MCP1640T-I/CHY Microchip Integrated Circuit (SOT23 (6-Pin)) In Stock
The MCP1640T-I/CHY is a synchronous boost converter from Microchip operating from a 0.65V minimum input voltage with adjustable output from 2V to 5.5V and up to 95% efficiency. It uses current-mode PWM/PFM control and is housed in a compact SOT-23-6 package for space-constrained portable designs. Available worldwide with competitive pricing.
- Manufacturer
- Microchip
- Package
- SOT23 (6-Pin)
- Pin Count
- 6
- Lifecycle
- ACTIVE
- Datasheet
- MCP1640T-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
Key Features
- Input voltage range: 0.65V to 5.5V — operates from a single alkaline or NiMH cell
- Adjustable output voltage: 2V to 5.5V via external resistor divider
- Up to 95% efficiency with automatic PWM/PFM switching
- True output disconnect when disabled, drawing under 1 µA quiescent current in shutdown
- Soft-start limits inrush current during power-up
- Compact SOT-23-6 package (2.9 mm × 2.8 mm) for wearable and IoT designs
- Operating temperature: -40°C to +85°C
Applications
The MCP1640T-I/CHY is ideal for battery-powered IoT sensors, wearables, and wireless beacons that need to boost a single alkaline or NiMH cell (nominally 1.2V) up to a regulated 3.3V rail. Its ultra-low 0.65V start-up voltage allows the system to continue operating deep into battery discharge, extending useful device life. The true output disconnect feature and sub-1 µA shutdown current also make it well-suited for energy-harvesting applications where the input source is intermittent or near zero.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-23-6 |
| Factory Lead Time | 6Weeks |
| 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 |
| Package | SOT23 (6-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for MCP1640T-I/CHY:
Microchip Technology Inc PFM/PWM Enabled, Input to Output Bypass
Frequently Asked Questions
How low can the input voltage go before the MCP1640T-I/CHY stops operating?
The MCP1640T-I/CHY can start up and operate from an input voltage as low as 0.65V, which is near the end-of-discharge voltage for a single alkaline or NiMH cell. This allows battery-powered IoT devices to extract maximum energy from their cells before the system shuts down, extending operational lifetime by up to 20–30% compared to regulators with a 1.0V or higher minimum input.
What output voltage range can the MCP1640T-I/CHY regulate to, and how is it set?
The MCP1640T-I/CHY output voltage is adjustable from 2V to 5.5V using an external resistor divider connected to the feedback pin. A fixed 3.3V output requires only 2 resistors — for example, 1 MΩ and 634 kΩ — making it straightforward to set the output voltage for any standard logic rail. The device also supports a fixed-output version for even simpler designs where output trimming is not needed.
For an energy-harvesting sensor node, what is the shutdown current of the MCP1640T-I/CHY?
In shutdown mode (EN pin pulled low), the MCP1640T-I/CHY draws less than 1 µA quiescent current and provides true output disconnect, meaning the output rail collapses to near zero. For an energy-harvesting node running from a supercapacitor or small photovoltaic cell, this enables duty-cycled operation where the boost converter is disabled between measurement cycles, preserving harvested energy across the full input range of 0.65V to 5.5V.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.6450 | $0.65 |
| 3+ | $0.5741 | $1.72 |
| 1000+ | $0.5600 | $560.00 |
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