Semtech

SC4503

1.3MHz Step-Up Switching Regulator with 1.4A Switch

Topology: Other

Original publication on 2016-04-12, revision 1.0

Description

SC4503EVBThe SC4503 is a 1.3MHz current-mode step-up switchingregulator with an integrated 1.4A power transistor.Its high switching frequency allows the use of tiny surface-mount external passive components. The SC4503features a combined shutdown and soft-start pin. Theoptional soft-start function eliminates high input currentand output overshoot during start-up. The internal compensationnetwork accommodates a wide range of voltageconversion ratios. The internal switch is rated at 34Vmaking the device suitable for high voltage applicationssuch as Boost and SEPIC.The SC4503 is available in low-profi le 5-lead TSOT-23 and8-lead 2X2mm MLPD-W packages. The SC4503’s lowshutdown current (< 1μA), high frequency operation andsmall size make it suitable for portable applications

Characteristics

  • Remarks- BOM is added with Main pdfLow Saturation Voltage Switch: 260mV at 1.4A

Products

  Order Code SPEC Product series L
(µH)
IR
(A)
ISAT
(A)
RDC typ.
(Ω)
RDC max.
(Ω)
fres
(MHz)
Samples
744773047 PDF WE-PD2 SMT Power Inductor 4.7 1.82 2.46 0.059 0.11 50