MCP1631-E/SS Microchip Integrated Circuit (Small Outline Packages) In Stock
MCP1631-E/SS is a high-speed current-mode PWM switching controller operating from 3 V to 5.5 V input, offering integrated gate drive in a 20-pin SSOP package. It suits flexible power converter design with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- MCP1631-E/SS Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.2900(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- High-speed current-mode PWM control with integrated high-side gate drive for flexible converter topologies
- Wide input voltage range of 3 V to 5.5 V supporting single-cell and regulated-rail applications
- Compact 20-pin SSOP package enabling dense power controller integration on space-constrained PCBs
Applications
MCP1631-E/SS is designed for custom switching power supply designs where an MCU or DSC controls the PWM waveform while MCP1631 provides the high-speed gate drive. It is well suited for battery chargers, digitally controlled buck/boost converters, and LED drivers requiring current-mode control from a 3 V to 5.5 V logic supply. Its SSOP-20 footprint and 5 V nominal input make it easy to integrate alongside PIC microcontrollers in compact industrial and portable power management systems.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SSOP-20 |
| Factory Lead Time | 5Weeks |
| YTEOL | 9 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 3V |
| Input Voltage-Nom | 5V |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 0.25A |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SSOP20,.3 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Screening Level | TS 16949 |
| Surface Mount | YES |
| Switcher Configuration | SINGLE |
| Switching Frequency-Max | 2000kHz |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Philippines, Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What control mode does MCP1631-E/SS use and what input voltage does it require?
MCP1631-E/SS uses current-mode pulse-width modulation (PWM) control, which improves load transient response and simplifies loop compensation compared to voltage-mode designs. It operates from a 3 V minimum to 5.5 V maximum input voltage, making it compatible with 3.3 V and 5 V logic rails commonly found on microcontroller-based power management boards.
How does MCP1631-E/SS integrate with a PIC microcontroller in a digitally controlled power supply?
MCP1631-E/SS is architected so a PIC or dsPIC DSC generates the PWM duty cycle signal while MCP1631 handles the high-speed gate drive and current sensing. This split lets the microcontroller run adaptive algorithms—such as MPPT for solar chargers or dynamic voltage scaling—without requiring it to switch at the converter's frequency, which can exceed 1 MHz. The 20-pin SSOP package fits alongside a 14- to 28-pin PIC on the same board.
For a battery charger design, what advantages does the current-mode architecture of MCP1631-E/SS offer over voltage-mode controllers?
Current-mode control in MCP1631-E/SS provides inherent cycle-by-cycle peak current limiting, which protects battery cells and power MOSFETs from overcurrent conditions without a separate current-limit circuit. The inner current loop also provides faster load-transient response—typically settling in fewer than 10 switching cycles—compared to voltage-mode controllers, which is critical in chargers where load steps from 0 A to 2 A or more must not overshoot the 4.2 V lithium cell target.
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