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MAX1832EUT-T Datasheet(PDF) 6 Page - Maxim Integrated Products |
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MAX1832EUT-T Datasheet(HTML) 6 Page - Maxim Integrated Products |
6 / 12 page High-Efficiency Step-Up Converters with Reverse Battery Protection 6 _______________________________________________________________________________________ 10 µH GND RST +1.5V TO +3.3V OUT OUTPUT +3.3V POWER-ON RESET BATT BATTERY SHDN LX MAX1833 MAX1835 100k Ω 10 µF R4 220k Ω R3 1M Ω C1 10nF 10 µF 10 µH GND FB +1.5V TO +5.0V OUT OUTPUT +5.0V BATT BATTERY SHDN LX MAX1832 MAX1834 R2 309k Ω R1 100k Ω R3 1M Ω R4 220k Ω C1 10nF 10 µF Pin Description PIN MAX1832 MAX1834 MAX1833 MAX1835 NAME FUNCTION 11 SHDN Shutdown. A high logic level turns on the device. When SHDN is low the part is off, and the current into BATT is typically 0.1µA. For the MAX1832/MAX1833, the battery is connected to OUT through an internal PFET and the external inductor when SHDN is low. SHDN can be used for low-battery cutoff (1.228V threshold). See Low-Battery Cutoff. SHDN has reverse battery protection. 2 2 BATT Battery Voltage Connection. BATT has reverse battery protection. 3 3 GND Ground 44 LX Inductor Connection. N-channel MOSFET switch drain and synchronous rectifier P-channel switch drain. LX has reverse battery protection. 5 5 OUT Output Voltage. Bootstrapped supply for the device. Output sense point for MAX1833/MAX1835. 6 — FB MAX1832/MAX1834 Feedback Input. Set the output voltage through a resistor-divider network. See Setting the Output Voltage. — 6 RST MAX1833/MAX1835 Power-On Reset Open-Drain Output. RST pulls low when the output is 10% below the regulation point. If not used, connect to GND. Figure 1a. MAX1833/MAX1835 Typical Operating Circuit Figure 1b. MAX1832/MAX1834 Typical Operating Circuit |
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