Dual 30V Step-Down Switching Regulator with 2A Switches

Topology: Buck
Input Voltage (min.): 20.00 V
Input Voltage (max.): 28.00 V
Output 1: 3.30 V / 1.800 A
Output 2: 5.00 V / 1.800 A

Original publication on 2014-02-27, revision 2.4


(a) Synchronized 600kHz 24V to 5V and 3.3V Dual Step-down Converter.The free-running frequency of the regulator is set to 580kHz.(b) Efficiency(c) Switching Waveforms. VIN = 24V, IOUT1 = IOUT2 = 1A.(d) Start-up Waveforms. VIN = 24V, IOUT1 = IOUT2 = 0.5A.


  • Wide Input Voltage Range: 2.8V to 30VTwo Integrated 2A SwitchesUp to 2.5MHz per Channel Programmable ConstantSwitching FrequencyOut of Phase Switching Reduces Input RippleBoth Switching Regulators share a single Input FilteringCapacitor, Reducing CostExternal SynchronizationCycle-by-Cycle Current-limitingIndependent Soft-Start/Enable PinsIndependent Hiccup Overload ProtectionPower Good Indicators Ease Output SequencingLow Shutdown CurrentThermally Enhanced 16-pin TSSOP Lead Free PackageFully WEEE and RoHS Compliant


  Order Code SPEC Product series L
RDC typ.
RDC max.
Bauform Version Samples
744777910 PDF WE-PD SMT Power Inductor 10 2 2.6 45 49 26 7345 Robust
7447779112 PDF WE-PD SMT Power Inductor 12 1.82 2.4 50 58 23 7345 Robust