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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > OR Controllers, Ideal Diodes

Diodes Incorporated ZXGD3108N8TC

Name: ZXGD3108N8TC
Brand: Diodes Incorporated
SKU: ZXGD3108N8TC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZXGD3108N8TC

Manufacturer:: Diodes Incorporated

Category:: OR Controllers, Ideal Diodes

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: ZXGD3108N8TC.pdf

Description:: IC OR CTRLR SRC SELECT 8-SO

Quantity:: RFQ Add To RFQ list

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Inventory:1,996

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Product details

Overview

ZXGD3108N8TC from Diodes Incorporated is a 40V active OR'ing MOSFET controller in SO-8 package, designed to drive low-R_DS(ON) N-channel MOSFETs as ideal diodes in high- or low-side power supply units. It features a -3mV turn-off threshold (±2mV tolerance), <600ns turn-off time, and <400µA quiescent current-enabling efficient redundancy in telecom and server power systems.

For engineers reviewing the ZXGD3108N8TC datasheet, ZXGD3108N8TC pinout, ZXGD3108N8TC application, or ZXGD3108N8TC equivalent, key selection criteria include drain voltage rating (–3V to +40V), gate drive sink/source capability (5A/2A), differential sensing accuracy, thermal derating behavior, and SO-8 layout compatibility with high-current return paths.

Technical Context

The ZXGD3108N8TC integrates a precision differential amplifier and high-current gate driver. Its core function is to monitor V_DS across an external MOSFET via DRAIN–GND sensing and compare it against a fixed –3mV threshold to control gate voltage dynamically.

It operates over V_CC = 4–20V and supports both positive- and negative-rail configurations (e.g., +12V high-side or –12V low-side PSU). The device delivers 5A peak sink and 2A peak source current to ensure rapid MOSFET turn-on/turn-off, minimizing reverse current during fault conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Drain Voltage Range	–3V to +40V: Enables use with ±12V, ±24V, or +48V telecom rails and negative supplies without level-shifting.
Turn-Off Threshold	–3mV (±2mV): Detects reverse conduction onset at sub-millivolt resolution for ultra-low-loss ideal diode operation.
Gate Drive Sink/Source	5A sink / 2A source: Drives large gate capacitance MOSFETs rapidly, achieving <600ns turn-off propagation delay.
Quiescent Current	<400µA: Limits standby power to <5mW at 12V, critical for energy-sensitive redundant PSUs.
V_CC Rating	25V max: Supports input rails up to 20V with 5V margin for transient immunity and decoupling stability.
Operating Temp	–50°C to +150°C: Qualified for industrial and telecom environments with extended thermal cycling reliability.

Pinout & Package

Package: SO-8 (surface-mount, 150°C junction-rated, lead-free, RoHS-compliant). Thermal performance optimized by copper connection to pins 2/3 (GND) and 5/6 (V_CC).

Pin/Terminal	Circuit Role	Design Meaning
1, 7	DNC	Do Not Connect - must be left floating; no internal connection or biasing.
2, 3	GND	Ground reference and primary thermal path - connects to MOSFET source and PCB ground plane.
4	GATE	High-current gate driver output - sources up to 2A and sinks up to 5A to switch external MOSFET.
5, 6	V_CC	Power supply input - requires local X7R decoupling capacitor; rated 4–20V operation.
8	DRAIN	Drain sense input - differential measurement point for V_DS; enables bidirectional rail support.

Key Features

Feature	Design Value
Active OR'ing control logic	Real-time V_DS monitoring with –3mV threshold ensures MOSFET turns off before reverse current exceeds safe limits.
High-side & low-side compatibility	Supports both +12V high-side and –12V low-side PSU configurations without external level shifters or bias networks.
Rapid fault response	<600ns turn-off time prevents bus voltage collapse during PSU failure or hot-swap events in N+1 systems.
Low-power standby mode	<400µA I_Q enables continuous monitoring in always-on redundancy controllers without thermal penalty.

Applications

Telecom Power Redundancy

Data Center Server PSU

Use Scenario: Dual +48V DC power feeds to base station radio units with automatic failover on PSU loss.

IC Role / Device Role / Timing Role: OR'ing controller enforcing unidirectional current flow and blocking reverse feed during hot-swap or brownout.

Use Value: Eliminates 0.4–0.7V diode drop, reducing heat generation by >3W per 10A rail and enabling higher density power distribution.

Use Scenario: N+1 redundant 12V intermediate bus architecture in rack-mounted servers.

IC Role / Device Role / Timing Role: Ideal diode supervisor managing load sharing and isolating failed PSUs within <600ns to maintain stable 12V bus.

Use Value: Prevents common-bus droop below 11.4V during fault, avoiding system reset or data corruption in storage and compute modules.

Industrial PLC Power Backplane

Network Switch Fabric Supply

Use Scenario: Dual –24V DC inputs powering programmable logic controller backplanes with field-replaceable PSUs.

IC Role / Device Role / Timing Role: Low-side OR'ing controller detecting reverse V_DS on negative rails and disabling MOSFET channel within nanoseconds.

