Richtek

RT2805A
Demoboard RT2805AGSP

RT2805A Step-Down Converter Evaluation Board

Topology: Buck
Input Voltage (min.): 5.50 V
Input Voltage (max.): 36.00 V
Switching Frequency (min.): 400.00 kHz
Switching Frequency (max.): 600.00 kHz
Output 1: 2.40 V / 5.000 A

Description

The RT2805A is a current mode asynchronous step-down converter that achieves excellent load and line regulation.Over a wide input voltage range from 5.5V to 36V and supports output current up to 5A. The Current mode operation provides fast transient response and eases loop stabilization. An adjustable soft-start reduces the stress on the input source at start up. In shutdown mode, the regulator draws only 25μA of supply current. The RT2805A requires a minimum number of readily available external components, providing a compact solution. The RT2805A provides protection functions inducing input under voltage lockout, cycle-by-cycle current limit, short circuit protection and thermal shutdown protection. The RT2805A is available in the SOP-8 (Exposed Pad) package.

Characteristics

  • 5A Output Current
  • Wide Operating Input Range 5.5V to 36V
  • Adjustable Output Voltage from 1.222V to 26V
  • High Efficiency up to 90%
  • Internal Compensation Minimizes External Parts Count
  • Internal Soft-Start
  • 110mΩ Internal Power MOSFET Switch
  • 25μA Shutdown Mode
  • Fixed 500kHz Frequency
  • Thermal Shutdown
  • Cycle-by-Cycle Current Limit
  • Available In an SOP-8 (Exposed Pad) Package
  • RoHS Compliant and Halogen Free

Products

  Order Code SPEC Product series L
(µH)
IR
(A)
ISAT
(A)
RDC typ.
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
Montageart Samples
74437368068 PDF WE-LHMI SMT Power Inductor 6.8 6 14 17.5 23.3 13 SMT