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MP2000DJ-ADJ Datasheet(PDF) 5 Page - Monolithic Power Systems |
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MP2000DJ-ADJ Datasheet(HTML) 5 Page - Monolithic Power Systems |
5 / 6 page MP2000 – LOW INPUT VOLTAGE, 150mA LINEAR REGULATOR MP2000 Rev. 0.92 www.MonolithicPower.com 5 3/2/2006 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2006 MPS. All Rights Reserved. TM OPERATION The MP2000 is a low-current, low-voltage, low-dropout linear regulator. It is intended for use in devices that require very low voltage and low quiescent current power such as wireless modems, pagers and cellular phones. The MP2000 uses a PNP pass element and features internal thermal shutdown and an internal current limit circuit. MP2000_F01_BD02 VIN VEN COUT CBYP R1 R2 VOUT -- + BANDGAP REFERENCE VFB EXTERNAL RESISTOR DIVIDER 1 3 2 4 5 Figure 1—Adjustable Regulator APPLICATION INFORMATION Setting the Output Voltage The output voltage can be adjusted by changing the values of the external resistor divider. Use the following equation to determine these values: ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ + × = 2 R 1 R 1 V 5 . 0 VOUT Typically R1 + R2 are recommended to be less than 100kΩ. In Figure 2, C2 is added for improved transient response. TYPICAL APPLICATION CIRCUIT - ADJUSTABLE MP2000_F02_TAC01 MP2000-ADJ FB OUT 4 5 GND 2 EN IN 3 1 OUTPUT 1.2V VIN 1.35V to 6.0V VIN C2 100nF Figure 2—Typical Application Circuit with VOUT = 1.2V |
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