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MIC5271 Datasheet(PDF) 1 Page - Microchip Technology |
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MIC5271 Datasheet(HTML) 1 Page - Microchip Technology |
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1 / 20 page  2017 - 2022 Microchip Technology Inc. and its subsidiaries DS20005881B-page 1 MIC5271 Features • Stable with Ceramic or Tantalum Capacitors • Standard Fixed Output Voltage Options: 3.0V and 5.0V • Adjustable Output Voltage Option: (–1.2V to –14V) • Positive and Negative Enable Thresholds • Low Dropout Voltage: –500 mV @ –100 mA • Low Ground Current: –25 µA @ Load = –100 µA • Tight Initial Accuracy: ±2% • Tight Load and Line Regulation • Thermal Shutdown and Current-Limit Protection • IttyBitty 5-Pin SOT23 Packaging • Zero-Current Off Mode Applications • GaAsFET Bias • Portable Cameras and Video Recorders • PDAs • Battery-Powered Equipment • Post-Regulation of DC/DC Converters General Description The MIC5271 is a µCap 100 mA negative regulator in a SOT23-5 package. With better than 2% initial accuracy, this regulator provides a very accurate supply voltage for applications that require a negative rail. The MIC5271 sinks 100 mA of output current at very low dropout voltage (500 mV typical, 700 mV maximum at 100 mA of output current). The µCap regulator design is optimized to work with low-value, low-cost ceramic capacitors. The output typically requires only a 1 µF capacitance for stability. Designed for applications where small packaging and efficiency are critical, the MIC5271 combines LDO design expertise with IttyBitty packaging to improve performance and reduce power dissipation. Ground current is optimized to help improve battery life in portable applications. The MIC5271 also includes a TTL-compatible enable pin, allowing the user to put the part into a zero-current off mode, in which the ground current is only ±1 µA, typical. The MIC5271 is available in the 5-pin SOT23 package for space saving applications and it is available with an adjustable output. Package Types Please see pin descriptions in Table 3-1. MIC5271YM5 5-Lead SOT23 (M5) Adjustable Output Voltage (Top View) MIC5271-5.0YM5 * 5-Lead SOT23 (M5) Fixed Output Voltage (Top View) * 5.0V pinout shown. 3.0V version is identical. ADJ GND –OUT –IN EN 3 1 5 2 4 L9AA NC GND –OUT –IN EN 3 1 5 2 4 L950 µCap Negative Low Dropout Regulator |
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