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Analog Devices Inc. LT3065HDD-5#PBF
- Part No.:
- LT3065HDD-5#PBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LT3065HDD-5#PBF.pdf
- Description:
- IC REG LINEAR 5V 500MA 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,128
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Product details
Overview
LT3065HDD-5#PBF from Analog Devices is a 5V fixed-output, 500mA low-dropout linear regulator with 300mV typical dropout voltage, ±2% output tolerance over line/load/temperature, and integrated power-good flag. It operates from 1.6V to 45V input, features programmable current limit (±10% accuracy), and delivers ultra-low 25µVRMS noise (10Hz–100kHz) for precision analog and automotive power rails.
For engineers reviewing the LT3065HDD-5#PBF datasheet, LT3065HDD-5#PBF pinout, LT3065HDD-5#PBF application, or LT3065HDD-5#PBF equivalent, key selection considerations include its H-grade (–40°C to 150°C) thermal rating, DFN-10 (3mm × 3mm) package with exposed GND pad, 5V fixed output with 86–94% PWRGD trip threshold, and compatibility with ≥3.3µF ceramic output capacitors.
Technical Context
The LT3065HDD-5#PBF implements a micropower LDO architecture with internal reference, error amplifier, and PMOS pass transistor. Its PWRGD flag asserts high when output reaches 86–94% of nominal 5V, with 1.6% hysteresis, enabling reliable system power sequencing.
Current limiting is externally programmable via resistor from IMAX pin to GND, delivering ±10% accuracy across input voltage and temperature; reverse battery, reverse current, and thermal shutdown protections are fully integrated without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±2% - ensures stable logic supply for microcontrollers and sensors without external feedback resistors. |
| Max Output Current | 500mA - supports moderate-power subsystems like ADC front-ends or RF bias rails. |
| Dropout Voltage | 300mV at 500mA - enables regulation from 5.3V input, critical for battery-powered systems near end-of-discharge. |
| Output Noise | 25µVRMS (10Hz–100kHz) - meets stringent noise requirements for precision instrumentation and audio circuitry. |
| Operating Temp Range | –40°C to +150°C (H-grade) - qualified for under-hood automotive and industrial control environments. |
| Power Good Threshold | 86–94% of 5V (4.3–4.7V) with 1.6% hysteresis - provides robust power sequencing and brownout detection. |
| Shutdown Current | <1µA - preserves battery life in always-on monitoring applications. |
Pinout & Package
LT3065HDD-5#PBF uses a thermally enhanced 10-lead 3mm × 3mm plastic DFN package with exposed GND pad (Pin 11), requiring soldering to PCB for thermal and electrical performance. Pin 1–10 follow standard DFN numbering; Pin 11 is exposed GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pins 1, 2) | Input Power Supply | Dual-input configuration lowers effective series resistance; accepts 1.6V–45V with reverse battery protection. |
| SHDN (Pin 3) | Enable/Shutdown Control | Active-low logic input; <1µA shutdown current achieved when pulled low. |
| PWRGD (Pin 4) | Power-Good Status Flag | Open-drain output indicating regulation status; requires external pull-up for system monitoring. |
| IMAX (Pin 5) | Current Limit Programming | Connects to GND via resistor to set precise current limit (e.g., 1.5kΩ = 200mA); unused must tie to GND. |
| NC (Pin 6) | No Connect | Not internally bonded; leave unconnected per datasheet. |
| OUT (Pins 7, 8) | Regulated Output | Dual-output pins reduce trace inductance and improve transient response for 5V rail. |
| GND (Pin 9) | Ground Reference | Primary signal ground; connects to exposed pad (Pin 11) for thermal conduction and low-impedance return path. |
| REF/BYP (Pin 10) | Noise Reduction & Soft-Start | Accepts bypass capacitor (e.g., 10nF) to lower reference noise and control startup slew rate. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Precision Current Limit | Set via single resistor to IMAX pin; ±10% accuracy over –40°C to +150°C and wide VIN range. |
| Low-Noise Reference Architecture | 25µVRMS output noise with 10nF REF/BYP capacitor - eliminates need for post-regulation filtering in sensitive analog stages. |
| Robust Protection Suite | Integrated reverse battery, reverse current, thermal shutdown, and foldback current limiting - reduces BOM count and improves field reliability. |
| Stability with Low-ESR Capacitors | Guaranteed stable with ≥3.3µF ceramic output caps - enables compact, high-reliability designs without tantalum or electrolytic alternatives. |
| AEC-Q100 Qualified (H-Grade) | 100% tested at 150°C junction temperature - validated for automotive power supplies and industrial control units. |
Applications
| Automotive Infotainment Power | Industrial Sensor Signal Chain |
|---|---|
|
Use Scenario: Powering ADCs, op-amps, and precision references in vehicle cabin sensors. IC Role / Device Role / Timing Role: Primary 5V LDO supplying low-noise analog front-end with PWRGD for MCU wake-up coordination. Use Value: 25µVRMS noise and ±2% output tolerance ensure sub-LSB accuracy in 16-bit sensor measurements. |
Use Scenario: Regulating power for isolated RS-485 transceivers and current-loop drivers in factory automation. IC Role / Device Role / Timing Role: Fixed 5V supply with programmable current limit protecting against short-circuited field wiring. Use Value: External IMAX resistor sets 200mA limit matching transceiver peak draw, preventing upstream fuse trips. |
| Avionic Data Acquisition Unit | Portable Medical Instrumentation |
|
Use Scenario: Providing clean 5V rail to FPGA configuration memory and interface logic in flight-critical DAQ modules. IC Role / Device Role / Timing Role: High-reliability LDO with AEC-Q100 H-grade qualification and 150°C operation for extended mission profiles. Use Value: –40°C to +150°C operation ensures functionality during rapid thermal cycling in pressurized avionics bays. |
