peculiarity
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Ideal for converting from 1.8V or 1.5V inputs
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Designed for the use of low ESR ceramic capacitors
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0.8V, 1.2V and 1.5V standard voltages
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Ultra-low dropout voltage (75mV@0.8A typical)
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1.5% initial output accuracy
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Load Regulation 0.1%/(typical)
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30nA (typical) quiescent current during shutdown
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Current at the low ground pin under all load conditions
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Overtemperature/overcurrent protection
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Available in 5-lead TO220 and TO263 packages
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-40°C to +125°C junction temperature range
illustrate
The LP38841 is a high current, fast response regulator that keeps the output voltage regulated with a minimum input and output voltage drop.
Manufactured on a CMOS process, the device consists of two input voltages: VBIAS provides the voltage to drive the gate of the N-MOS power transistor, and Vin is the input voltage to power the load.
The use of an externally biased railway allows some to operate ultra-low Vin voltages.
Unlike bipolar regulators, CMOS architectures draw very low quiescent current at any output load current.
The result of using an N-MOS power transistor with a wide bandwidth but minimal external capacitance is the need to maintain loop stability.
The fast transient response of these devices makes them suitable for DSP, microcontroller core voltage, and switch-mode power supply postregulators.
The device is available in TO-220 and TO-263 packages.
Differential pressure:
75 mV (typical) @ 0.8A load current.
Quiescent current:
30 mA (typical) at full load.
Shutdown current:
When the S/D# pin of 30 NA (typical) is low.
Precision output voltage:
1.5% room temperature accuracy.
apply
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Power supply for ASICs: - Desktop computers, laptops and graphics cards, servers - Game set-top boxes, printers and copiers
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Server core and I/O power
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Power supplies for DSPs and FPGAs
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Postal regulators for SMPS