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Texas Instruments LM2590HVSX5.0AQ
- Part No.:
- LM2590HVSX5.0AQ
- Manufacturer:
- Texas Instruments
- Package:
- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
- Datasheet:
-
LM2590HVSX5.0AQ.pdf
- Description:
- IC REG BUCK 5V 1A TO263
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LM2590HVSX5.0AQ from Texas Instruments is an automotive-grade, non-synchronous step-down DC-DC converter delivering 1-A output current with fixed 5-V output, 150-kHz fixed-frequency operation, ±4% output voltage accuracy over line/load/temperature, and input voltage support up to 60 V. It serves as a primary buck regulator in vehicle infotainment power rails, ADAS camera modules, and body control units requiring high-voltage tolerance and AEC-Q100 compliance.
For engineers reviewing the LM2590HVSX5.0AQ datasheet, LM2590HVSX5.0AQ pinout, LM2590HVSX5.0AQ application, or LM2590HVSX5.0AQ equivalent, key selection criteria include its 60-V max input rating, integrated error flag with programmable delay, shutdown/soft-start dual-function pin, thermal shutdown protection, and TO-263-7 (KTW) surface-mount package for automotive thermal and reliability requirements.
Technical Context
The LM2590HVSX5.0AQ implements a monolithic buck topology with internal 150-kHz oscillator, fixed-frequency PWM control, and non-synchronous rectification using an external Schottky catch diode. Its feedback loop references a precise 1.23-V internal bandgap and supports output regulation stability via external compensation components.
Functional modes include active switching (with soft-start ramp), low-power shutdown (90 μA standby), and fault response: out-of-regulation flag assertion (≤1 V, open-collector), thermal shutdown, and two-stage current limiting (1.3–2.8 A peak). The device operates across −40°C to +125°C ambient per AEC-Q100 Grade 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±4% over full line/load/temperature range - ensures stable microcontroller or sensor rail without external resistor network. |
| Input Voltage Range | 4.5 V to 60 V - supports 12-V, 24-V, and 48-V automotive battery systems including cold-crank and load-dump transients. |
| Output Current | 1 A continuous - sufficient for powering SoCs, CAN transceivers, or multi-sensor clusters in compact ECUs. |
| Switching Frequency | 150 kHz (±15%) - enables use of standard, cost-effective 47–100 μH shielded inductors and reduces EMI filtering complexity. |
| Quiescent Current | 90 μA in shutdown - minimizes battery drain during vehicle sleep mode, critical for always-on telematics modules. |
| Efficiency | 82% at VIN = 12 V, IOUT = 1 A - delivers high conversion efficiency without forced air cooling in sealed enclosures. |
| Thermal Protection | Junction temperature limit 150°C with automatic thermal shutdown - prevents latch-up or parametric shift under sustained overload. |
Pinout & Package
LM2590HVSX5.0AQ is packaged in a 7-pin DDPAK/TO-263 (KTW) surface-mount package with 10.10 mm × 8.89 mm body size and exposed thermal pad for enhanced PCB heat dissipation in automotive environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+VIN) | Positive input supply | Accepts up to 60 V DC; requires local 470-μF aluminum electrolytic bypass capacitor to handle high di/dt switching currents and suppress transients. |
| 2 (Output) | Internal power switch drain | Drives external Schottky catch diode; swings between ≈(+VIN – 1.2 V) and ≈−0.5 V; connects to inductor node in buck topology. |
| 3 (Error Flag) | Open-collector fault indicator | Asserts low (≤1 V) when VOUT drops below 95% of 5 V; sinks ≤3 mA; requires external pull-up (e.g., 4.7 kΩ to VOUT) for "power good" signaling. |
| 4 (Ground) | Power and signal reference | Common return for input/output capacitors, feedback network, and thermal pad; must be connected to large copper pour for thermal management. |
| 5 (Delay) | Programmable flag delay timing | Charged by 3-μA internal current source; sets power-good assertion delay after regulation; 0.1 μF yields ~400 ms delay before flag goes high. |
| 6 (Feedback) | Regulation sense input | Internally tied to 5-V output; not user-configurable in fixed-version parts - eliminates external resistor divider and improves accuracy vs. adjustable variants. |
