Datasheet for LT8640
LT8640-1:
- Manufacturer Part Number : LT8640
LT8640-1 - Manufacturer : AD
- Description : 42V, 5A Synchronous Step-Down Silent Switcher with 2.5μA Quiescent Current
- Series : LT8640
LT8640-1 - Reference Price : USD 3.48
- Our Price : We have a better price, contact us by email
- Product Type : Switching Regulators
- Function : Step-Down (Buck) Regulators
- Current Suggest : Recommended for New Designs
- Status : Production
- RoHS Status: -
- Voltage: -
- Feature: -
- Package Case: -
- Temperature Range: -
- Packing: Reel/Tray/Tube
- Standard Packing Quantity: -
- Country of Origin: -
- Other Part Number : LT8640
LT8640-1 - Shipping methods : DHL FEDEX UPS TNT
- Delivery Time : Ship within 1 day.
- Manufacturer Production time : 6-8 weeks (Normally have stocks)
- Weight : 0.001KG
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LT8640-1. If you need any more information about LT8640
LT8640-1, you can also send us by email. Our email is [email protected], we will reply you in 12 hours.
LT8640-1
LT8640-1
- Silent Switcher® Architecture
- Ultralow EMI Emissions
- Spread Spectrum Frequency Modulation
- High Efficiency at High Frequency
- Up to 96% Efficiency at 1MHz, 12VIN to 5VOUT
- Up to 95% Efficiency at 2MHz, 12VIN to 5VOUT
- Wide Input Voltage Range: 3.4V to 42V
- 5A Maximum Continuous Output, 7A Peak Transient Output
- Ultralow Quiescent Current Burst Mode® Operation
- 2.5µA IQ Regulating 12VIN to 3.3VOUT
- Output Ripple < 10mVP-P
- Fast Minimum Switch On-Time: 30ns
- Low Dropout Under All Conditions: 100mV at 1A
- Forced Continuous Mode (LT8640-1 Only)
- Safely Tolerates Inductor Saturation in Overload
- Adjustable and Synchronizable: 200kHz to 3MHz
- Peak Current Mode Operation
- Output Soft-Start and Tracking
- Small 18-Lead 3mm × 4mm QFN and Side Wettable QFN
- AEC-Q100 Qualified for Automotive Applications
LT8640-1
The LT8640/LT8640-1 step-down regulator features Silent Switcher architecture designed to minimize EMI emissions while delivering high efficiency at frequencies up to 3MHz. An ultralow 2.5µA quiescent current—with the output in full regulation—enables applications requiring highest efficiency at very small load currents.
The LT8640/LT8640-1 allows high VIN to low VOUT conversion at high frequency with a fast minimum top switch on-time of 30ns. The SYNC/MODE pin selects between Burst Mode operation, spread spectrum mode, synchronization to an external clock, and either pulse-skipping (LT8640) or forced continuous mode (LT8640-1).
| Package | SYNC/MODE ≠ 0 | VC COMP | H-GRADE | CLKOUT | INTERNAL CAPS | |
| LT8640 | QFN | Pulse-Skipping | Internal | Yes | No | No |
| LT8640-1 | QFN | FCM | Internal | Yes | No | No |
| LT8640S | LQFN | FCM | Internal | No | Yes | Yes |
| LT8643S | LQFN | FCM | External | No | Yes | Yes |
| LT8640S-2 | LQFN | FCM | Internal | Yes | Yes | No |
| LT8643S-2 | LQFN | FCM | External | Yes | Yes | No |
Applications
- Automotive and Industrial Supplies
- General Purpose Step-Down
- GSM Power Supplies
LT8640-1
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
LT8640-1 More photos
