LM2574M-ADJ NOPB Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
LM2574M-ADJ NOPB is a 0.5 A adjustable step-down switching voltage regulator from Texas Instruments, operating from an input voltage up to 40 V with adjustable output regulated by external resistors. It integrates all active circuits needed for a DC/DC converter with only a few external components. Ideal for battery chargers, distributed power systems, and general-purpose power conversion designs.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- LM2574M-ADJ NOPB Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Adjustable output voltage step-down regulator
- Up to 40 V input voltage operation
- 0.5 A output current capability
- Requires only 4 external components for complete regulator
- High efficiency fixed-frequency 52 kHz switching
- SOIC-8 compact package for space-constrained designs
Applications
The LM2574M-ADJ NOPB is used in compact, cost-sensitive DC/DC converter designs requiring adjustable output voltages set by two external resistors. Its 40 V input rating makes it suitable for automotive pre-regulation stages, industrial sensor power supplies, and battery management circuits. The SO-8 package and minimal external component count simplify PCB layout and reduce bill-of-materials cost.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM2574M-ADJ NOPB:
Switching Regulator, Voltage-mode, 0.5A, 52kHz Switching Freq-Max, PDSO14
Frequently Asked Questions
What output current can the LM2574M-ADJ NOPB deliver, and how is the output voltage set?
The LM2574M-ADJ NOPB can deliver up to 0.5 A of output current. The output voltage is set by connecting two external resistors between the output and the feedback pin, allowing any voltage from 1.23 V up to approximately 37 V within the 40 V input range.
How does the LM2574M-ADJ NOPB compare to a fixed-output variant for prototyping flexibility?
Unlike fixed-output variants that lock output to one voltage such as 3.3 V or 5 V, the adjustable LM2574M-ADJ NOPB lets designers set any output voltage using a resistor divider, making it more versatile for prototyping stages where the final rail may vary between 1.23 V and 37 V.
Which applications benefit from the LM2574M-ADJ NOPB 52 kHz switching regulator topology?
Its 52 kHz fixed-frequency operation allows use of a compact 100 µH to 220 µH inductor and a 100 µF output capacitor, making the design ideal for 5 V to 12 V industrial sensor power supplies, battery charger pre-regulators, and low-component-count distributed power nodes.
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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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