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MAX1839EEP
MAX1839EEP - Brand New Maxim Integrated Lighting, Ballast Controllers
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
General Description
The MAX1739/MAX1839 fully integrated controllers are optimized to drive cold-
cathode fluorescent lamps (CCFLs) using the industry-proven Royer oscillator
inverter architecture. The Royer architecture provides near sinusoidal drive
waveforms over the entire input range to maximize the life of CCFLs. The
MAX1739/MAX1839 optimize this architecture to work over a wide input voltage
range, achieve high efficiency, and maximize the dimming range.
The MAX1739/MAX1839 monitor and limit the transformer center-tap voltage when
required. This ensures minimal voltage stress on the transformer, which
increases the operating life of the transformer and eases its design
requirements. These controllers also provide protection against many other
fault conditions, including lamp-out and buck short faults.
These controllers achieve 50:1 dimming range by simultaneously adjusting lamp
current and “chopping” the CCFL on and off using a digitally adjusted pulse
width modulated (DPWM) method. CCFL brightness is controlled by an analog
voltage or is set with an SMBusTM-compatible two-wire interface (MAX1739).
The MAX1739/MAX1839 drive an external high-side N-channel power MOSFET and two
low-side N-channel power MOSFETs, all synchronized to the Royer oscillator. An
internal 5.3V linear regulator powers the MOSFET drivers and most of the
internal circuitry. The MAX1739/MAX1839 are available in space-saving 20-pin
QSOP packages and operate over the -40°C to +85°C temperature range.
Features
♦ Fast Response to Input Change
♦ Wide Input Voltage Range (4.6V to 28V)
♦ High Power-to-Light Efficiency
♦ Minimizes Transformer Voltage Stress
♦ Lamp-Out Protection with 2s Timeout
♦ Buck Switch Short and Other Single-Point Fault Protection
♦ Integrated Royer MOSFET Drivers Reduce Transformer Pin Count
♦ Buck Operation Synchronized to Royer Oscillator
♦ Synchronizable DPWM Frequency
♦ Pin-Selectable Brightness Control Interface
♦ SMBus Serial Interface (MAX1739)
♦ Analog Interface (MAX1739/MAX1839)
Applications
Notebook/Laptop Computers
Car Navigation Displays
LCD Monitors
Point-of-Sale Terminals
Portable Display Electronics
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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