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Texas Instruments LM5010AQ0MHX/NOPB
- Part No.:
- LM5010AQ0MHX/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM5010AQ0MHX/NOPB.pdf
- Description:
- IC REG BUCK ADJ 1A 14HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,280
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Product details
Overview
LM5010AQ0MHX/NOPB from Texas Instruments is a high-voltage 1-A synchronous step-down switching regulator with integrated 80-V N-channel buck switch, valley current limit of 1.25 A, programmable switching frequency up to 1 MHz, and 6-V to 75-V input range. It operates in constant ON-time mode, requires no loop compensation, and targets automotive post-regulation and telecom bias supply applications.
For engineers reviewing the LM5010AQ0MHX/NOPB datasheet, LM5010AQ0MHX/NOPB pinout, LM5010AQ0MHX/NOPB application, or LM5010AQ0MHX/NOPB equivalent, key selection criteria include its AEC-Q100 Grade 0 qualification (–40°C to 150°C), exposed thermal pad WSON-10 package, 2.5-V ±2% feedback reference, and RON/SD-controlled shutdown and ON-time programming.
Technical Context
The LM5010AQ0MHX/NOPB implements a constant ON-time control architecture where tON is inversely proportional to VIN and set by an external resistor on the RON/SD pin. It features valley current limiting at 1.25 A, fixed 260-ns minimum OFF-time, and internal 7-V VCC bias regulator with bypass threshold at 8.9 V.
Its functional block integrates a bootstrap gate driver for the N-channel buck switch, dual comparators for regulation (2.5 V) and overvoltage protection (2.9 V), soft-start via 11.5-µA internal current source, and thermal shutdown at 175°C with 20°C hysteresis - all in a single WSON-10 package with exposed thermal pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 6 V to 75 V - supports direct connection to 42-V automotive and 48-V telecom bus without pre-regulation |
| Output Current | 1 A continuous - sufficient for biasing microcontrollers, sensors, and interface ICs in harsh environments |
| Switching Frequency | Up to 1 MHz - enables compact magnetics and low-profile output filtering |
| Current Limit Threshold | 1.25 A (valley detection) - provides robust short-circuit protection while maintaining stable regulation under transient loads |
| Feedback Reference | 2.5 V ±2% - enables precise output voltage setting via external resistor divider (e.g., 3.3 V, 5 V, 12 V) |
| Thermal Shutdown | 175°C with 20°C hysteresis - prevents catastrophic failure during overload or poor heatsinking |
| VCC Regulator | 7 V regulated (VIN > 8.9 V); tracks VIN below 8.9 V - eliminates need for external bias supply in most designs |
Pinout & Package
LM5010AQ0MHX/NOPB is housed in a thermally enhanced 10-pin WSON package (4.00 mm × 4.00 mm) with exposed thermal pad for PCB-level heat dissipation. Pin numbering follows top-view orientation with Pin 1 at bottom-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW | Switching node | Internally connected to source of N-channel buck switch; connects to inductor, freewheeling diode, and bootstrap capacitor |
| BST | Bootstrap supply | Supplies gate drive voltage for high-side switch via external capacitor between BST and SW |
| ISEN | Current sense input | Monitors recirculating inductor current during OFF-time to enable valley current limiting at 1.25 A |
| SGND | Sense ground | Return path for current sense resistor; must be routed separately from power ground to avoid noise coupling |
| RTN | Circuit ground | Ground return for internal control circuitry; tied to system ground but kept distinct from SGND |
| FB | Feedback input | Compares output voltage (via resistor divider) against 2.5-V reference; regulates output within ±2% |
| SS | Soft-start control | Charged by 11.5-µA internal current source to ramp reference and limit inrush current during startup |
| RON/SD | ON-time & shutdown | Resistor-to-VIN sets tON; grounding disables regulator and discharges SS capacitor |
| VIN | Main input supply | Accepts 6–75 V DC; requires local ceramic bypass capacitor near pin |
| VCC | Bias regulator output | Provides internal gate drive and logic power; self-biased up to 7 V or externally supplied (7.5–14 V) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 0 qualification | Rated for –40°C to +150°C ambient operation - suitable for under-hood automotive electronics |
| No loop compensation required | Constant ON-time architecture eliminates external compensation network - reduces BOM count and design iteration time |
| Integrated 80-V N-channel buck switch | Eliminates need for external high-voltage MOSFET and gate driver - simplifies layout and improves reliability |
| Exposed thermal pad (WSON-10) | Enables <3 °C/W junction-to-board thermal resistance - supports 1-A continuous load without heatsink in typical 2-layer PCB |
| Ultra-fast transient response | Sub-microsecond recovery from load steps due to hysteretic-like behavior - maintains tight regulation in dynamic systems |
Applications
| Automotive Infotainment Power Supply | Industrial 48-V Telecom Bias Rail |
|---|---|
Use Scenario: Powers display controller, audio codec, and CAN transceiver in vehicle head unit from 12-V or 42-V battery rail. IC Role / Device Role / Timing Role: Primary non-isolated buck regulator delivering stable 3.3 V/1 A with fast load-step response to handle burst-mode processor activity. Use Value: AEC-Q100 Grade 0 rating ensures operation at 150°C junction temperature; valley current limit prevents latch-up during cold-crank events. | Use Scenario: Generates 5-V bias for Ethernet PHYs, optical modules, and management controllers in telecom line cards. IC Role / Device Role / Timing Role: Secondary-side post-regulator stepping down from intermediate 48-V bus with minimal external components. Use Value: 75-V absolute maximum input withstands telecom surge standards (IEC 61000-4-5); no loop compensation accelerates design validation. |
| Onboard Charger Auxiliary Supply | Heavy-Duty Motor Control Logic Power |
Use Scenario: Supplies isolated gate drivers and MCU in EV onboard charger auxiliary power stage. IC Role / Device Role / Timing Role: High-reliability buck converter operating from 400-V DC-link-derived 60-V intermediate rail. Use Value: Integrated 80-V switch and thermal shutdown protect against overvoltage faults; exposed pad sustains 1-A load at 85°C ambient. | Use Scenario: Powers position encoder interface, current-sense amplifiers, and safety logic in industrial servo drives. IC Role / Device Role / Timing Role: Robust 12-V/1-A bias supply tolerant of motor back-EMF transients and EMI-rich environments. Use Value: 2.5-V ±2% reference and valley current limit ensure accurate ADC reference and fault containment during stall conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5164QDRCRQ1 | Wider 3–100 V input, 0.5-A output, integrated FET, but uses current-mode control requiring compensation | Lower output current; suited for lower-power domains like sensor hubs or CAN nodes | Select when input exceeds 75 V or when tighter current-limit accuracy (<±5%) is required |
| TPS54160AQPWPRQ1 | 6–60 V input, 1.5-A output, external FET drive, adjustable frequency, but no integrated switch | Requires external MOSFET and gate driver; higher solution size and complexity | Select when higher peak current (>1.25 A) or programmable slope compensation is needed |
Compared with LM5010AQ0MHX/NOPB, LM5164QDRCRQ1 offers extended input range but reduced output capability and added compensation overhead, while TPS54160AQPWPRQ1 delivers higher current at the cost of increased component count and layout sensitivity - making LM5010AQ0MHX/NOPB optimal for space-constrained 1-A automotive/industrial buck applications.
