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

Diodes Incorporated ZXRE160AH5TA

Name: ZXRE160AH5TA
Brand: Diodes Incorporated
SKU: ZXRE160AH5TA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZXRE160AH5TA

Manufacturer:: Diodes Incorporated

Category:: Voltage Reference

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

Datasheet:: ZXRE160AH5TA.pdf

Description:: IC VREF SHUNT ADJ 0.5% SOT353

Quantity:: RFQ Add To RFQ list

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Inventory:1,077

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Product details

Overview

ZXRE160AH5TA from Diodes Incorporated is a 5-terminal adjustable precision shunt regulator with 0.6 V feedback reference voltage, ±0.5% initial tolerance at +25°C, and operation from –40°C to +125°C. It features separate IN/OUT pins, open-collector output (0.2–18 V), and enables low-voltage point-of-load regulation down to 0.6 V in isolated DC-DC converters for microprocessor/DSP core supplies.

For engineers reviewing the ZXRE160AH5TA datasheet, ZXRE160AH5TA pinout, ZXRE160AH5TA application, or ZXRE160AH5TA equivalent, key selection criteria include its low 0.6 V FB threshold, dual ground pins (PGND/GND), thermal stability (<12 mV drift over –40°C to +125°C), and compatibility with opto-coupled feedback loops in isolated POL regulators.

Technical Context

The ZXRE160AH5TA implements a high-accuracy bandgap reference (0.6 V nominal) driving an open-collector output transistor, with independent PGND and GND pins enabling precise current-sinking control in shunt or series LDO configurations. Its amplifier transconductance is 5000 mA/V, and unity-gain bandwidth reaches 600 kHz.

It operates as a comparator-mode voltage monitor or shunt regulator across 2–18 V input range while regulating output rails as low as 0.6 V via external resistor divider. Power supply rejection exceeds 45 dB at 300 kHz, and dynamic output impedance is 0.25–0.6 Ω over temperature.

Key Specifications

Parameter	Value and Actual Design Meaning
V_FB	0.6 V nominal; sets minimum regulated output voltage - enables 0.6 V core rail regulation in modern SoCs.
Initial Tolerance	±0.5% at +25°C (ZXRE160A grade); ensures tight output accuracy without trimming in production.
Temp Drift	<12 mV over –40°C to +125°C; maintains stable regulation across automotive and industrial ambient ranges.
V_OUT Range	0.2 V to 18 V; supports ultra-low dropout operation and wide-range auxiliary rail control.
I_OUT Max	15 mA sink capability; sufficient to drive optocoupler LEDs or bias external pass transistors.
PSRR	>45 dB at 300 kHz; rejects high-frequency noise from switching power stages feeding the IN pin.
Z_OUT	0.25–0.6 Ω (dynamic); ensures minimal output voltage deviation under load transients.

Pinout & Package

Package: SC70/SOT353 (5-pin, 1.25 mm × 1.75 mm × 0.95 mm), RoHS-compliant, lead-free, halogen-free.

Pin/Terminal	Circuit Role	Design Meaning
1 (PGND)	Power Ground	Emitter return path for output transistor; must be tied to GND but kept low-impedance for current-sinking stability.
2 (GND)	Analog Ground	Reference and amplifier ground; separate from PGND to minimize noise coupling into FB node.
3 (IN)	Supply Input	Bias supply for internal circuitry; requires local 0.1 µF ceramic capacitor to GND for PSRR integrity.
4 (FB)	Feedback Input	0.6 V threshold comparator input; bias current ≤ –200 nA (–40°C to +125°C) minimizes resistor-divider error.
5 (OUT)	Open-Collector Output	Sinks up to 15 mA; connects to optocoupler LED anode or external NPN base - enables galvanic isolation or series LDO topologies.

Key Features

Feature	Design Value
Low 0.6 V reference	Enables direct regulation of sub-1 V digital core rails (e.g., ARM Cortex-A72, Xilinx Zynq Ultrascale+ PLD cores).
Dual ground separation	PGND/GND isolation reduces ground bounce in high-current sinking, preserving FB accuracy in noisy systems.
Wide output voltage range	0.2–18 V OUT operation allows use with low-V_F optocouplers (e.g., PC817) or high-side NPN drivers.
High PSRR & low Z_OUT	45 dB PSRR + 0.25 Ω Z_OUT maintains regulation stability when powered from noisy intermediate rails.
–40°C to +125°C operation	Qualified for under-hood automotive and industrial control applications without derating.

Applications

Isolated DC-DC Converter

Core Voltage POL Regulator

Use Scenario: Secondary-side feedback in flyback or forward converters with optocoupler isolation.

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

Use Value: Enables <0.6 V output regulation with <12 mV total drift - critical for DDR4/LPDDR4 memory I/O and CPU core rails.

Use Scenario: Point-of-load regulation for FPGA or ASIC core voltages in telecom baseband cards.

IC Role / Device Role / Timing Role: Adjustable shunt reference controlling external N-channel MOSFET in series-pass configuration.

