6A, 18V, Synchronous Step-Down Converter
Input Voltage (min.): 4.50 V
Input Voltage (max.): 18.00 V
Switching Frequency (min.): 200.00 kHz
Switching Frequency (max.): 1600.00 kHz
Output 1: 18.00 V / 6.000 A
Original publication on 2016-01-06, revision DS2857B-03
http://www.richtek.com/assets/product_file/RT2857B/DS2857B-03.pdf6A, 18V, Synchronous Step-Down ConverterThe RT2857B is a high efficiency, monolithic synchronousstep-down DC/DC converter that can deliver up to 6A outputcurrent from a 4.5V to 18V input supply. The RT2857Bcurrent-mode architecture with external compensationallows the transient response to be optimized over a widerange of loads and output capacitors. Cycle-by-cyclecurrent limit provides protection against shorted outputsand soft-start eliminates input current surge during startup.Fault condition protections include output over-currentprotection, output over-voltage protection, and overtemperatureprotection. The low current shutdown modeprovides output disconnection, enabling easy powermanagement in battery-powered systems.
- Low RDS(ON) Power MOSFET Switches 26mΩ/19mΩ Input Voltage Range : 4.5V to 18V Adjustable Switching Frequency : 200kHz to 1.6MHz Current-Mode Control Synchronous to External Clock : 200kHz to 1.6MHz Accurate Voltage Reference 0.6V ± 1%, Over −40°Cto 85°C Monotonic Start-Up into Pre-biased Outputs Adjustable Soft-Start Power Good Indicator Over-Current Protection Over-Temperature and Over-Voltage Protection Input Under-Voltage Lockout RoHS Compliant and Halogen Free
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