Chat with us, powered by LiveChat
0
商品項目:16456
庫存現貨

圖片僅供參考
UC3842BL-D08-T DIP-8 UTC
商品名稱 LINEAR INTEGRATED CIRCUIT
訂購數量
依數量訂價
NTD
FLYiNG 零件編號 ICUC3842BLD08TUTC
FLYiNG 庫存現貨 電洽/Contact
製造商 UTC
製造商零件編號 UC3842BL-D08-T
說明 UC3842BL-D08-T DIP-8 UTC
無鉛狀態 / RoHS 指令狀態 RoHS
封裝／外殼 DIP-8
標準包裝數量 50/管 2K/BOX
文件:UC3842B/3843B 無衝突金屬聲明書
UC3842B/3843B LINEAR INTEGRATED CIRCUIT
HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS

DESCRIPTION
The UTC UC3842B/3843B are high performance fixed frequency current mode controllers that specifically designed for Off-Line and DC to DC converter applications with minimal external parts count.
The differences between UC3842B and UC3843B are the under-voltage lockout thresholds. The UC3842B ideally suited to off-line applications with UVLO thresholds of 16V(ON) and 10V(OFF), and UC3843B has UVLO thresholds of 8.4V(ON) and 7.6V(OFF) for lower voltage applications.

FEATURES
  • Operation output switching frequency up to 500 kHz
  • Automatic feed forward compensation
  • Latching PWM for cycle-by-cycle current limiting
  • High current totem pole output
  • Internally trimmed reference with under voltage lockout
  • UVLO with hysteresis
  • Low startup and operating current​

UC3842B/3843B 線性集成電路
高性能電流模式 PWM 控制器

描述

UTC UC3842B/3843B 是高性能的固定頻率電流模式控制器，專為離線和直流轉直流（DC to DC）轉換器應用設計，僅需最少的外部元件。
UC3842B 和 UC3843B 的主要區別在於欠壓鎖定（UVLO）閾值：

  • UC3842B 適用於離線應用，UVLO 閾值為 16V（開啟）和 10V（關閉）。
  • UC3843B 適用於低電壓應用，UVLO 閾值為 8.4V（開啟）和 7.6V（關閉）。

特點

  • 工作輸出切換頻率高達 500 kHz
  • 自動前饋補償
  • 具有逐週期限流功能的鎖存式 PWM
  • 高電流圖騰柱式輸出
  • 帶欠壓鎖定功能的內部精密修整參考電壓
  • 帶有遲滯特性的欠壓鎖定（UVLO）
  • 低啟動和工作電流