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L4973D5
L4973D5 - Brand New STMicroelectronics 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 L4973 is a step down monolithic power switching regulator delivering 3.5A
at fixed voltages of 3.3V or 5.1V and using a simple external divider output
adjustable voltage up to 50V.
Realized in BCD mixed technology, the device uses an internal power D-MOS
transistor (with a typical Rdson of 0.15ohm) to obtain very high efficiency
and very fast switching times.
Switching frequency up to 300KHz are achievable (the maximum power dissipation
of the packages must be observed).
A wide input voltage range between 8V to 55V and output voltages regulated
from 3.3V to 40V cover the majority of the today applications.
■ UP TO 3.5A STEP DOWN CONVERTER
■ OPERATING INPUT VOLTAGE FROM 8V TO 55V
■ 3.3V AND 5.1V (±1%) FIXED OUTPUT, AND ADJUSTABLE OUTPUTS FROM:
0V TO 50V (3.3V type)
5.1V TO 50V (5.1 type)
■ FREQUENCY ADJUSTABLE UP TO 300KHz
■ VOLTAGE FEED FORWARD
■ ZERO LOAD CURRENT OPERATION (min 1mA)
■ INTERNAL CURRENT LIMITING (PULSE BY PULSE AND HICCUP MODE)
■ PRECISE 5.1V (1.5%) REFERENCE VOLTAGE EXTERNALLY AVAILABLE
■ INPUT/OUTPUT SYNCHRONIZATION FUNCTION
■ INHIBIT FOR ZERO CURRENT CONSUMPTION (100µA Typ. at VCC = 24V)
■ PROTECTION AGAINST FEEDBACK DISCONNECTION
■ THERMAL SHUTDOWN
■ OUTPUT OVERVOLTAGE PROTECTION
■ SOFT START FUNCTION
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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