MCP1640CT-I/CHY Microchip Integrated Circuit (SOT23 (6-Pin)) In Stock
The MCP1640CT-I/CHY is a synchronous boost DC-DC converter in a 6-pin SOT-23 package, operating from inputs as low as 0.65V and regulated outputs from 2V to 5.5V using current-mode PWM control. It is designed for single-cell battery and energy-harvesting applications requiring high efficiency at light loads.
- Manufacturer
- Microchip
- Package
- SOT23 (6-Pin)
- Pin Count
- 6
- Lifecycle
- ACTIVE
- Datasheet
- MCP1640CT-I/CHY Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5600(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP1640CT-I/CHY?
- Start-up from input voltages as low as 0.65V
- Adjustable output from 2V to 5.5V or fixed voltage option
- Current-mode PWM control for fast transient response
- True load disconnect prevents battery drain when disabled
- Compact 6-pin SOT-23 package minimizes board footprint
- PFM mode extends light-load efficiency for battery life optimization
What is MCP1640CT-I/CHY used for?
The MCP1640CT-I/CHY is well suited for single-cell alkaline, NiMH, or lithium battery-powered devices such as wireless sensors, wearable electronics, and portable medical instruments. Its ability to start up from as little as 0.65V allows full energy extraction from nearly depleted cells, extending product run time. The device is also used in energy-harvesting nodes where available input voltage fluctuates widely and efficient boost conversion is essential.
What are the specifications of MCP1640CT-I/CHY?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-23-6 |
| YTEOL | 7 |
| Additional Feature | ALSO OPERATES IN ADJUSTABLE MODE FROM 2V TO 5.5V; PFM CONTROL TECHNIQUE |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Nom | 1.2V |
| JESD-30 Code | R-PDSO-G6 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Voltage-Max | 5.5V |
| Output Voltage-Min | 2V |
| Output Voltage-Nom | 3.3V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BOOST |
| Switching Frequency-Max | 575kHz |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| ## MCP1640CT-I/CHY Alternates Showing results | Image |
| Package | SOT23 (6-Pin) |
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 |
Where can I find the MCP1640CT-I/CHY datasheet?
MCP1640CT-I/CHY Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP1640CT-I/CHY?
Compatible alternatives and drop-in replacements for MCP1640CT-I/CHY:
Microchip Technology Inc PFM/PWM Enabled, Input to Output Bypass
suggested
suggested
suggested
Frequently Asked Questions
How low can the MCP1640CT-I/CHY input voltage be at startup, and why does that matter for battery designs?
The MCP1640CT-I/CHY can start up from inputs as low as 0.65V, allowing the circuit to boot and operate even when a single NiMH or alkaline cell is nearly depleted. This extends effective battery life in wireless sensors and IoT nodes by several hours compared to regulators that require 0.9V or higher to start.
What output voltage range can the MCP1640CT-I/CHY regulate to in adjustable mode?
In adjustable mode, the MCP1640CT-I/CHY regulates its output from 2V to 5.5V using an external resistor divider, while the typical nominal input is 1.2V from a single cell. This wide 2V to 5.5V output range covers 3.3V and 5V logic rails commonly found in microcontrollers and wireless modules.
For a compact wearable design, how small is the MCP1640CT-I/CHY footprint on the PCB?
The MCP1640CT-I/CHY is housed in a 6-pin SOT-23 package, one of the smallest surface-mount outlines available, measuring approximately 2.9×1.6 mm. This tiny footprint, combined with only a few external passive components including an inductor and capacitors, makes it ideal for space-constrained wearable and portable designs.
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| 3+ | $0.5741 | $1.72 |
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