LT1676CS8#PBF

LT1676 is a wide input range, high efficiency Buck (step-down) switching regulator. The monolithic die includes all oscillator, control and protection circuitry. The part can accept input voltages as high as 60V and contains an output switch rated at 700mA peak current. Current mode control offers excellent dynamic input supply rejection and short-circuit protection. It contains several features to enhance efficiency. The internal control circuitry is normally powered via the VCC pin, thereby minimizing power drawn directly from the VIN supply. The action of the device switch circuitry is also load dependent. At medium to high loads, the output switch circuitry maintains high rise time for good efficiency. At light loads, rise time is deliberately reduced to avoid pulse skipping behaviour. It is widely used in application such as automotive DC/DC converters, telecom 48V step-down converters, cellular phone battery charger accessories, IEEE 1394 step-down converters etc.

• Wide input range is 7.4V to 60V
• Adaptive switch drive maintains efficiency at high load without pulse skipping at light load
• True current mode control
• Switching frequency is 100KHz typical
• Synchronization range is 130KHz to 250KHz
• Low supply current in shutdown is 30µA typical
• Operating temperature is 0°C to 125°C
• Package style is 8-lead plastic SO

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