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Diodes Incorporated ZXRD060AFK-7
- Part No.:
- ZXRD060AFK-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Voltage Reference
- Package:
- 10-UFDFN Exposed Pad
- Datasheet:
-
ZXRD060AFK-7.pdf
- Description:
- IC VREF SHUNT ADJ 0.5% 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,647
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Product details
Overview
ZXRD060AFK-7 from Diodes Incorporated is a dual adjustable precision shunt regulator with 0.6V reference voltage, ±0.5% initial tolerance, and separate input/output pins enabling isolated DC-DC feedback control down to 0.2V output. It operates from 2V–18V input, delivers up to 15mA per channel, and features open-collector outputs for optocoupler-based regulation in POL converters and microprocessor core voltage rails.
For engineers reviewing the ZXRD060AFK-7 datasheet, ZXRD060AFK-7 pinout, ZXRD060AFK-7 application, or ZXRD060AFK-7 equivalent, this device supports low-voltage shunt regulation in isolated power supplies, dual-rail monitoring, and precision feedback loops where 0.6V reference stability, <6mV temperature drift (–40°C to 125°C), and high PSRR (>45dB at 300kHz) are critical.
Technical Context
The ZXRD060AFK-7 integrates two independent shunt regulator channels, each comparing FB1/FB2 to a trimmed 0.6V bandgap reference via high-gain transconductance amplifiers (G = 5000 mA/V). Its dual-input architecture (IN1/IN2) allows independent powering of each channel-enabling operation where master rail voltage exceeds auxiliary supply.
Each channel features open-collector output (OUT1/OUT2) with ≤0.4Ω dynamic impedance, leakage <0.1µA at 125°C, and FB pin bias current as low as –45nA. The device maintains regulation across 0.2V–18V output range and rejects supply ripple with >45dB PSRR at 300kHz, supporting stable feedback in noisy switching environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VFB (Typ) | 0.6V - precise internal reference enabling accurate 0.2V–18V adjustable output via external resistor dividers |
| VFB Tolerance | ±0.5% at 25°C - ensures tight output voltage accuracy without calibration in core voltage and POL applications |
| IOUT Max | 15mA per channel - sufficient sink current to drive standard optocoupler LEDs and maintain loop stability |
| PSRR | >45dB at 300kHz - suppresses switching noise from upstream DC-DC converters in isolated feedback paths |
| TJ Range | –40°C to +150°C - supports operation in industrial and automotive under-hood environments |
| ZOUT | 0.4Ω typical - low dynamic output impedance ensures fast transient response during load steps |
| Supply Range | 2V to 18V - enables use from auxiliary rails while regulating higher or lower master rails |
Pinout & Package
Package: DFN2626P10 (2.6mm × 2.6mm, 0.65mm pitch, 10-pin, exposed thermal pad).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PGND1 | Power ground 1 | Emitter return path for OUT1 transistor; must be tied to GND and PGND2 for low-noise current sinking |
| 2 OUT1 | Open-collector output 1 | Sinks up to 15mA to regulate VOUT1 via external divider; compatible with optocoupler anode connection |
| 3 GND | Analog ground | Reference and amplifier ground; requires low-impedance tie to PGND1/PGND2 to minimize offset error |
| 4 PGND2 | Power ground 2 | Emitter return path for OUT2 transistor; shares common ground node with PGND1 and GND |
| 5 OUT2 | Open-collector output 2 | Independent sink output for dual-rail regulation; electrically isolated from OUT1 except through shared ground |
| 6 FB2 | Feedback input 2 | Compares external divider voltage to 0.6V reference; regulates VOUT2 when VFB2 > 0.6V |
| 7 IN2 | Supply input 2 | Power source for channel 2 amplifier and reference; decoupled with 0.1µF ceramic capacitor to GND |
| 8 FB1 | Feedback input 1 | Regulates VOUT1 by comparing divider voltage to same 0.6V reference; matched tracking with FB2 |
| 9 N/C | No connection | Unbonded die pad; must remain floating or grounded per layout guidelines to avoid parasitic coupling |
| 10 IN1 | Supply input 1 | Independent power for channel 1; enables asymmetric supply configuration (e.g., IN1 = 3.3V, IN2 = 12V) |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent shunt regulators | Two fully isolated 0.6V reference channels with separate IN/OUT/FB pins enable simultaneous regulation of two non-referenced rails |
| Ultra-low reference voltage | 0.6V nominal VFB supports direct regulation of sub-1V core voltages (e.g., FPGA/ASIC PLD rails) without level-shifting circuitry |
| High accuracy over temperature | ±0.5% initial tolerance and <12mV total drift (–40°C to +125°C) ensure stable output without trimming in wide-temperature applications |
| Optocoupler-optimized output | Open-collector outputs with 20mA absolute max rating and <0.4Ω ZOUT drive standard PC817/PC847 optocouplers reliably across full temperature range |
| Low quiescent current | 0.35–1.5mA total input current (depending on VIN and IOUT) minimizes auxiliary rail loading in isolated flyback and forward converters |
Applications
| Isolated Flyback Converter Feedback | Dual-Core Voltage Regulation |
|---|---|
|
Use Scenario: Secondary-side voltage sensing in AC/DC flyback supplies using optocoupler isolation. IC Role / Device Role / Timing Role: Dual-channel shunt regulator providing precise 0.6V reference for FB1/FB2, sinking optocoupler LED current to close primary-side PWM loop. Use Value: Enables <±1% output regulation across line/load/temperature with no secondary-side LDO required-reducing BOM count and board space. |
Use Scenario: Independent voltage monitoring and regulation of CPU and GPU core rails in embedded computing platforms. IC Role / Device Role / Timing Role: Two independent shunt regulators (OUT1/FB1 and OUT2/FB2) each controlling a dedicated DC-DC converter's feedback node. Use Value: Eliminates need for two discrete TL431s; matched VFB tracking (<2mV inter-channel drift) ensures consistent rail margining and sequencing. |
