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Diodes Incorporated ZXTR2105FFQ-7
- Part No.:
- ZXTR2105FFQ-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SOT-23-3 Flat Leads
- Datasheet:
-
ZXTR2105FFQ-7.pdf
- Description:
- IC REG LINEAR 5V 15MA SOT23F
- Quantity:
- Payment:
- Shipping:
Inventory:5,521
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Product details
Overview
ZXTR2105FFQ-7 from Diodes Incorporated is a monolithic 5V ±5% linear regulator transistor in SOT23F, integrating an emitter-follower transistor, zener diode, and bias resistor. It delivers 15mA regulated output across 7–60V input, supports automotive AEC-Q101 qualification, and operates from −40°C to +150°C junction temperature.
For engineers reviewing the ZXTR2105FFQ-7 datasheet, ZXTR2105FFQ-7 pinout, ZXTR2105FFQ-7 application, or ZXTR2105FFQ-7 equivalent, key selection criteria include input voltage range (7–60V), output accuracy (±5%), quiescent current (≤6.7µA at 60V), thermal resistance (95°C/W on 25mm×25mm PCB), and automotive-grade reliability per AEC-Q101.
Technical Context
The ZXTR2105FFQ-7 implements a series linear regulator using an emitter-follower topology with internal zener-based reference and fixed bias network. Regulation is achieved without external feedback components, relying on monolithic integration of active and passive elements.
It functions as a drop-in replacement for discrete 3-component regulator solutions, supporting wide-input operation up to 60V while maintaining stable 5V output under load currents from 0.1mA to 15mA and line variations from 7V to 60V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±5% - delivers stable 5V rail for logic or sensor interfaces across full operating temperature and input range |
| Input Voltage Range | 7 V to 60 V - enables direct regulation from 12V/24V/48V automotive or industrial supplies without pre-regulation |
| Max Output Current | 15 mA continuous - sufficient for low-power microcontrollers, CAN transceivers, or analog sensors |
| Quiescent Current | 450 µA typical at 12V; 6.7 mA max at 60V - ensures low standby power in always-on automotive modules |
| Thermal Resistance θJA | 95 °C/W - defines maximum power dissipation (1.3 W) on standard 25mm×25mm 1oz copper PCB |
| Line Regulation | 700 mV max over 7–60V input - specifies worst-case output deviation when input varies across full range |
| AEC-Q101 Qualified | Yes - validated for automotive underhood applications including temperature cycling, HAST, and mechanical shock |
Pinout & Package
Package: SOT23F - surface-mount plastic package with matte tin-plated leads, UL 94V-0 rating, moisture sensitivity level 1, and 0.008 g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input Supply | Accepts 7–60V DC input; requires 1µF bypass capacitor to GND; absolute max = 60V |
| GND | Power Ground | Reference node for all voltages; must connect directly to system ground plane |
| VOUT | Voltage Output | Delivers regulated 5V; requires ≥10µF output capacitor and minimum 10µA load for regulation stability |
Key Features
| Feature | Design Value |
|---|---|
| Monolithic Regulator Transistor | Integrates transistor, zener, and resistor in single die-eliminates layout sensitivity and component count vs. discrete solutions |
| Wide Input Range Support | Operates from 7V to 60V input-enables use across 12V, 24V, and 48V vehicle architectures without redesign |
| AEC-Q101 Qualification | Validated for automotive underhood environments including −40°C to +150°C operation and PPAP readiness |
| Lead-Free & Green Compliance | Fully RoHS 3 compliant with <900ppm Br/Cl and <1000ppm Sb-meets global environmental and OEM requirements |
| Low Quiescent Current | 450 µA typical at 12V-minimizes battery drain in always-on vehicle modules such as door controllers or body ECUs |
Applications
| Automotive Body Control Module | Industrial Sensor Interface |
|---|---|
Use Scenario: Powering microcontroller peripherals and LIN transceivers in door latch or mirror control units. IC Role / Device Role / Timing Role: Primary 5V regulator supplying logic-level circuitry from unregulated 12V battery rail. Use Value: Eliminates need for external pass transistor and zener, reducing BOM count and PCB area by >40% vs. discrete solution. |
Use Scenario: Providing stable 5V supply to analog pressure or temperature sensors in factory automation equipment. IC Role / Device Role / Timing Role: Low-noise linear regulator ensuring sensor ADC reference stability despite fluctuating 24V field bus voltage. Use Value: Maintains ±5% output accuracy over −40°C to +125°C ambient, enabling reliable sensor calibration without recalibration cycles. |
| Automotive Lighting Control | Telematics Power Sequencing |
Use Scenario: Regulating 5V for LED driver ICs and CAN communication in headlamp control units. IC Role / Device Role / Timing Role: High-voltage tolerant regulator handling load dump transients up to 60V without external clamping. Use Value: Withstands ISO 7637-2 Pulse 5a (load dump) events up to 60V, avoiding need for TVS diode in many designs. |
