U641B-MFPY Microchip Integrated Circuit (Small Outline Packages) In Stock
The U641B-MFPY is a Microchip wiper and washer (WiWa) motor controller IC with integrated prewash delay sequencing logic, designed for automotive windshield wiper and washer system control in a small outline package. Available in stock with worldwide shipping for automotive body electronics designs.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of U641B-MFPY?
- Integrated wiper and washer (WiWa) control with prewash delay sequencing reduces external discrete component count for automotive wiper systems
- Designed for 12 V automotive electrical systems with dedicated motor drive outputs supporting wiper motor load currents
- Small outline package enables compact automotive body control module PCB layouts with minimal board area
- On-chip sequencing logic handles the delay interval between washer pump activation and wiper motor start, simplifying firmware complexity
What is U641B-MFPY used for?
The U641B-MFPY targets automotive windshield wiper and washer control applications in passenger vehicles and light commercial trucks. Its built-in prewash delay logic automatically sequences the washer pump activation ahead of wiper motor operation, replicating the standardized WiWa behavior required by OEM body control specifications. The small outline package integrates easily into body control modules alongside other automotive logic ICs operating from a 12 V vehicle battery supply.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
What are equivalent replacements for U641B-MFPY?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What specific automotive function does U641B-MFPY control, and what sequence does it automate?
U641B-MFPY controls the wiper and washer (WiWa) function in automotive windshield systems, automatically sequencing the washer pump activation with a prewash delay before engaging the wiper motor. This 2-step sequence, typically involving a 0.5 to 2 second washer-first delay, is a standard OEM requirement that the IC handles internally, eliminating the need for a microcontroller to manage the timing in software.
How does the prewash delay feature of U641B-MFPY simplify automotive body control module firmware?
By embedding the prewash delay sequencing logic on-chip, U641B-MFPY allows the body control module MCU to issue a single WiWa activation command and let the IC handle the timed washer-then-wiper sequence autonomously. This offloads real-time timing tasks from the host processor, freeing at least 1 software timer resource and reducing firmware complexity for the 12 V automotive control system.
In which automotive systems is U641B-MFPY typically deployed, and what vehicle supply voltage does it target?
U641B-MFPY is designed for 12 V automotive electrical systems found in passenger cars, SUVs, and light trucks requiring integrated windshield wiper and washer control. It is typically embedded in body control modules (BCMs) or dedicated wiper control units, where it drives the wiper motor relay or direct motor output alongside a washer pump, serving OEM assembly lines and aftermarket replacement board designs.
What package does U641B-MFPY use, and how does this affect PCB integration in a compact body control module?
U641B-MFPY is housed in a small outline (SO) surface-mount package with a pin pitch of 1.27 mm, which is standard for automotive SO-family ICs and compatible with automated SMT assembly lines. The small footprint allows the WiWa controller to be placed alongside other body control logic on a densely populated PCB without requiring through-hole clearances, supporting modern compact BCM form factors.
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