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TK11850LTL
TK11850LTL - Brand New TOKO IC Chips
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 TK11850L is a pulse skipping step-up DC-DC converter IC designed for White
LED driver applications with the following built in: a very high current
switching transistor (400 mA peak), an inductor current limit detector, low
voltage reference (Vref = 0.5 V), high speed oscillator, an error comparator,
a rectifier diode (for small power output) and an ON/OFF control. The IC works
with a very wide operating supply range (2.3 V to 10 V) and the adjustable
output voltage can be set as high as 20 V. The device is in the ON state when
the EN pin is pulled to a high level. Using the very small TK11850L and a few
external components, battery powered systems with LCD displays such as digital
cameras and cellular phones can be effectively backlit with white LEDs. The
white LEDs are connected in series and driven at a constant current resulting
in uniform brightness
and high efficiency.
FEATURES
■ Very High Speed Adjustable OSC (Max 800 kHz)
■ Very Wide Operating Voltage Range (2.3 V to 10 V)
■ Low Loss Detector (Low Reference Voltage: VREF = 0.5 V)
■ Operates with Toko D31FU Miniature Coil (Current Limited by Input Current
Sensor)
■ Internal Switching Transistor
■ Internal Diode
■ Active High On / Off Control
■ Available Intensity Control Using EN Pin with PWM Signal
■ Very Small SOT23L-8 Surface Mount Package
APPLICATIONS
■ LED Backlighting and Frontlighting
■ LED Flashlights
■ Step-up DC-DC Converters
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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