Microchip

LX7104
Demoboard LX7104

LX7104 1.4MHz 1.5A Asynchronous Buck Converter

Topology: Buck
Input Voltage (min.): 4.50 V
Input Voltage (max.): 18.00 V
Output 1: 15.00 V / 1.500 A

Original publication on 2019-01-10, revision 1.0

Description

The LX7104 is a 1.4MHz fixed frequency, current mode, PWM buck (step-down) DC-DC converter, capable of driving a 1.5A load with high efficiency, excellent line and load regulation. The device integrates a N-channel power MOSFET switch with low on-resistance. The converter accepts a wide input voltage range from 4.5V to 18V, and provides an output voltage adjustable typically from 0.81 to 15V.Soft-start is built in, and current mode control provides fast transient response and cycle-by-cycle current limit. Short circuit protection will be triggered when current is over limit and FB is below 0.25V.The LX7104ISF is available in SOT23-6 package.

Characteristics

  • Input Supply Range: 4.5V to 18V
  • Output Voltage Adjustable from 0.81V to 15V
  • Integrated High-Side NMOS Switch
  • Current Mode Control
  • Output Current: 1.5A
  • Fixed 1.4MHz Frequency
  • High Efficiency: Up To 92%
  • Built-in Soft-start
  • Built-in OV, UV & OT Protection
  • Cycle-by-cycle Over Current Protection
  • Short Circuit Protection
  • RoHS Compliant & Halogen Free

Products

  Order Code SPEC Product series C
(nF)
Tol. C VR
(V (DC))
Bauform H
(mm)
Keramiktyp Technische Artikelnummer DF
(%)
L
(µH)
IR
(A)
ISAT
(A)
RDC typ.
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
Montageart Samples
885012007009 PDF WCAP-CSGP MLCCs 10 V(DC) 10 ±5% 10 0805 1.25 NP0 Class I NP00805103J010DFCT10000
885012107005 PDF WCAP-CSGP MLCCs 6.3 V(DC) 22 ±20% 6.3 0805 1.25 X5R Class II X5R0805226M6R3DFCT10000 15
885012207016 PDF WCAP-CSGP MLCCs 10 V(DC) 100 ±10% 10 0805 0.8 X7R Class II X7R0805104K010DFCT10000 5
885012208069 PDF WCAP-CSGP MLCCs 25 V(DC) 10 ±10% 25 1206 1.6 X7R Class II X7R1206106K025DFCT10000 10
74438357047 PDF WE-MAPI SMT Power Inductor 4.7 3.9 6.4 39.9 44 24 SMT