LTC3412EUF#PBF

LTC3412EUF#PBF is a high-efficiency monolithic synchronous step-down DC/DC converter utilizing a constant frequency, current mode architecture. It operates from an input voltage range of 2.625V to 5.5V and provides an adjustable regulated output voltage from 0.8V to 5V while delivering up to 2.5A of output current. The internal synchronous power switch with 85mohm on-resistance increases efficiency and eliminates the need for an external Schottky diode. Switching frequency is set by an external resistor or can be synchronized to an external clock. With 100% duty cycle, it provides low dropout operation, extending battery life in portable systems. OPTI-LOOP® compensation allows the transient response to be optimized over a wide range of loads and output capacitors. Applications include portable instruments, battery-powered equipment, notebook computers, distributed power systems, cellular telephones, and digital cameras.

• High efficiency up to 95%, ±2% output voltage accuracy
• 0.8V reference allows low output voltage, synchronizable switching frequency
• Low dropout operation: 100% duty cycle, power good output voltage monitor
• Overtemperature protection, 0.95MHz typical switching frequency at (ROSC = 309Kohm)
• Shutdown input DC bias current is 1µA maximum at (VRUN = 0V, VMODE = 0V)
• Power good pull-down resistance is 120 ohm typical at (TA = 25°C)
• RDS(ON) of P-channel FET is 85mohm typical at (ISW = 1A, TA = 25°C)
• Peak current limit is 5.4A typical at (TA = 25°C)
• Voltage feedback leakage current is 0.1µA typical at (TA = 25°C)
• Operating temperature range from -40°C to 85°C, 16-lead plastic QFN package

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party