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

Diodes Incorporated ZXRE160H5TA

Name: ZXRE160H5TA
Brand: Diodes Incorporated
SKU: ZXRE160H5TA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZXRE160H5TA

Manufacturer:: Diodes Incorporated

Category:: Voltage Reference

Package:: 5-TSSOP, SC-70-5, SOT-353

Datasheet:: ZXRE160H5TA.pdf

Description:: IC VREF SHUNT ADJ 1% SOT353

Quantity:: RFQ Add To RFQ list

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Inventory:12,568

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Product details

Overview

ZXRE160H5TA from Diodes Incorporated is a 5-terminal adjustable precision shunt regulator with 0.6V feedback reference voltage, ±0.5% initial tolerance (A-grade), -40°C to +125°C operating range, and open-collector output capable of sinking up to 15mA. It enables low-voltage point-of-load regulation down to 0.6V in isolated DC-DC converters and microprocessor core supply circuits.

For engineers reviewing the ZXRE160H5TA datasheet, ZXRE160H5TA pinout, ZXRE160H5TA application, or ZXRE160H5TA equivalent, this device supports opto-isolated feedback loops, low-dropout series regulator topologies, and comparator-mode supply monitoring - all requiring precise sub-1V reference stability and wide output voltage compliance (0.2V–18V).

Technical Context

The ZXRE160H5TA integrates a high-accuracy 0.6V bandgap reference and transconductance amplifier driving an open-collector NPN output stage. Its separate IN and PGND pins decouple power delivery from current-sinking functionality, enabling operation where input and regulated rails are at different potentials - critical for auxiliary-rail-powered feedback in isolated converters.

It operates as a comparator when FB exceeds 0.6V (OUT sinks current), or as a shunt regulator when configured with external resistive dividers. Dynamic output impedance is ≤0.6Ω across -40°C to +125°C, and PSRR exceeds 45dB at 300kHz, ensuring robust rejection of input ripple in noisy POL environments.

Key Specifications

Parameter	Value and Actual Design Meaning
V_FB	0.6V nominal; sets minimum regulated output voltage - enables 0.6V core rail control without level-shifting.
Initial Tolerance	±0.5% at +25°C (ZXRE160A grade); ensures tight output accuracy without post-manufacturing trimming.
Temp Drift	<12mV (-40°C to +125°C); maintains stable regulation across automotive and industrial temperature extremes.
V_OUT Range	0.2V to 18V; supports ultra-low-voltage logic rails and high-side sensing in multi-rail systems.
I_OUT Max	15mA sink capability; drives optocoupler LEDs or base current of external pass transistors directly.
PSRR	>45dB at 300kHz; suppresses switching noise from upstream DC-DC stages in POL applications.
Z_OUT	0.25–0.6Ω (dynamic); minimizes output voltage deviation under load transients in high-speed digital supplies.

Pinout & Package

Package: SC70/SOT353 (5-pin, 1.25mm × 2.1mm × 0.9mm), RoHS-compliant, lead-free, 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 - no routing or thermal tie required.
IN (Pin 3)	Supply Input	Provides bias to internal reference and amplifier; requires local 0.1µF ceramic decoupling to GND.
FB (Pin 4)	Feedback Input	Compares against 0.6V reference; connects to resistor divider on regulated rail - input bias current ≤200nA.
GND (Pin 5)	Analog Ground	Reference and amplifier ground return; must be shorted to PGND to avoid offset errors.
OUT (Pin 5)	Open-Collector Output	Sinks current when FB > 0.6V; compatible with 0.2–18V collector voltage - drives optocouplers or PNP bases.

Key Features

Feature	Design Value
0.6V Reference Voltage	Enables direct regulation of sub-1V FPGA/microprocessor cores without external level shifters or amplifiers.
Separate IN and PGND Pins	Allows powering from auxiliary rail while regulating master rail - essential for isolated flyback or forward converter feedback.
0.2V–18V Output Compliance	Supports both ultra-low-voltage logic rails and high-side sensing configurations in multi-output power systems.
Low Dynamic Output Impedance	0.25–0.6Ω ensures minimal output droop during fast load steps - critical for high-dI/dt digital loads.
High PSRR at 300kHz	>45dB rejection of switching noise from typical 300–500kHz DC-DC controllers improves transient immunity.

Applications

Isolated DC-DC Converter Feedback

Microprocessor Core POL Regulator

Use Scenario: Opto-isolated secondary-side voltage regulation in flyback converters powering 0.6V–1.2V SoC cores.

IC Role / Device Role / Timing Role: Shunt regulator providing precise feedback signal to optocoupler LED - replaces TL431 in sub-1V designs.

Use Value: Eliminates need for external voltage translation; enables stable regulation at 0.6V with <12mV total drift over full temperature range.

Use Scenario: Low-dropout series regulator for ARM Cortex-A series processors requiring tightly regulated 0.85V core supply.

IC Role / Device Role / Timing Role: Adjustable reference controlling external PNP pass transistor - functions as programmable error amplifier.

