Semtech

SC4524F

18V 2A Step-Down Switching Regulator

Topology: Buck
Input Voltage (min.): 10.00 V
Input Voltage (max.): 16.00 V
Switching Frequency (min.): 200.00 kHz
Switching Frequency (max.): 2000.00 kHz
Output 1: 5.00 V / 1.000 A

Original publication on 2016-05-02, revision 2.0

Description

The SC4524F is a constant frequency peak current-modestep-down switching regulator capable of producing 2Aoutput current from an input ranging from 3V to 18V. Theswitching frequency of the SC4524F is programmableup to 2MHz, allowing the use of small inductors andceramic capacitors for miniaturization, and high input/output conversion ratio. The SC4524F is suitable fornext generation XDSL modems, high-definition TVs andvarious point of load applications.Peak current-mode PWM control employed in theSC4524F achieves fast transient response with simple loopcompensation. Cycle-by-cycle current limiting and hiccupoverload protection reduces power dissipation duringoutput overload. Soft-start function reduces input startupcurrent and prevents the output from overshootingduring power-up.The SC4524F is available in SOIC-8 EDP package.

Characteristics

  • Wide Input Voltage Range: 3V to 18V2A Output Current200kHz to 2MHz Programmable FrequencyPrecision 1V Feedback VoltagePeak Current-Mode ControlCycle-by-Cycle Current LimitingHiccup Overload Protection with Frequency FoldbackSoft-Start and EnableThermal ShutdownThermally Enhanced 8-pin SOIC PackageFully RoHS and WEEE CompliantRemarks:Table 5. Recommended inductance (L1) and compensator (R7, C5, C8).

Products

  Order Code SPEC Product series L
(µH)
IR
(A)
ISAT
(A)
RDC typ.
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
Bauform Version Samples
7447789006 PDF WE-PD SMT Power Inductor 6.8 2.5 2.75 42 44 38 7332 Robust

Other applications and Würth Elektronik products for this IC

  • SC4524F
    Topology: Buck, Input Voltage (min.): 10.00 V, Input Voltage (max.): 16.00 V, Switching Frequency (min.): 200.00 kHz, Switching Frequency (max.): 2000.00 kHz, Output 1: 5.00 V / 2.000 A