Регуляторы напряжения - Импульсные регуляторы TPS61240DRVT .

Синхронный повышающий импульсный стабилизатор , фиксированный, 2.3В-5.5В вход, 5В/0.45А, 3.5МГц

The TPS61240DRVT is a step-up DC-to-DC Converter optimized for products powered by either a three-cell alkaline, NiCd or NiMH or one-cell Li-ion or Li-polymer battery. With an input voltage range of 2.3 to 5.5V, the device supports batteries with extended voltage range and is ideal to power portable applications. The TPS6124x boost converter is based on a quasi-constant on-time valley current mode control scheme. It presents a high impedance at the VOUT pin when shut down. This allows for use in applications that require the regulated output bus to be driven by another supply while the TPS6124x is shut down. During light loads the device will automatically pulse skip allowing maximum efficiency at lowest quiescent currents. In the shutdown mode, the current consumption is reduced to less than 1µA.

• Efficiency >90% at nominal operating conditions
• Best in class line and load transient
• Automatic PFM/PWM mode transition
• Low ripple power save mode for improved
• Efficiency at light loads
• Load disconnect during shutdown
• Current overload and thermal shutdown protection
• 3 Surface-mount external components required (one MLCC inductor, two ceramic capacitors)
• Green product and no Sb/Br

Области применения

Потребительская Электроника, Переносные Устройства, Компьютеры и Периферия, Визуализация, Видео и Зрение, Аудио, Управление Питанием