深圳市潤嘉泰電子是一家經銷著名品牌的電子元器件專業供應商。由2010年成立，本著“客戶第一，誠信至上”的原則.

    本公司主要銷售：二三極管，電源ic，模擬開關，運算放大器，LED驅動，視頻驅動，穩壓器，單片機解密，ARM芯片解密，閃存系列,傳感器、繼電器、開關、電位器、保險器件、電子零器件、IC集成電路、等。

1至3節電池、大電流、低噪聲、升壓型DC-DC轉換器，帶有線性穩壓器

低噪聲、雙輸出轉換器，為蜂窩電話中的PA、無線基帶和邏輯電路供電

概述

The MAX1705/MAX1706 are high-efficiency, low-noise, step-up DC-DC converters with an auxiliary linear-regulator output. These devices are intended for use in battery-powered wireless applications. They use a synchronous rectifier pulse-width-modulation (PWM) boost topology to generate 2.5V to 5.5V outputs from battery inputs, such as 1 to 3 NiCd/NiMH cells or 1 Li-Ion cell. The MAX1705 has an internal 1A n-channel MOSFET switch. The MAX1706 has a 0.5A switch. Both devices also have a built-in low-dropout linear regulator that delivers up to 200mA.

With an internal synchronous rectifier, the MAX1705/MAX1706 deliver 5% better efficiency than similar non-synchronous converters. They also feature a pulse-frequency-modulation (PFM) standby mode to improve efficiency at light loads, and a 1μA shutdown mode. An efficiency-enhancing track mode reduces the step-up DC-DC converter output to 300mV above the linear-regulator output.

Both devices come in a 16-pin QSOP package, which occupies the same space as an 8-pin SO. Other features include two shutdown-control inputs for push-on/push-off control, and an uncommitted comparator for use as a voltage monitor.

關鍵特性

• Up to 96% Efficiency
• 1.1V_IN Guaranteed Startup
• Up to 850mA Output (MAX1705)
• Step-Up Output (2.5V to 5.5V Adjustable)
• Linear Regulator (1.25V to 5.0V Adjustable)
• PWM/PFM Synchronous-Rectified Topology
• 300kHz PWM Mode or Synchronizable
• 1μA Shutdown Mode
• Voltage Monitor
• Pushbutton On/Off Control

  應用/使用

  • 數字無繩電話
    
  • 手持式儀表(PDA、掌上電腦)
    
  • 掌上電腦
    
  • PCS電話
    
  • 個人通信裝置
    
  • 雙向尋呼
    
  • 無線手機
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