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LTC3721-1是Push-Pull PWM Controller

LTC3721-1 - Push-Pull PWM Controller

LTC3721-1 - Push-Pull PWM Controller - Linear Technology(凌力尔特)

功能描述

The LTC3721-1 push-pull PWM controller provides all of the control and protection functions necessary for compact and highly efficient, isolated power converters. High integration minimizes external component count, while preserving design flexibility.

The robust push-pull output stages switch at half the oscillator frequency. Dead-time is independently programmed with an external resistor. A UVLO program input provides precise system turn-on and turn off voltages. The LTC3721-1 features peak current mode control with programmable slope compensation and leading edge blanking.

The LTC3721-1 features extremely low operating and start-up currents and reliable short-circuit and overtemperature protection. The LTC3721-1 is offered in 16-pin SSOP and (4mm × 4mm) QFN packages.

特点
  • High Efficiency Push-Pull PWM
  • 1.5A Sink, 1A Source Output Drivers
  • Adjustable Push-Pull Dead-Time
  • Adjustable System Undervoltage Lockout and Hysteresis
  • Adjustable Leading Edge Blanking
  • Low Start-Up and Quiescent Currents
  • Current Mode Operation
  • Single Resistor Slope Compensation
  • VCC UVLO and 25mA Shunt Regulator
  • Programmable Fixed Frequency Operation to 1MHz
  • Soft-Start, Cycle-by-Cycle Current Limiting and Hiccup Mode Short-Circuit Protection
  • 5V, 15mA Low Dropout Regulator
  • 16-Pin SSOP and (4mm x 4mm) QFN Packages
  • 应用
  • Telecommunications, Infrastructure Power Systems
  • Distributed Power Architectures
  • Server Power Supplies
  • High Density Power Modules
  • 以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格(美元)
    器件型号 封装 温度 价格 (以 1 ~ 99 片为批量) 价格 (以 1000 片为批量)
    LTC3721EGN-1 SSOP-16 E $6.52 $4.45
    LTC3721EGN-1#PBF SSOP-16 E $6.52 $4.45
    LTC3721EGN-1#TR SSOP-16 E $4.51
    LTC3721EGN-1#TRPBF SSOP-16 E $4.51
    LTC3721EUF-1 4x4 QFN-16 E $6.70 $4.55
    LTC3721EUF-1#PBF 4x4 QFN-16 E $6.70 $4.55
    LTC3721EUF-1#TR 4x4 QFN-16 E $4.65
    LTC3721EUF-1#TRPBF 4x4 QFN-16 E $4.65
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