The LM25148-Q1 is a 42V, ultra-low IQ synchronous buck DC/DC controller for high-current, single-output applications. The controller uses a peak current-mode control architecture for easy loop compensation, fast transient response, and excellent load and line regulation. The LM25148-Q1 can be set up in dual-phase mode (paralleled output) with accurate current sharing for high-current applications. The device can operate at input voltages as low as 3.5V, at nearly 100% duty cycle if needed.
The LM25148-Q1 has a unique EMI reduction feature known as Dual Random Spread Spectrum (DRSS). Combining low-frequency triangular and high-frequency random modulations mitigates EMI disturbances across lower and higher frequency bands, respectively. This hybrid technique aligns with the multiple resolution bandwidth (RBW) settings specified in industry-standard EMC tests.
Additional features of the LM25148-Q1 include 150°C maximum junction temperature operation, user-selectable diode emulation for lower current consumption at light-load conditions, open-drain power-good flag for fault reporting and output monitoring, precision enable input, monotonic start-up into prebiased load, integrated VCC bias supply regulator, internal 3ms soft-start time, and thermal shutdown protection with automatic recovery.
| Tipo | Título | Fecha | ||
|---|---|---|---|---|
| * | Data sheet | LM25148-Q1 42V, Automotive, Synchronous, Buck DC/DC Controller With Ultra-Low IQ and Dual Random Spread Spectrum datasheet (Rev. B) | PDF | HTML | 21 feb 2025 |
| Certificate | LM25148B-Q1EVM2100 EU Declaration of Conformity (DoC) | 03 oct 2024 | ||
| Test report | Power Delivery Reference Design for AMD Versal™ AI Edge Series | PDF | HTML | 25 mar 2024 | |
| Application note | How to Implement a Simple Constant Current Regulation Scheme to a PCM Based Buck | PDF | HTML | 16 ago 2023 | |
| User guide | LM25149-Q1 EVM User's Guide (Rev. A) | PDF | HTML | 29 abr 2022 | |
| Functional safety information | LM25148-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA | PDF | HTML | 28 sep 2021 |
Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.
El módulo de evaluación (EVM) LM25148B-Q1 está diseñado para usar un carril de entrada de alta tensión regulado o no regulado de 5.5 V a 36 V para producir una tensión de salida estrictamente regulada de 5 V en corrientes de carga de hasta 10 A. Este diseño CC/CC de amplio rango de VIN ofrece una (...)
El módulo de evaluación (EVM) de alta densidad LM5149‑Q1EVM‑400 está diseñado para mostrar el rendimiento del controlador reductor de CC/CC síncrono de alto rendimiento para automoción LM5149‑Q1. El EVM funciona en un amplio rango de tensión de entrada de 15 V a 72 V para brindar una salida fija de (...)
| Encapsulado | Pines | Símbolos CAD, huellas y modelos 3D |
|---|---|---|
| VQFN (RGY) | 24 | Ultra Librarian |
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LM(2)5148/-Q1 quickstart calculator
Welcome to the quickstart design calculator tool for the LM5148, LM5148-Q1, LM25148 and LM25148-Q1. This standalone tool facilitates and assists the power supply engineer with the design of a DC/DC buck regulator based on the LM(2)5148/-Q1 controller family. As such, the user can expeditiously arrive at an optimized design to meet the application requirements.