SC2643VX: Combi-Sense™ Multi-Platform Multi-Phase PWM Controller

• VRD/VRM 10.X, VRM 9.X, and K-8 compliant
• Core voltage set point accuracy 0.5%
• Combi-Sense™ current-mode control
• Intrinsic phase current matching
• Fast transient responses
• Active droop with temperature compensation to meet load line slope
• Support VID-on-fly with 5-bit or 6-bit VID
• Enable function for power sequencing
• Cycle-by-cycle peak current limit
• Intelligent over-current shut-down
• Over-voltage protection when using Semtech Combi-Sense™ driver
• Under-voltage protection built in
• External programmable soft-start
• Externally programmable switching frequency (up to 2.8 MHz output voltage ripple frequency)
• 2-phase, 3-phase, or 4-phase configurations
• 24-pin SOIC or TSSOP package

Typical Application Circuit

Click diagram to enlarge

• Voltage regulator VRD/VRM 10.X
• Voltage regulator VRM 9.X
• Voltage regulator K-8
• High-current, low-voltage step-down DC/DC converters

TSSOP-24

• SC2643VXTSTR: Package Minimum Tape & Reel Only
• SC2643VXTSTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only