LTC3707EGN#PBF

LTC3707 is a high performance dual step-down switching regulator controller that drives N-channel synchronous power MOSFET stages. A constant frequency current mode architecture allows adjustment of the frequency upto 300KHz. Power loss and noise due to the ESR of the input capacitors are minimized by operating the two controller output stages out of phase. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The precision 0.8V reference and power good output indicator are compatible with future microprocessor generations, and a wide 3.5V to 30V input supply range encompasses all battery chemistries. A RUN/SS pin for each controller provides both soft-start and optional timed, short-circuit shutdown. It is used in application such as notebook and palmtop computers, PDAs, battery chargers, portable instruments, battery-operated digital devices, DC power distribution systems etc.

• 180° phased dual controllers reduce required input capacitance and power supply induced noise
• ±1.5% output voltage accuracy over temperature
• Dual N-channel MOSFET synchronous drive
• Foldback output current limiting, latched short-circuit shutdown with defeat option
• Output overvoltage protection, remote output voltage sense
• 5V and 3.3V standby regulators
• Selectable constant frequency, Burst Mode® operation or PWM operation
• Shutdown current is 20µA typical at (VRUN.SS1, 2 = 0V, VSTBYMD = open, TA = 25°C. VIN = 15V)
• Operating temperature is -40°C to 85°C
• Package style is 28-lead plastic SSOP

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