My Inquiry
My Account
Texas Instruments LM25010MHX/NOPB
- Part No.:
- LM25010MHX/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM25010MHX/NOPB.pdf
- Description:
- IC REG BUCK ADJ 1A 14HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,843
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM25010MHX/NOPB from Texas Instruments is a 42-V, 1-A step-down switching regulator with integrated N-channel buck switch and constant ON-time control architecture. It operates across 6 V to 42 V input, delivers up to 1 A output current, features valley current limiting at 1.25 A, and supports programmable switching frequency up to 1 MHz - used in automotive post-regulation and telecom DC-DC conversion.
For engineers reviewing the LM25010MHX/NOPB datasheet, LM25010MHX/NOPB pinout, LM25010MHX/NOPB application, or LM25010MHX/NOPB equivalent, key selection considerations include its 2.5 V ±2% feedback reference, no-loop-compensation design, thermal shutdown at 175°C, RON/SD shutdown interface, and WSON-10 thermally enhanced package compatibility.
Technical Context
The LM25010MHX/NOPB implements a constant ON-time regulation scheme where tON varies inversely with VIN, enabling nearly constant operating frequency across line and load variations. Its valley current limit detection (1.25 A) operates during OFF-time via ISEN–SGND sensing, while the internal 7-V bias regulator bypasses to VIN below 8.9 V and regulates above that threshold.
Control relies on FB-to-2.5 V comparison and an internal 11.5 µA soft-start current source charging SS to 2.5 V. The integrated N-channel MOSFET driver uses BST–SW bootstrap operation with 260 ns minimum OFF-time to ensure gate drive recharge, and overvoltage protection triggers at 2.9 V on FB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 6 V to 42 V - supports wide industrial and automotive battery-supplied systems without pre-regulation. |
| Output Current | 1 A continuous - sufficient for powering microcontrollers, sensors, and interface ICs in harsh environments. |
| Switching Frequency | Up to 1 MHz - enables compact magnetics and high-density layout; frequency set by RON resistor and VIN. |
| Feedback Reference | 2.5 V ±2% - sets precise output voltage via external resistor divider (VOUT = 2.5 × (R1+R2)/R2). |
| Current Limit Threshold | 1.25 A (typical) - valley-current limiting protects against overload and short-circuit conditions. |
| Thermal Shutdown | 175°C with 20°C hysteresis - disables switching until junction cools to ~155°C, preventing permanent damage. |
| VCC Bias Regulator | 7 V regulated (VIN > 8.9 V); tracks VIN otherwise - eliminates need for external bias supply in most applications. |
| Soft Start Current | 11.5 µA - charges external capacitor linearly to control ramp rate of output voltage during startup. |
Pinout & Package
LM25010MHX/NOPB is packaged in a thermally enhanced 10-pin WSON (DPR) with 4.00 mm × 4.00 mm body size and exposed thermal pad. The package supports high-power density designs and requires PCB ground connection to the exposed pad for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power Input | Main supply input (6–42 V); connects to input bypass capacitors near RTN. |
| SW | Switch Node | Drain of internal N-MOSFET; connects to inductor, freewheeling diode, and bootstrap capacitor. |
| BST | Bootstrap Supply | Charges bootstrap capacitor (C4) from VCC during OFF-time to drive high-side gate. |
| ISEN | Current Sense Input | Senses recirculating inductor current during OFF-time; triggers valley current limit at 1.25 A. |
| SGND | Current Sense Ground | Return path for ISEN current; must be routed separately from power ground to avoid noise coupling. |
| RTN | Analog Ground Return | Ground return for internal circuitry except current sense path; connects to system ground plane. |
| FB | Feedback Input | Compares output voltage (via resistor divider) to 2.5 V reference; controls ON-time initiation. |
| SS | Soft Start Control | Internal 11.5 µA current source charges external capacitor to ramp reference voltage during startup. |
| RON/SD | ON-Time & Shutdown | Resistor sets ON-time; grounding forces shutdown and discharges SS capacitor. |
| VCC | Bias Regulator Output | Supplies internal circuitry; self-biased from VIN (6–8.9 V) or regulated at 7 V (VIN > 8.9 V). |
Key Features
| Feature | Design Value |
|---|---|
| No loop compensation required | Constant ON-time architecture eliminates external compensation network, reducing BOM count and layout sensitivity. |
| Ultra-fast transient response | Direct FB-to-ON-time control enables sub-microsecond load step recovery without phase-margin tuning. |
| Programmable soft start | External capacitor on SS pin sets controlled output voltage ramp time, preventing inrush current and overshoot. |
| Integrated high-voltage bias regulator | Eliminates need for external LDO or charge pump; supports direct connection to 42-V rail with automatic mode switching. |
| Valley current limiting | Detects inductor current at valley point during OFF-time, enabling accurate current foldback and stable light-load operation. |
| Thermal shutdown with hysteresis | 175°C trip and 155°C recovery prevent thermal oscillation and enable safe fault recovery in enclosed environments. |
Applications
| Automotive Body Control Module | Industrial PLC I/O Power |
|---|---|
Use Scenario: Powering MCU, CAN transceivers, and sensor interfaces in 12/24-V vehicle electrical systems with cold-crank and load-dump immunity. IC Role / Device Role / Timing Role: Primary non-isolated buck regulator delivering stable 3.3 V or 5 V from battery rail; handles 6–42 V transients without dropout. Use Value: AEC-Q100 Grade 1 qualification (–40°C to 125°C), valley current limit, and thermal shutdown ensure reliability under automotive stress conditions. | Use Scenario: Generating isolated field-side power for analog input modules in factory automation systems with wide-input industrial supplies. IC Role / Device Role / Timing Role: Secondary-side post-regulator after isolation transformer or DC-DC converter; supplies 1 A to precision ADCs and signal conditioners. Use Value: No loop compensation simplifies design across varying loads; 1.25 A current limit prevents damage during sensor short circuits. |
