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Analog Devices Inc. LT1076HVIT-5#PBF
- Part No.:
- LT1076HVIT-5#PBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- TO-220-5
- Datasheet:
-
LT1076HVIT-5#PBF.pdf
- Description:
- IC REG BUCK BOOST 5V 2A TO220-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,902
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Product details
Overview
LT1076HVIT-5#PBF from Analog Devices (formerly Linear Technology) is a high-voltage 2A fixed 5V monolithic bipolar buck switching regulator with integrated 2.6A switch, 100kHz switching frequency, and –40°C to +85°C industrial temperature range. It supports buck, positive-to-negative, and flyback topologies in power supplies for industrial control, telecom power, and distributed DC/DC conversion.
For engineers reviewing the LT1076HVIT-5#PBF datasheet, LT1076HVIT-5#PBF pinout, LT1076HVIT-5#PBF application, or LT1076HVIT-5#PBF equivalent, key selection criteria include its 60V max input rating, 45V switch-to-ground swing, 2% output voltage tolerance over temperature, 9.5mA quiescent current, and TO-220-7 package with shutdown and current limit pins.
Technical Context
The LT1076HVIT-5#PBF implements a classic buck topology with true analog multiplier feedback for input-voltage-independent loop gain and near-instantaneous response to VIN transients. Its on-chip pulse-by-pulse current limiting ensures robustness under short-circuit or overload conditions.
It features a self-boot capability enabling operation down to 5V input in inverting/boost configurations, while maintaining 8V–60V input range in standard buck mode. The switch output is rated to swing 45V below ground, supporting tapped-inductor designs delivering up to 4A at 5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5V ±2% over full temperature and load range - ensures stable logic supply without external resistor divider. |
| Input Voltage Range | 8V to 60V (buck), down to 5V (inverting/boost via self-boot) - supports wide-range industrial and telecom inputs. |
| Switch Current Limit | 2.6A typical (ILIM open) - sets maximum safe inductor current and enables predictable overload protection. |
| Switching Frequency | 100kHz nominal, ±20kHz variation - balances efficiency, EMI, and external component size for cost-sensitive designs. |
| Quiescent Current | 9.5mA max - minimizes no-load power loss in always-on systems. |
| Operating Temperature | –40°C to +85°C ambient - qualified for industrial environments without derating. |
| Switch Voltage Rating | 45V negative swing relative to GND - enables use with tapped inductors for 4A output in buck mode. |
Pinout & Package
LT1076HVIT-5#PBF is housed in a 7-lead plastic TO-220 (T7) package with tab connected to GND for thermal dissipation. Pin 1 is SHDN, Pin 2 is SENSE, Pin 3 is ILIM, Pin 4 is VIN, Pin 5 is VC, Pin 6 is GND, Pin 7 is VSW.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SHDN (Pin 1) | Shutdown control input | Active-low enable: <0.3V disables switching; >2.7V enables regulation - allows system-level power sequencing. |
| SENSE (Pin 2) | Feedback voltage monitor | Compares output voltage (via resistive divider) to internal 5V reference - determines regulation setpoint and error correction. |
| ILIM (Pin 3) | Current limit programming | Resistor-connected pin setting peak switch current (2.6A default when open) - configures overload threshold without external sense resistor. |
| VIN (Pin 4) | Main power input | Accepts 8V–60V unregulated DC - feeds internal bias circuitry and high-side switch driver. |
| VC (Pin 5) | Control amplifier output | Drives external compensation network - provides direct access to error amplifier output for loop stability tuning. |
| GND (Pin 6) | Power and signal reference | Common return for internal circuits, switch source, and feedback - must be low-impedance connection to minimize noise. |
| VSW (Pin 7) | Switch node output | Connects to inductor/diode in buck topology - swings from VIN to –45V relative to GND, enabling high-current tapped-inductor designs. |
Key Features
| Feature | Design Value |
|---|---|
| True analog multiplier feedback | Eliminates input-voltage dependence in loop gain, ensuring consistent transient response across 8–60V input range. |
| Pulse-by-pulse current limiting | Prevents switch destruction during output shorts by limiting each switching cycle's peak current to 2.6A. |
| Self-boot startup | Enables operation from as low as 5V input in inverting or boost configurations without auxiliary winding. |
| High-voltage switch rating | 45V negative swing capability at VSW allows use of center-tapped inductors for 4A 5V outputs in buck mode. |
| Industrial temperature grade | –40°C to +85°C operating range qualifies LT1076HVIT-5#PBF for deployment in harsh environmental conditions. |
Applications
| Industrial 24V DC Power Supply | Telecom -48V to +5V Conversion |
|---|---|
Use Scenario: Converting 24V rail to regulated 5V for PLC I/O modules and sensor interfaces in factory automation. IC Role / Device Role / Timing Role: Primary buck regulator providing isolated 5V logic supply with high input transient immunity. Use Value: 60V input rating tolerates 24V system surges; 2.6A current limit protects against field-wiring faults without external fusing. | Use Scenario: Deriving +5V from legacy –48V telecom battery backup systems using positive-to-negative converter topology. IC Role / Device Role / Timing Role: Inverting regulator generating +5V from negative input without requiring isolated DC/DC module. Use Value: Self-boot capability enables start-up from –48V; 45V VSW swing accommodates transformer turns ratio for efficient conversion. |
| Distributed Power for Embedded Controllers | Test Equipment Auxiliary Supply |
Use Scenario: Local 5V generation on PCBs hosting ARM-based controllers where centralized 12V or 24V bus is available. IC Role / Device Role / Timing Role: Compact, self-contained step-down regulator minimizing board space and external component count. Use Value: Integrated 2.6A switch and fixed 5V output eliminate need for external MOSFET and feedback resistors - reduces BOM and layout complexity. | Use Scenario: Providing clean, stable 5V for digital logic in benchtop test instruments with variable input sources. IC Role / Device Role / Timing Role: High-reliability buck converter with shutdown control for power sequencing and standby modes. Use Value: 9.5mA quiescent current minimizes standby drain; SHDN pin enables microcontroller-controlled power gating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1076CT7-5 | Same architecture but commercial grade (0°C to 70°C); 45V max input vs. 60V; 35V VSW swing vs. 45V. | Limited to benign environments; unsuitable for industrial temperature or high-surge applications. | Select LT1076HVIT-5#PBF when operating beyond 70°C ambient or requiring >45V input headroom. |
| LT3430EFE#PBF | Higher 200kHz frequency; lower 2.5mA IQ; adjustable output; TSSOP-16 package - no integrated current limit resistor. | Requires external feedback resistors and current sense; better suited for compact, low-IQ designs with programmable VOUT. | Choose LT1076HVIT-5#PBF for fixed 5V, high-current, ruggedized TO-220 solution with minimal external parts. |
Compared with LT1076CT7-5, LT1076HVIT-5#PBF delivers extended input voltage (60V vs. 45V), wider temperature range (–40°C to +85°C), and higher switch swing (45V vs. 35V). Against LT3430EFE#PBF, it trades adjustability and low IQ for simplicity, ruggedness, and integrated current limiting - ideal for cost-sensitive industrial power rails.
