Synchronous Step-Down Converter
Design
Tools
®
RT2875D
3A, 36V, Synchronous Step-Down Converter
General Description
The RT2875D is a high efficiency, ...
Description
Design
Tools
®
RT2875D
3A, 36V, Synchronous Step-Down Converter
General Description
The RT2875D is a high efficiency, current-mode synchronous DC-DC step-down converter that can deliver up to 3A output current over a wide input voltage range from 4.5V to 36V. The device integrates 95mΩ high-side and 70mΩ low-side MOSFETs to achieve high conversion efficiency. The current-mode control architecture supports fast transient response and simple external compensation. A cycle-by-cycle current limit function provides protection against shorted output and an external soft-start eliminates input current surge during start-up. The RT2875D provides complete protection functions such as input under-voltage lockout, output under-voltage protection, over-current protection and thermal shutdown.
The RT2875D is available in the thermal enhanced TSSOP14 (Exposed Pad) package.
Features
3A Output Current Internal N-MOSFETs Current Mode Control Adjustable Switching Frequency : 300kHz to 2.1MHz Adjustable Current Limit : 1.5A to 6A Synchronous to External Clock : 300kHz to 2.1MHz Adjustable Output Voltage from 0.6V to 24V High Efficiency Up to 95% Stable with Low ESR Ceramic Output Capacitors Cycle-by-Cycle Current Limit Input Under-Voltage Lockout Output Under-Voltage Protection 0.6V ± 1% Reference Voltage Over Temperature Thermal Shutdown AEC-Q100 Grade 2 Qualified RoHS Compliant and Halogen Free
Pin Configuration
(TOP VIEW)
SW SW
PGND RT/SYNC
AGND RLIM FB
...
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