LTC3532EMS#PBF

LTC3532 is a high efficiency, fixed frequency, buckboost DC/DC converter that operates from input voltages above, below or 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 single lithium-ion, multicell alkaline or NiMH applications where the output voltage is within the battery voltage range. This device includes two 0.36ohm N-channel MOSFET switches and two 0.42ohm P-channel switches. Switching frequencies upto 2MHz are programmed with an external resistor. Quiescent current is only 35μA in Burst mode operation, maximizing battery life in portable applications. 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 miniature hard disk drive power supply, MP3 players, handheld instruments, digital cameras, handheld terminals etc.

• Wide input voltage range is 2.4V to 5.5V
• Output voltage range is 2.4V to 5.25V
• Upto 500mA peak output current
• Manual or programmable automatic Burst Mode® operation
• Output disconnect in shutdown
• Pin compatible with LTC3440
• Feedback voltage is 1.22V typical
• Maximum duty cycle is 88% typical
• Operating temperature is -40°C to 85°C
• Package style is 10-lead plastic MSOP

บันทึก

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