Richtek

RT2856
Demoboard EVB_RT2856GQW-00

6A, 18V, Synchronous Step-Down Converter

Topology: Buck
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: 3.30 V / 6.000 A

Original publication on 2016-04-22, revision 1.0

Description

RT2856GQWThe RT2856GQW is a high efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 6A output current from a 4.5V to 18V input supply. The RT2856GQW current-mode architecture with external compensation allows the transient response to be optimized over a wide range of loads and output capacitors. Cycle-by-cycle current limit provides protection against shorted outputs and soft-start eliminates input current surge during startup. Fault condition protections include output under-voltage protection, output over-voltage protection, and overtemperature protection. The low current shutdown mode provides output disconnection, enabling easy power management in battery-powered systems.

Characteristics

  • Remark: bom is there in user guideLow 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 0.8V±1%, Over
  • 40°C to 85°C • Monotonic Start-Up into Pre-biased Outputs • Adjustable Soft-Start • Power Good Indicator • Under-Voltage and Over-Voltage Protection • Input Under-Voltage Lockout • RoHS Compliant and Halogen Free

Products

  Order Code SPEC Product series L
(µH)
IR
(A)
LR
(µH)
ISAT
(A)
RDC
(mΩ)
fres
(MHz)
Material Version Samples
7443551370 PDF WE-HCI SMT Flat Wire High Current Inductor 3.7 17 2.6 16 4.9 26 WE-PERM SMT