My Inquiry
My Account
Texas Instruments LM2590HVSX5.0AQ/NOPB
- Part No.:
- LM2590HVSX5.0AQ/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
- Datasheet:
-
LM2590HVSX5.0AQ/NOPB.pdf
- Description:
- IC REG BUCK 5V 1A TO263
- Quantity:
- Payment:
- Shipping:
Inventory:4,947
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM2590HVSX5.0AQ/NOPB 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 switching frequency, ±4% output voltage tolerance over line/load/temperature, and input voltage range up to 60 V. It integrates shutdown/soft-start, out-of-regulation error flag, and delay functionality for use in vehicle infotainment power rails and engine control module pre-regulators.
For engineers reviewing the LM2590HVSX5.0AQ/NOPB datasheet, LM2590HVSX5.0AQ/NOPB pinout, LM2590HVSX5.0AQ/NOPB application, or LM2590HVSX5.0AQ/NOPB equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification (–40°C to +125°C ambient), 90-μA standby current, TO-263-7 package thermal performance (RθJA = 50°C/W), and integrated error flag with programmable delay.
Technical Context
The LM2590HVSX5.0AQ/NOPB implements a fixed-frequency, current-mode buck topology with internal compensation, enabling stable operation with minimal external components. Its oscillator operates at 150 kHz (±15%), allowing compact LC filter design while maintaining high efficiency across wide input ranges.
Functional integration includes undervoltage lockout via the SHUTDOWN/Soft-Start pin, open-collector error flag with 1.3-V threshold and 3-mA sink capability, and a dedicated Delay pin with 3-μA internal charge current for power-good timing control - all supporting robust automotive system supervision.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5 V ±4% over full temperature and load range - ensures stable MCU core supply without external feedback resistors. |
| Input Voltage Range | 4.5 V to 60 V - supports 12-V and 24-V automotive battery systems including cold-crank and load-dump transients. |
| Switching Frequency | 150 kHz (127–173 kHz) - enables use of standard, low-cost 47–100 μH inductors and reduces EMI filtering complexity. |
| Output Current | 1 A continuous - sufficient for powering multiple automotive sensors, CAN transceivers, or display backlight drivers. |
| Standby Current | 90 μA typical - minimizes quiescent drain during vehicle sleep mode, critical for battery longevity. |
| Thermal Resistance | RθJA = 50°C/W (TO-263) - allows 1-A operation at +85°C ambient with minimal heatsinking on standard 2-oz copper PCBs. |
| Oscillator Tolerance | ±15% - accommodates component variation while maintaining predictable ripple and filter sizing. |
Pinout & Package
LM2590HVSX5.0AQ/NOPB uses the KTW (TO-263-7) surface-mount package: 10.10 mm × 8.89 mm body, exposed thermal pad, 7-pin configuration with GND-connected tab for enhanced thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +VIN | Input Power Supply | Accepts 4.5–60 V DC; requires local 470-μF low-ESR aluminum electrolytic bypass capacitor to handle high di/dt switching currents. |
| Output | Internal Switch Drain | Connects to external catch diode anode and inductor; switches between ~(+VIN – 1.2 V) and ~–0.5 V at 150 kHz. |
| Error Flag | Open-Collector Status Output | Sinks ≤3 mA when output drops below 95% of 5 V; requires external pull-up (e.g., 4.7 kΩ to VOUT) for power-good signaling. |
| GND | Power and Signal Reference | Common return for input/output capacitors, feedback network, and thermal pad; must be low-impedance plane under IC. |
| Delay | Programmable Power-Good Timing | Charged by 3-μA internal current source; 0.1-μF capacitor yields ~43-ms delay before Error Flag goes high after regulation achieved. |
| Feedback | Regulation Sense Input | Internally tied to 5-V output; not user-accessible in fixed-version - eliminates resistor divider errors and layout sensitivity. |
| SHUTDOWN / Soft Start | Enable & Ramp Control | Pulled high internally; driven low (≤0.6 V) enters 90-μA shutdown; capacitor here provides controlled VOUT ramp rate during startup. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 Qualification | Validated for –40°C to +125°C ambient operation with HBM ±2000 V and MM ±200 V ESD ratings - meets automotive electronics reliability requirements. |