Availability
LT1076HVIT-5#PBF is available at Aetrix Electronics and suitable for industrial control systems, telecom power conversion, and embedded controller power supplies requiring stable component supply, long-term lifecycle support, and lead-free compliance.
Supply support for LT1076HVIT-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 acquired Linear Technology in 2017 and maintains its precision analog and power management portfolio. Linear pioneered high-performance switching regulators with proprietary bipolar processes.
The LT1076HVIT-5#PBF belongs to the LT1076 HV family designed for rugged, high-input-voltage DC/DC conversion in industrial and telecom infrastructure where reliability, simplicity, and wide operating range are critical.
FAQ
What is the maximum input voltage supported by the LT1076HVIT-5#PBF?
The LT1076HVIT-5#PBF supports a maximum input voltage of 60V in buck configuration. Its absolute maximum rating for input voltage is 64V, and the switch node (VSW) is rated to swing 45V below ground - making it suitable for high-voltage industrial and telecom applications where transient spikes exceed standard 40V limits. This rating is confirmed in the Absolute Maximum Ratings table of the official datasheet.
Does the LT1076HVIT-5#PBF require external components to regulate 5V output?
Yes, the LT1076HVIT-5#PBF requires external components including an inductor, output capacitor, catch diode, and input capacitor to complete the buck converter. However, it does not require external feedback resistors because it has a fixed 5V output internally referenced to a precision 5V bandgap. The SENSE pin connects directly to the output, eliminating the need for a voltage divider - reducing part count and improving accuracy.
Can the LT1076HVIT-5#PBF be used in a positive-to-negative inverting configuration?
Yes, the LT1076HVIT-5#PBF supports positive-to-negative inverting operation using its self-boot capability. When configured as an inverter, it can start up from inputs as low as 5V and deliver regulated negative output. The device's ability to swing VSW 45V below ground and its internal oscillator design make it compatible with standard inverting topologies - verified in Linear Technology Application Note 44 and the "Typical Applications" section of the datasheet.
What is the purpose of the ILIM pin on the LT1076HVIT-5#PBF?
The ILIM pin on the LT1076HVIT-5#PBF sets the peak switch current limit. With no external resistor (open), it defaults to 2.6A. Connecting a resistor between ILIM and GND adjusts the limit per the formula ILIM ≈ (1/R_LIM − 1/5) A. This eliminates the need for a separate current-sense resistor and amplifier, simplifying design while enabling precise overload protection tailored to the inductor and application requirements.
Is the LT1076HVIT-5#PBF RoHS-compliant and lead-free?
Yes, the LT1076HVIT-5#PBF is RoHS-compliant and lead-free, as indicated by the "#PBF" suffix in the part number. Analog Devices confirms this marking denotes lead-free termination per JEDEC J-STD-609. The device uses matte tin plating and meets exemption 7a for high-melting-temperature solders. Full compliance documentation is available through Analog Devices' quality portal and distributor certifications.
LT1076HVIT-5#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- TO-220-5
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Up, Step-Down, Step-Up/Step-Down
- Output Configuration:
- Positive or Negative
- Topology:
- Buck, Boost, Flyback
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 8V
- Voltage - Input (Max):
- 64V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 2A (Switch)
- Frequency - Switching:
- 100kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-5
LT1076HVIT-5#PBF FAQ
1.How can I place an order for LT1076HVIT-5#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1076HVIT-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 LT1076HVIT-5#PBF reliable?
The price and inventory of LT1076HVIT-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 LT1076HVIT-5#PBF is usually 5 days.
3.What payment methods are accepted for LT1076HVIT-5#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1076HVIT-5#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1076HVIT-5#PBF?
LT1076HVIT-5#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1076HVIT-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 LT1076HVIT-5#PBF?
For technical support, including LT1076HVIT-5#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1076HVIT-5#PBF requirements.
6.How does Aetrix verify that LT1076HVIT-5#PBF is sourced from the original manufacturer or authorized distributors?
All LT1076HVIT-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 LT1076HVIT-5#PBF meets industry standards.
7.What is the process for return or replacement of LT1076HVIT-5#PBF?
All LT1076HVIT-5#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1076HVIT-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 LT1076HVIT-5#PBF part is unused and in its original packaging.
Return procedure for LT1076HVIT-5#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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