h1_key

• Three Highly Efficient Programmable Buck Regulators
  • Integrated FETs with Low R_DSON
  • Bucks Operate with Their Phases Shifted to Reduce
    the Input Current Ripple and Capacitor Size
  • Programmable Output Voltage via the SPI Interface
  • Over and Under-Voltage-Lockout
  • Automatic Internal Soft Start with Power-On-Reset
  • Current Overload and Thermal Shutdown Protection
  • PFM Mode for High Efficiency at Light Load Conditions
• Power-Down Data Protection Enhances Data Integrity
• Bypass Mode Available on Buck 1
• Sleep Mode to Save Power During Idle Times
  • DEVSLP Function
• SPI-Programmable Interrupt Comparator (2.0V to 4.0V)
• Factory Programmable Startup Sequencing for Varied Controllers
• Fast Startup for all Voltage Rails in about 3.5ms to PWR_OK
• Fast Turn-off / Active Discharge on Regulator Outputs

Key Specifications

• Single input rail with wide range: 3.3 to 5.5V
• Programmable Buck Regulator Outputs:
  • Buck 1: 1.1V to 3.6V; 1.6A
  • Buck 2: 1.1V to 3.6V; 1A
  • Buck 3: 0.7V to 1.95V; 2.5A
• ±3% feedback voltage accuracy
• Up to 95% efficient buck regulators
• 2MHz switching frequency for smaller inductor size
• 2.815mm, 3.215mm, 0.4mm pitch, 46 bump micro SMD package

Application

• Solid-State Drives

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