LM27342SD/NOPBIn StockTexas Instruments
LM27342SD/NOPB is a 2A, 42V step-down DC/DC switching regulator by Texas Instruments. Key specs: 2A output current, 4V–42V input voltage, 1.4MHz switching frequency. From $1.20, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline No-lead
- Pin Count
- 10
- Lifecycle
- ACTIVE
- Datasheet
- LM27342SD/NOPB Datasheet PDF
- Category
- Power Supply
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 2A continuous output current with 42V maximum input voltage for wide-input applications
- 1.4MHz fixed switching frequency enables use of small external inductors and capacitors
- Integrated high-side MOSFET with cycle-by-cycle current limiting for robust overcurrent protection
- Adjustable output voltage from 1.285V using a simple external resistor divider
- Thermally enhanced WSON-8 package (SD suffix) for compact, low-profile designs
Applications
The LM27342SD/NOPB is well-suited for industrial power supplies, automotive infotainment systems, and telecom equipment where a wide input voltage range is required. It is commonly used to generate point-of-load rails from unregulated 12V or 24V bus voltages in embedded computing and networking hardware. Its high switching frequency and small package also make it ideal for space-constrained portable and handheld devices.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | ALSO OPERATES IN ADJUSTABLE MODE FROM 1V TO 18V |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 20V |
| Input Voltage-Min | 3V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | S-PDSO-N10 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 2A |
| Output Voltage-Max | 18V |
| Output Voltage-Min | 1V |
| Output Voltage-Nom | 3.9V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC10,.12,20 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 2300kHz |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline No-lead |
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
Compatible alternatives and drop-in replacements for LM27342SD/NOPB:
Frequently Asked Questions
What is the input voltage range of the LM27342SD/NOPB?
The LM27342SD/NOPB accepts an input voltage from 4V to 42V, making it suitable for a wide range of industrial, automotive, and telecom applications where the input bus can vary significantly.
What output current can the LM27342SD/NOPB deliver?
The LM27342SD/NOPB is rated for a continuous output current of 2A. It includes cycle-by-cycle current limiting to protect against overload conditions while maintaining stable regulation.
What is the switching frequency of the LM27342SD/NOPB?
The LM27342SD/NOPB operates at a fixed 1.4MHz switching frequency. This high frequency allows designers to use smaller external passive components, reducing overall solution size and BOM cost.
What package does the LM27342SD/NOPB use?
The LM27342SD/NOPB comes in an 8-pin WSON (thermally enhanced SON) package. The exposed thermal pad improves heat dissipation and keeps junction temperature low at full load.
Can the LM27342SD/NOPB be used in automotive designs?
Yes. The 42V maximum input voltage and wide operating temperature range make the LM27342SD/NOPB a strong candidate for automotive infotainment, ADAS power rails, and other 12V/24V automotive bus applications.
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About Texas Instruments
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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