MIC3289-24YD6-TR More Semiconductors - ICs by Microchip Technology
1.2MHz 0.5A Switch WLED Driver with Digital Brightness Control
| Status: | Active |
|---|---|
| Series: | MIC3289 |
| RoHS: | Compliant |
The MIC3289 is a PWM boost-switching regulator that is optimized for constant-current white LED driver applications. The MIC3289 features an internal Schottky diode, allowing an efficient DC/DC solution that requires only four external components.
The MIC3289 allows for a single wire simple digital interface to control the dimming over 16 steps with a log scale to give better resolution at the lower currents to better match the sensitivity of the human eye. The pre-programming feature allows the user to select any one of the 16 WLED current levels as the start-up brightness level.
The feedback voltage of the MIC3289 is only 250mV, allowing high efficiency while retaining excellent accuracy for the white LED current.
The MIC3289 implements a constant frequency 1.2MHz PWM control scheme. The high frequency PWM operation saves board space by reducing external component sizes. The 1.2MHz PWM scheme also reduces switching noise and ripple to the input power source.
The 2.5V to 6.5V input voltage range of MIC3289 allows direct operation from single cell Li-Ion as well as 3- to 4-cell NiCad/NiMH/Alkaline batteries. Battery life is preserved with a low 1µA shutdown current.
The MIC3289 is available in a low profile Thin SOT23 6-lead package and has a junction temperature range of -40°C to +125°C.
Features
| Single wire combines 16 level logarithmic brightness and shutdown control |
| 16V/24V OVP options supports up to 4 and 6 WLEDs |
| Start-up in any one of 16 brightness levels |
| Internal Schottky diode |
| 2.5V to 6.5V input voltage |
| 1.2MHz PWM operation |
| Over 500mA switch current |
| 250mV reference voltage |
| ±5% LED current accuracy |
| <1µA shutdown current |
| Over temperature protection |
| UVLO |
| Thin SOT23-6L package option |
| -40°C to 125°C junction temperature range |
Specifications
| Topology | Boost |
|---|---|
| +Vin min (V) | 2.5 |
| +Vin max (V) | 6.5 |
| Output Current | 2A BJT |
| Dimming | 1-Wire |
| Package | TSOT, VDFN |
| Product Type | LED Backlight |
| VOUT | 24 |
| llim Typ (A) | 0.75 |
| llim Max (A) | 1.2 |
| lq Typ | 1.4mA |
| Int Diode | Yes |
| Vfb (V) | 0.25 |
| Tol Typ % | ±5 |
| Duty Cycle Max | 0.9 |
| Freq (Hz) | 1.2M |
| OVP | Yes |
| VEN (V) | 1.1 |
| EN | Yes |
| UVLO Typ (V) | 2.1 |
| Ceramic Cap | Yes |
| Oja (C/W) | 235, 93 |
| Pins | Packaging | 6 | TSOT |
| Temp Range | -40C to +125C |
| Packing Media | Tape and reel (3000) |
Environmental Information
| JEDEC Indicator | e4 |
|---|---|
| ROHS | Compliant |
| China EFUP | Compliant |
| Device Weight (g) | 0.0124 |
| Shipping Weight (kg) | 0.1496 |
| Lead Count | 6 |
| Package Type | TSOT |
| Package Width or Size | 2.9x1.6x1.0mm |
| Soldering Composition | NiPdAu |
Alternative Descriptions
| 1.2Mhz 0.5A Switch Wled Driver With Digital Brightness Control 6 Tsot 2.9X1.6X1.0Mm T/R Rohs Compliant: Yes |Microchip MIC3289-24YD6-TR | Newark Electronics |
| MIC3289 Series 500 mA 6.5 V 1.2 MHz SMT PWM White LED Driver - TSOT-23-6 | Future Electronics |
| LED DRVR Boost 1-CH 1-Wire 24V 1.2A 6-Pin TSOT-23 T/R | Avnet America |
Frequently Asked Questions
Where can I find additional details, specifications and documents for a MIC3289-24YD6-TR?
Additional datasheets, footprints and schematics for MIC3289-24YD6-TR are listed on our Part Details page. You can also find images and similar parts to MIC3289-24YD6-TR on this page.
What pricing and inventory information can I view?
Distributor pricing and stock information is available for MIC3289-24YD6-TR on our Product Comparison page. Access via the 'View Pricing & Stock' button to view MIC3289-24YD6-TR price breaks, MOQs, lead times, inventory and SKUs from distributors.
What category does MIC3289-24YD6-TR fall under?
The MIC3289-24YD6-TR is listed under Semiconductors - ICs > More Semiconductors - ICs.
Can I view similar or alternative parts?
You can view similar parts to MIC3289-24YD6-TR when available in the More Semiconductors - ICs range under the specifications section at the bottom of the details page.
Who can I contact for technical support of the product?
Submit any questions directly to the customer support team of the distributor listing the product. For the MIC3289-24YD6-TR you can contact the distributor directly for product support, shipping queries etc.
Is the MIC3289-24YD6-TR RoHS compliant?
Yes. This part has been flagged as RoHS Compliant by Microchip Technology.
Which authorised distributors for MIC3289-24YD6-TR have stock available?
Authorised distributors including Newark Electronics, Future Electronics, Avnet America, EBV Elektronik and Avnet Silica have stock available or on a lead time for MIC3289-24YD6-TR.
How do I check stock and lead times for all distributors?
Stock availability and lead times will be displayed for MIC3289-24YD6-TR often in real-time on the comparison pages.
What if I can't find stock of MIC3289-24YD6-TR?
You can fill out our help required form which you can use to request a quote for MIC3289-24YD6-TR from some of our verified obsolescence suppliers. Alternatively, contact us via our web chat in the bottom left of your screen and one of our team will try to help.