| Integrated Error Flag with Delay | Provides programmable power-good signal with configurable delay (via external capacitor) - enables safe sequencing with microcontrollers and FPGAs. |
| Low Standby Quiescent Current | 90 μA typical in shutdown - extends battery life in always-on vehicle modules such as telematics and alarm systems. |
| Fixed-Frequency Current-Mode Control | 150-kHz internal oscillator with inherent cycle-by-cycle current limiting - simplifies EMI filtering and improves transient response vs. variable-frequency alternatives. |
| Thermal Shutdown & Current Limit | Two-stage switch current limit (1.3–2.8 A peak) plus junction temperature cutoff at 150°C - prevents damage during overload or poor heatsinking conditions. |
Applications
| Automotive Infotainment Power Rail | Engine Control Unit (ECU) Pre-regulator |
|---|---|
Use Scenario: Supplies clean 5-V rail to DSPs, audio codecs, and touch controllers in head units and digital clusters. IC Role / Device Role / Timing Role: Primary buck regulator converting 12-V battery to stable 5-V domain; error flag synchronizes boot sequence with main SoC. Use Value: ±4% output tolerance and 150-kHz fixed frequency ensure consistent timing margin for high-speed interfaces like I²S and SPI. | Use Scenario: Generates intermediate 5-V supply for sensor signal conditioning and CAN transceiver biasing in engine management systems. IC Role / Device Role / Timing Role: High-input-voltage step-down stage preceding LDOs; shutdown pin enables microcontroller-controlled power gating during idle cycles. Use Value: 60-V max input withstands ISO 7637-2 pulse 5a (load dump), while 90-μA standby current meets UNECE R100 energy consumption limits. |
| ADAS Camera Module Power | Body Control Module (BCM) Subsystem |
Use Scenario: Powers image sensor, ISP, and MIPI interface in rear-view and surround-view cameras. IC Role / Device Role / Timing Role: Non-isolated buck converter with soft-start to prevent inrush-induced voltage sag on shared 12-V bus during camera initialization. Use Value: Programmable soft-start (via SS pin capacitor) controls dV/dt to <5 V/ms, avoiding false resets in adjacent microcontrollers. | Use Scenario: Delivers regulated 5-V power to door lock actuators, window lift controllers, and interior lighting drivers. IC Role / Device Role / Timing Role: Centralized switching regulator replacing multiple linear regulators; error flag monitors rail integrity for diagnostic reporting. Use Value: Integrated thermal shutdown and current limit eliminate need for external fault protection circuitry, reducing BOM count and board area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2590HVSX-5.0/NOPB | Non-automotive grade (no AEC-Q100 qualification); same electrical specs and pinout. | Lacks automotive qualification testing - unsuitable for safety-critical or production vehicle ECUs. | Select only for prototyping or non-automotive industrial applications where qualification is not required. |
| LM2596SX-5.0/NOPB | Lower input voltage max (40 V vs. 60 V); no error flag or delay pin; 150-kHz frequency retained. | Cannot support 24-V commercial vehicle systems or provide power-good signaling for sequenced startup. | Choose when cost is primary constraint and input voltage stays ≤40 V with no supervision requirements. |
Compared with LM2590HVSX5.0AQ/NOPB, the LM2590HVSX-5.0/NOPB offers identical performance but lacks AEC-Q100 validation, while the LM2596SX-5.0/NOPB sacrifices input voltage headroom and supervisory features to reduce cost - making LM2590HVSX5.0AQ/NOPB the only choice for production automotive designs requiring both 60-V operation and fault signaling.
Availability
LM2590HVSX5.0AQ/NOPB is available at Aetrix Electronics and suitable for automotive infotainment systems, engine control units, ADAS camera modules, and body control modules requiring stable component supply across extended temperature and lifecycle demands.