Use Scenario: Generating controlled 5V rail during cold-start sequencing in GPS/GLONASS telematics modules. IC Role / Device Role / Timing Role: First-stage regulator enabling clean power-up of PMICs and RF front-ends from variable battery voltage. Use Value: Starts regulation at VIN ≥7V-supports operation down to weak battery conditions (e.g., 8.5V cranking) while maintaining 5V output. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar linear regulator transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZXTR2102F | Same SOT23F package but 3.3V output; lower max input (40V); higher quiescent current (1.2mA typ) | Suitable only where 3.3V logic rails are required; not interchangeable for 5V systems | Select only if target application requires 3.3V output and operates below 40V input |
| TLV71350PDBVR | CMOS LDO with 5V output; 5.5V max input; 60µA IQ; no AEC-Q101 qualification | Limited to low-voltage systems; lacks automotive qualification and high-voltage tolerance | Use only in non-automotive, ≤5.5V applications where ultra-low IQ is critical and qualification is not required |
Compared with ZXTR2105FFQ-7, ZXTR2102F provides identical form factor and automotive qualification but targets 3.3V systems, while TLV71350PDBVR offers lower IQ and tighter output tolerance but fails to support >5.5V inputs or AEC-Q101 compliance-making it unsuitable for automotive or wide-input industrial use.
Availability
ZXTR2105FFQ-7 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, and telematics modules requiring stable component supply, AEC-Q101 compliance, and high-voltage input tolerance.
Supply support for ZXTR2105FFQ-7 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 components for automotive, industrial, and computing markets.
The ZXTR series is designed specifically as monolithic regulator transistors for automotive and harsh-environment applications-replacing multi-component discrete regulators with integrated, qualified, and space-saving alternatives.
FAQ
What is the minimum input voltage required for regulation?
The ZXTR2105FFQ-7 requires a minimum input voltage of 7V to maintain regulated 5V output. Below 7V, the output follows VIN minus ~1V (e.g., 6V input yields ~5V output, but unregulated). This threshold is defined by the internal zener reference and emitter-follower headroom.
Can ZXTR2105FFQ-7 be used without an output capacitor?
No. A minimum 10µF ceramic or tantalum capacitor is required between VOUT and GND to ensure loop stability and transient response. Omitting it causes output oscillation or failure to regulate, especially under load steps, due to the absence of external compensation.
Is a minimum load current required for regulation?
Yes. The device requires ≥10µA load current drawn from VOUT to maintain regulation. This ensures proper biasing of the internal zener and transistor; open-circuit or high-impedance loads may cause output voltage to rise above 5V.
How does thermal performance change on smaller PCB copper areas?
When mounted on 15mm×15mm 1oz copper instead of 25mm×25mm, θJA increases from 95°C/W to 126°C/W. This reduces maximum allowable power dissipation from 1.3W to ~0.98W at +25°C ambient, requiring derating above 75°C case temperature.
ZXTR2105FFQ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-23-3 Flat Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 15mA
- Current - Quiescent (Iq):
- 6.7 mA
- Current - Supply (Max):
- -
- PSRR:
- 46dB (100Hz)
- Control Features:
- -
- Protection Features:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23F
ZXTR2105FFQ-7 FAQ
1.How can I place an order for ZXTR2105FFQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXTR2105FFQ-7 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 ZXTR2105FFQ-7 reliable?
The price and inventory of ZXTR2105FFQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXTR2105FFQ-7 is usually 5 days.
3.What payment methods are accepted for ZXTR2105FFQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXTR2105FFQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXTR2105FFQ-7?
ZXTR2105FFQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXTR2105FFQ-7 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 ZXTR2105FFQ-7?
For technical support, including ZXTR2105FFQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXTR2105FFQ-7 requirements.
6.How does Aetrix verify that ZXTR2105FFQ-7 is sourced from the original manufacturer or authorized distributors?
All ZXTR2105FFQ-7 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 ZXTR2105FFQ-7 meets industry standards.
7.What is the process for return or replacement of ZXTR2105FFQ-7?
All ZXTR2105FFQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with ZXTR2105FFQ-7, 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 ZXTR2105FFQ-7 part is unused and in its original packaging.
Return procedure for ZXTR2105FFQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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