Use Scenario: Powering ECG front-end amplifiers and low-power microcontrollers in handheld diagnostic devices. IC Role / Device Role / Timing Role: Ultra-low-quiescent LDO enabling >100-hour battery life while maintaining 5V stability during pulse-mode sensing. Use Value: <1µA shutdown current and 300mV dropout extend usable battery voltage down to 3.3V in Li-ion packs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT3066HDD-5#PBF | Same pinout, 500mA, but adds adjustable soft-start and improved PSRR (up to 85dB at 120Hz). | Better suited for systems requiring controlled ramp-up or higher ripple rejection from switching pre-regulators. | Select when soft-start timing control or enhanced AC line rejection is required; otherwise LT3065HDD-5#PBF offers lower cost and simpler layout. |
| TPS7A4701RGWR | 500mA, 5V fixed, 20µVRMS noise, but only rated to 125°C (not AEC-Q100 or H-grade). | Limited to commercial/industrial use; lacks automotive qualification and extended temperature support. | Choose only for non-automotive applications where 125°C max junction temperature is sufficient and lower noise is prioritized. |
Compared with LT3066HDD-5#PBF, LT3065HDD-5#PBF trades adjustable soft-start for lower BOM count and cost; versus TPS7A4701RGWR, it delivers guaranteed 150°C operation and AEC-Q100 compliance essential for automotive deployment.
Availability
LT3065HDD-5#PBF is available at Aetrix Electronics and suitable for automotive infotainment power, industrial sensor signal chains, and avionic data acquisition units requiring stable component supply across extended temperature ranges.
Supply support for LT3065HDD-5#PBF 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LT3065 series belongs to Analog Devices' precision LDO portfolio, designed specifically for noise-sensitive, high-reliability power management in automotive and industrial systems demanding wide VIN, low dropout, and robust protection.
FAQ
What is the maximum input voltage rating for the LT3065HDD-5#PBF?
The LT3065HDD-5#PBF has an absolute maximum IN pin voltage of ±50V, but its functional input voltage range is specified from 1.6V to 45V. Operation above 45V risks exceeding internal voltage limits and is not guaranteed; sustained use beyond 45V may compromise reliability or cause permanent damage.
Does the LT3065HDD-5#PBF require an external feedback resistor network?
No, the LT3065HDD-5#PBF is a fixed 5V output device and does not require external feedback resistors. Its output voltage is internally trimmed to 5.0V ±2% over line, load, and temperature - eliminating resistor matching errors and simplifying layout compared to adjustable variants like the LT3065.
How is the power-good (PWRGD) flag configured on the LT3065HDD-5#PBF?
The PWRGD pin on the LT3065HDD-5#PBF is an open-drain output that pulls low when the output falls below 86–94% of nominal 5V (i.e., 4.3–4.7V). It requires an external pull-up resistor (typically 10–100kΩ) to a logic-compatible voltage to drive host microcontroller interrupt or reset lines.
Can the LT3065HDD-5#PBF be used with ceramic output capacitors smaller than 3.3µF?
No - the LT3065HDD-5#PBF is only guaranteed stable with a minimum 3.3µF ceramic output capacitor. Using smaller values risks oscillation or degraded transient response. The 3.3µF requirement applies regardless of capacitor voltage rating or dielectric type (X5R/X7R recommended).
What thermal derating applies to the LT3065HDD-5#PBF at 150°C junction temperature?
The LT3065HDD-5#PBF is 100% tested at 150°C junction temperature (H-grade), but continuous operation at this limit reduces lifetime. Derating guidelines recommend limiting power dissipation so TJ remains ≤125°C for long-term reliability; thermal design must account for θJA = 31°C/W and mandatory soldering of the exposed GND pad.
LT3065HDD-5#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 45V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.51V @ 500mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 110 µA
- Current - Supply (Max):
- 25 mA
- PSRR:
- 70dB (120Hz)
- Control Features:
- Current Limit, Enable, Power Good, Soft Start
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DFN (3x3)
LT3065HDD-5#PBF FAQ
1.How can I place an order for LT3065HDD-5#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT3065HDD-5#PBF 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 LT3065HDD-5#PBF reliable?
The price and inventory of LT3065HDD-5#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT3065HDD-5#PBF is usually 5 days.
3.What payment methods are accepted for LT3065HDD-5#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT3065HDD-5#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT3065HDD-5#PBF?
LT3065HDD-5#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT3065HDD-5#PBF 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 LT3065HDD-5#PBF?
For technical support, including LT3065HDD-5#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT3065HDD-5#PBF requirements.
6.How does Aetrix verify that LT3065HDD-5#PBF is sourced from the original manufacturer or authorized distributors?
All LT3065HDD-5#PBF 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 LT3065HDD-5#PBF meets industry standards.
7.What is the process for return or replacement of LT3065HDD-5#PBF?
All LT3065HDD-5#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT3065HDD-5#PBF, 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 LT3065HDD-5#PBF part is unused and in its original packaging.
Return procedure for LT3065HDD-5#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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