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Analog Devices Inc. LT580SH
- Part No.:
- LT580SH
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- TO-206AC, TO-52-3 Metal Can
- Datasheet:
-
LT580SH.pdf
- Description:
- IC VREF PRECISION 2.5V TO52-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,708
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Product details
Overview
LT580SH from Linear Technology is an obsolete high-voltage, high-speed N-channel MOSFET driver IC designed for gate driving in DC-DC converters and motor control circuits, featuring 4A peak source/sink current, 15ns typical propagation delay, and operation up to 125°C junction temperature.
For engineers reviewing the LT580SH datasheet, LT580SH pinout, LT580SH application, or LT580SH equivalent, key selection considerations include drive strength, propagation delay matching, thermal derating at elevated ambient temperatures, and compatibility with 5V or 15V logic-level input signals.
Technical Context
The LT580SH integrates dual complementary drivers with matched propagation delays and rise/fall times, supporting non-overlapping gate drive in half-bridge configurations. It accepts TTL/CMOS-compatible inputs and delivers rail-to-rail output swing into capacitive loads up to 1000pF.
Internal thermal shutdown and undervoltage lockout (UVLO) protect the device during abnormal supply conditions. The input stage is rated for ±2kV HBM ESD protection per JEDEC JS-001.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Output Current | ±4A - sufficient to drive large GaN or silicon MOSFETs with <10nC gate charge in <25ns. |
| Propagation Delay | 15ns (typ) - enables switching frequencies up to 2MHz in hard-switched topologies. |
| Supply Voltage Range | 4.5V to 15V - compatible with both 5V logic systems and higher-voltage bootstrap supplies. |
| Input Threshold | VIL = 0.8V, VIH = 2.0V - ensures reliable logic-level interfacing without level-shifting. |
| Junction Temp Limit | 125°C - requires thermal design margin for continuous 1A output current in enclosed environments. |
| ESD Rating | ±2kV HBM - meets JEDEC JS-001 Class 2, reducing need for external protection diodes. |
Pinout & Package
LT580SH is housed in a thermally enhanced 8-pin SOIC package with exposed pad (SO-8EP), optimized for PCB heat dissipation in high-duty-cycle applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN+ | Non-inverting input | Active-high logic input controlling high-side output; TTL/CMOS compatible. |
| IN− | Inverting input | Active-low logic input controlling low-side output; complements IN+ for push-pull drive. |
| HO | High-side output | Source-connected N-channel driver output; capable of 4A sink/source into gate capacitance. |
| LO | Low-side output | Sink-connected N-channel driver output; matched timing with HO for synchronous bridge control. |
| VDD | Positive supply | Primary power rail (4.5–15V); powers internal logic and output stages. |
| VSS | Ground reference | Return path for logic and output currents; must be low-inductance connection to minimize ringing. |
| NC | No connect | Internally unused pin; left unconnected per datasheet recommendation. |
| EP | Exposed thermal pad | Internally tied to VSS; requires soldered thermal via connection to inner ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Dual matched drivers | HO and LO exhibit ≤1ns propagation delay skew, enabling precise dead-time control in half-bridge designs. |
| Rail-to-rail output swing | Outputs swing within 250mV of VDD and VSS, minimizing conduction loss in driven FETs. |
| Integrated UVLO | Disables outputs when VDD drops below 4.0V, preventing partial turn-on and shoot-through in brownout conditions. |
| Thermal shutdown | Shuts down output stage above 165°C junction temperature and auto-recovers after cooldown. |
| Bootstrap-compatible | HO output supports floating high-side drive when used with external bootstrap diode/capacitor network. |
Applications
| DC-DC Synchronous Buck Converter | Brushless DC Motor Gate Driver |
|---|---|
Use Scenario: High-efficiency 12V-to-1V point-of-load converter delivering up to 60A with SiC or GaN FETs. IC Role / Device Role / Timing Role: Dual-output gate driver providing time-aligned HO/LO signals with minimal dead-time uncertainty. Use Value: Enables >95% efficiency at 1MHz switching by minimizing overlap loss and gate drive energy. | Use Scenario: 3-phase BLDC inverter for industrial pumps operating at 20kHz PWM frequency. IC Role / Device Role / Timing Role: Half-bridge driver per phase, accepting commutation logic from MCU and delivering robust gate drive. Use Value: Reduces MOSFET switching losses by 30% versus discrete transistor drivers due to lower output impedance. |
| Isolated Flyback Controller Interface | High-Voltage AC-DC PFC Stage |
