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Product Detailed Parameters
- Description：IC REG DL BUCK/LNR SYNC MLP55-32
- Series：microBUCK®
- Mfr：Vishay Siliconix
- Package：Tape & Reel (TR),Cut Tape (CT)
- Topology：Step-Down (Buck) Synchronous (1), Linear (LDO) (1)
- Number of Outputs：2
- Frequency - Switching：200kHz ~ 1MHz
- Voltage/Current - Output 1：0.6V ~ 5.5V, 6A
- Voltage/Current - Output 2：Adj to 0.75V, 200mA
- Voltage/Current - Output 3：-
- w/LED Driver：No
- w/Supervisor：No
- w/Sequencer：No
- Voltage - Supply：3V ~ 28V
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：32-PowerWFQFN
- Supplier Device Package：PowerPAK® MLP55-32
- Grade：-
- Qualification：-
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Overview
The SIC403BCD-T1-GE3 is a synchronous step-down DC/DC converter from the MicroBUCK series by Vishay Siliconix. It operates with an input voltage range of 3 V to 28 V and delivers up to 6 A output current. The adjustable output voltage spans from 750 mV to 5.5 V. Switching frequency is programmable between 200 kHz and 1 MHz. Quiescent current is 130 uA. It functions within a temperature range of -40 C to +125 C and utilizes an MLPQ55-32 package.
Feature Summary
- Synchronous buck topology for high efficiency
- Programmable switching frequency
- Wide input voltage capability
- Integrated control circuitry
Applications
- Point-of-load regulation
- Industrial equipment power supplies
- Telecommunications systems
- Embedded computing boards
Procurement Notes
Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status via official datasheets. Check for obsolescence notices as availability may vary. Ensure packaging specifications match design requirements. Validate part markings against official documentation.
Selection Notes
Evaluate thermal performance based on PCB layout and ambient conditions. Consider inductor selection relative to the chosen switching frequency. Verify input capacitor ratings for ripple current handling. Assess load transient response requirements against internal compensation capabilities. Match package thermal characteristics to system constraints.
Part Context
This component belongs to the SIC403 family of synchronous regulators. It shares architectural similarities with other MicroBUCK devices but offers specific pinout and parameter configurations. The MLPQ55-32 package provides enhanced thermal dissipation compared to smaller footprints. It serves as a compact solution for medium-current applications requiring wide input ranges.
Replacement Considerations
The SIC403CD-T1-GE3 is listed as a related alternative within the same product line. Verify pin compatibility and electrical parameters before substitution. Ensure package dimensions match existing board layouts. Confirm that feature sets align with original design intent.
