MCP1643-I/MC
Conv DC-DC 0.5V to 5V Synchronous Step Up Single-Out 0.6V to 5V 0.55A Automotive 8-Pin DFN EP Tube
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Manufacturer: Microchip Technology, Inc
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Mfr.Part #: MCP1643-I/MC
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Datasheet: MCP1643-I/MC Datasheet (PDF)
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Package/Case: DFN
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Product Type: Power Management ICs
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RoHS:
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Lifecycle: Active
Availability: 4478 pieces
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MCP1643-I/MC General Description
MCP1643 is a compact, high-efficiency, fixed frequency, synchronous step-up LED driver with constant current, that operates from one and two-cell alkaline and NiMH/NiCd batteries. The device can also drive two red/green/yellow series connection LEDs.

Key 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
Category | Integrated Circuits (ICs)Power Management (PMIC)LED Drivers | Mfr | Microchip Technology |
Series | - | Package | Tube |
Product Status | Active | Type | DC DC Regulator |
Topology | Step-Up (Boost) | Internal Switch(s) | Yes |
Number of Outputs | 1 | Voltage - Supply (Min) | 0.5V |
Voltage - Supply (Max) | 5V | Voltage - Output | 5V |
Current - Output / Channel | 550mA | Frequency | 1MHz |
Dimming | PWM | Applications | Backlight |
Operating Temperature | -40°C ~ 85°C (TA) | Mounting Type | Surface Mount |
Package / Case | 8-VFDFN Exposed Pad | Supplier Device Package | 8-DFN (2x3) |
Base Product Number | MCP1643 | Manufacturer | Microchip |
Product Category | Switching Voltage Regulators | RoHS | Details |
Output Voltage | 5 V | Output Current | 1.6 A |
Input Voltage, Max | 5 V | Mounting Style | SMD/SMT |
Switching Frequency | 1 MHz | Quiescent Current | 1.2 uA |
Minimum Operating Temperature | - 40 C | Maximum Operating Temperature | + 85 C |
Qualification | AEC-Q100 | Input Voltage, Min | 500 mV |
Brand | Microchip Technology | Product | Switching Regulators |
Product Type | Switching Voltage Regulators | Shutdown | Shutdown |
Factory Pack Quantity | 150 | Subcategory | PMIC - Power Management ICs |
Unit Weight | 0.001319 oz |
Shipping
Shipping Method
Our products are mainly transported and delivered by DHL, FedEx, UPS and other logistics partners on site -- Available to 200+ countries.
Delivery Time
The delivery time is usually within 2-7 days, depending on the logistics provider and the area of delivery.
The following are the estimated delivery times of some logistics service providers.
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DHL
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Fedex
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UPS
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EMS
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Registered Air Mail
Payment
We accept TT prepayment (bank transfer), paypal, credit cards, Western Union, Money Gram.
Checks and other instruments are not supported to pay for orders and customers are required to pay all possible fees, including sales tax,
customs fees, etc.
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Wire Transfer
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Paypal
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Credit Card
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Western Union
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Money Gram
Guarantees
Our policies and procedures are designed to ensure compliance with various quality specifications and to quickly resolve quality-related issues.We promise to provide 365 days quality assurance service for all our products.
If you have any dissatisfaction with the quality of the product you received, you can contact us for a refund or exchange, as long as the product is kept in its original condition.
Packing
AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.-
ESD
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Tape and Reel
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Cut Tape
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Tube or Tray
Buying Guide
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What is the lifespan of MCP1643-I/MC?
The lifespan of MCP1643-I/MC depends on various factors such as the quality of materials used, operating conditions, and the manufacturer's recommended usage time. The datasheet provided by the manufacturer specifies the expected lifespan of the product.
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Where can I find the full specification of MCP1643-I/MC?
You can find it with PDF Datasheet for MCP1643-I/MC on this page. If it is not available, you can contact Avaq at [email protected] to inquire about the Datasheet for this part.
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How to check the quality of MCP1643-I/MC?
Avaq has separate quality services with common quality inspection equipment for testing items, you can also fill out a sample form, our team will get in touch with you within 24 HOURS.
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Can I purchase samples for testing?
Avaq offers free samples for customers to test. This can often help you determine whether the chip or component meets your needs.
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Where can I check the delivery after the order is completed?
Once the order is completed, you will receive an order confirmation email containing a tracking number from AVAQ, then you can track the delivery by yourself.
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Where to view my order of MCP1643-I/MC or my history order record?
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Availability: 4478 pieces
Please fill in the short form below and we will provide you the quotation immediately.
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