| 7 (Shutdown / Soft Start) | Control input for ON/OFF and startup ramp | Pulled high internally; driven low (≤0.6 V) for shutdown (90 μA IQ); capacitor added for soft-start - controls duty-cycle ramp from 0% to 100% over milliseconds. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40°C to +125°C ambient operation, HBM ±2 kV, MM ±200 V - meets automotive electronics reliability and ESD robustness requirements. |
| Integrated error flag with delay | Provides system-level power-good monitoring with user-programmable delay (via capacitor on Pin 5) to avoid false triggers during startup overshoot. |
| Shutdown and soft-start on single pin | Reduces BOM count and simplifies control logic - same pin enables low-IQ sleep mode or controlled voltage ramp to prevent inrush current in downstream circuits. |
| Two-stage current limiting | Detects overcurrent with fast first-stage trip (≈1.3 A) and foldback second stage (≈2.8 A peak) - protects MOSFET and inductor during short-circuit events without latch-up. |
| Thermal shutdown with hysteresis | Shuts down at 150°C junction and restarts only after cooldown to ≈135°C - prevents thermal cycling damage and ensures safe recovery after overload. |
Applications
| Automotive Infotainment Power Supply | ADAS Camera Module Regulator |
|---|---|
|
Use Scenario: Powers DSP, display controller, and USB interface in head-unit systems supplied from 12-V battery with load-dump spikes up to 60 V. IC Role / Device Role / Timing Role: Primary buck regulator converting battery voltage to stable 5-V rail; provides regulated power with error flag for system health monitoring. Use Value: Eliminates need for pre-regulator LDO stages; 82% efficiency at 1 A reduces thermal load in confined dash space; AEC-Q100 compliance ensures field reliability. |
Use Scenario: Supplies image sensor, ISP, and serializer in rear-view or surround-view cameras mounted in hot under-hood or trunk locations. IC Role / Device Role / Timing Role: High-input-voltage step-down converter delivering clean 5-V rail; thermal shutdown protects against ambient + junction temperature accumulation. Use Value: 60-V input rating withstands ISO 7637-2 pulse 5a (load dump); TO-263 thermal pad enables direct mounting to metal chassis for passive cooling. |
| Body Control Unit (BCU) Subsystem | Telematics Control Unit (TCU) Always-On Rail |
|
Use Scenario: Powers microcontroller, LIN transceivers, and LED drivers in door modules or lighting controllers where space and thermal constraints are tight. IC Role / Device Role / Timing Role: Compact, high-efficiency buck regulator replacing discrete solutions; shutdown pin enables deep-sleep mode during vehicle off-state. Use Value: 90 μA shutdown current extends battery life during weeks-long parking; 7-pin TO-263 footprint allows automated assembly and high-density layout. |
Use Scenario: Maintains low-power 5-V rail for GNSS receiver, cellular modem, and real-time clock in TCU during vehicle sleep cycles. IC Role / Device Role / Timing Role: Always-on buck regulator with soft-start to prevent brownout during wake-up; error flag signals loss of regulation to host MCU. Use Value: Soft-start avoids inrush-induced voltage sag on shared battery bus; ±4% output tolerance ensures accurate RTC and GNSS reference voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2590HV-5.0-Q1 | Same architecture and electrical specs but in TO-220-7 (KTT) through-hole package; higher RθJA (50°C/W vs. 50°C/W, but different board layout impact). | Preferred for prototyping, manual assembly, or legacy through-hole designs; less suitable for high-vibration automotive modules requiring surface-mount reliability. | Select LM2590HV-5.0-Q1 only if mechanical mounting or thermal path via heatsink is prioritized over automated SMT production. |
| LM2678-5.0 | Higher 63-V absolute max input, 2.5-A output, but no error flag or delay pin; uses external compensation; larger 8-pin SOIC package. | Better suited for industrial 24-V systems needing higher current; lacks automotive qualification and integrated supervision features required for OEM vehicle integration. | Choose LM2678-5.0 only for non-automotive applications demanding >1 A or wider input range without AEC-Q100 or flag functionality. |
Compared with LM2590HV-5.0-Q1, LM2590HVSX5.0AQ offers identical electrical performance in a smaller, thermally superior surface-mount package optimized for automated manufacturing and vibration resistance; compared with LM2678-5.0, it trades higher current capability for integrated automotive safety features and simplified design-in.