Supply support for LM2590HVSX5.0AQ/NOPB 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 company specializing in analog and embedded processing technologies, with leadership in power management ICs for automotive, industrial, and consumer markets.
The LM2590HV-AQ-Q1 product line delivers high-voltage, AEC-Q100-qualified buck regulators targeting automotive subsystems needing reliable 1-A power conversion from 12-V/24-V batteries - emphasizing thermal robustness, fault visibility, and long-term supply stability.
FAQ
What is the maximum input voltage rating for LM2590HVSX5.0AQ/NOPB?
The LM2590HVSX5.0AQ/NOPB has an absolute maximum input voltage rating of 63 V, with recommended operating range from 4.5 V to 60 V. This 60-V upper limit enables compatibility with 24-V commercial vehicle systems and withstands ISO 7637-2 load-dump transients without external clamping. Operation beyond 60 V risks permanent damage and voids AEC-Q100 qualification compliance.
Does LM2590HVSX5.0AQ/NOPB require external feedback resistors?
No, LM2590HVSX5.0AQ/NOPB does not require external feedback resistors because it is a fixed 5-V output version. The feedback node is internally connected to the output, eliminating resistor tolerance errors and layout sensitivity. This simplifies design, improves long-term stability, and reduces bill-of-materials count compared to adjustable versions like LM2590HVSX-ADJ/NOPB.
How is thermal performance characterized for LM2590HVSX5.0AQ/NOPB in TO-263 package?
LM2590HVSX5.0AQ/NOPB in the KTW (TO-263-7) package has a junction-to-ambient thermal resistance (RθJA) of 50°C/W when mounted on a standard 4-layer JEDEC board. Its junction-to-case (top) resistance is 2°C/W, enabling efficient heat transfer to an external heatsink or copper pour. At 1-A load and +85°C ambient, junction temperature remains within the 150°C limit using only PCB copper area - no additional heatsink required.
Can LM2590HVSX5.0AQ/NOPB be used in discontinuous conduction mode (DCM)?
Yes, LM2590HVSX5.0AQ/NOPB operates naturally in discontinuous conduction mode at light loads (e.g., <250 mA with 52-μH inductor), as confirmed in Figure 21 of the datasheet. Its current-mode control maintains stability across CCM/DCM boundaries without external compensation. DCM operation reduces light-load efficiency slightly but improves transient response and eliminates subharmonic oscillation concerns common in voltage-mode converters.
What is the purpose of the Delay pin (Pin 5) on LM2590HVSX5.0AQ/NOPB?
The Delay pin (Pin 5) on LM2590HVSX5.0AQ/NOPB sets the time interval between output regulation and assertion of the Error Flag (Pin 3) as a power-good signal. An external capacitor (e.g., 0.1 μF) charges via a 3-μA internal current source; when voltage reaches 1.3 V, Pin 3 goes high (with external pull-up). This enables safe sequencing of downstream logic, preventing premature enablement before rail stabilization.
LM2590HVSX5.0AQ/NOPB 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/NOPB FAQ
1.How can I place an order for LM2590HVSX5.0AQ/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2590HVSX5.0AQ/NOPB 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/NOPB reliable?
The price and inventory of LM2590HVSX5.0AQ/NOPB 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/NOPB is usually 5 days.
3.What payment methods are accepted for LM2590HVSX5.0AQ/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2590HVSX5.0AQ/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2590HVSX5.0AQ/NOPB?
LM2590HVSX5.0AQ/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2590HVSX5.0AQ/NOPB 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/NOPB?
For technical support, including LM2590HVSX5.0AQ/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2590HVSX5.0AQ/NOPB requirements.
6.How does Aetrix verify that LM2590HVSX5.0AQ/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2590HVSX5.0AQ/NOPB 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/NOPB meets industry standards.
7.What is the process for return or replacement of LM2590HVSX5.0AQ/NOPB?
All LM2590HVSX5.0AQ/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2590HVSX5.0AQ/NOPB, 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/NOPB part is unused and in its original packaging.
Return procedure for LM2590HVSX5.0AQ/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2590HVSX5.0AQ/NOPB Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
