MCP1642DT-ADJI/MC Microchip Integrated Circuit (Small Outline No-lead) In Stock
Microchip MCP1642DT-ADJI/MC is a 1 MHz current-mode PWM step-up DC/DC boost converter with adjustable output from 1.8 V to 5.5 V and up to 1.6 A switch current. It accepts an input range of 1.5 V to 3 V, making it ideal for single-cell Li-ion or alkaline battery-powered portable applications.
- Manufacturer
- Microchip
- Package
- Small Outline No-lead
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP1642DT-ADJI/MC Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Step-up boost converter with 1 MHz PWM switching frequency
- Adjustable output voltage: 1.8 V to 5.5 V
- Peak switch current up to 1.6 A for moderate-power loads
- Input voltage range: 1.5 V to 3 V for single-cell battery operation
- Current-mode control for fast transient response and inherent cycle-by-cycle current limiting
- Compact DFN-8 package for high-efficiency power conversion in small form factors
Applications
The MCP1642DT-ADJI/MC is designed for portable devices powered by single-cell lithium-ion or alkaline batteries where a regulated higher voltage rail is required. Typical applications include boosting 1.5 V–3 V battery voltage to 3.3 V or 5 V for microcontrollers, Bluetooth modules, small displays, and IoT sensor nodes that need reliable power from a deeply discharged cell.
Specifications
| Manufacturer Package Code | DFN-8 |
| Factory Lead Time | 7Weeks |
| YTEOL | 14 |
| Additional Feature | ADJ OUTPUT FROM 1.8V TO 5.5V |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 3V |
| Input Voltage-Min | 1.5V |
| JESD-30 Code | R-PDSO-N8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 0.8A |
| Output Voltage-Max | 5.5V |
| Output Voltage-Min | 1.8V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC8,.08,20 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Screening Level | TS 16949 |
| Surface Mount | YES |
| Switcher Configuration | BOOST |
| Switching Frequency-Max | 1150kHz |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Package | Small Outline No-lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Malaysia, Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
Can the MCP1642DT-ADJI/MC boost a single AAA battery at 1.5 V to a 3.3 V rail for a microcontroller?
Yes. The MCP1642DT-ADJI/MC accepts input voltages from 1.5 V to 3 V, so a single AAA or AA alkaline battery at 1.5 V is within the input range. With the adjustable output set to 3.3 V and a peak switch current up to 1.6 A, it can power a low-power microcontroller or Bluetooth module efficiently from a single-cell source.
What switching frequency does the MCP1642DT-ADJI/MC use and how does it affect inductor and capacitor selection?
The MCP1642DT-ADJI/MC operates at a fixed 1 MHz PWM switching frequency. Higher switching frequency allows smaller external inductors and output capacitors, typically in the 2.2 µH to 4.7 µH inductor range and ceramic capacitors in the 10 µF class, reducing overall solution size for portable and wearable applications.
How adjustable is the output voltage of the MCP1642DT-ADJI/MC and what external components set it?
The MCP1642DT-ADJI/MC output voltage is programmable from 1.8 V to 5.5 V using an external resistor divider connected to the feedback pin. This allows designers to configure the exact output rail needed, such as 3.3 V or 5 V, without sourcing a different fixed-voltage device, simplifying BOM management across product variants.
What is the package format of the MCP1642DT-ADJI/MC and what are the lead time expectations?
The MCP1642DT-ADJI/MC is available in an 8-pin DFN package (no-lead, JESD-30 code R-PDSO-N8), which provides a small PCB footprint with good thermal dissipation. The factory lead time is approximately 7 weeks from Microchip. The DFN-8 package is compatible with standard SMT reflow assembly processes used in consumer electronics production.
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