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LM5125A-Q1

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Wide-VIN 2.2MHz dual-phase boost controller with VOUT tracking

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LM5125A-Q1

正在供货
数据表 立即订购

产品详情

Rating Automotive Topology Boost Controller Vin (max) (V) 45 Vin (min) (V) 2.5 Vout (max) (V) 60 Vout (min) (V) 6 Control mode current mode control Features Adjustable current limit, Adjustable soft start, Adjustable switching frequency, Analog current monitor, Automatic Light Load Management, Automotive load dump, Bypass Mode, Chip-enable control pin, Cycle-by-cycle overcurrent protection, External Sync, Fixed PWM Mode, Multiphase, Overcurrent protection with adjustable delay, Power good, Programmable dead time, Spread Spectrum, Tracking Operating temperature range (°C) -40 to 150 Iq (typ) (µA) 250 Duty cycle (max) (%) 99.2 TI functional safety category Functional Safety-Capable EMI features Frequency Dithering, Spread Spectrum
Rating Automotive Topology Boost Controller Vin (max) (V) 45 Vin (min) (V) 2.5 Vout (max) (V) 60 Vout (min) (V) 6 Control mode current mode control Features Adjustable current limit, Adjustable soft start, Adjustable switching frequency, Analog current monitor, Automatic Light Load Management, Automotive load dump, Bypass Mode, Chip-enable control pin, Cycle-by-cycle overcurrent protection, External Sync, Fixed PWM Mode, Multiphase, Overcurrent protection with adjustable delay, Power good, Programmable dead time, Spread Spectrum, Tracking Operating temperature range (°C) -40 to 150 Iq (typ) (µA) 250 Duty cycle (max) (%) 99.2 TI functional safety category Functional Safety-Capable EMI features Frequency Dithering, Spread Spectrum
VQFN (RHB) 32 25 mm² 5 x 5
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: TA = –40°C to +125°C
  • Functional Safety-Capable
  • Input voltage 4.5V to 42V
    • Minimum 2.5V for V(BIAS) ≥ 4.5V or VOUT ≥ 6V
  • Output Voltage 6V to 60V
    • 2% accuracy, internal feedback resistors
    • Bypass operation for VI > VOUT
    • Dynamic output voltage tracking
      • Digital PWM tracking (DTRK)
      • Analog tracking (ATRK)
    • Overvoltage protection (64V, 50V, 35V, 28.5V)
  • Low shutdown IQ of 2µA
  • Low operating IQ of 1.4mA
  • Stacking with interleaved multiphase operation
    • Up to 4-phases without external clock
  • Switching frequency from 100kHz to 2.2MHz
    • Synchronization to external clock (SYNCIN)
    • Dynamically selectable switching modes (FPWM, diode emulation)
    • Spread spectrum (DRSS)
  • Selectable dead time (14ns to 200ns)
  • Current sense resistor or DCR sensing
  • Average inductor current monitor
  • Average input current limit
    • Programmable current limit
    • Selectable delay time
  • Power-good indicator
  • Programmable VI undervoltage lockout (UVLO)
  • Lead-less VQFN-32 package with wettable flanks
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: TA = –40°C to +125°C
  • Functional Safety-Capable
  • Input voltage 4.5V to 42V
    • Minimum 2.5V for V(BIAS) ≥ 4.5V or VOUT ≥ 6V
  • Output Voltage 6V to 60V
    • 2% accuracy, internal feedback resistors
    • Bypass operation for VI > VOUT
    • Dynamic output voltage tracking
      • Digital PWM tracking (DTRK)
      • Analog tracking (ATRK)
    • Overvoltage protection (64V, 50V, 35V, 28.5V)
  • Low shutdown IQ of 2µA
  • Low operating IQ of 1.4mA
  • Stacking with interleaved multiphase operation
    • Up to 4-phases without external clock
  • Switching frequency from 100kHz to 2.2MHz
    • Synchronization to external clock (SYNCIN)
    • Dynamically selectable switching modes (FPWM, diode emulation)
    • Spread spectrum (DRSS)
  • Selectable dead time (14ns to 200ns)
  • Current sense resistor or DCR sensing
  • Average inductor current monitor
  • Average input current limit
    • Programmable current limit
    • Selectable delay time
  • Power-good indicator
  • Programmable VI undervoltage lockout (UVLO)
  • Lead-less VQFN-32 package with wettable flanks

The LM5125A-Q1 is a stackable, dual-phase, synchronous boost controller. The device provides a regulated output voltage for lower or equal input voltage also supporting VI to VOUT bypass mode to save power. Stack two devices with or without external clock.

Dynamically program VOUT using the analog or digital ATRK/DTRK function. VI is supported down to 2.5V after start-up as the internal VCC supply is automatically switched from VBIAS to VOUT for VBIAS < 4.5V. The fixed switching frequency is set between 100kHz and 2.2MHz through a resistor on the RT pin or the SYNCIN clock. The switching modes FPWM or diode emulation can be changed during operation.

The implemented protections peak current limit, average input current limit, average inductor current monitor, over and undervoltage protection, and the thermal shutdown protect the device and the application.

The LM5125A-Q1 is a stackable, dual-phase, synchronous boost controller. The device provides a regulated output voltage for lower or equal input voltage also supporting VI to VOUT bypass mode to save power. Stack two devices with or without external clock.

Dynamically program VOUT using the analog or digital ATRK/DTRK function. VI is supported down to 2.5V after start-up as the internal VCC supply is automatically switched from VBIAS to VOUT for VBIAS < 4.5V. The fixed switching frequency is set between 100kHz and 2.2MHz through a resistor on the RT pin or the SYNCIN clock. The switching modes FPWM or diode emulation can be changed during operation.

The implemented protections peak current limit, average input current limit, average inductor current monitor, over and undervoltage protection, and the thermal shutdown protect the device and the application.
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类型 标题 下载最新的英语版本 日期
* 数据表 LM5125 A -Q1, Wide-VIN, Dual-Phase, Automotive, Boost Controller With VOUT Tracking 数据表 PDF | HTML 2025年 9月 26日
功能安全信息 LM5125-Q1, LM5125A-Q1, and LM51251A-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A) PDF | HTML 2025年 9月 9日

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评估板

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LM5125AEVM-BST 评估模块展示了 LM5125A-Q1 宽输入电压同步双相升压控制器的特性和性能。该 EVM 旨在简化配置，让用户能够在模块上评估不同状况。该 EVM 默认提供 24V/240W 输出。通过 ATRK/DTRK 引脚动态调整输出电压。
用户指南: PDF | HTML
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计算工具

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支持的产品和硬件

支持的产品和硬件

产品
交流/直流和直流/直流控制器（外部 FET）
LM5125-Q1 — 具有 VOUT 跟踪功能的宽输入电压、2.2MHz 双相升压控制器 LM5125A-Q1 — Wide-VIN 2.2MHz dual-phase boost controller with VOUT tracking
硬件开发
评估板
LM5125EVM-BST — LM5125 评估模块 LM5125AEVM-BST — LM5125AEVM-BST 评估模块
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封装 引脚 CAD 符号、封装和 3D 模型
VQFN (RHB) 32 Ultra Librarian
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包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
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  • 持续可靠性监测
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  • 封装厂地点

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