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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Reference

Diodes Incorporated ZXRE160AET5TA

Name: ZXRE160AET5TA
Brand: Diodes Incorporated
SKU: ZXRE160AET5TA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZXRE160AET5TA

Manufacturer:: Diodes Incorporated

Category:: Voltage Reference

Package:: SOT-23-5 Thin, TSOT-23-5

Datasheet:: ZXRE160AET5TA.pdf

Description:: IC VREF SHUNT ADJ 0.5% TSOT25

Quantity:: RFQ Add To RFQ list

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Inventory:4,905

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Product details

Overview

ZXRE160AET5TA from Diodes Incorporated is a 5-terminal adjustable precision shunt regulator with 0.6V feedback reference voltage, ±0.5% initial tolerance at +25°C, -40°C to +125°C operating range, 0.2V–18V open-collector output capability, and optimized for isolated DC-DC converters and microprocessor core voltage POL regulation.

For engineers reviewing the ZXRE160AET5TA datasheet, ZXRE160AET5TA pinout, ZXRE160AET5TA application, or ZXRE160AET5TA equivalent, key selection criteria include low-voltage feedback accuracy, thermal drift performance (<6 mV over -40°C to +85°C), open-collector output compliance down to 0.2V, and compatibility with opto-coupled feedback loops in isolated power supplies.

Technical Context

The ZXRE160AET5TA implements a high-accuracy bandgap-referenced amplifier driving an open-collector NPN output transistor, with separate PGND and GND pins enabling precise current-sinking control independent of input rail grounding. Its 0.6V FB threshold allows direct regulation of sub-1V rails without level-shifting circuitry.

It operates as a comparator-mode controller when V_FB exceeds 0.6V (sinking up to 15mA), supports external resistor divider programming for output voltages ≥0.6V, and maintains stability across 0.2V–18V output range with dynamic output impedance ≤0.6Ω over full temperature range.

Key Specifications

Parameter	Value and Actual Design Meaning
V_FB (Ref)	0.597–0.603 V at +25°C: Enables direct regulation of 0.6V core rails without external scaling.
Initial Tolerance	±0.5% at +25°C (ZXRE160A grade): Ensures tight output voltage accuracy in POL converters.
Temp Drift	<6 mV (-40°C to +85°C): Maintains <±0.6% output error over industrial temperature range.
V_OUT Range	0.2 V to 18 V: Supports ultra-low dropout operation and wide-range opto-isolated feedback.
I_OUT Max	15 mA: Sinks sufficient current to drive standard optocoupler LEDs or bias external pass transistors.
PSRR	>45 dB at 300 kHz: Rejects high-frequency noise on input rail, critical for clean feedback in switching regulators.
Z_OUT	0.25–0.6 Ω (f < 1 kHz): Provides low-impedance reference node for stable loop compensation.

Pinout & Package

TSOT25 (SOT-25-5) package: 2.9 mm × 1.6 mm × 0.8 mm, 5-pin surface-mount, exposed flag (floating or GND-connected).

Pin/Terminal	Circuit Role	Design Meaning
PGND (Pin 1)	Power Ground	Emitter return path for output transistor; must be tied to system GND for proper current sinking.
N/C (Pin 2)	No Connection	Internally unconnected; leave floating per datasheet.
IN (Pin 3)	Supply Input	Provides bias to internal reference and amplifier; requires local 0.1 µF ceramic decoupling to GND.
FB (Pin 4)	Feedback Input	Compares external resistor-divider voltage to 0.6V reference; determines output conduction state.
GND (Pin 5)	Analog Ground	Reference and amplifier ground return; must be tied to PGND for accurate regulation.

Key Features

Feature	Design Value
0.6V reference voltage	Enables direct regulation of modern sub-1V processor cores without resistive scaling or error amplification.
Separate PGND/GND pins	Eliminates ground-loop errors in isolated feedback paths and improves PSRR by separating power and analog returns.
0.2V–18V output compliance	Allows use with low-V_CE(sat) optocouplers and enables series LDO configurations where output rail is below input supply.
High PSRR (>45 dB @ 300 kHz)	Rejects switching noise from adjacent DC-DC stages, preserving feedback integrity in dense power layouts.
Low dynamic output impedance (≤0.6 Ω)	Supports fast transient response and stable compensation with small output capacitors (0.1–10 µF).

Applications

Isolated DC-DC Converters

Microprocessor Core POL Regulators

Use Scenario: Secondary-side voltage regulation in flyback or forward converters using optocoupler feedback.

IC Role / Device Role / Timing Role: Shunt regulator providing precise 0.6V reference to optocoupler LED anode, closing feedback loop across isolation barrier.

Use Value: Enables regulation of 0.6V–1.2V output rails with <±0.6% total error over -40°C to +125°C, eliminating need for secondary-side LDO.

Use Scenario: Point-of-load regulation for FPGA, DSP, or ASIC core supplies requiring tight voltage tolerance.

IC Role / Device Role / Timing Role: Adjustable shunt reference controlling external PMOS/NPN pass element in low-dropout linear regulator configuration.

Use Value: Achieves <10 mV load/line regulation and <6 mV thermal drift, meeting JEDEC JESD8-12B core voltage spec for advanced logic devices.