| Low-Voltage POL Converter Reference | Industrial PLC Power Monitoring |
|
Use Scenario: Point-of-load regulation of 0.8V FPGA core voltage in telecom baseband cards. IC Role / Device Role / Timing Role: Shunt regulator referenced to 0.6V FB pin, configured with external resistors to set 0.8V output; OUT1 sinks current to maintain regulation. Use Value: Supports 0.2V minimum output-critical for next-gen sub-1V digital loads-without requiring external op-amps or level shifters. |
Use Scenario: Redundant voltage supervision in programmable logic controller (PLC) backplane power modules. IC Role / Device Role / Timing Role: Dual-channel device monitors both +5V and +3.3V system rails simultaneously; each FB pin connected to respective divider network. Use Value: Single-package dual monitoring reduces footprint vs. discrete solutions and improves long-term drift matching between rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual shunt regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431ACDBVR | Single-channel, 2.495V reference, ±1% tolerance, no dual-output capability | Requires two devices plus external resistors to approximate dual regulation; lacks integrated dual-FB architecture | Select when cost sensitivity outweighs layout simplicity and inter-channel matching requirements |
| ZXRD100LFT1 | Dual-channel, 1.0V reference, ±1% tolerance, same DFN2626P10 package but higher VFB | Not suitable for sub-1V rails; limited to ≥1.0V outputs without additional level-shifting circuitry | Select only for applications requiring 1.0V reference and where tighter 0.6V accuracy is unnecessary |
Compared with TL431ACDBVR and ZXRD100LFT1, the ZXRD060AFK-7 uniquely delivers matched dual 0.6V references in one package-enabling compact, drift-matched regulation of ultra-low-voltage rails without external components or accuracy compromises.
Availability
ZXRD060AFK-7 is available at Aetrix Electronics and suitable for isolated power supply feedback, dual-core voltage regulation, and low-voltage POL converter applications requiring stable component supply, traceable sourcing, and long-lifecycle support.
Supply support for ZXRD060AFK-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-performance power management, signal integrity, and protection solutions for industrial, computing, and communications markets.
The ZXRD060AFK-7 belongs to Diodes' precision shunt regulator product line, designed specifically for isolated DC-DC feedback, dual-rail monitoring, and sub-1V core voltage regulation in space-constrained, high-reliability systems.
FAQ
Can ZXRD060AFK-7 regulate output voltages below 0.6V?
No. The device regulates based on comparison of FB voltage to its internal 0.6V reference. Output voltage is set by external resistor divider such that VOUT = 0.6V × (1 + R1/R2); minimum practical VOUT is 0.2V due to OUT saturation voltage and layout constraints-not because the reference is adjustable below 0.6V.
What is the maximum allowable voltage difference between IN1 and IN2?
No differential rating is specified. Each input (IN1, IN2) is rated for 2V–18V relative to GND. The device supports independent powering-e.g., IN1 = 3.3V, IN2 = 12V-as long as both remain within absolute maximum ratings and share common GND/PGND nodes per datasheet layout guidance.
How does the ZXRD060AFK-7 handle output short-circuit conditions?
Each OUT pin is internally current-limited to 20mA absolute maximum (per Absolute Maximum Ratings). Under sustained short-circuit, the device enters thermal shutdown if junction temperature exceeds 150°C. Continuous operation at 15mA per channel is safe within recommended operating conditions and proper PCB thermal design.
Is the N/C pin (Pin 9) required to be grounded?
No. Pin 9 is unconnected on-die and must remain floating unless specific layout guidelines require grounding for EMI suppression. Diodes' datasheet states it may be left floating or tied to GND-no electrical function is assigned, and grounding is optional for mechanical or shielding purposes only.
ZXRD060AFK-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 10-UFDFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Reference Type:
- Shunt, Dual
- Output Type:
- Adjustable
- Voltage - Output (Min/Fixed):
- 0.2V
- Voltage - Output (Max):
- 18 V
- Current - Output:
- 15 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- -
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 300 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- U-DFN2626-10
ZXRD060AFK-7 FAQ
1.How can I place an order for ZXRD060AFK-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXRD060AFK-7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ZXRD060AFK-7 reliable?
The price and inventory of ZXRD060AFK-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXRD060AFK-7 is usually 5 days.
3.What payment methods are accepted for ZXRD060AFK-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXRD060AFK-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXRD060AFK-7?
ZXRD060AFK-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXRD060AFK-7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ZXRD060AFK-7?
For technical support, including ZXRD060AFK-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXRD060AFK-7 requirements.
6.How does Aetrix verify that ZXRD060AFK-7 is sourced from the original manufacturer or authorized distributors?
All ZXRD060AFK-7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ZXRD060AFK-7 meets industry standards.
7.What is the process for return or replacement of ZXRD060AFK-7?
All ZXRD060AFK-7 units undergo pre-shipment inspection (PSI). If there is an issue with ZXRD060AFK-7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ZXRD060AFK-7 part is unused and in its original packaging.
Return procedure for ZXRD060AFK-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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