LT8611IUDD#PBF Model Information

1. Part Number:

• LT8611IUDD#PBF
• 2. Description:
• The LT8611IUDD#PBF is a 42V, 2.5A synchronous step-down regulator with current sense and 2.5µA quiescent current. It features a built-in current sense amplifier with monitor and control pins, enabling accurate input or output current regulation and limiting. The regulator operates in low ripple Burst Mode for high efficiency down to very low output currents.
• 3. Package:
• Type: 24-Lead Plastic QFN (3mm × 5mm)
• Dimensions: 3mm × 5mm
• Pin Count: 24
• 4. Features:
• Input Voltage Range: 3.4V to 42V
• Output Voltage Range: Adjustable (0.97V reference)
• Output Current: Up to 2.5A
• Quiescent Current: 2.5µA
• Burst Mode Operation: High efficiency at low output currents
• SYNC Pin: Allows synchronization to an external clock
• Internal Compensation: Peak current mode topology
• EN/UV Pin: Accurate 1V threshold for VIN undervoltage lockout or shutdown
• TR/SS Pin: Programs output voltage ramp rate during start-up
• PG Flag: Indicates when VOUT is within ±9% of the programmed output voltage
• Exposed Pad: For low thermal resistance
• 5. Absolute Maximum Ratings:
• VIN, EN/UV, PG, ISP, ISN: 42V
• BIAS: 30V
• BST Pin Above SW Pin: 4V
• FB, TR/SS, RT, INTVCC, IMON, ICTRL: 4V
• SYNC Voltage: 6V
• Operating Junction Temperature Range: -40°C to 125°C
• Storage Temperature Range: -65°C to 150°C
• 6. Ordering Information:
• Part Number: LT8611IUDD#PBF
• Pad or Ball Finish: Lead-Free
• Package Type: 24-Lead Plastic QFN
• MSL Rating: 3
• Temperature Range: -40°C to 125°C
• 7. RoHS Compliance:
• The LT8611IUDD#PBF is RoHS compliant.
• 8. Applications:
• Automotive and Industrial Supplies
• General Purpose Step-Down
• CCCV Power Supplies
• Rail-to-Rail Current Sense Amplifier with Monitor