Use Value: Achieves <0.5% output accuracy at 0.85V with dynamic impedance under 0.4Ω, reducing output capacitor requirements.

Supply Voltage Monitor

Current-Boosted Shunt Regulator

Use Scenario: Overvoltage detection for 3.3V I/O rails in industrial PLC modules with LED fault indication.

IC Role / Device Role / Timing Role: Comparator mode operation - triggers OUT low when FB voltage exceeds threshold set by R1/R2 divider.

Use Value: Threshold accuracy ±0.5% enables reliable trip points (e.g., 3.465V ±17mV) without calibration.

Use Scenario: High-current 1.0V shunt regulator delivering 500mA to ASIC test boards using discrete NPN boost transistor.

IC Role / Device Role / Timing Role: Precision reference and error amplifier driving Q1 base - handles >15mA internally, offloads rest to external transistor.

Use Value: Maintains 0.6V reference stability while extending current capacity beyond 15mA limit - avoids thermal derating of IC.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLVH431AIDBZR	2.5V fixed reference; higher V_REF, no sub-1V capability; 0.5% tolerance; SOT23-3 package.	Requires resistive divider to scale down regulated rail - adds error sources and limits minimum output to ~1.25V.	Select only if 2.5V reference suffices and board space favors 3-pin SOT23 over 5-pin SC70.
ZXRE100L5TA	0.6V reference but 1% tolerance; same pinout; lower I_OUT max (10mA); no TSOT25/DFN variants.	Acceptable for cost-sensitive non-critical rails where ±1% accuracy and reduced drive strength are acceptable.	Choose for legacy designs needing footprint compatibility but tolerating wider tolerance and lower current drive.

Compared with TLVH431AIDBZR and ZXRE100L5TA, the ZXRE160H5TA uniquely delivers 0.6V reference accuracy at ±0.5%, 15mA sink current, and true 5-pin functional separation - making it the only option for precision 0.6V–1.0V isolated POL regulation without performance trade-offs.

Availability

ZXRE160H5TA is available at Aetrix Electronics and suitable for isolated DC-DC converters, microprocessor core POL regulators, and supply voltage monitors requiring stable component supply, long-term lifecycle support, and guaranteed RoHS/Green compliance.

Supply support for ZXRE160H5TA 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.

The ZXRE product line delivers precision shunt and series voltage references optimized for low-voltage, high-accuracy power regulation in computing, industrial, and communications infrastructure - with emphasis on sub-1V core rail support and opto-isolated feedback.

FAQ

What is the maximum output current the ZXRE160H5TA can sink reliably?

The ZXRE160H5TA is rated for continuous 15mA sink current at TA = +25°C, with derating to 10mA at +125°C ambient. Absolute maximum rating is 20mA, but sustained operation above 15mA risks thermal shutdown or accelerated aging. For higher currents, use external transistor boosting as shown in Figure 8 of DS35688.

Can ZXRE160H5TA regulate voltages below 0.6V?

No - the internal 0.6V reference sets the absolute lower bound for regulation. The FB pin must reach ≥0.6V to activate the output transistor. Configurations attempting sub-0.6V regulation will result in uncontrolled high-impedance output and loss of regulation.

How should the exposed flag on the SC70/SOT353 package be connected?

The exposed flag on ZXRE160H5TA's SC70/SOT353 package is electrically isolated and thermally conductive. Diodes Incorporated recommends leaving it floating unless used for thermal enhancement; if connected, tie it directly to GND to minimize thermal resistance without introducing ground loop paths.

Does ZXRE160H5TA require an external compensation capacitor in shunt regulator mode?

Yes - a minimum 0.1µF ceramic capacitor between OUT and GND is mandatory for closed-loop stability in shunt regulator configurations. Larger values (up to 10µF) may be needed depending on external resistor values and load dynamics, per the C2 ≥ (R1+R2)×R3/1000 equation in DS35688 Section 8.

ZXRE160H5TA Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Package/Case:: 5-TSSOP, SC-70-5, SOT-353

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:: ±1%

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:: SC-70-5

ZXRE160H5TA FAQ

1.How can I place an order for ZXRE160H5TA through Aetrix?

Please submit a Request for Quotation (RFQ) for ZXRE160H5TA 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 ZXRE160H5TA reliable?

The price and inventory of ZXRE160H5TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXRE160H5TA is usually 5 days.

3.What payment methods are accepted for ZXRE160H5TA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXRE160H5TA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZXRE160H5TA?

ZXRE160H5TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZXRE160H5TA 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 ZXRE160H5TA?

For technical support, including ZXRE160H5TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXRE160H5TA requirements.

6.How does Aetrix verify that ZXRE160H5TA is sourced from the original manufacturer or authorized distributors?

All ZXRE160H5TA 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 ZXRE160H5TA meets industry standards.

7.What is the process for return or replacement of ZXRE160H5TA?

All ZXRE160H5TA units undergo pre-shipment inspection (PSI). If there is an issue with ZXRE160H5TA, 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 ZXRE160H5TA part is unused and in its original packaging.

Return procedure for ZXRE160H5TA:

1.Submit a request within 90 days.

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

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