings align with the system design constraints before finalizing procurement orders.

Selection Notes

Select this component when a single-channel solution with integrated protection is required for USB applications. The 1.5 A rating suits standard peripheral loads, while the built-in thermal and current limits reduce external component count. Consider the SOIC-8 package for space-constrained designs compared to larger packages offered in the same product family.

Part Context

This part belongs to the AP2191 series of USB power switches from Diodes Incorporated. The series offers various channel counts and current ratings tailored for different power distribution needs. The AP2191 specifically targets single-channel applications requiring reliable switching and protection in consumer and industrial electronics.

FAQ

Does the AP2191DSG-13 support reverse current flow?

No, the device includes reverse current blocking protection to prevent backflow from the load to the source.

What is the maximum current limit for this switch?

The maximum current limit is specified as 2.1 A, which protects the circuit during overload conditions.