Use Value: Delivers 0.6–1.2 V outputs with ±0.5% accuracy and <0.5 V dropout - eliminates need for dedicated low-V_IN LDO ICs.

Low-Dropout Linear Regulator

Supply Monitor / Comparator

Use Scenario: Low-input-voltage linear regulator for battery-powered IoT sensor nodes (2.4–3.6 V Li-ion input).

IC Role / Device Role / Timing Role: Series regulator controller using ZXRE160AH5TA's OUT to drive PNP emitter-follower pass device.

Use Value: Achieves <100 mV dropout at 10 mA load while maintaining 0.6 V reference integrity - extends battery runtime.

Use Scenario: Precision undervoltage lockout (UVLO) or overvoltage indicator in industrial PLC power modules.

IC Role / Device Role / Timing Role: Comparator mode operation with resistor divider on FB pin triggering OUT low at defined thresholds.

Use Value: Configurable trip points (e.g., 1.15 V overvoltage) with <1 mV line/load regulation - replaces discrete comparator + reference combos.

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	2.5 V fixed reference; no 0.6 V option; higher V_REF tolerance (±0.5% at 25°C, ±1.5% over temp).	Cannot regulate sub-1 V rails; requires level-shifting for core voltage monitoring.	Select only if system uses ≥2.5 V reference and space constraints favor SOT-23-5.
ZXRE100A	0.5 V reference; 1% initial tolerance; no PGND/GND separation; lower I_OUT (10 mA max).	Limited thermal stability (>20 mV drift over –40°C to +125°C); unsuitable for automotive AEC-Q100 designs.	Acceptable for cost-sensitive consumer applications where 0.6 V accuracy and dual-ground noise immunity are non-critical.

Compared with TLVH431AIDBVR and ZXRE100A, the ZXRE160AH5TA uniquely delivers 0.6 V reference accuracy, dual-ground architecture, and 15 mA sink current - making it the only choice for high-stability, ultra-low-voltage isolated POL regulation in industrial and automotive embedded systems.

Availability

ZXRE160AH5TA is available at Aetrix Electronics and suitable for isolated DC-DC converters, microprocessor core voltage POL regulators, and low-dropout linear regulators requiring stable component supply across extended temperature ranges.

Supply support for ZXRE160AH5TA 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 targets precision voltage regulation in space-constrained, thermally demanding applications - specifically engineered for isolated feedback, low-voltage core regulation, and programmable monitoring in automotive, industrial, and computing systems.

FAQ

What is the function of the separate PGND and GND pins?

The PGND pin serves as the emitter return path for the internal output transistor, handling high-frequency sink current pulses, while GND provides a quiet reference for the precision bandgap and amplifier. Separating them prevents ground noise from degrading FB pin accuracy - essential for stable regulation in noisy power systems.

Can ZXRE160AH5TA regulate below 0.6 V?

No. The internal reference is fixed at 0.6 V nominal; the lowest achievable output voltage equals V_FB, set by the resistor divider. Attempting to force lower output violates the FB pin's minimum voltage specification and causes regulation loss. It is designed for ≥0.6 V rails only.

How does the ZXRE160AH5TA differ from standard TL431-type shunt regulators?

Unlike TL431 derivatives, ZXRE160AH5TA offers a 0.6 V reference (vs. 2.495 V), separate IN/OUT pins enabling true low-dropout operation, dual grounds for noise isolation, and guaranteed 15 mA sink current at 125°C - making it suitable for next-generation sub-1 V digital power architectures.

What is the recommended capacitor for OUT-to-GND stability?

A ceramic capacitor of 0.1 µF to 10 µF should be placed directly between OUT and GND, as close as possible to the device. For opto-isolated applications, 2.2 µF is typical; for fast transient response in POL use, 0.22 µF is preferred - both values are validated in Diodes' application notes AN58 and AN59.

ZXRE160AH5TA 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:: ±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:: SC-70-5

ZXRE160AH5TA FAQ

1.How can I place an order for ZXRE160AH5TA through Aetrix?

Please submit a Request for Quotation (RFQ) for ZXRE160AH5TA 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 ZXRE160AH5TA reliable?

The price and inventory of ZXRE160AH5TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXRE160AH5TA is usually 5 days.

3.What payment methods are accepted for ZXRE160AH5TA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXRE160AH5TA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZXRE160AH5TA?

ZXRE160AH5TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZXRE160AH5TA 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 ZXRE160AH5TA?

For technical support, including ZXRE160AH5TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXRE160AH5TA requirements.

6.How does Aetrix verify that ZXRE160AH5TA is sourced from the original manufacturer or authorized distributors?

All ZXRE160AH5TA 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 ZXRE160AH5TA meets industry standards.

7.What is the process for return or replacement of ZXRE160AH5TA?

All ZXRE160AH5TA units undergo pre-shipment inspection (PSI). If there is an issue with ZXRE160AH5TA, 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 ZXRE160AH5TA part is unused and in its original packaging.

Return procedure for ZXRE160AH5TA:

1.Submit a request within 90 days.

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

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