Qorvo ACT88760-104SR

Overview

ACT88760-104SR from Qorvo is a highly integrated power loss protection IC featuring bi-directional eFuse (6A), 36V synchronous buck regulator, and programmable boost storage controller. It delivers autonomous backup power during input failure with undetectable transition, supports supercapacitor/electrolytic/tantalum storage, and includes ADC-based health monitoring for early capacitor degradation detection - deployed in enterprise SSDs requiring <5ms failover and data-safe shutdown.

For engineers reviewing the ACT88760-104SR datasheet, pinout, applications, or equivalent options, key selection criteria include its 2.7–18V input range, 5–36V programmable storage voltage, I²C-configurable current limits (1–10A), thermal alert/shutdown thresholds (120°C/145°C), and FCQFN5×5-28 package compatibility with high-density PCB layouts.

Technical Context

The ACT88760-104SR implements a dual-path power architecture: back-to-back eFuse FETs (17mΩ typical) enable bidirectional isolation between VIN and VOUT, while independent boost (STR) and buck (VOUT) converters manage energy transfer to/from storage capacitors. Its state machine autonomously transitions among UV/POR, SOFT-START, NORMAL, HEALTH CHECK, and SUPPLEMENT modes without host intervention.

Control is delivered via I²C interface (7-bit address 0x5A default) with non-volatile register configuration for storage voltage (BSET), current limit (ISET), switching frequency (320–1130kHz), EN UV/OV thresholds, and health check timing. All critical signals - VIN, VOUT, STR, eFuse current, die temperature - are monitored by an integrated 8-bit ADC with ±0.5 LSB total error.

Key Specifications

Pinout & Package

ACT88760-104SR is housed in a thermally enhanced FCQFN5×5-28 package with exposed thermal pad (PGND-connected). The 28-pin layout supports high-current routing (VIN/VOUT/STR/SW), precision analog sensing (FB, REF, BSET, ISET), and digital control (SCL, SDA, nIRQ, PLI).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX20333AWE+T and TPS65988DHAR, ACT88760-104SR uniquely integrates bidirectional eFuse, high-voltage boost storage, and autonomous health-aware failover - making it the only solution qualified for mission-critical SSD and industrial backup where capacitor lifetime prediction and sub-microsecond response are mandatory.

Availability

ACT88760-104SR is available at Aetrix Electronics and suitable for enterprise solid-state drives, industrial programmable logic controllers, and ruggedized edge computing nodes requiring stable component supply across multi-year production cycles.

Supply support for ACT88760-104SR 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

Qorvo is a U.S.-based semiconductor company specializing in RF, power management, and motion sensor solutions for infrastructure, defense, and industrial markets.

The ACT88760-104SR belongs to Qorvo's ACT Power Loss Protection product line, engineered specifically for high-reliability data retention and uninterrupted operation in storage and automation systems facing unpredictable power interruptions.

FAQ

What is the maximum storage capacitor voltage supported by the ACT88760-104SR?

The ACT88760-104SR supports a programmable storage voltage range from 5V to 36V via the BSET pin. Its STR pin has an absolute maximum rating of 40V, allowing safe operation with common 35V-rated electrolytic or 25V supercapacitor banks. This range enables optimal sizing of storage elements for target runtime and physical footprint - for example, 27V storage yields ~3× longer hold-up than 12V at equal capacitance.

Does the ACT88760-104SR require external MOSFETs for eFuse functionality?

No, the ACT88760-104SR integrates back-to-back eFuse FETs with 17mΩ typical on-resistance - eliminating need for external discrete MOSFETs. These internal FETs provide bidirectional isolation between VIN and VOUT, support 6A continuous current, and feature cycle-by-cycle overcurrent protection with 10µs deglitch. External components are limited to passive filtering (VIN/VOUT/STR decoupling caps) and programming resistors (ISET, BSET, EN divider).

How does the ACT88760-104SR detect storage capacitor degradation?

The ACT88760-104SR performs autonomous health checks every 4 minutes using its integrated current sink and ADC. It applies a known current pulse to the STR node, measures resulting voltage decay, and calculates effective series resistance (ESR). When ESR exceeds programmable threshold or stored energy falls below minimum required for backup runtime, it asserts nIRQ and logs fault status via I²C register 0x0E. This enables predictive maintenance before unexpected failure.

Can the ACT88760-104SR operate without I²C communication?

Yes, the ACT88760-104SR operates fully autonomously without I²C. Default CMI configuration sets all critical parameters - storage voltage, current limits, UV/OV thresholds, and health check interval - at power-on. I²C is optional for runtime reconfiguration (e.g., dynamic current limit adjustment), telemetry readout, or fault diagnostics. All safety-critical functions - PLI assertion, eFuse shutdown, thermal protection - remain active and deterministic in standalone mode.

What is the purpose of the HSB pin on the ACT88760-104SR?

The HSB (High-Side Bias) pin supplies gate drive voltage to the internal high-side MOSFET in the buck converter. It must be connected to the SW node via a 47nF ceramic capacitor to form a bootstrap circuit - enabling efficient 100% duty-cycle operation and minimizing conduction losses. Incorrect HSB capacitor placement or value causes buck regulation failure, excessive SW node ringing, or thermal shutdown due to insufficient high-side drive.