LM34926 LM34926 統合 2 次側バイアス・レギュレータ、絶縁 DC/DC コンバータ用 | TIJ.co.jp

LM34926
この製品はすでに市場にリリースされており、ご購入できます。 一部の製品は、より新しい代替品を使用できる可能性があります。
LM34926 統合 2 次側バイアス・レギュレータ、絶縁 DC/DC コンバータ用

 

概要

The LM34926 regulator features all of the functions needed to implement a low-cost, efficient, isolated bias regulator. This high-voltage regulator contains two 100-V N-channel MOSFET switches — a high-side buck switch and a low-side synchronous switch. The constant on-time (COT) control scheme employed in the LM34926 requires no loop compensation and provides excellent transient response. The regulator operates with an on-time control that is inversely proportional to the input voltage. This feature allows the operating frequency to remain relatively constant. An intelligent peak current limit is implemented with integrated sense circuit. Other features include a programmable input undervoltage comparator to inhibit operation during low-voltage conditions. Protection features include thermal shutdown and VCC Undervoltage Lockout (UVLO). The LM34926 device is offered in WSON-8 and SO PowerPAD-8 plastic packages.

特長

  • Wide 7.5-V to 100-V Input Range
  • Integrated 300-mA High-Side
    and Low-Side Switches
  • No Schottky Required
  • Constant On-Time Control
  • No Loop Compensation Required
  • Ultra-Fast Transient Response
  • Nearly Constant Operating Frequency
  • Intelligent Peak Current Limit
  • Adjustable Output Voltage From 1.225 V
  • Precision 2% Feedback Reference
  • Frequency Adjustable to 1 MHz
  • Adjustable Undervoltage Lockout (UVLO)
  • Remote Shutdown
  • Thermal Shutdown
  • Packages:
    • WSON-8
    • SO PowerPAD™-8 Packages
  • Create a Custom Design Using the LM34926 With the WEBENCH® Power Designer

All trademarks are the property of their respective owners.

機能一覧

他の製品と比較 Fly-Buck コンバータ メール Excelへダウンロード
Part number オーダー・オプション Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Switching frequency (Max) (kHz) Soft start Features Operating temperature range (C) Iout (A) Topology
LM34926 ご注文 9     100     1.25     90     1000     None     Adjustable UVLO
Enable    
-40 to 125     0.3     Flybuck