Availability
LM5010AQ0MHX/NOPB is available at Aetrix Electronics and suitable for automotive infotainment, industrial 48-V telecom bias rails, and onboard charger auxiliary supplies requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM5010AQ0MHX/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 communications markets.
The LM5010A product line delivers high-voltage buck regulators optimized for simplicity, thermal robustness, and AEC-Q100 compliance - designed specifically for demanding automotive and industrial power conversion where reliability and minimal external components are critical.
FAQ
What is the maximum allowable input voltage for LM5010AQ0MHX/NOPB?
The LM5010AQ0MHX/NOPB has an absolute maximum input voltage rating of 76 V (VIN to RTN), with recommended operation from 6 V to 75 V. Exceeding 75 V risks violating safe operating area limits and may trigger overvoltage stress on internal structures. The device's 80-V rated N-channel switch supports this margin, but sustained operation above 75 V is not advised per TI's recommended conditions.
Does LM5010AQ0MHX/NOPB require external compensation components?
No, LM5010AQ0MHX/NOPB does not require external compensation components. Its constant ON-time control architecture eliminates the need for loop compensation networks. Stability is inherently maintained across line and load variations, simplifying design and reducing bill-of-materials cost compared to voltage-mode or current-mode controllers.
How is the switching frequency programmed on LM5010AQ0MHX/NOPB?
The switching frequency of LM5010AQ0MHX/NOPB is programmed indirectly via the RON resistor connected between VIN and the RON/SD pin. The ON-time (tON) is determined by VIN and RON, and frequency varies inversely with VIN. For example, with RON = 200 kΩ, tON ranges from 290 ns (VIN = 75 V) to 2.75 µs (VIN = 10 V), yielding frequencies up to ~1 MHz at high VIN and light loads.
What is the purpose of the SGND and RTN pins on LM5010AQ0MHX/NOPB?
LM5010AQ0MHX/NOPB separates signal sensing (SGND) from main circuit ground (RTN) to prevent noise from high-current recirculation paths from corrupting the precision 2.5-V feedback reference. SGND carries only the current-sense return, while RTN serves as the ground reference for VCC, FB, SS, and internal logic - proper separation is essential for stable regulation and accurate current limiting.
Is LM5010AQ0MHX/NOPB pin-compatible with standard LM5010A variants?
Yes, LM5010AQ0MHX/NOPB shares identical pinout, package dimensions (WSON-10), and electrical specifications with non-automotive LM5010A variants in the same package. However, it is qualified to AEC-Q100 Grade 0 (–40°C to +150°C ambient), includes enhanced ESD robustness (HBM ±2000 V, CDM ±750 V), and undergoes additional automotive-specific testing - making it a drop-in replacement where automotive reliability is required.
LM5010AQ0MHX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 6V
- Voltage - Input (Max):
- 75V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- 70V
- Current - Output:
- 1A
- Frequency - Switching:
- 100kHz ~ 1MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-HTSSOP
LM5010AQ0MHX/NOPB FAQ
1.How can I place an order for LM5010AQ0MHX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM5010AQ0MHX/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 LM5010AQ0MHX/NOPB reliable?
The price and inventory of LM5010AQ0MHX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM5010AQ0MHX/NOPB is usually 5 days.
3.What payment methods are accepted for LM5010AQ0MHX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM5010AQ0MHX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM5010AQ0MHX/NOPB?
LM5010AQ0MHX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM5010AQ0MHX/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 LM5010AQ0MHX/NOPB?
For technical support, including LM5010AQ0MHX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM5010AQ0MHX/NOPB requirements.
6.How does Aetrix verify that LM5010AQ0MHX/NOPB is sourced from the original manufacturer or authorized distributors?
All LM5010AQ0MHX/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 LM5010AQ0MHX/NOPB meets industry standards.
7.What is the process for return or replacement of LM5010AQ0MHX/NOPB?
All LM5010AQ0MHX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM5010AQ0MHX/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 LM5010AQ0MHX/NOPB part is unused and in its original packaging.
Return procedure for LM5010AQ0MHX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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