Datasheet for LT3640IFE#PBF:
- Manufacturer Part Number : LT3640IFE#PBF
- Manufacturer : AD
- Description : Dual Monolithic Buck Regulator with Power-On Reset and Watchdog Timer IC
- Series : LT3640
- Reference Price : USD 3.248
- Our Price : We have a better price, contact us by email
- Product Type : Switching Regulators
- Function : Step-Down (Buck) Regulators
- Current Suggest : Production
- Status : Production
- ROHS Status : ROHS Compliant (Lead Free)
- Package Type : 28-Lead TSSOP w/ EP
- Pins : 28
- MFG Package Case : 05-08-1663 (EB)
- Part Type : OTH
- Standard Packing Type : Tube
- Standard Packing Quantity : 50
- Working Temperature : -40 to 125C
- Other Part Number : LT3640IFE#PBF
- 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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The LT3640 is a dual channel, current mode monolithic buck switching regulator with a power-on reset and a watchdog timer. Both regulators are synchronized to a single oscillator with an adjustable frequency (350kHz to 2.5MHz). At light loads, both regulators operate in low ripple Burst Mode® to maintain high efficiency and low output ripple.
The high voltage channel is a nonsynchronous buck with an internal 2.4A top switch that operates from an input of 4V to 35V; a 36.5V OVLO protects the device to 55V. The low voltage channel operates from an input of 2.5V to 5.5V. Internal synchronous power switches provide high efficiency without the need of external Schottky diode. Both channels have cycle-by-cycle current limit, providing protection against shorted outputs.
The power-on reset and watchdog timeout periods are both adjustable using external capacitors. The window mode watchdog timer flags when the μP pulses group too close together or too far apart.
The LT3640 is available in a 28-pin 4mm × 5mm QFN package and 28-pin TSSOP package. Both packages have an exposed pad for low thermal resistance.
Applications
- Industrial Power Supplies
- Automotive Electronic Control Units
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
