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LT3991EDD#PBF
LT3991EDD#PBF - Brand New Analog Devices / Linear Technology DC Switching Regulators
Credit Card - One-month free return and one year warranty.
- Full or Partial Refund, if the item is not as described
- Full Refund if you don't receive your order
DescripTion
The LT®3990 is an adjustable frequency monolithic buck switching regulator
that accepts a wide input voltage range up to 62V, and consumes only 2.5µA of
quiescent current. A high efficiency switch is included on the die along with
the catch diode, boost diode, and the neces sary oscillator, control and logic
circuitry. Low ripple Burst Mode operation maintains high efficiency at low
output currents while keeping the output ripple below 5mV in a typical
application. Current mode topology is used for fast transient response and
good loop stability. A catch diode current limit provides protection against
shorted outputs and overvoltage conditions. An accurate programmable
undervoltage lockout feature is available, producing a low shutdown current of
0.7µA. A power good flag signals when VOUT reaches 90% of the programmed
output voltage. The
LT3990 is available in small, thermally enhanced 16-pin MSOP and 3mm × 3mm DFN
packages.
Features
Low Ripple Burst Mode® Operation
2.5µA IQ at 12VIN to 3.3VOUT
Output Ripple < 5mVP-P
Wide Input Voltage Range: 4.2V to 62V Operating
Adjustable Switching Frequency: 200kHz to 2.2MHz
Integrated Boost and Catch Diodes
350mA Output Current
Accurate Programmable Undervoltage Lockout
FMEA Fault Tolerant (MSOP Package)
Output Stays at or Below Regulation Voltage During
Adjacent Pin Short or When a Pin is Left Floating
Low Shutdown Current: IQ = 0.7µA
Internal Sense Limits Catch Diode Current
Power Good Flag
Small, Thermally Enhanced 16-Pin MSOP and (3mm × 3mm) DFN Packages
Applications
Automotive Battery Regulation
Power for Portable Products
Industrial Supplies
Shipping
| First item | Additional item | Service | Description |
|---|---|---|---|
| $0.00 | Free | Free Shipping | Estimated 15-30 business days via Registered Air Mail or others |
| $27.50 | Free | Expedited Shipping | Estimated delivery time is 3-5 business days, with some areas possibly taking 6-9 business days depending on the shipping address. The main courier companies include but are not limited to UPS, DHL, and FedEx. |
| $0.00 | Free | Buyer cooperating carrier | Using buyer's cooperating carrier. Buyer should create a shipping label and share it to us. And then we will call carrier for pickup |
| $38.00 | Free | Expedited Shipping | Estimated delivery time is 3-5 business days, with some areas possibly taking 6-9 business days depending on the shipping address. The main courier companies include but are not limited to UPS, DHL, and FedEx. |
Delivery
- The transportation time may be delayed due to customs clearance, local holidays or abnormal events.
- The estimated time is based on the fastest speed provided by commercial couriers (DHL, FedEx, UPS etc).
- The estimated time does not include the lead time of the item. The lead time of most items is 2–5 business days. If more than 5 working days are needed, we will manually confirm with you.
| Flag | Country | Express Delivery | Standard Delivery |
|---|---|---|---|
 | United States | 3 - 5 days | 10-15 days |
 | Canada | 3 - 5 days | 10-20 days |
 | Mexico | 3 - 5 days | 10-17 days |
 | Germany | 3 - 5 days | 10-12 days |
 | Italy | 3 - 5 days | 10-15 days |
 | United Kingdom | 3 - 5 days | 10-12 days |
Estimated Delivery
This item requires 2-5 business days for processing before shipping after payment is confirmed. And depending on the destination and shipping method.
Return Policy
| Return window | Refund type | Return shipping |
|---|---|---|
| 60 days after receiving item | Money Back or Replacement | Buyer pays for return shipping |
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