Availability
LM2590HVSX5.0AQ is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and body control units requiring stable component supply with long-term lifecycle assurance and AEC-Q100 traceability.
Supply support for LM2590HVSX5.0AQ 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
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of experience in automotive power management ICs and rigorous quality systems certified to IATF 16949.
The LM2590HV-AQ-Q1 product line was designed specifically for automotive subsystems requiring high-input-voltage DC-DC conversion, functional safety awareness, and robust operation across extreme temperature and ESD environments.
FAQ
What is the maximum input voltage rating for the LM2590HVSX5.0AQ?
The LM2590HVSX5.0AQ supports a recommended operating input voltage range of 4.5 V to 60 V, with an absolute maximum rating of 63 V. This enables reliable operation in 12-V, 24-V, and 48-V automotive battery systems, including transient conditions like load dump per ISO 7637-2. Exceeding 63 V risks permanent damage per the Absolute Maximum Ratings table.
Does the LM2590HVSX5.0AQ require external feedback resistors to set the output voltage?
No. The LM2590HVSX5.0AQ is a fixed 5.0-V output variant - its feedback pin (Pin 6) is internally connected to the output, eliminating the need for external resistor dividers. This improves regulation accuracy (±4% over line/load/temperature) and reduces component count versus adjustable versions like the LM2590HVSX-ADJ.
How does the Error Flag pin (Pin 3) function in the LM2590HVSX5.0AQ?
The Error Flag pin (Pin 3) is an open-collector output that pulls low (≤1 V) when the regulated 5-V output falls below 95% of nominal (i.e., <4.75 V), indicating out-of-regulation. It sinks up to 3 mA and requires an external pull-up resistor (e.g., 4.7 kΩ to VOUT). When high, it signals "power good" - a critical feature for system-level health monitoring in automotive ECUs.
Can the LM2590HVSX5.0AQ be used in thermally constrained automotive applications?
Yes. The LM2590HVSX5.0AQ uses a TO-263-7 (KTW) package with an exposed thermal pad, enabling efficient heat transfer to PCB copper pours or metal chassis. Its thermal resistance is RθJA = 50°C/W on a standard 4-layer JEDEC board, and it includes thermal shutdown at 150°C with hysteresis - making it suitable for under-hood or enclosed module designs where passive cooling is essential.
Is the LM2590HVSX5.0AQ qualified for automotive use according to AEC-Q100 standards?
Yes. The LM2590HVSX5.0AQ is explicitly qualified per AEC-Q100 with Device Temperature Grade 1 (−40°C to +125°C ambient), HBM ESD classification Level 2 (±2 kV), and MM ESD classification Level M3 (±200 V). This qualification is documented in the official TI datasheet SNOSAC0C and verified through TI's automotive qualification program.
LM2590HVSX5.0AQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SIMPLE SWITCHER®
- Package/Case:
- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 1A
- Frequency - Switching:
- 150kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263 (DDPAK-7)
LM2590HVSX5.0AQ FAQ
1.How can I place an order for LM2590HVSX5.0AQ through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2590HVSX5.0AQ 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 LM2590HVSX5.0AQ reliable?
The price and inventory of LM2590HVSX5.0AQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2590HVSX5.0AQ is usually 5 days.
3.What payment methods are accepted for LM2590HVSX5.0AQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2590HVSX5.0AQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2590HVSX5.0AQ?
LM2590HVSX5.0AQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2590HVSX5.0AQ 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 LM2590HVSX5.0AQ?
For technical support, including LM2590HVSX5.0AQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2590HVSX5.0AQ requirements.
6.How does Aetrix verify that LM2590HVSX5.0AQ is sourced from the original manufacturer or authorized distributors?
All LM2590HVSX5.0AQ 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 LM2590HVSX5.0AQ meets industry standards.
7.What is the process for return or replacement of LM2590HVSX5.0AQ?
All LM2590HVSX5.0AQ units undergo pre-shipment inspection (PSI). If there is an issue with LM2590HVSX5.0AQ, 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 LM2590HVSX5.0AQ part is unused and in its original packaging.
Return procedure for LM2590HVSX5.0AQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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