MCP1624T-I/CHY Microchip Integrated Circuit (SOT23 (6-Pin)) In Stock
The MCP1624T-I/CHY is a boost voltage regulator by Microchip capable of starting from 0.35 V input, with PWM/PFM control and adjustable output from 2 V to 5.5 V in a compact SOT-23-6 package. It enables single-cell battery boost conversion for low-power IoT designs. Available from stock worldwide with competitive pricing.
- Manufacturer
- Microchip
- Package
- SOT23 (6-Pin)
- Pin Count
- 6
- Lifecycle
- ACTIVE
- Datasheet
- MCP1624T-I/CHY Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4364(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
- Ultra-low startup voltage from 0.35 V enabling single AA or AAA battery boost designs
- PWM and PFM control modes for high efficiency across light and heavy loads
- Adjustable output voltage from 2 V to 5.5 V for flexible supply rail generation
- Current-mode control architecture for fast transient response and loop stability
- Tiny SOT-23-6 package minimizing PCB space in portable and wearable devices
Applications
The MCP1624T-I/CHY is designed for single-cell or dual-cell battery boost converters in wireless sensor nodes, IoT devices, and portable medical equipment where input voltages as low as 0.35 V must be boosted to a stable 3.3 V or 5 V rail. Its PFM mode extends battery life significantly at light loads, making it ideal for energy-harvesting and low-duty-cycle applications. Consumer wearables, remote controls, and compact data loggers benefit from its SOT-23-6 footprint and wide adjustable output range.
Specifications
| Manufacturer Package Code | SOT-23-6 |
| YTEOL | 8 |
| Additional Feature | ALSO HAS CONTROL TECHNIQUE OF PFM, ALSO OPERATES IN ADJUSTABLE MODE FROM 2 TO 5.5V |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Min | 0.8V |
| Input Voltage-Nom | 1.2V |
| JESD-30 Code | R-PDSO-G6 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 0.05A |
| 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 |
| Qualification Status | Not Qualified |
| Screening Level | TS 16949 |
| Surface Mount | YES |
| Switcher Configuration | BOOST |
| Switching Frequency-Max | 630kHz |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| 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) |
| 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
How low can the input voltage be for MCP1624T-I/CHY to start up and regulate output?
The MCP1624T-I/CHY can start up from an input voltage as low as 0.35 V, with a typical operating input of 0.8 V to 1.2 V. This extremely low startup threshold allows it to operate from a nearly depleted single AA or AAA alkaline cell, extracting usable energy down to levels where most regulators would fail. Output voltages are adjustable from 2 V to 5.5 V during normal operation.
When does MCP1624T-I/CHY switch between PWM and PFM modes and how does this affect efficiency?
The MCP1624T-I/CHY automatically switches from PWM to PFM mode at light loads, typically below 10 mA output current, to minimize switching losses and quiescent current consumption. In PFM mode, efficiency is maximized by pulsing only when the output capacitor needs recharging, which can extend battery runtime by 20% to 40% in applications with intermittent duty cycles such as wireless sensor nodes sending data every few seconds.
For a 3.3 V wireless sensor node running from a single AA battery, how does MCP1624T-I/CHY compare to a direct LDO solution?
A direct LDO cannot boost voltage and fails as soon as the AA cell drops below 3.3 V, typically at 50% to 70% charge. The MCP1624T-I/CHY boosts the AA cell voltage (starting from 0.35 V) to a stable 3.3 V output with up to 80% efficiency, harvesting 3x more usable energy from each cell. This extends sensor node battery life from weeks to months in typical 5 mA average current applications.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.6000 | $0.60 |
| 3+ | $0.4364 | $1.31 |
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