Микросхема TPS62203DBVT, DC-DC преобразователь 3.3В 300мА STP-DN [SOT-23-5]

Характеристики

TPS62203DBVT, DC-DC преобразователь 3.3В 300мА STP-DN [SOT-23-5]The TPS62203DBVT is a 300mA 95% Efficient Synchronous Step-down Converter ideally suited for portable systems powered by 1-cell Li-ion or 3-cell NiMH/NiCd batteries. The device is also suitable to operate from a standard 3.3 or 5V voltage rail. With an output voltage range of 6V down to 0.7V and up to 300mA output current, the device is ideal to power low voltage DSPs and processors used in PDAs, pocket PCs and smart phones. Under nominal load current, the devices operate with a fixed switching frequency of typically 1MHz. At light load currents, the part enters the power save mode operation, the switching frequency is reduced and the quiescent current is typically only 15µA, therefore, it achieves the highest efficiency over the entire load current range. The TPS62203 needs only three small external components. An advanced fast response voltage mode control scheme achieves superior line and load regulation with small ceramic input and output capacitors.

• High-efficiency synchronous step-down converter with up to 95% efficiency
• Adjustable output voltage range from 0.7V to VI
• Fixed output voltage options available
• 1MHz Fixed frequency PWM operation
• Highest efficiency over wide load current range due to power save mode
• 15µA Typical quiescent current
• Soft-start
• 100% Duty cycle low-dropout operation
• Dynamic output-voltage positioning
• Green product and no Sb/Br