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LT3477EUF
LT3477EUF - Brand New Analog Devices / Linear Technology LED Drivers
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®3477 is a current mode, 3A DC/DC step-up converter with dual rail-to-
rail current sense amplifiers and an internal 3A, 42V switch. It combines a
traditional voltage feedback loop and two unique current feedback loops to
operate as a constant-current, constant-voltage source. Both current sense
voltages are set at 100mV and can be adjusted independently using the IADJ1
and IADJ2 pins. Efficiency of up to 91% can be achieved in typical
applications. The LT3477 features a programmable soft-start function to limit
inductor current during start-up. Both inputs of the error amplifier are
available externally allowing positive and negative output voltages (Boost,
Inverting, SEPIC, Flyback). The switching frequency is programmable from
200kHz to 3.5MHz through an external resistor.
Available in thermally enhanced 20-pin (4mm × 4mm) QFN and 20-pin TSSOP
packages, the LT3477 provides a complete solution for both constant-voltage
and constant-current applications.
FEATURES
■ Dual 100mV Rail-to-Rail Current Sense Amplifiers
■ Wide Input Voltage Range: 2.5V to 25V
■ 3A, 42V Internal Switch
■ High Efficiency Power Conversion: Up to 93%
■ Drives LEDs in Boost, Buck-Boost or Buck Mode
■ Frequency Set by External Resistor: 200kHz to 3.5MHz
■ Programmable Soft-Start
■ Low VCESAT Switch: 0.3V at 2.5A
■ Capable of Positive and Negative Output Voltages
(Boost, Inverting, SEPIC, Flyback)
■ Available in Thermally Enhanced 20-Lead
(4mm × 4mm) QFN and 20-Lead TSSOP Packages
APPLICATIONS
■ High Power LED Driver
■ DSL Modems
■ Distributed Power
■ Input/Output Current Limited Boost, SEPIC, Inverting, Flyback Converters
■ Constant-Voltage, Constant-Current Source
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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