Use Value: Maintains functional safety integrity by preventing backfeed into a shorted or disconnected PSU, meeting IEC 61000-4-5 surge immunity requirements.

Use Scenario: 3.3V/5V/12V distributed power planes in multi-port Ethernet switches with hot-swap capability.

IC Role / Device Role / Timing Role: Gate driver coordinating multiple parallel MOSFETs as unified ideal diodes per rail under dynamic load transients.

Use Value: Enables <10mV forward voltage drop vs. Schottky diodes, improving efficiency by 1.2% at 20A and reducing thermal design margin by 15°C.

Equivalent & Alternatives

The following parts are listed as comparable options for similar active OR'ing controller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LM5050-1MMX/NOPB	Fixed 50mV turn-on threshold; no negative-rail support; 40V max V_IN; integrated 5V LDO for gate drive.	Limited to high-side +12V/+24V only; cannot operate on –12V or –24V rails.	Select when only positive-rail redundancy is needed and board space allows for LDO-based gate bias.
TPS2410DRCT	Programmable threshold (10–100mV); 16V max V_CC; 100ns turn-off; supports dual MOSFET configurations.	Requires external resistor network for threshold setting; not qualified for >125°C ambient.	Choose for fine-tuned threshold control in compact 12V systems where thermal margin is >25°C above ambient.

Compared with LM5050-1MMX/NOPB and TPS2410DRCT, the ZXGD3108N8TC uniquely supports bidirectional rail polarity, achieves sub-millivolt threshold accuracy without programming, and maintains full specification down to –50°C - making it optimal for telecom and industrial N+1 architectures requiring wide temperature and voltage flexibility.

Availability

ZXGD3108N8TC is available at Aetrix Electronics and suitable for telecom power redundancy, data center server PSU, and industrial PLC backplane applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.

Supply support for ZXGD3108N8TC 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-efficiency power management, signal integrity, and protection solutions for industrial, computing, and communications markets.

The ZXGD3108N8TC belongs to Diodes' Active OR'ing Controller product line, engineered specifically for fault-tolerant power distribution in N+1 redundant systems where millivolt-level sensing accuracy and nanosecond fault response are mandatory.

FAQ

What is the minimum V_CC required for reliable operation?

The ZXGD3108N8TC operates down to 4V V_CC, verified across temperature and load conditions. Below this, gate drive strength degrades and turn-off threshold accuracy falls outside ±2mV spec. For 3.3V systems, a local boost regulator or LDO is required to maintain 4V–20V compliance.

Can ZXGD3108N8TC drive P-channel MOSFETs?

No - the device is designed exclusively for N-channel MOSFETs. Its gate driver outputs a voltage referenced to GND and cannot generate a gate-source voltage above V_CC, making it incompatible with high-side P-channel configurations requiring negative V_GS.

How does the DNC pin affect layout or thermal performance?

Pins 1 and 7 are internally unconnected and must remain floating - no routing, stitching, or thermal pad attachment is permitted. Connecting them risks parasitic coupling or ESD path disruption, and violates JEDEC SO-8 mechanical compliance per the datasheet.

Is external gate resistor (R_G) mandatory?

An external R_G is recommended but not mandatory. It controls MOSFET turn-on slew rate to limit dI/dt-induced noise and ringing. Typical values range from 1Ω to 10Ω; omitting it may cause overshoot or oscillation in high-dV/dt environments like server VRM outputs.

ZXGD3108N8TC Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: N+1 ORing Controller

FET Type:: N-Channel

Ratio - Input:Output:: N:1

Internal Switch(s):: No

Delay Time - ON:: 400 ns

Delay Time - OFF:: 400 ns

Current - Output (Max):: -

Current - Supply:: 200 µA

Voltage - Supply:: 4V ~ 20V

Applications:: General Purpose

Operating Temperature:: -50°C ~ 150°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SO

ZXGD3108N8TC FAQ

1.How can I place an order for ZXGD3108N8TC through Aetrix?

Please submit a Request for Quotation (RFQ) for ZXGD3108N8TC 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 ZXGD3108N8TC reliable?

The price and inventory of ZXGD3108N8TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXGD3108N8TC is usually 5 days.

3.What payment methods are accepted for ZXGD3108N8TC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXGD3108N8TC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZXGD3108N8TC?

ZXGD3108N8TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZXGD3108N8TC 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 ZXGD3108N8TC?

For technical support, including ZXGD3108N8TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXGD3108N8TC requirements.

6.How does Aetrix verify that ZXGD3108N8TC is sourced from the original manufacturer or authorized distributors?

All ZXGD3108N8TC 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 ZXGD3108N8TC meets industry standards.

7.What is the process for return or replacement of ZXGD3108N8TC?

All ZXGD3108N8TC units undergo pre-shipment inspection (PSI). If there is an issue with ZXGD3108N8TC, 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 ZXGD3108N8TC part is unused and in its original packaging.

Return procedure for ZXGD3108N8TC:

1.Submit a request within 90 days.

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

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