ANALOG DEVICES LTC3565EMSE#PBF DC-DC Switching Synchronous Buck Regulator, Adjustable, 2.5 to 5.5Vin, 0.6-5.5V/1.25A Out, MSOP-10

LTC3565EMSE#PBF is a constant-frequency, synchronous step-down DC/DC converter designed for medium-power applications. It operates within a 2.5V to 5.5V input voltage range and offers a user-configurable operating frequency of up to 4MHz, enabling the use of tiny, low-cost capacitors and inductors of 1mm or less in height. The output voltage is adjustable from 0.6V to 5.5V. Internal synchronous power switches ensure high efficiency. The LTC3565 employs current-mode architecture and external compensation, allowing the transient response to be optimized across a wide range of loads and output capacitors. Additionally, it can be configured for automatic power-saving Burst Mode operation (with an IQ of 40µA), reducing gate charge losses when the load current drops below the level required for continuous operation. Applications include notebook computers, digital cameras, cellular phones, handheld instruments, and board-mounted power supplies.

• High efficiency up to 95%, VIN range from 2.5V to 5.5V
• Stable with ceramic capacitors, uses tiny capacitors and inductor
• Current mode operation for excellent line and load transient response
• Short-circuit protected, low dropout operation: 100% duty cycle
• Synchronizable to external clock, supports pre-biased outputs, output voltage from 0.6V to 5V
• Oscillator frequency is 1.5MHz typical at (RT = 125k, TJ = 25°C)
• Shutdown input DC supply current is 0.1µA typical at (VRUN = 0V, TJ = 25°C)
• Peak switch current limit is 2.1A typical at (VIN = 3V, VFB = 0.5V, TJ = 25°C)
• Top switch on-resistance is 0.15 ohm typical at (TJ = 25°C)
• Operating junction temperature range from -40°C to 125°C, 10-lead plastic MSOP 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