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MAX1793
低压差、低IQ、1A线性稳压器

压差仅为210mV的1A LDO,封装耗散功率达1.7W,尺寸比SOT23封装缩小30%


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概述
完整的数据资料 (PDF, 464kB)
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The MAX1793 low-dropout linear regulator (LDO) operates from +2.5V to +5.5V and delivers a guaranteed 1A load current with a low 210mV dropout. The high-accuracy (±1%) output voltage is preset at an internally trimmed voltage (see Ordering Information) or can be adjusted from 1.25V to 5.0V with an external resistor-divider.

An internal PMOS pass transistor allows a low 125µA supply current, making the MAX1793 ideal for battery-operated portable equipment. Other features include a built-in reset output, low-power shutdown, and short-circuit and thermal overload protection. The MAX1793 is available in a 1.5W, 16-pin power TSSOP package, which is 30% smaller than a SOT223 package and only 1.1mm high.

关键特性   应用/使用
  • Guaranteed 1A Output Current
  • Low 210mV Dropout at 1A
  • Up to ±1% Output Voltage Accuracy
    • Preset at 1.5V, 1.8V, 2.0V, 2.5V, 3.3V or 5.0V
    • Adjustable from 1.25V to 5.0V
  • Reset Output (4ms delay)
  • Low 125µA Ground Current
  • 0.1µA Shutdown
  • Low 115µVRMS Output Noise
  • Thermal Overload Protection
  • Output Current Limit
  • Tiny TSSOP Power Package (1.5W)
  • 30% Smaller than SOT223 (only 1.1mm high)

 
  • 坞站
  • 笔记本电脑
  • PDA
  • USB集线器
  • 无线基站

    Key Specifications:   Linear Regulators
    Part Number Regulators per Pkg. Min. VIN (V) Max. VIN (V) Preset VOUT (V) Min. Adjustable VOUT (V) Max. Adjustable VOUT (V) Typ. VDROPOUT@ Rated ILOAD (V) Rated ILOAD (mA) Max. ICC (µA) Low Battery/ Power Fail Output Nominal POK/Reset Threshold (V) Watchdog Reverse Battery Protection Package Smallest Available Package (max w/pins) (mm2) Operating Temp. Range (°C) Price**
    MAX1793  1 2.5 5.5 2.5
    3.3
    1.25 5 0.21 1,000 200 No Vout-6% No No TSSOP-EP/16 33 -40 to +85 $1.50 @ 1k
    See All Linear Regulators (145)
    Notes:
    **This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

    图表
    MAX1793:典型工作电路
    典型工作电路

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    参考文献: 19-1654; Rev. 1; 2000-12-18
    本页最后一次更新: 2008-12-12


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