Low-Voltage LDOs

Supply Monitoring & Overvoltage Protection

Use Scenario: Ultra-low dropout linear regulator for battery-powered systems with 0.8V–1.5V input-to-output differentials.

IC Role / Device Role / Timing Role: Precision feedback element in series-pass topology, setting output via external R1/R2 divider while sinking base/gate current.

Use Value: Delivers stable 0.6V–5V outputs with dropout as low as 200mV, supporting energy-efficient operation in portable electronics.

Use Scenario: Threshold detection for 12V/15V auxiliary rails in telecom or industrial power systems.

IC Role / Device Role / Timing Role: Comparator-mode controller triggering LED indicator or shutdown signal when monitored voltage exceeds programmed threshold.

Use Value: Provides hysteresis-free monitoring with <1% threshold accuracy and <10 µA FB bias current, minimizing sensing error.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLVH431AIDBVR	2.5V fixed reference; no 0.6V option; higher V_REF tolerance (±0.5% at 2.5V); lower I_OUT max (100mA vs 15mA sink)	Requires resistor scaling for sub-1V regulation; unsuitable for direct 0.6V core rail control	Select only if 2.5V reference suffices and higher output current is needed.
ZXRE060AET5TA	Same 0.6V reference but 3-pin SC70 package; no separate PGND/GND; no IN pin - powered directly from OUT node	Limited to non-isolated shunt topologies; cannot support opto-isolated feedback or series LDO configurations	Select only for space-constrained, single-rail shunt applications without isolation or low-dropout requirements.

Compared with TLVH431AIDBVR and ZXRE060AET5TA, the ZXRE160AET5TA uniquely combines 0.6V reference, 5-pin isolation-ready pinout, and 0.2V output compliance - making it the only choice for precision 0.6V regulation in opto-isolated POL and ultra-low-dropout linear regulators.

Availability

ZXRE160AET5TA is available at Aetrix Electronics and suitable for isolated DC-DC converters, microprocessor core POL regulators, and low-voltage LDO designs requiring stable component supply, tight voltage tolerance, and extended temperature operation.

Supply support for ZXRE160AET5TA 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 consumer markets.

The ZXRE product line delivers precision shunt and series voltage references engineered specifically for high-accuracy, low-voltage regulation in isolated and point-of-load power architectures.

FAQ

What is the minimum output voltage the ZXRE160AET5TA can regulate?

The ZXRE160AET5TA regulates down to 0.6V using its internal 0.6V feedback reference. With external resistor dividers, it sets output voltages ≥0.6V - e.g., 0.6V (direct), 1.0V (R1/R2 = 2/3), or 1.2V (R1/R2 = 1/1). It cannot regulate below 0.6V as no internal scaling or trimming is provided.

Can the ZXRE160AET5TA be used in opto-isolated feedback without external components?

Yes - the ZXRE160AET5TA is designed for direct opto-isolated use: its 0.2V–18V output compliance drives standard optocoupler LEDs (e.g., PC817, SFH615A) without series resistors when V_OUT ≥ 1.2V. For lower V_OUT, a current-limiting resistor is required per LED forward voltage and desired LED current (typically 1–5 mA).

How does the separate PGND and GND improve performance in isolated designs?

Separating PGND (power ground for output transistor emitter) from GND (analog ground for reference and amplifier) eliminates ground-bounce coupling between high-current switching paths and sensitive reference circuitry. This preserves feedback accuracy in noisy environments and improves PSRR by >10 dB compared to single-ground shunt regulators like the TL431.

What is the maximum recommended output capacitor for stability in shunt regulator mode?

The datasheet specifies C2 (compensation capacitor from OUT to GND) between 0.1 µF and 10 µF depending on application. For most isolated DC-DC converters, 2.2 µF ceramic is optimal - ensuring phase margin >45° across 0.6V–6V outputs. Larger values (>10 µF) risk instability due to zero placement; smaller values (<0.1 µF) reduce transient immunity.

ZXRE160AET5TA Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Package/Case:: SOT-23-5 Thin, TSOT-23-5

Series:: -

Packaging:: Tape & Reel (TR)

Product Status:: Active

Reference Type:: Shunt

Output Type:: Adjustable

Voltage - Output (Min/Fixed):: 0.6V

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:: 1 mA

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TSOT-25

ZXRE160AET5TA FAQ

1.How can I place an order for ZXRE160AET5TA through Aetrix?

Please submit a Request for Quotation (RFQ) for ZXRE160AET5TA 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 ZXRE160AET5TA reliable?

The price and inventory of ZXRE160AET5TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXRE160AET5TA is usually 5 days.

3.What payment methods are accepted for ZXRE160AET5TA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXRE160AET5TA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZXRE160AET5TA?

ZXRE160AET5TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZXRE160AET5TA 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 ZXRE160AET5TA?

For technical support, including ZXRE160AET5TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXRE160AET5TA requirements.

6.How does Aetrix verify that ZXRE160AET5TA is sourced from the original manufacturer or authorized distributors?

All ZXRE160AET5TA 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 ZXRE160AET5TA meets industry standards.

7.What is the process for return or replacement of ZXRE160AET5TA?

All ZXRE160AET5TA units undergo pre-shipment inspection (PSI). If there is an issue with ZXRE160AET5TA, 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 ZXRE160AET5TA part is unused and in its original packaging.

Return procedure for ZXRE160AET5TA:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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