MCP16331T-E/CH Microchip Integrated Circuit (SOT23 (6-Pin)) In Stock
The MCP16331T-E/CH is a step-down (buck) switching regulator from Microchip supporting 4.4 V to 50 V input and 1.2 A output current with an adjustable output voltage as low as 2 V. Using current-mode PWM control, it delivers high-efficiency power conversion in a compact 6-pin SOT-23 package for space-constrained applications.
- Manufacturer
- Microchip
- Package
- SOT23 (6-Pin)
- Pin Count
- 6
- Lifecycle
- ACTIVE
- Datasheet
- MCP16331T-E/CH Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.0326(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
- Wide input voltage range of 4.4 V to 50 V covering industrial 24 V and automotive 48 V bus inputs
- 1.2 A continuous output current with adjustable output voltage starting from 2 V
- Current-mode PWM control for inherent cycle-by-cycle current limiting and fast transient response
- Compact 6-pin SOT-23 package enabling minimal-footprint power conversion on space-constrained PCBs
- Step-down topology with high conversion efficiency across wide input-to-output ratios
- Nominal 12 V input design point with industrial-grade input protection up to 50 V
Applications
The MCP16331T-E/CH is well suited for industrial equipment, building automation, and automotive-adjacent designs powered from unregulated 12 V, 24 V, or 48 V bus rails that need a regulated low-voltage output for microcontrollers or sensors. Its wide input range and tiny SOT-23-6 footprint also make it a popular choice for distributed point-of-load regulators in PLC modules, field transmitters, and compact IoT sensor nodes.
Specifications
| Manufacturer Package Code | SOT-23-6 |
| Factory Lead Time | 19Weeks |
| YTEOL | 13 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 50V |
| Input Voltage-Min | 4.4V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-PDSO-G6 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 0.8A |
| Output Voltage-Max | 24V |
| Output Voltage-Min | 2V |
| Output Voltage-Nom | 3.3V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP6,.1,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Screening Level | TS 16949 |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 550kHz |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Package | SOT23 (6-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range does MCP16331T-E/CH support and can it be used on a 48 V industrial bus?
MCP16331T-E/CH accepts input voltages from 4.4 V to 50 V, making it compatible with 12 V, 24 V, and 48 V industrial bus rails; at 48 V input it comfortably stays within the 50 V maximum, allowing direct regulation down to low-voltage outputs of 2 V or above for microcontroller or sensor supplies.
How does the current-mode PWM control of MCP16331T-E/CH improve transient response in dynamic load applications?
Current-mode control senses inductor current cycle-by-cycle, allowing the MCP16331T-E/CH to respond to load steps within a single switching cycle; this tightens output voltage regulation during sudden load changes compared to voltage-mode topologies, with inherent cycle-by-cycle current limiting protecting against inductor saturation at loads up to 1.2 A.
What is the minimum achievable output voltage and what resistor network sets the output for a 3.3 V rail?
The adjustable output can be set as low as 2 V using a resistor divider from output to the FB pin; for a 3.3 V output, a standard two-resistor divider with 1% tolerance resistors is sufficient to set the regulated voltage with less than 1% steady-state error under 1.2 A load current.
What lead time and supply risk should procurement planners consider for MCP16331T-E/CH?
Factory lead time is approximately 19 weeks, which is longer than many standard regulators; buyers should plan inventory buffers of at least 20 weeks and consider qualifying nearby MCP16331 variants or alternative step-down regulators in a SOT-23-6 footprint to mitigate supply disruptions for 24 V industrial designs.
Does the SOT-23-6 package of MCP16331T-E/CH simplify PCB layout for high-voltage buck converter designs?
Yes, the 6-pin SOT-23 package with approximately 1.9 mm x 2.9 mm body keeps the switching node and power loop area small, reducing radiated EMI; designers should place the input capacitor and bootstrap components within 2 mm of the device pins to maintain clean switching waveforms at the 1.2 A output current level.
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