The SIC403BCD-T1-GE3 is an advanced standalone Synchronous Buck Regulator with programmable LDO featuring integrated power MOSFETs, bootstrap switch. The SiC403B is capable of operating with all ceramic solutions and switching frequencies up to 1MHz. The programmable frequency, synchronous operation and selectable power-save allow operation at high efficiency across the full range of load current. The internal LDO may be used to supply 5V for the gate drive circuits or it may be bypassed with an external 5V for optimum efficiency. Additional features include cycle-by-cycle current limit, voltage soft-start, under-voltage protection, programmable over-current protection, soft shutdown and selectable power-save. The Vishay Siliconix SiC403B also provides an enable input and a power good output.
- High efficiency (>93%)
- 6A continuous output current capability
- Integrated bootstrap switch
- Programmable 200mA LDO with bypass logic
- Temperature compensated current limit
- All ceramic solution enabled
- Pseudo fixed-frequency adaptive on-time control
- Programmable input UVLO threshold
- Independent enable pin for switcher and LDO
- Selectable power-save mode (SiC403B)
- Programmable soft-start
- 1% internal reference voltage
- Power good output
- Over-voltage and under-voltage protections
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