The TPS54340QDDAQ1 is a 42V 3.5A Step-down Converter with an integrated high-side MOSFET and Eco-mode?. The device survives load-dump pulses up to 45V per ISO 7637. Current mode control provides simple external compensation and flexible component selection. A low-ripple, pulse skip mode reduces the no load, regulated output supply current to 146μA. Using the enable pin, shutdown supply current is reduced to 1μA, when the enable pin is low. Under-voltage lockout is internally set at 4.3V but can be increased using an external resistor divider at the enable pin. The output voltage start-up ramp is internally controlled to provide a controlled start-up and eliminate overshoot. A wide adjustable frequency range allows for optimization of either efficiency or external component size. Frequency foldback and thermal shutdown protects internal and external components during an overload condition.
- High efficiency at light loads with a pulse-skipping Eco-mode?
- 92mR High-side MOSFET
- 146μA Operating quiescent current and 2μA shutdown current
- 100kHz to 2.5MHz Adjustable switching frequency
- Synchronizes to external clock
- Low dropout at light loads with integrated BOOT recharge FET
- Adjustable UVLO voltage and hysteresis
- 0.8V 1% Internal voltage reference
- Green product and no Sb/Br
车用, 消费电子产品, 电源管理, 工业, 自动化与过程控制, 电机驱动与控制, 通信与网络
(EN)
