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LT8650S Datasheet

LT8650S Datasheet

Dual Channel 4A, 42V, Synchronous Step-Down Silent Switcher 2 with 6.2µA Quiescent Current
Part No.: LT8650S
Page: 32 Pages
Size: 2265 KB
Manufacturer: Linear Technology
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Views: 1
Update Time: 2023-11-09 15:05:59
DataSheet: Download

LT8650S Datasheet Applicable Part

Part No. Packing SPQ Marking MSL Pins Temp Range Package Description Buy
LT8650SEV#PBF Tray 490 8650SV 3 32 -40°C ~ 125°C 32-Lead LQFN (6mm x 4mm x 0.94mm)  
LT8650SEV#TRPBF Reel 2500 8650SV 3 32 -40°C ~ 125°C 32-Lead LQFN (6mm x 4mm x 0.94mm)  
LT8650SEV#TRMPBF Reel 500 8650SV 3 32 -40°C ~ 125°C 32-Lead LQFN (6mm x 4mm x 0.94mm)  
LT8650SIV#PBF Tray 490 8650SV 3 32 -40°C ~ 125°C 32-Lead LQFN (6mm x 4mm x 0.94mm)  
LT8650SIV#TRPBF Reel 2500 8650SV 3 32 -40°C ~ 125°C 32-Lead LQFN (6mm x 4mm x 0.94mm)  
LT8650SIV#TRMPBF Reel 500 8650SV 3 32 -40°C ~ 125°C 32-Lead LQFN (6mm x 4mm x 0.94mm)  
LT8650SHV#PBF Tray 490 8650SV 3 32 -40°C ~ 150°C 32-Lead LQFN (6mm x 4mm x 0.94mm)  
LT8650SHV#TRPBF Reel 2500 8650SV 3 32 -40°C ~ 150°C 32-Lead LQFN (6mm x 4mm x 0.94mm)  
LT8650SHV#TRMPBF Reel 500 8650SV 3 32 -40°C ~ 150°C 32-Lead LQFN (6mm x 4mm x 0.94mm)  
LT8650SEV#WPBF Tray 490 8650SV 3 32 -40°C ~ 125°C 32-Lead LQFN (6mm x 4mm x 0.94mm)  
LT8650SEV#WTRPBF Reel 2500 8650SV 3 32 -40°C ~ 125°C 32-Lead LQFN (6mm x 4mm x 0.94mm)  
LT8650SEV#WTRMPBF Reel 500 8650SV 3 32 -40°C ~ 125°C 32-Lead LQFN (6mm x 4mm x 0.94mm)  
LT8650SIV#WPBF Tray 490 8650SV 3 32 -40°C ~ 125°C 32-Lead LQFN (6mm x 4mm x 0.94mm)  
LT8650SIV#WTRPBF Reel 2500 8650SV 3 32 -40°C ~ 125°C 32-Lead LQFN (6mm x 4mm x 0.94mm)  
LT8650SIV#WTRMPBF Reel 500 8650SV 3 32 -40°C ~ 125°C 32-Lead LQFN (6mm x 4mm x 0.94mm)  
LT8650SJV#WPBF Tray 490 8650SV 3 32 -40°C ~ 150°C 32-Lead LQFN (6mm x 4mm x 0.94mm)  
LT8650SJV#WTRPBF Reel 2500 8650SV 3 32 -40°C ~ 150°C 32-Lead LQFN (6mm x 4mm x 0.94mm)  
LT8650SJV#WTRMPBF Reel 500 8650SV 3 32 -40°C ~ 150°C 32-Lead LQFN (6mm x 4mm x 0.94mm)  
LT8650SHV#WPBF Tray 490 8650SV 3 32 -40°C ~ 150°C 32-Lead LQFN (6mm x 4mm x 0.94mm)  
LT8650SHV#WTRPBF Reel 2500 8650SV 3 32 -40°C ~ 150°C 32-Lead LQFN (6mm x 4mm x 0.94mm)  
LT8650SHV#WTRMPBF Reel 500 8650SV 3 32 -40°C ~ 150°C 32-Lead LQFN (6mm x 4mm x 0.94mm)  
SPQ:Standard Pack Quantity;MSL:Moisture Sensitivity Level

LT8650S Datasheet(PDF)

LT8650S Datasheet(Picture)

LT8650S Features

  • Silent Switcher®2 Architecture:
    • Ultralow EMI on Any PCB
    • Eliminates PCB Layout Sensitivity
    • Internal Bypass Capacitors Reduce Radiated EMI
    • Optional Spread Spectrum Modulation
  • 4A DC from Each Channel Simultaneously
  • Up to 6A on Either Channel
  • Ultralow Quiescent Current Burst Mode® Operation:
    • 6.2μA IQ Regulating 12VIN to 5VOUT1 and 3.3VOUT2
    • Output Ripple <10mVP-P
  • Forced Continuous Mode
  • Optional External VC Pin: Fast Transient Response and Current Sharing (Extra 50µA IQ/Channel)
  • High Efficiency at High Frequency
  • 94.6% Efficiency at 2A, 5VOUT from 12VIN at 2MHz
  • 93.3% Efficiency at 4A, 5VOUT from 12VIN at 2MHz
  • Fast Minimum Switch-On Time: 40ns
  • Wide Input Voltage Range: 3.0V to 42V
  • Adjustable and Synchronizable: 300kHz to 3MHz
  • Small 4mm × 6mm 32-Pin LQFN Package
  • AEC-Q100 Qualified for Automotive Applications

LT8650S Applications

  • General Purpose Step-Down
  • Automotive and Industrial Supplies

LT8650S Description

The LT8650S is a dual step-down regulator that delivers up to 4A of continuous current from both channels and supports loads up to 6A from each channel. The LT8650S features the second generation Silent Switcher architecture to minimize EMI emissions while delivering high efficiency at high switching frequencies. This includes integration of bypass capacitors to optimize high frequency current loops and make it easy to achieve advertised EMI performance by eliminating layout sensitivity.

The fast, clean, low-overshoot switching edges enable high efficiency operation even at high switching frequencies, leading to a small overall solution size. Peak current mode control with a 40ns minimum on-time allows high step down ratios at high switching frequencies.

Burst Mode operation features a 6.2μA quiescent current resulting in high efficiency at low output currents, forced continuous mode allows fixed switching frequency operation over the entire output load range, and spread spectrum operation can further reduce EMI emissions. External VC pins allow optimal loop compensation for fast transient response. The VC pins can also be used for current sharing and the CLKOUT pin enables synchronizing two LT8650S chips to generate a 4-phase, 16A supply.

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