MAX1615EUK+T

MAX1615EUK+T is a high-voltage, low-power linear regulator for notebook computers. It supplies always-on, keep-alive power to CMOS RAM and microcontrollers (µCs) in systems with high-voltage batteries. Key features include a wide input voltage range, low dropout voltage, and low quiescent supply current. Despite a miserly 8µA (max) no-load supply current, the MAX1615 has an excellent line-transient response and AC power-supply rejection ratio. The space-saving package has excellent thermal characteristics and tolerates up to 571mW of power dissipation. Fault protection is provided by internal foldback current limiting and thermal shutdown circuitry. Applications include CMOS/RTC backup power, microcontroller power, notebook computers, smart-battery packs, PDAs and handy-terminals, battery-powered systems.

• Thermal-overload protection, low cost
• Input voltage range from 4 to 28V at VIN=15V, active-low SHDN=VIN, ILOAD=5µA, TA=TMIN to TMAX
• Shutdown supply current is 1.5µA max at TA=+25°C, active-low SHDN=GND (shutdown mode)
• Dropout supply current is 70µA typ at TA=+25°C, output set to 5V, VIN=4V
• Output voltage is 3.33V typ at 5/√3=GND, ILOAD=1mA, TA=+25°C, VIN=6V to 28V
• Dropout voltage is 350mV max at ILOAD=30mA
• Thermal-shutdown temperature is 150°C typ at Vactive-low SHDN=0V or 15V, hysteresis=+20°C
• 5 SOT23-5 package
• Temperature range from -40°C to +85°C

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