DC-DC преобразователи интегральные NCP1402SN50T1G

Импульсный повышающий стабилизатор , фиксированный, 800мВ-5.5В вход, 5В и 200мА выход, 200кГц

The NCP1402SN50T1G is a monolithic micropower step-up DC-to-DC Converter, specially designed for powering portable equipment from one or two cell battery packs. This device is designed to start-up with a cell voltage of 0.8V and operate down to less than 0.3V. With only three external components, this series allow a simple means to implement highly efficient converters that are capable of up to 200mA of output current at Vin = 2.0V, VOUT = 3.0V. Each device consists of an on-chip PFM (pulse frequency modulation) oscillator, PFM controller, PFM comparator, soft-start, voltage reference, feedback resistors, driver and power MOSFET switch with current limit protection. Additionally, a chip enable feature is provided to power down the converter for extended battery life.

• Extremely Low Start-up Voltage of 0.8V
• Operation Down to Less than 0.3V
• High Efficiency 85% (Vin = 2.0V, VOUT = 3.0V, 70mA)
• Low Operating Current of 30µA (VOUT = 1.9V)
• ±2.5% Output Voltage Accuracy
• Low Converter Ripple with Typical 30mV
• Only Three External Components are Required
• Chip Enable Power Down Capability for Extended Battery Life

Области применения

Потребительская Электроника, Переносные Устройства, Визуализация, Видео и Зрение, Аудио Stresses exceeding those listed in the Maximum Ratings table may damage the device, if any of these limits are exceeded.