Linear Technology Corporation (Linear Technology Corporation) introduced a high-frequency control ON time of synchronous DC / DC controller LTC3833, the device having a differential output voltage detection and clock synchronization. By increasing the operating frequency during transient events, the controlled on-time, valley current mode architecture forces a very fast transient response, allowing the LTC3833 to step from a large load in only a few cycles. Recovery. Its 4.5V to 38V input voltage range covers a wide range of applications, including most intermediate bus voltage applications. Powerful built-in N-channel MOSFET gate drivers allow the use of high-power external MOSFETs to achieve high load currents of up to 25A in applications with output voltages from 0.6V to 5.5V, making them ideal for point-of-load applications .
The LTC3833 's differential amplifier provides true remote output voltage sampling for the positive and negative terminals, allowing for highly accurate regulation without the effects of traces, vias, and interconnect IR losses (up to ±500mV). Very short 20ns minimum on-time allows high step-down ratio power supplies to operate at high frequencies. The operating frequency can be selected from 200kHz to 2MHz or can be synchronized to an external clock. Monitor the output current by sensing the voltage drop across the output inductor (DCR) for maximum efficiency or by using a sense resistor to monitor the output current. Other features include a built-in bias LDO, soft start or tracking, adjustable current limit,
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