The MAX1830EEE+ is a low voltage, step-down regulator with synchronous rectification and internal switch in 16 pin QSOP package. This constant off time, PWM step-down DC to DC converter is ideal for use in 5V and 3.3V to low voltage conversion. This device has internal synchronous rectification for high efficiency and reduced component count. The MAX1830 produces preset +2.5V, +1.8V or +1.5V output voltage or an adjustable output from +1.1V to VIN. It uses unique current mode, constant off-time PWM control scheme which includes Idle Mode to maintain high efficiency during light load operation. The programmable constant off time architecture sets switching frequencies up to 1MHz allowing the user to optimize performance trade-offs between efficiency, output switching noise, component size and cost. An internal digital soft start to limit surge currents during start-up and low power shutdown mode that disconnects input from output and reduces supply current below 1μA.
- 3V to 5.5V input voltage range and 750μA maximum operating supply current
- Operating temperature range from -40°C to 85°C
- ±1.5% of output accuracy and 94% efficiency
- Internal PMOS/NMOS switches (45mohm/55mohm RON at VIN = 4.5V and 50mohm/55mohm RON at VIN = 3V)
- Less than 1μA shutdown supply current and no load supply current of 325μA
- AC load regulation error of 2% and DC load regulation error of 0.4%
- Continuous output currents up to 3A
- Thermal shutdown, output short circuit protection and inrush current limiting
- 100% duty cycle during low dropout operation
- Requires no external schottky diode
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(EN)
