LM27402MH/NOPB Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments LM27402MH/NOPB is a voltage-mode PWM synchronous buck controller operating from 3V to 20V input with DCR current sensing. Designed for high-efficiency DC-DC conversion in computing and telecom power supplies with flexible compensation and programmable frequency. Available from stock worldwide with competitive pricing and fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 17
- Lifecycle
- ACTIVE
- Datasheet
- LM27402MH/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Voltage-mode PWM control with DCR (DC Resistance) current sensing eliminates the need for a discrete sense resistor, improving efficiency
- Wide 3V to 20V input voltage range (12V nominal) supporting operation from standard 5V, 12V, and 19V supply rails
- Synchronous buck controller topology drives both high-side and low-side MOSFETs for maximum power conversion efficiency
- Programmable switching frequency and flexible external compensation network for optimized transient response across diverse load profiles
Applications
The LM27402MH/NOPB is designed for point-of-load (POL) DC-DC conversion in server power supply units, networking equipment, and FPGA power rails where high efficiency and tight voltage regulation are critical. It is commonly used in computing motherboards, storage arrays, and telecommunications infrastructure to step down 12V bus voltages to core and I/O voltages for processors and ASICs. The device is also deployed in industrial power supplies and test equipment where programmable switching frequency and robust overcurrent protection simplify multi-output power system design.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | SEATED HGT-NOM |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 20V |
| Input Voltage-Min | 3V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 30A |
| Output Voltage-Max | 18.6V |
| Output Voltage-Min | 0.6V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 1200kHz |
| Technology | BICMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the input voltage range of the LM27402MH/NOPB?
The LM27402MH/NOPB operates with an input voltage range from 3V minimum to 20V maximum, with a nominal design point of 12V. This range covers the most common DC bus voltages in computing and industrial systems, including 5V, 9V, 12V, and 19V rails.
What control mode does the LM27402MH/NOPB use and what are the advantages?
The LM27402MH/NOPB uses voltage-mode PWM (Pulse Width Modulation) control. Voltage-mode control offers simple external compensation design, predictable loop behavior, and excellent noise immunity compared to current-mode control, making it easier to optimize for a wide range of output voltages and load currents.
What is DCR current sensing and why is it used in the LM27402MH/NOPB?
DCR current sensing uses the DC winding resistance of the output inductor as a current sense element, eliminating the power dissipation of a discrete sense resistor. The LM27402MH/NOPB's DCR sensing architecture improves overall converter efficiency by 0.5-1% compared to resistor-based sensing, which is significant in high-current applications.
What package does the LM27402MH/NOPB use?
The LM27402MH/NOPB uses a 16-pin SOIC (Small Outline Integrated Circuit) package designated JESD-30 code R-PDSO-G16. The MH package variant includes an exposed thermal pad for improved heat dissipation, and NOPB indicates the lead-free (no lead/Pb) RoHS-compliant version.
What types of applications is the LM27402MH/NOPB best suited for?
The LM27402MH/NOPB is best suited for synchronous buck converter designs in server and workstation power supplies, network switch power rails, FPGA core voltage regulators, and industrial automation controllers. Its voltage-mode PWM control and DCR sensing make it ideal for high-current point-of-load converters where efficiency and precision regulation are critical design requirements.
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Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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