LT8644SIV#TRPBF
Active8V, 16A SYNCHRONOUS STEP-DOWN SILENT SWITCHER 2
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LT8644SIV#TRPBF
Active8V, 16A SYNCHRONOUS STEP-DOWN SILENT SWITCHER 2
Technical Specifications
Parameters and characteristics for this part
| Specification | LT8644SIV#TRPBF |
|---|---|
| Current - Output | 16 A |
| Frequency - Switching [Max] | 3.5 MHz |
| Frequency - Switching [Min] | 300 kHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -40 C |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Package / Case | 24-TFQFN Exposed Pad |
| Supplier Device Package | 24-LQFN |
| Supplier Device Package [x] | 4 |
| Supplier Device Package [y] | 4 |
| Synchronous Rectifier | True |
| Topology | Buck |
| Voltage - Input (Max) [Max] | 8 V |
| Voltage - Input (Min) [Min] | 1.5 V |
| Voltage - Output (Max) [Max] | 8 V |
| Voltage - Output (Min/Fixed) | 0.6 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | Updated |
|---|---|---|---|---|
| Digikey | N/A | 0 | $ 4.56 | 1m+ |
Description
General part information
LT8644S Series
The LT8644S synchronous step-down regulator features second generation Silent Switcher architecture designed to minimize EMI emissions while delivering high efficiency at high switching frequencies. This includes the integration of bypass capacitors to optimize all the fast current loops inside 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 20ns minimum on-time allows high step down ratios even at high switching frequencies. External compensation via the VCpin allows for fast transient response. PolyPhase operation allows multiple LT8644S regulators to run with interleaving phase shift to provide more output current.Burst Mode operation enables low standby current consumption, forced continuous mode can control frequency harmonics across the entire output load range, or spread spectrum operation can further reduce EMI emissions. Soft-start and tracking functionality is accessed via the SS pin, and an accurate input voltage UVLO threshold can be set using the EN/UV pin.APPLICATIONSAutomotive and Industrial SuppliesGeneral Purpose Step-Down Conversion