| Telecom Remote Radio Unit | Commercial HVAC Controller |
Use Scenario: Providing intermediate 5 V rail in outdoor base station radios powered from 48 V telecom battery backup. IC Role / Device Role / Timing Role: High-efficiency step-down stage converting -48 V (with polarity inversion) or +48 V to 5 V for FPGAs and RF front-end ICs. Use Value: 1 MHz max switching frequency allows small inductors/capacitors; wide VIN range accommodates brownout and surge events. | Use Scenario: Powering embedded controller, display, and communication interfaces in wall-mounted thermostats and zone controllers. IC Role / Device Role / Timing Role: Main DC-DC converter deriving 3.3 V from 12–24 V AC/DC adapter or PoE-derived supply. Use Value: WSON-10 package enables compact PCB area; soft start prevents relay chatter during power-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM25011MHX/NOPB | Higher 3-A output current rating; identical pinout and control architecture; shares same WSON-10 package. | Required when load exceeds 1 A; suitable for higher-power MCU or multi-rail systems needing margin. | Select LM25011MHX/NOPB if peak load current exceeds 1.1 A or future scalability is needed. |
| LM5164QDDARQ1 | Wider 4.5–100 V input range; 1-A rating; integrated high-side MOSFET; requires external compensation. | Used in 48-V industrial or commercial systems with higher input surges; lacks valley current limit. | Choose LM5164QDDARQ1 only when input exceeds 42 V or AEC-Q100 Grade 0 (–40°C to 150°C) is mandatory. |
Compared with LM25010MHX/NOPB, LM25011MHX/NOPB offers higher current headroom in identical footprint, while LM5164QDDARQ1 trades no-loop-compensation simplicity for extended input range and different protection behavior - neither is pin-compatible, but both serve adjacent 1-A buck use cases.
Availability
LM25010MHX/NOPB is available at Aetrix Electronics and suitable for automotive electronics, industrial PLC power supplies, and telecommunications regulators requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for LM25010MHX/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, embedded processing, and power management technologies, with leadership in high-reliability industrial and automotive ICs.
The LM25010MHX/NOPB belongs to TI's high-voltage buck regulator product line, designed specifically for cost-sensitive, high-efficiency DC-DC conversion in automotive and industrial environments where wide input range and robust protection are critical.
FAQ
What is the maximum input voltage supported by the LM25010MHX/NOPB?
The LM25010MHX/NOPB supports a maximum input voltage of 42 V continuously, with absolute maximum rating of 45 V on VIN. Operation beyond 42 V risks exceeding recommended operating limits and may trigger thermal shutdown or reduce reliability. The device is optimized for automotive (12 V/24 V) and industrial (24 V/48 V) rails within this range.
Does the LM25010MHX/NOPB require external compensation components?
No, the LM25010MHX/NOPB does not require external compensation components due to its constant ON-time control architecture. This eliminates the need for type-II or type-III compensation networks, simplifying design, reducing bill-of-materials cost, and improving transient response predictability across line and load variations.
How is the switching frequency set on the LM25010MHX/NOPB?
The switching frequency of the LM25010MHX/NOPB is set by an external resistor (RON) connected between VIN and the RON/SD pin, and varies inversely with input voltage. For example, with RON = 200 kΩ and VIN = 24 V, typical frequency is ~400 kHz; it can be programmed from <100 kHz up to 1 MHz depending on RON value and VIN.
What package type is used for the LM25010MHX/NOPB?
The LM25010MHX/NOPB uses the 10-pin WSON (DPR) package with 4.00 mm × 4.00 mm body size and exposed thermal pad. This thermally enhanced package is optimized for high-power-density layouts and requires soldering the exposed pad to the PCB ground plane for effective heat dissipation.
Is the LM25010MHX/NOPB qualified for automotive applications?
Yes, the LM25010MHX/NOPB is AEC-Q100 qualified for automotive applications (Grade 1: –40°C to 125°C ambient). It meets HBM ESD Level 2 (±2000 V) and CDM Level C5 (±750 V), and includes features such as thermal shutdown, input UVLO, and robust current limiting essential for automotive subsystems.
LM25010MHX/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):
- 42V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- 37V
- Current - Output:
- 1A
- Frequency - Switching:
- 100kHz ~ 1MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-HTSSOP
LM25010MHX/NOPB FAQ
1.How can I place an order for LM25010MHX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM25010MHX/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 LM25010MHX/NOPB reliable?
The price and inventory of LM25010MHX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM25010MHX/NOPB is usually 5 days.
3.What payment methods are accepted for LM25010MHX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM25010MHX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM25010MHX/NOPB?
LM25010MHX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM25010MHX/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 LM25010MHX/NOPB?
For technical support, including LM25010MHX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM25010MHX/NOPB requirements.
6.How does Aetrix verify that LM25010MHX/NOPB is sourced from the original manufacturer or authorized distributors?
All LM25010MHX/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 LM25010MHX/NOPB meets industry standards.
7.What is the process for return or replacement of LM25010MHX/NOPB?
All LM25010MHX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM25010MHX/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 LM25010MHX/NOPB part is unused and in its original packaging.
Return procedure for LM25010MHX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM25010MHX/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…
