MCP1643-I/MS LED Driver ICs by Microchip Technology
1MHz Low Start-up Voltage Synchronous Boost LED Constant Current Regulator
| Status: | Active |
|---|---|
| Series: | MCP1643 |
| RoHS: | Compliant |
Where to Buy
Prices starting from US$0.54
| Distributor | Stock | ||
|---|---|---|---|
|
Microchip Technology
from US$0.97
|
7,342
in stock
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|
RS
from US$0.85
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1,090
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TME
from US$1.68
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105
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ECOM
from US$1.17
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2
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Newark Electronics
from US$1.03
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Avnet America
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RS Americas
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Farnell
from US$0.91
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Features
| 1.6A Typical Peak Input Current Limit |
| Up to 550 mA LED Load Current |
| Low Start-up Voltage: 0.65V (typical, 25 mA LED Current) |
| Low Operating Input Voltage: down to 0.5V |
| Maximum Input Voltage < VLED<5.0V |
| Maximum Output Voltage: 5.0V |
| Overvoltage Protection |
| Low Reference Voltage: VFB= 120 mV |
| Pulse-Width Modulation Mode Operation (1 MHz) |
| Internal Synchronous Rectifier |
| Internal Compensation |
| Inrush Current Limiting |
| Internal Soft-Start (240 µs typical) |
| Shutdown (EN = GND): True Load Disconnect |
| Dimming Control by Variable Duty Cycle |
| Shutdown Current: 1.2 µA (typical) |
| Overtemperature protection |
| Packages:MSOP-8, 2x3 DFN-8 |
Specifications
| Regulator Type | Step Up (Boost) |
|---|---|
| Switching Frequency (kHz) | 1000 |
| Input Voltage Range Min | 0.5 |
| Input Voltage Range Max | 5 |
| Output Current | 550 |
| Temp Range Min | -40 |
| Temp Range Max | 85 |
| Vout Min (V) | 0.6 |
| Vout Max (V) | 5 |
| Quiescent Current (mA) typ | 0.03 |
| Light Load Efficiency Mode | No |
| Switch current (A) typ | 1.8 |
| Automotive Qualified | Yes |
| SHUTDOWN Current (µA) (Typ) | 1.2 |
| Vfb (V) | 0.12 |
| Synchronous Rectifier | Yes |
| Duty Cycle Max (%) | 90 |
| Pins | Packaging | 8 | MSOP |
| Temp Range | -40C to +85C |
| Packing Media | Tube (100) |
Last 6 months Inventory & Pricing History
Resources
Data Sheets |
|---|
| MCP1643 Data Sheet |
Application Notes |
|---|
| AN2041 - Battery-Powered Constant Current LED Drivers |
| AN2082 - Using the MCP1643 Constant Current LED Driver for Low Start-Up Voltage Applications |
Environmental Information
| JEDEC Indicator | e3 |
|---|---|
| ROHS | Compliant |
| China EFUP | Compliant |
| Device Weight (g) | 0.0256 |
| Shipping Weight (kg) | 0.07 |
| Lead Count | 8 |
| Package Type | MSOP |
| Package Width or Size | 3x3mm |
| Soldering Composition | Matte Tin |
Alternative Descriptions
| SYNCHRONOUS BOOST CONVERTER | Microchip Technology |
| Microchip MCP1643-I/MS | RS |
| IC: driver | TME |
| Boost LED Constant Current Regulator, Io=<550mA, Vi>0.65V | ECOM |
| Led Driver, Pwm, 1Mhz, Msop-8 | Newark Electronics |
| 0.65V-5V INPUT LED DRIVER8 MSOP 3X3MM TUBE | RS Americas |
| IC, BOOST REG, PFM/PWM, 1MHZ, MSOP-8 | Farnell |
Frequently Asked Questions
Where can I find additional details, specifications and documents for a MCP1643-I/MS?
Additional datasheets, footprints and schematics for MCP1643-I/MS are listed on our Part Details page. You can also find images and similar parts to MCP1643-I/MS on this page.
What pricing and inventory information can I view?
Distributor pricing and stock information is available for MCP1643-I/MS on our Product Comparison page. Access via the 'View Pricing & Stock' button to view MCP1643-I/MS price breaks, MOQs, lead times, inventory and SKUs from distributors.
What category does MCP1643-I/MS fall under?
The MCP1643-I/MS is listed under LED Lighting Components > LED Driver ICs > DC / DC LED Driver ICs.
Can I view similar or alternative parts?
You can view similar parts to MCP1643-I/MS when available in the DC / DC LED Driver 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 MCP1643-I/MS you can contact the distributor directly for product support, shipping queries etc.
Is the MCP1643-I/MS RoHS compliant?
Yes. This part has been flagged as RoHS Compliant by Microchip Technology.
Which authorised distributors for MCP1643-I/MS have stock available?
Authorised distributors including Microchip Technology, RS, TME, ECOM and Newark Electronics have stock available or on a lead time for MCP1643-I/MS.
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