AP22653FDZ-7

Overview

The AP22653FDZ-7 is a single-channel, high-side power switch IC manufactured by Diodes Incorporated. It features an N-channel MOSFET with a maximum continuous output current of 1.5 A and a peak current capability of 2.1 A. The device operates within a supply voltage range of 3 V to 5.5 V and utilizes a SOT-26 (A1 type) surface-mount package. Key electrical parameters include a typical on-resistance of 55 mΩ at 5 V input and a quiescent current of 120 µA. The component supports programmable current limiting from 125 mA to 1735 mA via an external resistor, offering ±7% accuracy at higher thresholds.

Feature Summary

• Features precision programmable current limiting with adjustable thresholds ranging from 125 mA to 1735 mA for optimized protection in heavy load or short-circuit conditions.
• Provides comprehensive fault protection including overcurrent, thermal shutdown, short-circuit protection, and reverse current blocking without requiring external components.
• Incorporates controlled rise and fall times to minimize current surges during switching events, alongside a fast 5 µs typical short-circuit response time.

Applications

• USB port power distribution and protection
• Peripheral circuitry power switching in consumer electronics
• Battery-powered devices requiring precise current management

Procurement Notes

Verify the specific suffix 'FDZ' against the manufacturer's official datasheet to confirm exact packaging and tape-and-reel specifications. Ensure the selected variant matches the required operating temperature range and pinout configuration for your PCB layout. Cross-reference the ordering information with authorized distributors to confirm availability and compliance with RoHS standards before finalizing procurement plans.

Selection Notes

Select this component when design requirements demand precise current regulation rather than fixed limits. The programmable threshold allows customization for specific load profiles, while the low on-resistance ensures minimal power loss. Consider the SOT-26 footprint constraints and the need for an external resistor for current setting when integrating this part into the system architecture.

Part Context

The AP22653 series belongs to Diodes Incorporated's portfolio of intelligent load switches designed for power distribution applications. This family offers high-side switching capabilities with integrated protection features. The AP22653 variant specifically targets applications needing adjustable current limits, distinguishing it from fixed-limit counterparts within the broader product line.

Replacement Considerations

Consult the manufacturer's cross-reference guide for verified substitutes. Potential alternatives may include other single-channel high-side switches with similar voltage ratings and current capabilities, provided they match the SOT-26 package and functional requirements.

FAQ

How is the current limit threshold determined?

The current limit is set by connecting an external resistor between the RLIM pin and ground. The threshold is programmable from 125 mA to 1735 mA, with ±7% accuracy at higher settings.

Does the device support reverse current flow?

Yes, the AP22653 provides reverse current blocking when disabled and reverse current limiting when enabled, protecting the source from backflow.