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MAX1793EUE-25 Datasheet(PDF) 6 Page - Maxim Integrated Products |
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MAX1793EUE-25 Datasheet(HTML) 6 Page - Maxim Integrated Products |
6 / 11 page Low-Dropout, Low IQ, 1A Linear Regulator 6 _______________________________________________________________________________________ SHUTDOWN RESPONSE MAX1793 toc14 40 µs/div VOUT 2V/div 5V/div VSHDN IOUT = 100mA RESET OUTPUT RESPONSE MAX1793 toc15 1ms/div VIN 5V/div 2V/div 2V/div VOUT RST Typical Operating Characteristics (continued) (Circuit of Figure 2, VIN = +5V, V SHDN = VIN,VOUT = +3.3V, TA = +25°C, unless otherwise noted.) Pin Description PIN NAME FUNCTION 1, 8. 9, 16 N.C. No Connection. Not internally connected. 2–5 IN Regulator Input. Supply voltage ranges from +2.5V to +5.5V. Bypass with a 4.7µF capacitor to GND (see the Capacitor Selection and Regulator Stability). These inputs are internally connected, but they also must be externally connected for proper operation. 6 RST Reset Output. Open-drain output is low when VOUT is 6% below its nominal value. RST remains low while the output voltage (VOUT) is below the reset threshold and for at least 4ms after VOUT rises above the reset threshold. Connect a 100k Ω pullup resister to OUT to obtain an output voltage. 7 SHDN Active-Low Shutdown Input. A logic-low disables the output and reduces the supply current to 0.1µA. In shutdown, the RST output is low and OUT is pulled low through an internal 5k Ω resistance. Connect SHDN to IN for normal operation. 10 GND Ground. This pin and the exposed pad also function as a heatsink. Solder both to a large pad or to the circuit-board ground plane to maximize power dissipation. 11 SET Voltage-Setting Input. Connect to GND to select the factory-present output voltage. Connect SET to an external resistor-divider for adjustable-output operation. 12–15 OUT Regulator Output. Bypass with a 6.8µF, low-ESR capacitor to GND. Connect all OUT pins together at the IC. |
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