DESCRIPTION
The Vishay Siliconix SiC402A/B an advanced stand-alone synchronous buck regulator featuring integrated power MOSFETs, bootstrap switch, and a programmable LDO in a space-saving PowerPAK MLP55-32L pin packages. The SiC402A/B are capable of operating with all ceramic solutions and switching frequencies up to 1 MHz. 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 5 V for the gate drive circuits or it may be bypassed with an external 5 V for optimum efficiency and used to drive external n-channel MOSFETs or other loads. 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 SiC402A/B also provides an enable input and a power good output.
FEATURES
• High efficiency > 95 %
• 10 A continuous output current capability
• Integrated bootstrap switch
• Programmable 200 mA LDO with bypass logic
• Temperature compensated current limit
• Pseudo fixed-frequency adaptive on-time control
• All ceramic solution enabled
• Programmable input UVLO threshold
• Independent enable pin for switcher and LDO
• Selectable ultra-sonic power-save mode (SiC402A)
• Selectable power-save mode (SiC402B)
• Programmable soft-start and soft-shutdown
• 1 % internal reference voltage
• Power good output
• Over-voltage and under-voltage protections
• Material categorization: For definitions of compliance please see www.vishay.com/doc?99912
Feature
- High efficiency >95%
- 10A 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 ultra-sonic power-save mode (SiC402A)
- Programmable soft-start and soft-shutdown
- 1% internal reference voltage
- Power good output
- Over-voltage and under-voltage protections
(Picture: Pinout)