Semtech Corporation TS13001-QFNR

Overview

TS13001-QFNR from Semtech is a galvanic isolated 56V bi-directional power load switch with 110 mΩ typical R_DS(on), ±2 kV isolation, and single CLK-controlled operation. It integrates over-current shutdown (4.4–6.6 A), operates from 2.9–5.5 V, and targets high-reliability industrial power rail switching where isolation and fault protection are critical.

For engineers reviewing the TS13001-QFNR datasheet, pinout, applications, or equivalent options, key selection factors include its 20-pin QFN (4×4 mm) package, galvanic isolation between primary/secondary sides, bi-directional blocking capability, fast turn-off timing (4–10 µs), and latch-off behavior after over-current events.

Technical Context

The TS13001-QFNR implements a high-voltage FET switch with integrated charge-pump-driven gate control, enabling AC-coupled clock input (CLK) to drive isolated switching without external level shifters. Its digital control logic interprets CLK pulse sequences to initiate turn-on (≥3 pulses), fast turn-off (≥6 pulses), or detect incorrect sequencing.

Isolation is achieved via on-chip capacitive coupling (C_ISO = 680 pF recommended), separating VDD1/SRC (primary side) from VDD2/SUB (secondary side). Over-current detection uses internal current sensing with 25 µs deglitching and latched shutdown until CLK is held low and re-asserted.

Key Specifications

Pinout & Package

Packaged in a 20-pin QFN (4 mm × 4 mm, 0.5 mm pitch) with exposed thermal pad (PAD), the TS13001-QFNR uses dual ground domains (SRC and SUB) and dual switch output nodes (SW1, SW2) to support isolated bidirectional power path control.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar galvanic isolated power switch applications.

Compared with Si8261ACD-IS and ADUM6132BRIZ, the TS13001-QFNR uniquely integrates galvanic isolation, 56 V bi-directional switching, and self-contained over-current protection in one 4×4 mm QFN-reducing design effort, footprint, and validation scope for industrial and automotive load control.

Availability

TS13001-QFNR is available at Aetrix Electronics and suitable for industrial PLC I/O modules, HVAC solid-state relays, isolated power supply muxing, and automotive body control modules requiring stable component supply, long-term lifecycle assurance, and RoHS/REACH-compliant sourcing.

Supply support for TS13001-QFNR 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

Semtech Corporation is a U.S.-based fabless semiconductor company specializing in analog and mixed-signal ICs for precision sensing, power management, and signal integrity applications.

The TS13001-QFNR belongs to Semtech's Triune Products line of galvanically isolated power switches, designed specifically for replacing electromechanical relays and discrete high-voltage switch solutions in industrial automation and automotive subsystems.

FAQ

What is the maximum continuous current rating for the TS13001-QFNR?

The TS13001-QFNR has a typical over-current shutdown threshold of 5.5 A and a maximum specified value of 6.6 A at –10°C to +65°C. Its 110 mΩ typical R_DS(on) supports continuous conduction up to this level with appropriate PCB copper and thermal management. The device latches off during over-current events and requires CLK reset to resume operation.

Does the TS13001-QFNR require external isolation components?

No, the TS13001-QFNR provides on-chip galvanic isolation with ±2 kV rating between primary (SRC/VDD1) and secondary (SUB/VDD2) domains. External 680 pF (C_ISO) and 100 pF (C_DATA) AC-coupling capacitors are required, but no optocouplers, transformers, or isolated DC/DC converters are needed to achieve functional isolation.

How does the TS13001-QFNR handle over-current conditions?

Upon detecting output current exceeding the threshold (4.4–6.6 A), the TS13001-QFNR disables the switch and latches it OFF. The DATA pin toggles at F_CLK/4 to indicate fault status. Recovery requires holding CLK low, then re-applying the correct turn-on pulse sequence. This prevents thermal damage during sustained faults like motor stalls or shorted loads.

What is the purpose of the CPP pin on the TS13001-QFNR?

The CPP (Charge Pump Pin) on the TS13001-QFNR connects to a 100 pF capacitor that boosts internal gate drive voltage, enabling reliable switching even when CLK is driven from low-voltage microcontrollers (e.g., 3.0 V). Without CPP, minimum CLK voltage rises to 5.0 V; with CPP, operation down to 2.9 V is supported per datasheet specifications.

Can the TS13001-QFNR be used for AC load switching?

Yes, the TS13001-QFNR supports bi-directional blocking up to ±56 V, making it suitable for AC load switching such as 24 V AC solenoids or 120 V AC zero-crossing–independent control. Its bidirectional conduction path and galvanic isolation eliminate the need for back-to-back MOSFETs or external rectification, simplifying AC solid-state relay designs.