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Diodes Incorporated ZXTR2005Z-13
- Part No.:
- ZXTR2005Z-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-243AA
- Datasheet:
-
ZXTR2005Z-13.pdf
- Description:
- IC REG LINEAR 5V 38MA SOT89
- Quantity:
- Payment:
- Shipping:
Inventory:116,595
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Product details
Overview
ZXTR2005Z-13 from Diodes Incorporated is a monolithic high-voltage linear regulator integrating an emitter-follower transistor, Zener reference, and 150kΩ current-limiting resistor in a single SOT89 package. It delivers a regulated 5V ±10% output at up to 30mA with input voltage range of 10–100V, and is used as a startup supply for DC-DC converters in PoE-powered equipment.
For engineers reviewing the ZXTR2005Z-13 datasheet, ZXTR2005Z-13 pinout, ZXTR2005Z-13 application, or ZXTR2005Z-13 equivalent, this device serves as a compact, lead-free, AEC-Q101-qualified solution for high-input-voltage bias regulation where discrete Zener-transistor networks would otherwise be required.
Technical Context
The ZXTR2005Z operates as a series linear regulator using an emitter-follower topology, with internal Zener-based voltage reference and integrated 150kΩ base resistor that sets quiescent current. Regulation is maintained only when VIN ≥ 10V; below that, VOUT follows VIN – 1.5V.
It features fixed 5V output with ±10% tolerance, 195–300mV line regulation over 10–72V input, and load regulation of –185 to –400mV across 0.1–100mA output current. Thermal performance is specified with RθJA = 59°C/W on 50mm × 50mm copper.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±10% - stable regulated rail for logic or gate-drive bias under varying input conditions |
| Input Voltage Range | 10 V to 100 V - supports wide-range industrial and PoE-derived supplies without external step-down |
| Max Continuous Output Current | 30 mA - sufficient for IC biasing and low-power auxiliary rails in isolated converters |
| Quiescent Current | 260–900 µA - set by internal 150kΩ resistor; enables low-noise, low-power startup sequencing |
| Line Regulation | 195–300 mV - ensures <±6% output deviation across full 10–72V input range at 15mA load |
| Thermal Resistance (J-A) | 59 °C/W - requires ≥50mm × 50mm 1oz copper pad for full 1.7W power dissipation at TA = 25°C |
| ESD Rating (HBM) | 4000 V - robust handling for manufacturing and field-deployed telecom/networking hardware |
Pinout & Package
Package: SOT89 - surface-mount plastic package with exposed VIN pad for thermal conduction; 3-pin configuration with standard footprint per Diodes Inc. outline drawing SOT89.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input Supply | High-voltage input terminal (–0.3 V to 100 V); exposed pad must be soldered to PCB copper for thermal management |
| GND | Power Ground | Reference node for output regulation and internal Zener; connects directly to system ground plane |
| VOUT | Voltage Output | Regulated 5V source; requires ≥10µA minimum load and 10µF bypass capacitor to GND for stability |
Key Features
| Feature | Design Value |
|---|---|
| Monolithic Emitter-Follower Regulator | Eliminates need for external transistor + Zener + resistor network; reduces BOM count and layout area |
| Integrated 150kΩ Base Resistor | Sets predictable quiescent current; avoids variability from discrete resistor selection and placement |
| AEC-Q101 Qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress |
| Lead-Free & Halogen-Free | Meets RoHS 2 and JEDEC J-STD-020 Level 1 moisture sensitivity; compatible with lead-free reflow |
| Wide Input Range (10–100V) | Enables direct connection to PoE 48V, telecom -48V, or industrial 24–72V rails without pre-regulation |
Applications
| Startup Switch in DC-DC Converters | Power-over-Ethernet (PoE) Bias Supply |
|---|---|
|
Use Scenario: Provides initial gate drive or controller VCC during cold-start of flyback or forward converters powered from high-voltage bus. IC Role / Device Role / Timing Role: High-voltage linear regulator supplying clean 5V to PWM controller IC before main transformer feedback loop engages. Use Value: Enables self-biasing without auxiliary winding; eliminates startup delay caused by discrete Zener-resistor networks. |
Use Scenario: Generates regulated 5V bias for PD-side interface ICs (e.g., IEEE 802.3af/at controllers) in PoE-powered devices. IC Role / Device Role / Timing Role: Primary-side regulator converting PoE-classified 44–57V input to stable 5V for classification, detection, and control logic. Use Value: Maintains regulation across full PoE input range while meeting Class 3/4 power budget constraints and thermal limits. |
| Telecom Line Card Power | Industrial Sensor Interface Bias |
|
Use Scenario: Supplies regulated voltage to analog front-end amplifiers and protection circuitry on telecom line cards operating from –48V DC distribution. IC Role / Device Role / Timing Role: Negative-input-compatible linear regulator generating positive 5V rail from inverted –48V supply via external level-shifting diode. Use Value: Delivers low-noise, ripple-free bias without switching noise interference in sensitive analog signal paths. |
Use Scenario: Powers isolated ADCs, transducer excitation circuits, or RS-485 transceivers in industrial PLC modules with 24–48V field wiring. IC Role / Device Role / Timing Role: Compact, thermally efficient local regulator providing stable 5V for precision analog signal conditioning stages. Use Value: Reduces thermal footprint vs. discrete solutions while maintaining ±10% output accuracy over –40°C to +125°C junction range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL783CP | Adjustable output (1.25–125V), higher IQ (~1.5mA), TO-220 package, no integrated Zener/resistor | Requires external resistive divider and heatsink; suitable for variable-output designs needing >30mA | Select when adjustable output or higher current is required; avoid if space-constrained or seeking drop-in simplicity |
| ZXTR2005E6TA | Same die in SOT23-3 package; lower thermal capability (RθJA = 200°C/W), max IOUT = 15mA | Limited to low-power applications; unsuitable for sustained >15mA loads or ambient >70°C | Choose only for ultra-compact layouts where thermal margin allows; not interchangeable with ZXTR2005Z-13 in same footprint |
Compared with TL783CP and ZXTR2005E6TA, the ZXTR2005Z-13 offers fixed 5V output with integrated biasing in a thermally optimized SOT89 package-enabling higher continuous current (30mA) and better thermal performance than SOT23 alternatives, while avoiding external component dependencies required by adjustable regulators.
