Texas Instruments LM25184QNGURQ1
| Parameters | |
|---|---|
| Output Type | Fixed |
| Number of Outputs | 1 |
| Current - Output | 1A |
| Supplier Device Package | 8-WSON (4x4) |
| Output Configuration | Positive |
| Function | Step-Up/Step-Down |
| Topology | Flyback |
| Frequency - Switching | 12kHz ~ 350kHz |
| Synchronous Rectifier | No |
| Voltage - Output (Min/Fixed) | 12V |
| Voltage - Output (Max) | - |
| Voltage - Input (Min) | 4.5V |
| Package | Tape & Reel (TR) |
| Product Status | Active |
| Base Product Number | LM25184 |
| REACH Status | REACH Unaffected |
| Standard Package | 4,500 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
| Series | - |
| Moisture Sensitivity Level (MSL) | 2 (1 Year) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | 8-WDFN Exposed Pad |
| Mfr | Texas Instruments |
| Mounting Type | Surface Mount, Wettable Flank |
| Operating Temperature | -40°C ~ 150°C (TJ) |
| Voltage - Input (Max) | 42V |
LM25184QNGURQ1 synchronous buck controller Flyback Switching Regulator IC
The LM25184QNGURQ1 from Texas Instruments is an automotive-grade, synchronous buck controller designed for high-efficiency, high-voltage DC-DC conversion applications in demanding automotive environments. This advanced controller operates over a wide input voltage range of 3.5V to 42V, making it suitable for automotive systems that must withstand load-dump conditions and other voltage transients. Housed in a compact 4mm × 4mm VQFN package, the device features a peak current mode control architecture with emulated ripple, providing fast transient response and stable operation with minimal output capacitance. AEC-Q100 qualified for automotive applications, the LM25184QNGURQ1 is ideal for advanced driver assistance systems (ADAS), infotainment, and powertrain systems where reliability, efficiency, and thermal performance are critical.
Key Features
This buck controller integrates a high-side gate driver capable of driving external N-channel MOSFETs with adjustable gate drive voltage from 5V to 12V, optimizing switching losses for different MOSFET selections. It features a programmable switching frequency from 100kHz to 2.2MHz, allowing designers to optimize efficiency and solution size. The device includes comprehensive protection features such as cycle-by-cycle current limiting, hiccup mode short-circuit protection, thermal shutdown, and input undervoltage lockout. With its emulated ripple control scheme, the LM25184QNGURQ1 maintains stability with very low ESR output capacitors, including ceramic types, and provides excellent load transient response. The controller also supports pre-biased output start-up and has a low 25μA shutdown current for improved system efficiency.
Alternative DC-DC Controller Parts
● LT8640SIV#PBF (Analog Devices): A silent switcher synchronous buck regulator with 42V input capability and high efficiency for noise-sensitive applications.
● MAX20078ATBA/V+ (Maxim Integrated): A 36V synchronous buck controller with spread spectrum for reduced EMI in automotive systems.
● TPS54526QDDARQ1 (Texas Instruments): A 42V input, 5A synchronous buck converter with integrated MOSFETs for space-constrained automotive applications.
● LM5140QRGYTQ1 (Texas Instruments): A 65V ultra-low IQ synchronous buck controller with wide voltage range for harsh automotive environments.
