LT1306ES8#PBF

LT1306ES8#PBF is a fully integrated, fixed-frequency synchronous boost converter capable of generating 5V at 1A from a Li-Ion cell. This device contains both the main power switch and synchronous rectifier on chip and automatically disconnects the output from the input in shutdown, eliminating the need for external load disconnect circuitry. Additionally, the output remains regulated when VIN exceeds VOUT, allowing difficult step-up/stepdown converter functions to be easily realized using a single inductor. The internal 300KHz oscillator of the LT1306 can be easily synchronized to an external clock from 425KHz to 500KHz. This allows switching harmonics to be tightly controlled and eliminates any beat frequencies that may result from a multifrequency system. The LT1306 automatically shifts into power-saving Burst Mode™ operation at light loads. Applications include satellite phones, portable instruments, personal digital assistants, palmtop computers.

• Output disconnected from input during shutdown, controlled input current during start-up
• Operates with VIN as low as 1.8V, automatic burst mode operation at light loads
• Output voltage remains regulated when VIN > VOUT, can be externally synchronized
• Switching frequency is 310KHz typical at (1.8V ≤ VIN ≤ 7V, 0°C ≤ TA ≤ 85°C)
• Switch current limit is 2.3A minimum at (duty cycle = 0.1, TA = 25°C)
• Switch VCESAT is 0.45V typical at (ISW = 2A, TA = 25°C)
• Operating supply current is 4.5mA typical at (TA = 25°C)
• Shutdown supply current is 9µA typical at (VS/S = 0V, TA = 25°C)
• Maximum duty cycle is 90% typical at (VFB = 1V, 0°C ≤ TA ≤ 85°C, TA = 25°C)
• Operating temperature range from -40°C to 85°C, 8-lead plastic SO 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