Teknik Özellikler
This is a wide-input synchronous step-down DC-DC microBUCK switching regulator IC from Vishay Siliconix, integrating high-side and low-side power MOSFETs inside a single chip, featuring ultra-wide input voltage range, high conversion efficiency and comprehensive built-in protection circuits。
Part Number Definition
SIC463 represents the core model of 4A output microBUCK buck regulator in the SiC46x product series. ED stands for MLP55-27L enhanced heat dissipation surface mount package. T1 means tape-and-reel packaging for automated SMT feeding on production lines. GE3 refers to lead-free and halogen-free environmentally compliant industrial grade version。
Core Electrical Specifications
- Input voltage range: 4.5V ~ 60V, suitable for 12V/24V/48V industrial bus power supply direct power input
- Output parameter: single channel adjustable output voltage 0.8V ~ 55.2V, maximum continuous output current 4A
- Switching frequency can be configured between 100kHz and 2MHz, peak conversion efficiency up to 98%
- Built-in independent enable pin, power good (PGOOD) status signal output, user programmable soft-start function to suppress inrush current during power-up
- Full protection mechanisms integrated: input undervoltage lockout UVLO, overcurrent OCP, output overvoltage OVP, output undervoltage UVP, short-circuit SCP and overthermal shutdown OTP
- Two optional light-load working modes (power saving / ultrasonic mode) to improve energy efficiency under light load conditions; output voltage precision within ±1% across the full temperature range
Packaging and Assembly Requirements
Package adopts PowerPAK MLP55-27L leadless exposed pad QFN package, size 5mm×5mm×0.75mm. The bottom large-area metal pad optimizes thermal conduction and restricts temperature rise under continuous heavy load operation. Moisture sensitivity level is MSL3; reflow soldering must be completed within 168 hours after opening the original vacuum packaging. Standard reel packaging is adopted to match fully automatic placement equipment on production lines。
Environmental and Compliance Standards
Operating ambient temperature range is -40℃ ~ +105℃, junction temperature working range extends to -40℃ ~ +125℃, capable of stable operation in industrial field equipment, outdoor monitoring devices and communication power modules. The whole device is lead-free and halogen-free, fully complying with international RoHS environmental restriction standards. Highly integrated design greatly reduces peripheral component count and PCB layout area compared with discrete MOSFET plus controller schemes。
Tipik Uygulama Alanları
Industrial control equipment 24V/48V to low-voltage multi-point power supply modules Telecommunication equipment, network switches and server auxiliary board step-down power circuits Vehicle-mounted electronic auxiliary power conversion and on-board equipment power management units Field monitoring sensors, data acquisition terminals and battery-powered portable instrument power modules Medical equipment power supply boards, automated test equipment and embedded system multi-rail voltage conversion circuits
LXB Semicon supplies original Vishay SIC463ED-T1-GE3 wide-input 4A synchronous buck DC-DC regulator IC
