Diodes Incorporated AP91352MN1-DT8-7

Overview

AP91352MN1-DT8-7 from Diodes Incorporated is a 5V bidirectional eFuse with integrated Isofet, fixed 2.5A current limit, 50mΩ typical R_DS(ON), and 13ms slew rate control. It provides reverse current detection, UVLO (4.0V typ), OVP (6.25V max), and thermal shutdown at +150°C for SSD power rails and motherboard load management.

For engineers reviewing the AP91352MN1-DT8-7 datasheet, AP91352MN1-DT8-7 pinout, AP91352MN1-DT8-7 application, or AP91352MN1-DT8-7 equivalent, this device delivers precise overcurrent response (5.5–40μs), tri-state EN/FAULT fault signaling, SAS-disable with 2.1V logic threshold, and latch-off reset via VOUT < VCC, UVLO, or EN/FAULT toggle - critical for high-reliability storage and computing power domains.

Technical Context

The AP91352 implements a self-protected, resettable electronic fuse architecture with integrated N-channel Isofet that latches off upon reverse current detection (>1A, 5–10μs response). Its internal charge pump enables gate drive from 3.6–12V VCC while maintaining 300μA quiescent current in enabled state.

Control logic includes a tri-state EN/FAULT pin (0.35–0.8V low, 0.9–1.95V mid-fault, 2.1–3.3V high) and ESD-hardened SAS pin (2kV HBM, 1kV CDM) that forces shutdown when >2.1V. Slew rate control is active only after UVLO rising threshold is met and EN = high.

Key Specifications

Pinout & Package

AP91352MN1-DT8-7 uses a thermally efficient W-QFN3020-12 package (2.0 × 3.0 mm, 0.75 mm height) with exposed thermal pad (Pin 13) and RoHS-compliant lead-free finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NIS5135MNTAG and AP22653WM-7, the AP91352MN1-DT8-7 uniquely integrates SAS-disable, reverse current latch-off with multi-mode reset, and tri-state EN/FAULT - making it the only option among the three qualified for high-integrity SSD and motherboard power domains requiring bidirectional fault containment.

Availability

AP91352MN1-DT8-7 is available at Aetrix Electronics and suitable for solid-state drive (SSD) power management, motherboard VRM load isolation, and printer fan distribution requiring stable component supply, consistent parametric performance, and long-term lifecycle support.

Supply support for AP91352MN1-DT8-7 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for computing and industrial markets.

The AP91352 belongs to Diodes' eFuse portfolio designed specifically for high-density storage and computing platforms requiring bidirectional current control, fast fault response, and integrated reverse-blocking capability without external components.

FAQ

What is the minimum VCC voltage required to enable the AP91352MN1-DT8-7?

The AP91352MN1-DT8-7 requires VCC ≥ 3.6V to operate, with under-voltage lockout releasing at 4.0V (typical). Below 3.6V, the device remains in high-impedance shutdown; operation is guaranteed only between 3.6V and 12V per datasheet specifications. The UVLO hysteresis is 0.3V, ensuring stable turn-on/turn-off behavior during supply ramp-up or brown-out.

How does the EN/FAULT pin indicate thermal shutdown?

During thermal shutdown, the EN/FAULT pin transitions from its normal high (2.1–3.3V) or low (0.35–0.8V) state to an intermediate voltage of 0.9–1.95V. This mid-level signal is actively driven by internal circuitry and can be monitored by an external microcontroller or used to trigger simultaneous shutdown of linked eFuses - no external pull-up is permitted due to internal biasing.

Can the AP91352MN1-DT8-7 be reset after reverse current latch-off without cycling power?

Yes. Reverse current latch-off can be cleared without power cycling by any of three methods: (1) allowing VOUT to fall below VCC by ≥100mV (typ), (2) toggling the EN/FAULT pin from high to low and back to high, or (3) driving the SAS pin high then low. All methods restore normal operation after the 13ms slew-rate-controlled startup sequence.

What is the maximum continuous current the AP91352MN1-DT8-7 can deliver at +85°C ambient?

At +85°C ambient with 0.5 square inch of 2oz copper on FR-4 PCB, the AP91352MN1-DT8-7 supports 2A continuous output current (per Recommended Operating Conditions). At +25°C, it sustains 2.5A; derating occurs due to thermal resistance (40°C/W) and increased R_DS(ON) (95mΩ typ at +80°C), limiting safe conduction before thermal shutdown.