LTC3442EDE#PBF

LTC3442 is a highly efficient, fixed frequency, buck boost DC/DC converter, which operates from input voltages above, below, and equal to the output voltage. The topology incorporated in the IC provides a continuous transfer function through all operating modes, making the product ideal for a single lithium-ion or multicell alkaline applications where the output voltage is within the battery voltage range. The device includes two 0.10 ohm N-channel MOSFET switches and two 0.10 ohm P-channel switches. Operating frequency and average input current limit can each be programmed with an external resistor. Automatic Burst Mode operation allows the user to program the load current for Burst Mode operation, or to control it manually. It is used in application such as PDA/‘SMART’ phones, handheld computers, MP3 players, handheld instruments, digital cameras, wireless handsets, USB peripherals etc.

• Regulated output with input voltages above, below, or equal to the output
• Single inductor, no schottky diodes required
• Manual or programmable automatic Burst Mode® operation
• Programmable average input current limit, high efficiency upto 95%
• Upto 1.2A continuous output current from a single lithium-ion cell
• Output disconnect in shutdown, shutdown current is 1µA maximum
• Input voltage range is 2.4V to 5.5V, output voltage range is 2.4V to 5.25V
• Quiescent current in Burst Mode operation is 35µA typical
• Operating temperature is -40°C to 85°C
• Package style is 12-lead plastic DFN

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