LM2598S-ADJIn StockTexas Instruments
LM2598S-ADJ is a 3A adjustable output step-down switching regulator with 4.5V–40V input range and current-mode PWM control. Features internal 3A switch, fixed 150kHz switching frequency, and short-circuit protection. From $1.68, in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 4
- Lifecycle
- OBSOLETE
- Datasheet
- LM2598S-ADJ Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.6800(MOQ 1)
- Temp Range
- -25.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Adjustable output voltage via external resistor divider, suitable for a wide range of DC/DC conversion applications
- Supports 4.5V to 40V input voltage range with up to 3A continuous output current
- Current-mode PWM control at fixed 150kHz switching frequency for excellent line and load regulation
- Integrated output switch with thermal shutdown and current limiting for robust protection
- Available in D2PAK (TO-263) 7-lead surface-mount package for easy PCB integration
Applications
The LM2598S-ADJ is widely used in industrial power supplies, telecommunications equipment, and embedded systems requiring an efficient step-down DC/DC conversion. Its adjustable output and wide input range make it ideal for battery-powered devices, automotive electronics, and distributed power architectures. It is also commonly deployed in point-of-load regulators for FPGA, DSP, and microcontroller power rails.
Specifications
| Pbfree Code | No |
| YTEOL | 0 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 40V |
| Input Voltage-Min | 4.5V |
| JESD-30 Code | R-PSSO-G7 |
| JESD-609 Code | e0 |
| Number of Functions | 1 |
| Output Current-Max | 2.6A |
| Output Voltage-Max | 1.28V |
| Output Voltage-Min | 1.18V |
| Output Voltage-Nom | 1.23V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SMSIP7H,.55,50TB |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 235 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 173kHz |
| Technology | BIPOLAR |
| Temperature Grade | OTHER |
| Terminal Finish | TIN LEAD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | 20 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the output voltage range of the LM2598S-ADJ?
The LM2598S-ADJ features an adjustable output voltage set by an external resistor divider. The output can be programmed from approximately 1.23V up to 37V, supporting a wide range of applications requiring different supply voltages.
What are the key operating parameters of the LM2598S-ADJ?
The LM2598S-ADJ operates with an input voltage range of 4.5V to 40V and delivers up to 3A of continuous output current. It uses current-mode PWM control at a fixed 150kHz switching frequency, which simplifies external component selection for the inductor and capacitors.
What applications is the LM2598S-ADJ suitable for?
The LM2598S-ADJ is suitable for industrial power supplies, automotive electronics, telecom equipment, and embedded microcontroller or FPGA power rails. Its high input voltage tolerance and adjustable output make it a versatile choice for step-down voltage regulation in battery and mains-powered systems.
What package does the LM2598S-ADJ come in, and are there alternatives?
The LM2598S-ADJ is offered in a 7-lead D2PAK (TO-263) surface-mount package, which provides excellent thermal performance for up to 3A loads. Alternatives include the LM2598N-ADJ in a through-hole DIP package, or the LM2596 series for similar applications with a 150kHz switching frequency.
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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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $4.2000 | $4.20 |
| 18+ | $4.0000 | $72.00 |
| 64+ | $3.7000 | $236.80 |
| 96+ | $1.8200 | $174.72 |
| 276+ | $1.6800 | $463.68 |
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