LT1573

• Product introduction

LT1573Low dropout regulator driver

peculiarity

• Low Cost Solution for High Current, Low Dropout Regulators Low-cost solution for high current, low dropout regulators
• Fast Transient Response Needs Much Less Bulk CapacitanceFast transient response requires much less bulk capacitance
• Latching Overload Protection Minimizes Heat Sink SizeLock overload protection minimizes heatsink size
• Precision Output Voltage (1%)Precision output voltage (1%)
• Single Supply Operation: V_IN= 2.8V to 10VSingle-supply operation_：VIN= 2.8V to 10V
• Small Surface Mount PackageSmall surface mount package
• Capable of Very Low Dropout Voltage (Very low dropout voltage capability (
• Fixed or Adjustable OutputsFixed or adjustable output
• ShutdownShut down
• descriptionThe LT®1573 is a regulator driver IC designed to provide a low cost solution for applications requiring high current, low dropout and fast transient response.®The LT 1573 is a regulator driver IC designed to provide a low cost solution for applications requiring high current, low dropout voltage and fast transient response. When combined with an external PNP power transistor, this device provides load current up to 5A with dropout voltages as low as 0.35V.When combined with an external PNP power transistor, the device delivers load currents up to 5A with a voltage drop voltage of up to 0.35V low. The LT1573 circuitry is designed for extremely fast transient response.The LT1573 circuit is designed for extremely fast transient response. This greatly reduces bulk storage capacitance when the regulator is used in applications with fast, high current load transients.This greatly reduces the large amount of memory capacity used in regulators that have fast, high current load transients in applications. To keep cost and complexity low, the LT1573 uses a new time-delayed latching overcurrent protection technique that requires no external current sense resistor.To keep cost and complexity low, the LT1573 uses a new time-delay latch-out overcurrent protection technique that does not require an external current sense resistor. Base drive is limited for instantaneous protection, and a time-delayed latch protects the regulator from continuous short circuits.The corresponding driver instantaneous protection is limited, and the time delay latches up the continuous short-circuit protection regulator. The LT1573 is available as an adjustable regulator with an output range of 1.27V to 6.8V and with fixed output voltages of 2.5V, 2.8V and 3.3V.The LT1573 is available as a regulated 6.8V, 2.5V, 2.8V and 3.3V fixed output voltage with adjustable output ranges of 1.27V. Output accuracy is better than 1% to meet the critical regulation requirement of fast microprocessors.Output accuracy is better than 1% to meet the critical regulatory requirements of fast microprocessors. A special 8-pin, fused-lead surface mount package is used to minimize regulator footprint and provide adequate heat sinking.Uses a special 8-pin, molten lead surface mount package to minimize the conditioning footprint and provide adequate heat dissipation.
   
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