LM2825N-ADJ Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
Texas Instruments LM2825N-ADJ is a complete adjustable DC-DC buck switching regulator in a 24-pin DIP package, accepting 4.5 V to 40 V input. Output is adjustable from 1.23 V to 15 V using two external resistors with PWM voltage-mode control. From $4.50 in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 24
- Lifecycle
- OBSOLETE
- Datasheet
- LM2825N-ADJ Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LM2825N-ADJ?
- Adjustable output from 1.23 V to 15 V using two external resistors, enabling flexible power supply design with a single IC covering multiple voltage rails
- Wide 4.5 V to 40 V input voltage range accommodating 5 V logic, 12 V industrial, and 24 V automotive or industrial bus voltages
- Integrated PWM voltage-mode controller with internal compensation minimizing external component count for a compact DC-DC converter solution
What is LM2825N-ADJ used for?
The LM2825N-ADJ is suited for benchtop power supply designs, industrial embedded systems, and laboratory instruments requiring a flexible adjustable step-down regulator from a wide input voltage range. It is commonly used in 12 V to 24 V industrial control boards where point-of-load regulators need to deliver 3.3 V, 5 V, or custom voltage rails with minimal external components. The 24-pin through-hole DIP package supports breadboard evaluation and low-volume production where SMD assembly is not available.
What are the specifications of LM2825N-ADJ?
| Pbfree Code | No |
| YTEOL | 0 |
| Additional Feature | ALSO OPERATES IN ADJUSTABLE MODE FROM 1.23V TO 15V; SEATED HGT-NOM |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 40V |
| Input Voltage-Min | 4.5V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-PDIP-T24 |
| JESD-609 Code | e0 |
| Number of Functions | 1 |
| Output Current-Max | 2.4A |
| Output Voltage-Max | 15V |
| Output Voltage-Min | 1.23V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP24,.6 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| Screening Level | TS 16949 |
| Surface Mount | NO |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 150kHz |
| Technology | BIPOLAR |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | TIN LEAD |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the LM2825N-ADJ datasheet?
LM2825N-ADJ Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM2825N-ADJ?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How do you set a specific output voltage on the LM2825N-ADJ, and what resistor values are needed for a 5 V output?
The output voltage is set by a resistor divider from the output to the feedback pin, referenced to the 1.23 V internal reference. For a 5 V output, the ratio requires R1/R2 = (5 V / 1.23 V) - 1 ≈ 3.07. Using R2 = 10 kΩ sets R1 ≈ 30.7 kΩ (use 30.9 kΩ standard value), achieving a 5 V regulated output from any input between 6 V and 40 V.
What input voltage range does the LM2825N-ADJ cover, and can it regulate from a 24 V industrial bus?
The device accepts input voltages from 4.5 V minimum to 40 V maximum, with a nominal design center of 12 V. It operates reliably from a 24 V industrial bus, converting it to adjustable outputs as low as 1.23 V. The 40 V maximum input provides adequate margin for transients on 24 V DC industrial rails that may spike to 30 V or higher during inductive load switching.
For a lab bench prototyping setup, what advantages does the LM2825N-ADJ 24-pin DIP offer over surface-mount DC-DC controller ICs?
The 24-pin through-hole DIP package plugs directly into a standard solderless breadboard or DIP socket, allowing rapid adjustable power supply prototyping without a PCB. The integrated internal compensation and PWM controller reduce the number of external components to 2 resistors, an inductor, a diode, and input/output capacitors, enabling a complete working regulator in under 10 minutes on a breadboard.
What is the output voltage adjustment range of the LM2825N-ADJ and what is the minimum output it can produce?
The LM2825N-ADJ adjusts output voltage from 1.23 V (equal to the internal reference, achieved with R1 shorted or zero) up to 15 V maximum, covering a wide range of standard logic and power supply rails including 1.8 V, 2.5 V, 3.3 V, 5 V, and 12 V. The 1.23 V minimum output is suitable for powering DDR memory termination or other low-voltage subsystems in systems with higher voltage input buses.
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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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