Features: `Low Dropout Voltage 0.8V maximum at 100mA 0.95V maximum at 800mA 20% lower dropout voltage than 1117 LDO regulators`Guaranteed Low Dropout Voltage at Multiple Current Levels`1% Trimmed 2.5V, 3.0V and 3.3V Outputs`Reduced Quiescent Current: 75µA Maximum`Short Circuit and Therm...
IMP37: Features: `Low Dropout Voltage 0.8V maximum at 100mA 0.95V maximum at 800mA 20% lower dropout voltage than 1117 LDO regulators`Guaranteed Low Dropout Voltage at Multiple Current Levels`1% Trimm...
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DescriptionThe IMP38HC42ESA is one member of the IMP38 family which is designed as the fixed frequ...
·High-efficiency linear power supplies
·Post regulator for switching supplies
·5V to 3.3V linear regulators
·USB hubs
·Battery chargers
·Routers, ISDN/DSL modems
The IMP37 series of Low Dropout (LDO) three-terminal voltage regulators feature guaranteed low dropout voltages at currents up to 0.8A. The IMP37 regulator family dropout voltage is guaranteed to be 0.95V or lower at 0.8A. At 100mA, the maximum dropout voltage is 0.8V. Compared with "1117" type LDOs, the IMP37 has a 20% lower dropout voltage.
Three fixed output voltages of IMP37 are offered: 2.5V, 3.0V and 3.3V. Output voltages are factory trimmed to within 1% of the nominal value.
In addition to low dropout voltages, the IMP37 family features greatly reduced quiescent operating current. The 75mA maximum specification represents an over 100 times improvement over competitive devices.
Devices of IMP37 are short circuit protected, and a thermal protection circuit shuts the regulator off should the junction temperature exceed 165°C.
The IMP37 is available in low-profile plastic SOT-223 and TO-263 packages and are pin compatible with fixed "1117" devices.