Diodes Incorporated ZXRD060FK-7

Overview

ZXRD060FK-7 from Diodes Incorporated is a dual adjustable precision shunt regulator with 0.6V reference voltage, ±1% initial tolerance, 10-pin DFN2626P10 package, and open-collector outputs capable of sinking up to 15mA per channel. It operates from 2V to 18V input, regulates output voltages as low as 0.2V, and is designed for isolated DC-DC feedback loops using optocouplers in POL converters for microprocessor/DSP/PLD core voltage regulation.

For engineers reviewing the ZXRD060FK-7 datasheet, ZXRD060FK-7 pinout, ZXRD060FK-7 application, or ZXRD060FK-7 equivalent, key selection criteria include dual-channel 0.6V reference accuracy, independent IN/FB/OUT pin separation for isolated feedback design, low-voltage operation down to 0.2V, and thermal performance in DFN2626P10 at 152°C/W θJA.

Technical Context

The ZXRD060FK-7 integrates two independent shunt regulator channels, each with a precision 0.6V bandgap reference, high-gain transconductance amplifier (5000 mA/V), and open-collector NPN output stage. Each channel compares FB voltage to internal reference and sinks current up to 15mA when FB exceeds VFB.

It supports wide-range operation: input voltage 2V–18V, output voltage 0.2V–18V, and ambient temperature –40°C to +125°C. Its separate power ground (PGND1/PGND2) and analog ground (GND) pins minimize noise coupling between power and reference paths, critical for stable optocoupler-based feedback in isolated supplies.

Key Specifications

Pinout & Package

Package: 10-pin DFN2626P10 (2.6mm × 2.6mm, 0.5mm pitch, exposed thermal pad).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual shunt regulator applications.

Compared with TLC660CDR and ZXRE060E5TA, the ZXRD060FK-7 uniquely delivers dual 0.6V shunt regulation with separated ground paths and full 0.2V–18V output range-enabling compact, noise-immune isolated feedback designs impossible with single-channel alternatives.

Availability

ZXRD060FK-7 is available at Aetrix Electronics and suitable for isolated DC-DC converters, multi-rail POL systems, FPGA core voltage regulation, and low-voltage DSP power management requiring stable component supply and guaranteed long-term sourcing.

Supply support for ZXRD060FK-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 industrial, computing, and communications markets.

The ZXRD060 belongs to Diodes' precision shunt regulator product line, engineered specifically for optocoupler-coupled isolated power supplies and low-voltage point-of-load regulation where dual-channel accuracy and ground separation are critical.

FAQ

What is the maximum sink current per channel on ZXRD060FK-7?

The ZXRD060FK-7 supports up to 15mA sink current per channel (OUT1 and OUT2) across the full operating temperature range of –40°C to +125°C, as confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables of DS35359 Rev. 4. This rating applies with V_OUT ≥ 0.2V and is limited by thermal dissipation in the DFN2626P10 package.

Can ZXRD060FK-7 regulate output voltages below 0.6V?

No - the ZXRD060FK-7 cannot regulate below 0.6V because its internal reference voltage is fixed at 0.6V. However, it can regulate output rails as low as 0.2V using an external resistor divider that scales the output down to match the 0.6V FB threshold, as shown in Figures 3–6 of DS35359 Rev. 4.

Why does ZXRD060FK-7 have separate PGND1, PGND2, and GND pins?

Separate PGND1/PGND2 and GND pins isolate high-current emitter return paths (for OUT1/OUT2 transistors) from the low-noise analog reference and amplifier ground. This prevents switching noise from coupling into the feedback comparator, ensuring stable regulation in optocoupler-based isolated supplies - a key differentiator versus single-ground shunt regulators.

Is ZXRD060FK-7 RoHS and halogen-free compliant?

Yes - ZXRD060FK-7 is lead-free and fully RoHS-compliant per Diodes Incorporated's "Green" policy, and is also halogen-free (Br & Cl < 900 ppm, total halogens < 1500 ppm), as documented in the product marking notes and compliance statements in DS35359 Rev. 4 and Diodes' official website.