LT1767EMS8-3.3#PBF

LT1767 is a 1.25MHz monolithic buck switching regulator. A high efficiency 1.5A, 0.22ohmswitch is included on the die together with all the control circuitry required to complete a high frequency, current mode switching regulator. Current mode control provides fast transient response and excellent loop stability. New design techniques achieve high efficiency at high switching frequencies over a wide operating range. A low dropout internal regulator maintains consistent performance over a wide range of inputs from 24V systems to Li-Ion batteries. An operating supply current of 1mA improves efficiency, especially at lower output currents. Shutdown reduces quiescent current to 6µA. Maximum switch current remains constant at all duty cycles. Synchronization allows an external logic level signal to increase the internal oscillator from 1.5MHz to 2MHz.

• Wide operating voltage range: 3V to 25V
• 1.2V feedback reference voltage
• Fixed voltage is 3.3V
• 2% overall output tolerance
• Uses low profile surface mount components
• Current mode loop control
• Full cycle-by-cycle current limit and thermal shutdown
• 8-lead plastic MSOP package
• Operating temperature range from -40°C to 125°C

Notes

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