Availability
ZXTR2005Z-13 is available at Aetrix Electronics and suitable for Power-over-Ethernet (PoE) interface design, telecom line card power, and industrial sensor interface bias requiring stable component supply and AEC-Q101 reliability validation.
Supply support for ZXTR2005Z-13 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, energy-efficient components for industrial, automotive, and communications markets.
The ZXTR2005Z belongs to Diodes' high-voltage linear regulator product line, designed specifically to replace discrete Zener-transistor bias networks in PoE, telecom, and industrial power systems where compactness and thermal efficiency are critical.
FAQ
What is the minimum input voltage required for regulation?
The ZXTR2005Z-13 requires VIN ≥ 10V to maintain regulated 5V output. Below 10V, VOUT tracks VIN minus ~1.5V (i.e., VOUT ≈ VIN – 1.5V). This threshold is defined by the internal Zener reference and emitter-base voltage drop, and is confirmed in the Absolute Maximum Ratings and Typical Application Circuit sections of DS36231 Rev. 4-2.
Can ZXTR2005Z-13 be used with negative input voltages?
No - the device is not rated for negative VIN. The Absolute Maximum Rating specifies VIN = –0.3V to +100V relative to GND. Applying negative voltage to VIN violates absolute maximum limits and risks permanent damage. For –48V telecom applications, external level-shifting (e.g., series diode) is required to ensure VIN remains ≥0V.
What is the recommended output capacitor value and type?
Diodes Inc. recommends a minimum 10µF aluminum or tantalum capacitor from VOUT to GND, placed as close as possible to the device. A 100nF ceramic capacitor in parallel improves high-frequency transient response. These values are specified in the Typical Application Circuit and validated in Load Transient Response test data (DS36231 p.5).
Is ZXTR2005Z-13 pin-compatible with other SOT89 regulators?
No - ZXTR2005Z-13 has a unique pinout: Pin 1 = VIN, Pin 2 = GND, Pin 3 = VOUT. Most standard SOT89 LDOs use Pin 1 = IN, Pin 2 = OUT, Pin 3 = GND. Swapping connections will cause malfunction or damage. Always verify pin mapping using the Top View diagram in DS36231 p.1 before PCB layout.
ZXTR2005Z-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-243AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 100V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 38mA
- Current - Quiescent (Iq):
- 500 µA
- Current - Supply (Max):
- 900 µA
- PSRR:
- 45dB (100Hz)
- Control Features:
- -
- Protection Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-3
ZXTR2005Z-13 FAQ
1.How can I place an order for ZXTR2005Z-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXTR2005Z-13 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 ZXTR2005Z-13 reliable?
The price and inventory of ZXTR2005Z-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXTR2005Z-13 is usually 5 days.
3.What payment methods are accepted for ZXTR2005Z-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXTR2005Z-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXTR2005Z-13?
ZXTR2005Z-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXTR2005Z-13 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 ZXTR2005Z-13?
For technical support, including ZXTR2005Z-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXTR2005Z-13 requirements.
6.How does Aetrix verify that ZXTR2005Z-13 is sourced from the original manufacturer or authorized distributors?
All ZXTR2005Z-13 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 ZXTR2005Z-13 meets industry standards.
7.What is the process for return or replacement of ZXTR2005Z-13?
All ZXTR2005Z-13 units undergo pre-shipment inspection (PSI). If there is an issue with ZXTR2005Z-13, 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 ZXTR2005Z-13 part is unused and in its original packaging.
Return procedure for ZXTR2005Z-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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