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DC/DC 轉換器

SM72485

現行

100V、150 mA 恒定導通時間降壓切換穩壓器

立即訂購
產品規格表

現在提供此產品的更新版本

open-in-new 比較替代產品
功能相同，但針腳輸出與所比較的裝置不同。
LM5163 現行 具有超低 IQ 的 100V 輸入、0.5A 同步降壓 DC/DC 轉換器 Ultra-low EMI emission.

SM72485

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Buck Iout (max) (A) 0.15 Vin (max) (V) 95 Vin (min) (V) 6 Vout (max) (V) 85 Vout (min) (V) 2.5 Features Enable Control mode Constant on-time (COT) Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000485 Duty cycle (max) (%) 99
Rating Catalog Topology Buck Iout (max) (A) 0.15 Vin (max) (V) 95 Vin (min) (V) 6 Vout (max) (V) 85 Vout (min) (V) 2.5 Features Enable Control mode Constant on-time (COT) Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000485 Duty cycle (max) (%) 99
WSON (NGU) 8 16 mm² (4 mm × 4 mm) VSSOP (DGK) 8 14.7 mm² (3 mm × 4.9 mm)
  • Operating Input Voltage: 6 V to 95 V
  • Integrated 100-V, N-Channel Buck Switch
  • Internal Start-Up Regulator
  • No Loop Compensation Required
  • Ultra-Fast Transient Response
  • On-time Varies Inversely With Input Voltage
  • Operating Frequency Remains Constant With Varying Line Voltage and Load Current
  • Adjustable Output Voltage From 2.5 V
  • Highly Efficient Operation
  • Precision Internal Reference
  • Low Bias Current
  • Intelligent Current Limit
  • Thermal Shutdown
  • Package
    • VSSOP (3 mm × 3 mm)
    • WSON (4 mm × 4 mm)
  • Operating Input Voltage: 6 V to 95 V
  • Integrated 100-V, N-Channel Buck Switch
  • Internal Start-Up Regulator
  • No Loop Compensation Required
  • Ultra-Fast Transient Response
  • On-time Varies Inversely With Input Voltage
  • Operating Frequency Remains Constant With Varying Line Voltage and Load Current
  • Adjustable Output Voltage From 2.5 V
  • Highly Efficient Operation
  • Precision Internal Reference
  • Low Bias Current
  • Intelligent Current Limit
  • Thermal Shutdown
  • Package
    • VSSOP (3 mm × 3 mm)
    • WSON (4 mm × 4 mm)

The SM72485 step-down switching regulator features all of the functions required to implement a low cost, efficient, Buck bias regulator. This high voltage regulator contains an 100-V N-channel buck switch. The device is easy to implement and is provided in the VSSOP and the thermally enhanced WSON package. The regulator is based on a control scheme using an on-time inversely proportional to VIN. This feature allows the operating frequency to remain relatively constant. The control scheme requires no loop compensation. An intelligent current limit is implemented with forced off-time, which is inversely proportional to VOUT. This scheme ensures short circuit control while providing minimum foldback. Other features include: Thermal shutdown, VCC undervoltage lockout, gate drive undervoltage lockout, maximum duty cycle limiter, and a precharge switch.

The SM72485 step-down switching regulator features all of the functions required to implement a low cost, efficient, Buck bias regulator. This high voltage regulator contains an 100-V N-channel buck switch. The device is easy to implement and is provided in the VSSOP and the thermally enhanced WSON package. The regulator is based on a control scheme using an on-time inversely proportional to VIN. This feature allows the operating frequency to remain relatively constant. The control scheme requires no loop compensation. An intelligent current limit is implemented with forced off-time, which is inversely proportional to VOUT. This scheme ensures short circuit control while providing minimum foldback. Other features include: Thermal shutdown, VCC undervoltage lockout, gate drive undervoltage lockout, maximum duty cycle limiter, and a precharge switch.
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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 SM72485 100-V, 150-mA Constant On-Time Buck Switching Regulator datasheet (Rev. E) PDF | HTML 2016/12/16
應用說明 AN-2122 SM3320-RF-EV Reference Design (Rev. E) 2013/5/6
應用說明 SM3320-BATT-EV Charge Controller Reference Design (Rev. C) 2013/5/6

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參考設計

TIDA-00320 — 適用於 PLC 的八通道平行 0.5A 低壓側數位輸出模組參考設計

數位輸出模組是 PLC/PAC 或 DCS 中的標準元件，用於控制致動器、馬達和其他電阻、電容或電感性負載。客戶將受益於這款帶平行介面的整合式保護低壓側驅動器，因為它使 MCU 介面與 Beaglebone Black 一起測試時更為方便。此設計能夠以小型尺寸在所有 8 通道上提供 0.5A，而不影響熱管理

支援產品和硬體
封裝 針腳 CAD 符號、佔位空間與 3D 模型
WSON (NGU) 8 Ultra Librarian
VSSOP (DGK) 8 Ultra Librarian
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