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  • LT1175 500mA Negative Low Dropout Micropower Regulator
    The LT ®1175 is a negative micropower low dropout regulator (LDO). It features 45µA quiescent current, dropping to 10µA in shutdown. A new reference amplifier topology gives precision DC characteristics along with the ability to maintain good loop stability with an extremely wide range of output capacitors. Very low dropout voltage and high efficiency are obtained with a unique power transistor antisaturation design. Adjustable and fixed 5V versions are available.
    http://www.linear.com/pc/downloadDocument.do?navId=H0,C1,C1003,C1040,C1019,P1135,D3273
  • Low Dropout, Negative Output Voltage Regulator
    The TC59 is a low dropout, negative output voltage regulator designed specifically for battery-operated systems. Its full CMOS construction eliminates the wasted ground current typical of bipolar LDOs. This reduced supply current significantly extends battery life, particularly when the TC59 is operated in dropout.
    http://ww1.microchip.com/downloads/en/DeviceDoc/21438b.pdf
  • LM320L/LM79LXXAC Series 3-Terminal Negative Regulators
    The LM320L/LM79LXXAC dual marked series of 3-terminal negative voltage regulators features fixed output voltages of −5V, −12V, and −15V with output current capabilities in excess of 100mA. These devices were designed using the latest computer techniques for optimizing the packaged IC thermal/electrical performance. The LM79LXXAC series, even when combined with a minimum output compensation capacitor of 0.1µF, exhibits an excellent transient response, a maximum line regulation of 0.07% VO/V, and a maximum load regulation of 0.01% VO/mA.
    http://www.national.com/ds.cgi/LM/LM320L.pdf
  • Low-dropout 0.5A negative linear regulator
    The UCC384-x family of negative linear-series pass regulators is tailored for low-dropout applications where low-quiescent power is important. Fabricated with a BCDMOS technology ideally suited for low input-to-output differential applications, the UCC384-x passes 0.5A while requiring only 0.2V of input-voltage headroom. Dropout voltage decreases linearly with output current, so that dropout at 50mA is less than 20mV.
    http://focus.ti.com/lit/ds/symlink/ucc384-5.pdf
  • Pass Transistor Boosts Current from Negative Linear Regulator
    Abstract: The addition of a pass transistor to the circuit of Figure 1 allows the linear regulator (LDO) to deliver more current to the load. A detailed power dissipation analysis is included to assist circuit developers in choosing the proper power rating of each component. Furthermore, lab data shows that the device is stable across temperature, line, and load.
    http://pdfserv.maxim-ic.com/en/an/AN1861.pdf

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