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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Diodes Incorporated ZMR500FTC

Name: ZMR500FTC
Brand: Diodes Incorporated
SKU: ZMR500FTC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZMR500FTC

Manufacturer:: Diodes Incorporated

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: ZMR500FTC.pdf

Description:: IC REG LINEAR 5V 50MA SOT23-3

Quantity:: RFQ Add To RFQ list

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Inventory:3,497

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Product details

Overview

ZMR500FTC from Diodes Incorporated is a fixed 5.0 V, low-quiescent-current (50–70 µA), SOT23-packaged linear voltage regulator with 50 mA output capability, 25 V max input voltage, and ±1.25% initial output accuracy over temperature and load. It serves as a local low-current power supply for microcontrollers and embedded logic in space-constrained consumer electronics.

For engineers reviewing the ZMR500FTC datasheet, ZMR500FTC pinout, ZMR500FTC application, or ZMR500FTC equivalent, key selection criteria include dropout behavior at 50 mA, thermal shutdown integrity under 125°C ambient, ripple rejection ≥55 dB at 120 Hz, and compatibility with 0.1 µF ceramic output capacitors without external compensation.

Technical Context

The ZMR500FTC employs a bandgap-referenced shunt-regulator topology with internal current limiting and thermal shutdown, eliminating need for external protection circuitry. Its unconditionally stable design supports operation with 0.1 µF ceramic output capacitance across –55°C to +125°C junction temperature range.

It delivers regulated 5.0 V output with line regulation ≤15 mV over VIN = 7–25 V and load regulation ≤40 mV over IO = 0–50 mA. Output noise is specified at 90 µV_rms (10 Hz–10 kHz), and ripple rejection reaches 72 dB at 120 Hz with VIN = 8–18 V.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	5.0 V ±1.25% (min/max 4.78–5.175 V over temp/load)
Max Input Voltage	25 V - enables direct use after 24 V rail or battery-backed systems
Output Current	50 mA - sufficient for MCU core logic, sensors, and I/O buffers
Quiescent Current	50–70 µA - enables >1-year battery life in always-on IoT nodes
Ripple Rejection	55–72 dB @ 120 Hz - suppresses switching noise from upstream DC/DC converters
Dropout Voltage	Typ. 0.4 V @ 50 mA - allows regulation from 5.4 V input in margin-constrained designs
Thermal Shutdown	Active at T_J ≥125°C - prevents permanent damage during sustained overload

Pinout & Package

Supplied in SOT23-3 package (JEDEC TO-236AB), 2.9 mm × 1.3 mm footprint, 1.0 mm height, with gull-wing leads. Pin 1 = IN, Pin 2 = GND, Pin 3 = OUT (top view).

Pin/Terminal	Circuit Role	Design Meaning
1 (IN)	Input voltage terminal	Accepts 7–25 V DC; requires local 0.1 µF ceramic bypass capacitor
2 (GND)	Ground reference	Common return path for input bypass, output filter, and load; must be low-impedance
3 (OUT)	Regulated output	Delivers stable 5.0 V to load; supports 0.1 µF ceramic output capacitor without oscillation

Key Features

Feature	Design Value
Unconditionally stable	Operates reliably with 0.1 µF ceramic output capacitor-no ESR requirements or external compensation needed
Internal short-circuit protection	Current-limited to <100 mA during output fault-prevents latch-up and board-level damage
Low thermal resistance	θ_JA ≈ 250°C/W on standard PCB-supports 500 mW dissipation at 25°C ambient
Lead-free & green construction	Fully RoHS 2 compliant, halogen- and antimony-free (<900 ppm Br+Cl, <1000 ppm Sb)-meets global environmental mandates

Applications

Smart Remote Control Power

DVD/Blu-ray Player Logic Supply

Use Scenario: Standby-mode IR remote with wake-on-button and BLE radio.

IC Role / Device Role / Timing Role: Local 5 V supply for ultra-low-power MCU and RF transceiver during deep-sleep and active transmit.

Use Value: 50 µA quiescent current extends coin-cell lifetime beyond 2 years; 25 V input tolerance accommodates 18–24 V AC adapter ripple.

Use Scenario: Digital audio/video subsystem requiring clean 5 V for HDMI PHY and flash memory interface.

IC Role / Device Role / Timing Role: Post-regulation supply decoupling noise from main 12 V SMPS rail.

Use Value: 72 dB ripple rejection at 120 Hz eliminates visible banding in video output; 50 mA headroom supports burst-mode NAND access.

Security Camera Sensor Bias

Industrial HMI Display Backlight Driver

Use Scenario: Outdoor IP camera with CMOS image sensor and motion detection ASIC.

IC Role / Device Role / Timing Role: Dedicated 5 V bias for analog front-end and ADC reference.

