产品详细信息

Vin (Min) (V) 3.5 Vin (Max) (V) 42 Vout (Min) (V) 0.8 Vout (Max) (V) 36 Iq (Typ) (uA) 9.5 Switching frequency (Min) (kHz) 100 Switching frequency (Max) (kHz) 2200 Features Adjustable Current Limit, Enable, Frequency Synchronization, Light Load Efficiency, Load Disconnect, Phase Interleaving, Power Good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification, UVLO Adjustable Operating temperature range (C) -40 to 150 Regulated outputs (#) 1 TI functional safety category Functional Safety-Capable Number of phases 2 Rating Automotive
Vin (Min) (V) 3.5 Vin (Max) (V) 42 Vout (Min) (V) 0.8 Vout (Max) (V) 36 Iq (Typ) (uA) 9.5 Switching frequency (Min) (kHz) 100 Switching frequency (Max) (kHz) 2200 Features Adjustable Current Limit, Enable, Frequency Synchronization, Light Load Efficiency, Load Disconnect, Phase Interleaving, Power Good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification, UVLO Adjustable Operating temperature range (C) -40 to 150 Regulated outputs (#) 1 TI functional safety category Functional Safety-Capable Number of phases 2 Rating Automotive
VQFN (RGY) 24
  • AEC-Q100 qualified for automotive applications:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Integrated EMI mitigation
    • Selectable dual random spread spectrum (DRSS) feature for enhanced EMI performance across low and high-frequency bands
    • Optimized for CISPR 25 Class 5 requirements
  • Versatile synchronous buck DC/DC controller
    • Wide input voltage range of 3.5 V to 42 V
    • 1% accurate, fixed 3.3-V, 5-V, 12-V, or adjustable outputs from 0.8 V to 36 V
    • 150°C maximum junction temperature
    • Lossless DCR or shunt current sensing
    • Shutdown mode current: 2.2 µA
    • No-load standby current: 9 µA
  • Switching frequency from 100 kHz to 2.2 MHz
    • SYNC in and SYNC out capability
    • Selectable PFM or FPWM modes
  • Inherent protection features for robust design
    • Internal hiccup mode overcurrent protection
    • ENABLE and PGOOD functions
    • VCC, VDDA, and gate-drive UVLO protection
    • Internal or external loop compensation
    • Thermal shutdown protection with hysteresis
  • Create a custom design using the LM25148-Q1 with WEBENCH Power Designer
  • AEC-Q100 qualified for automotive applications:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Integrated EMI mitigation
    • Selectable dual random spread spectrum (DRSS) feature for enhanced EMI performance across low and high-frequency bands
    • Optimized for CISPR 25 Class 5 requirements
  • Versatile synchronous buck DC/DC controller
    • Wide input voltage range of 3.5 V to 42 V
    • 1% accurate, fixed 3.3-V, 5-V, 12-V, or adjustable outputs from 0.8 V to 36 V
    • 150°C maximum junction temperature
    • Lossless DCR or shunt current sensing
    • Shutdown mode current: 2.2 µA
    • No-load standby current: 9 µA
  • Switching frequency from 100 kHz to 2.2 MHz
    • SYNC in and SYNC out capability
    • Selectable PFM or FPWM modes
  • Inherent protection features for robust design
    • Internal hiccup mode overcurrent protection
    • ENABLE and PGOOD functions
    • VCC, VDDA, and gate-drive UVLO protection
    • Internal or external loop compensation
    • Thermal shutdown protection with hysteresis
  • Create a custom design using the LM25148-Q1 with WEBENCH Power Designer

The LM25148-Q1 is a 42-V, 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 interleaved mode (paralleled output) with accurate current sharing for high-current applications. It can operate at input voltages as low as 3.5 V, 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 randomized modulations mitigates EMI across lower and higher radio-frequency bands, respectively. This hybrid technique aligns with the multiple resolution bandwidth (RBW) settings specified in industry-standard EMC tests.

The LM25148-Q1 is a 42-V, 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 interleaved mode (paralleled output) with accurate current sharing for high-current applications. It can operate at input voltages as low as 3.5 V, 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 randomized modulations mitigates EMI across lower and higher radio-frequency bands, respectively. This hybrid technique aligns with the multiple resolution bandwidth (RBW) settings specified in industry-standard EMC tests.

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LM25149 预发布 具有超低 IQ 和集成有源 EMI 滤波器的 42V 同步降压直流/直流控制器 Pin-to-pin, non-automotive equivalent with active EMI filter (AEF)
LM25149-Q1 预发布 具有超低 IQ 和集成有源 EMI 滤波器的 42V 汽车类同步降压直流/直流控制器 Pin-to-pin with active EMI filter (AEF)

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类型 标题 下载最新的英文版本 日期
* 数据表 LM25148-Q1 42-V Automotive Synchronous Buck DC/DC Controller with Ultra-Low IQ and Dual Random Spread Spectrum 数据表 2021年 6月 28日
功能安全信息 LM25148-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA 2021年 9月 28日
用户指南 LM25149-Q1 EVM User's Guide 2021年 3月 18日

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评估板

LM25149-Q1EVM-2100 — LM25149-Q1 5.5V 至 36V、低 IQ、同步降压直流/直流控制器评估模块

LM25149-Q1EVM-2100 高密度评估模块 (EVM) 旨在展示 LM25149-Q1 高性能汽车类同步降压直流/直流控制器的性能。它在 5.5V 至 36V 的宽输入电压范围内工作,可提供 5V 固定输出电压以及优于 1% 的设定点精度和高达 8A 的输出电流。LM25149-Q1 可提供先进的 EMI 性能和超低的 IQ。故障期间的稳压器特性包括:欠压锁定、内部软启动、间断模式过流保护和热关断。此外还提供了开漏 PGOOD 指示器和同步输入/同步输出特性。
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数量限制: 2
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LM5148-LM25148DESIGN-CALC — LM5148 和 LM25148 控制器快速入门设计工具

欢迎使用面向 LM5148、LM5148-Q1、LM25148 和 LM25148-Q1 的快速入门设计工具。此独立工具可帮助电源工程师设计基于上述控制器系列的直流/直流降压稳压器。这样,用户可以快速实现优化的设计,从而满足应用要求。
PCB 布局

LM25149-Q1EVM-2100 PCB Layout Files

SNVR501.ZIP (1990 KB)
封装 引脚 下载
VQFN (RGY) 24 了解详情

订购与质量

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  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/FIT 估算
  • 材料成分
  • 认证摘要
  • 持续可靠性监测

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