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DC/DC 切換穩壓器
DC/DC 控制器

LM3488Q-Q1

現行

具 5µA 關斷電流且適用切換調節器的 40V 大範圍 VIN 低側 N 通道控制器

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LM5155-Q1 現行 2.2MHz 寬 VIN、1.5A MOSFET 驅動器、非同步升壓控制器、符合 AEC-Q100 認證 For applications requiring lower quiescent current or higher efficiency.

LM3488Q-Q1

現行
產品規格表 立即訂購

產品詳細資料

Rating Automotive Topology Boost, Flyback, Forward, SEPIC Vin (max) (V) 40 Vin (min) (V) 2.97 Vout (max) (V) 500 Vout (min) (V) 1.26 Features Adjustable current limit, Enable, Frequency synchronization, Light-load efficiency, Nonsynchronous rectification, Prebias startup Duty cycle (max) (%) 100 Iq (typ) (A) 0.0027 Operating temperature range (°C) -40 to 125
Rating Automotive Topology Boost, Flyback, Forward, SEPIC Vin (max) (V) 40 Vin (min) (V) 2.97 Vout (max) (V) 500 Vout (min) (V) 1.26 Features Adjustable current limit, Enable, Frequency synchronization, Light-load efficiency, Nonsynchronous rectification, Prebias startup Duty cycle (max) (%) 100 Iq (typ) (A) 0.0027 Operating temperature range (°C) -40 to 125
VSSOP (DGK) 8 14.7 mm² (3 mm × 4.9 mm)
  • Automotive grade product, AEC-Q100 qualified
  • 8-lead VSSOP package
  • Internal push-pull driver with 1A peak current capability
  • Current limit and thermal shutdown
  • Frequency compensation optimized with a capacitor and a resistor
  • Internal soft start
  • Current mode operation
  • Undervoltage lockout with hysteresis
  • Key specifications:
    • Wide supply voltage range of 2.97V to 40V
    • 100kHz to 1MHz adjustable and synchronizable clock frequency
    • ±1.5% (overtemperature) internal reference
    • 5µA shutdown current (overtemperature)
  • Create a custom design using the LM3488Q-Q1 with the WEBENCH® Power Designer
  • Automotive grade product, AEC-Q100 qualified
  • 8-lead VSSOP package
  • Internal push-pull driver with 1A peak current capability
  • Current limit and thermal shutdown
  • Frequency compensation optimized with a capacitor and a resistor
  • Internal soft start
  • Current mode operation
  • Undervoltage lockout with hysteresis
  • Key specifications:
    • Wide supply voltage range of 2.97V to 40V
    • 100kHz to 1MHz adjustable and synchronizable clock frequency
    • ±1.5% (overtemperature) internal reference
    • 5µA shutdown current (overtemperature)
  • Create a custom design using the LM3488Q-Q1 with the WEBENCH® Power Designer

The LM3488Q-Q1 is a versatile low-side N-FET high-performance controller for switching regulators. This device is designed for use in topologies requiring low-side FET, such as boost, flyback, or SEPIC. Moreover, the LM3488Q-Q1 can be operated at extremely high switching frequency to reduce the overall design size. The switching frequency of LM3488Q-Q1 can be adjusted to any value from 100kHz to 1MHz by using a single external resistor or by synchronizing the device to an external clock. Current mode control provides excellent bandwidth and transient response, besides cycle-by-cycle current limiting. Output current can be programmed with a single external resistor.

The LM3488Q-Q1 has built-in features such as thermal shutdown, short-circuit protection, and overvoltage protection. Power-saving shutdown mode reduces the total supply current to 5µA and allows power supply sequencing. Internal soft-start limits the inrush current at start-up.

The LM3488Q-Q1 is a versatile low-side N-FET high-performance controller for switching regulators. This device is designed for use in topologies requiring low-side FET, such as boost, flyback, or SEPIC. Moreover, the LM3488Q-Q1 can be operated at extremely high switching frequency to reduce the overall design size. The switching frequency of LM3488Q-Q1 can be adjusted to any value from 100kHz to 1MHz by using a single external resistor or by synchronizing the device to an external clock. Current mode control provides excellent bandwidth and transient response, besides cycle-by-cycle current limiting. Output current can be programmed with a single external resistor.

The LM3488Q-Q1 has built-in features such as thermal shutdown, short-circuit protection, and overvoltage protection. Power-saving shutdown mode reduces the total supply current to 5µA and allows power supply sequencing. Internal soft-start limits the inrush current at start-up.
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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 LM3488Q-Q1 High-Efficiency Controller for Boost, SEPIC and Fly-Back DC-DC Converters datasheet (Rev. A) PDF | HTML 2026/3/11

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

計算工具

FLYBUCK-FLYBACK-DESIGN-CALC — Flybuck / Flyback Calculator

此工具協助電源供應工程師根據規格選擇正確的隔離式 DC-DC 拓撲結構。根據選擇的拓撲結構，計算機還會推薦適合設計的 IC。

支援產品和硬體
計算工具

LM3478-88-BOOST-CALC — LM3478-88 quick start calculator for boost

LM3478-88 quick start calculator for boost topology
支援產品和硬體
計算工具

LM3478-88-FLYBACK-CALC — LM3478-88 quick start calculator for Flyback

The LM3478-88 Flyback quick start calculator tool assists in the configuration of the power stage and the external components for the LM3478 and LM3488 devices
支援產品和硬體
計算工具

LM3478-88-SEPIC-CALC — LM3478-88 quick start calculator for SEPIC

The LM3478-88 SEPIC quick start calculator tool assists in the configuration of the power stage and the external components for the LM3478 and LM3488.
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