Use Value: ±1.25% output accuracy ensures consistent pixel response across –40°C to +85°C operating range; thermal shutdown prevents field failure in enclosed enclosures.

Use Scenario: Panel-mounted human-machine interface with LED backlight and touch controller.

IC Role / Device Role / Timing Role: Low-noise 5 V rail for capacitive touch IC and display timing generator.

Use Value: 90 µV_rms output noise avoids false touch detection; SOT23 footprint enables placement near display connector for minimal loop area.

Equivalent & Alternatives

The following parts are listed as comparable options for similar fixed-output LDO regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1700T-5002E/TT	Higher quiescent current (1.6 µA typ, but 5 µA max @ 25°C); tighter initial accuracy (±0.4%); lower max input (13.2 V)	Not suitable for 24 V input systems; better for precision analog rails where noise <40 µV_rms is critical	Select when input voltage ≤12 V and ultra-low IQ is secondary to output stability
AP2210K-5.0TRG1	Higher output current (150 mA); higher quiescent current (120 µA); wider dropout (0.6 V @ 150 mA)	Supports higher-drive peripherals (e.g., USB PHY, SD card) but consumes 2.4× more standby current	Select when load exceeds 50 mA and thermal margin permits larger die size

Compared with MCP1700T-5002E/TT and AP2210K-5.0TRG1, the ZMR500FTC uniquely balances 25 V input tolerance, 50 µA quiescent current, and SOT23 footprint-making it optimal for cost-sensitive, space-limited 5 V point-of-load regulation where input voltage may exceed 12 V.

Availability

ZMR500FTC is available at Aetrix Electronics and suitable for smart remote controls, DVD/Blu-ray players, security cameras, and industrial HMIs requiring stable component supply, long-lifecycle availability, and RoHS-compliant sourcing.

Supply support for ZMR500FTC 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, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.

The ZMR series belongs to Diodes' precision voltage regulator product line, engineered specifically for low-power, high-stability local regulation in consumer and industrial electronics where small size, low IQ, and robust thermal protection are mandatory.

FAQ

What is the minimum input voltage required for regulation at full 50 mA load?

The ZMR500FTC requires a minimum input voltage of 6.2 V to maintain 5.0 V output regulation at 50 mA load, per datasheet Section "Electrical Characteristics." This corresponds to a typical dropout voltage of ~0.4 V at 50 mA, verified across –55°C to +125°C junction temperature range.

Can ZMR500FTC operate with a 1 µF ceramic output capacitor?

Yes-the ZMR500FTC is unconditionally stable with ceramic output capacitors ranging from 0.1 µF to 10 µF. The datasheet explicitly validates stability with 0.1 µF, and larger values (e.g., 1 µF) improve transient response without risk of oscillation due to its internal compensation.

Is ZMR500FTC pin-compatible with older ZMR50HFTA devices?

No-ZMR50HFTA was a TO-92 packaged part (obsolete since 2013), while ZMR500FTC uses SOT23-3 with different pinout orientation and thermal characteristics. The SOT23 variant ZMR500FTA is the direct functional replacement; ZMR500FTC is not a valid orderable part number per Diodes' ordering table.

Does ZMR500FTC require an input bypass capacitor?

Yes-an input bypass capacitor (≥0.1 µF ceramic) placed within 5 mm of the IN and GND pins is required to prevent instability and suppress high-frequency noise from upstream sources. The datasheet specifies this in the "Recommended Operating Conditions" section and shows degradation in line transient response without it.

ZMR500FTC Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 25V

Voltage - Output (Min/Fixed):: 5V

Voltage - Output (Max):: -

Voltage Dropout (Max):: -

Current - Output:: 50mA

Current - Quiescent (Iq):: 70 µA

Current - Supply (Max):: -

PSRR:: 72dB (120Hz)

Control Features:: -

Protection Features:: Over Current, Over Temperature

Operating Temperature:: -55°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

ZMR500FTC FAQ

1.How can I place an order for ZMR500FTC through Aetrix?

Please submit a Request for Quotation (RFQ) for ZMR500FTC 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 ZMR500FTC reliable?

The price and inventory of ZMR500FTC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZMR500FTC is usually 5 days.

3.What payment methods are accepted for ZMR500FTC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZMR500FTC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZMR500FTC?

ZMR500FTC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZMR500FTC 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 ZMR500FTC?

For technical support, including ZMR500FTC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZMR500FTC requirements.

6.How does Aetrix verify that ZMR500FTC is sourced from the original manufacturer or authorized distributors?

All ZMR500FTC 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 ZMR500FTC meets industry standards.

7.What is the process for return or replacement of ZMR500FTC?

All ZMR500FTC units undergo pre-shipment inspection (PSI). If there is an issue with ZMR500FTC, 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 ZMR500FTC part is unused and in its original packaging.

Return procedure for ZMR500FTC:

1.Submit a request within 90 days.

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

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