MCP1661T-E/MNY Microchip Integrated Circuit (Small Outline No-lead) In Stock
Microchip MCP1661T-E/MNY is a current-mode PWM non-synchronous boost switching regulator with 2.4 V to 5.5 V input range and up to 32 V output in an 8-pin TDFN package, designed for battery-powered LED drivers, white LED backlights, and portable power conversion applications.
- Manufacturer
- Microchip
- Package
- Small Outline No-lead
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP1661T-E/MNY Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5761(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
- Non-synchronous boost topology supporting output voltages up to 32 V from a 2.4 V to 5.5 V input
- Current-mode PWM control for fast transient response and inherent cycle-by-cycle current limiting
- Operates from 2.4 V minimum input enabling direct 3.7 V single-cell lithium battery operation
- 8-pin TDFN package with exposed pad for efficient thermal dissipation in compact designs
- Suitable for high-brightness LED string driving and portable power supply applications
Applications
MCP1661T-E/MNY is used in battery-operated devices requiring a regulated high-voltage output from a low-voltage cell, including white LED backlights for LCD panels, handheld instrument power rails, and portable medical device supplies. Its 2.4 V input capability and 32 V output range make it effective for driving series-connected LED strings in thin lighting modules powered by a single-cell lithium battery.
Specifications
| Manufacturer Package Code | TDFN-8 |
| Factory Lead Time | 7Weeks |
| YTEOL | 13 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 2.4V |
| Input Voltage-Nom | 3.3V |
| JESD-30 Code | R-PDSO-N8 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 0.2A |
| Output Voltage-Max | 32V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC8,.12,20 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Screening Level | TS 16949 |
| Surface Mount | YES |
| Switcher Configuration | BOOST |
| Switching Frequency-Max | 575kHz |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| 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 | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range does MCP1661T-E/MNY support, and can it operate from a single-cell lithium-ion battery?
MCP1661T-E/MNY accepts an input voltage from 2.4 V to 5.5 V, which covers the full discharge range of a single-cell lithium-ion battery (typically 3.0 V to 4.2 V). This allows portable devices to maintain a stable boosted output rail even as the battery voltage drops toward its 2.7 V cutoff, extending effective battery life.
How high an output voltage can MCP1661T-E/MNY produce, and what does that enable for LED string design?
MCP1661T-E/MNY can produce output voltages up to 32 V, which is sufficient to drive series strings of 6 to 8 white LEDs with a forward voltage of approximately 3.5 V each. This simplifies LED driver design by eliminating parallel current-sharing branches and improving efficiency in compact backlight modules.
What thermal advantages does the TDFN-8 package provide for MCP1661T-E/MNY in high-current LED driver applications?
The TDFN-8 package features an exposed thermal pad on the bottom that transfers heat directly to a PCB copper pour, significantly reducing junction-to-board thermal resistance compared to a standard SOIC-8. For LED driver applications where MCP1661T-E/MNY switches at high duty cycles, this thermal path helps maintain junction temperatures below 125°C maximum and ensures reliable long-term operation.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.2600 | $1.26 |
| 25+ | $1.0600 | $26.50 |
| 100+ | $0.9700 | $97.00 |
| 250+ | $0.5957 | $148.93 |
| 500+ | $0.5859 | $292.95 |
| 1000+ | $0.5761 | $576.10 |
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