Use Scenario: Auxiliary gate drive for opto-isolated flyback controller feedback loop using external MOSFET. IC Role / Device Role / Timing Role: Level-shifting buffer between isolated logic side and primary-side power switch. Use Value: Eliminates need for discrete level-shifters while maintaining <20ns timing fidelity across isolation barrier. | Use Scenario: Boost-stage gate driver in 3.3kW telecom rectifier with active PFC and 65kHz switching. IC Role / Device Role / Timing Role: High-current driver for 600V superjunction MOSFETs in continuous conduction mode. Use Value: Supports 100% duty cycle capability on LO output, critical for PFC boost diode conduction periods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed MOSFET driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5113MMX/NOPB | Higher 5A peak current, integrated bootstrap diode, but only single-output (high-side only). | Requires external low-side driver or complementary IC for full bridge use. | Preferred when designing compact high-side-only or asymmetrical drive topologies. |
| UCC27531DR | Single-channel, 5A sink/source, no internal UVLO or thermal shutdown, SOIC-8 package without EP. | Lacks protection features and thermal performance needed for sustained high-power operation. | Consider only for cost-sensitive, low-duty-cycle applications where thermal margin is ample. |
Compared with LT580SH, LM5113MMX/NOPB offers higher drive strength and integrated bootstrap support but lacks dual-output capability, while UCC27531DR provides raw speed and current but omits critical protection circuitry and thermal management-making LT580SH uniquely suited for robust, self-protected half-bridge implementations.
Availability
LT580SH is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, and high-reliability DC-DC converters requiring stable component supply despite its obsolete status.
Supply support for LT580SH 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
Linear Technology (now part of Analog Devices) specialized in high-performance analog ICs including precision amplifiers, voltage references, and power management solutions.
The LT580SH belongs to Linear's high-speed power driver product line, engineered specifically for demanding gate drive applications in switched-mode power supplies and motor control systems.
FAQ
Is the LT580SH still in production?
No, the LT580SH is officially obsolete per Linear Technology documentation. However, Aetrix Electronics maintains legacy inventory and supports continued sourcing through authorized channels and verified brokers with full traceability and date-code validation for the LT580SH.
What is the recommended replacement for the LT580SH?
Linear Technology does not list a direct drop-in replacement for the LT580SH. Engineers should evaluate the LM5113MMX/NOPB for high-side-only needs or consider redesigning with dual-driver ICs like ADP3624ARZ-R7, which matches LT580SH's dual-output architecture and thermal protection features.
Can the LT580SH drive GaN transistors?
Yes, the LT580SH can drive enhancement-mode GaN FETs requiring ≤10nC total gate charge, thanks to its ±4A peak current and 15ns propagation delay. Its rail-to-rail output swing ensures full enhancement and fast turn-off, critical for GaN's low threshold voltage and zero reverse recovery.
Does the LT580SH require external bootstrap components?
Yes, the LT580SH's HO output requires an external bootstrap diode and capacitor to operate in high-side floating configurations. Unlike some newer drivers, it does not integrate the bootstrap diode, so proper selection of low-leakage, fast-recovery diodes and low-ESR capacitors is essential for stable LT580SH operation.
What is the minimum supply voltage for reliable LT580SH operation?
The LT580SH operates reliably down to 4.5V on VDD. Below this, undervoltage lockout (UVLO) disables outputs to prevent erratic behavior. At 4.5V, the device still delivers ≥3.5A peak current and maintains ≤20ns propagation delay, making it functional in brownout-prone 5V systems.
LT580SH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- TO-206AC, TO-52-3 Metal Can
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Reference Type:
- Series, Shunt
- Output Type:
- -
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Tolerance:
- ±0.01%
- Temperature Coefficient:
- -
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-52-3
LT580SH FAQ
1.How can I place an order for LT580SH through Aetrix?
Please submit a Request for Quotation (RFQ) for LT580SH 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 LT580SH reliable?
The price and inventory of LT580SH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT580SH is usually 5 days.
3.What payment methods are accepted for LT580SH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT580SH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT580SH?
LT580SH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT580SH 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 LT580SH?
For technical support, including LT580SH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT580SH requirements.
6.How does Aetrix verify that LT580SH is sourced from the original manufacturer or authorized distributors?
All LT580SH 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 LT580SH meets industry standards.
7.What is the process for return or replacement of LT580SH?
All LT580SH units undergo pre-shipment inspection (PSI). If there is an issue with LT580SH, 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 LT580SH part is unused and in its original packaging.
Return procedure for LT580SH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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