MCP73832T-2DFI/OT Microchip Integrated Circuit (SOT23 (5-Pin)) In Stock
The MCP73832T-2DFI/OT is a single-cell Li-Ion/Li-Polymer linear battery charger IC in a compact SOT-23-5 package. It provides 4.2V regulation with up to 500 mA charge current, programmable via an external resistor, and requires minimal external components.
- Manufacturer
- Microchip
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- MCP73832T-2DFI/OT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5400(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
- Single-cell Li-Ion/Li-Polymer charger with 4.2V regulated termination voltage
- Programmable charge current up to 500 mA via a single external resistor
- Tiny SOT-23-5 (5-pin) footprint ideal for space-constrained portable designs
- Integrated charge status output pin for LED or host microcontroller indication
- Thermal regulation automatically reduces current to prevent overheating during fast charge
Applications
The MCP73832T-2DFI/OT is well-suited for USB-powered portable devices such as wireless earbuds, fitness trackers, and handheld instruments that require compact, autonomous single-cell battery charging. Its programmable charge current via a single resistor simplifies design for applications ranging from small 100 mAh cells to larger 1000 mAh packs. The SOT-23-5 package and minimal external component count make it a preferred choice for IoT sensor nodes and wearable electronics where board space is premium.
Specifications
| Manufacturer Package Code | SOT-23-5 |
| Factory Lead Time | 6Weeks |
| YTEOL | 8 |
| Adjustable Threshold | YES |
| Analog IC - Other Type | LINEAR BATTERY CHARGER |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e3 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP5/6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Screening Level | TS 16949 |
| Supply Current-Max (Isup) | 1.5mA |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 3.75V |
| Supply Voltage-Nom (Vsup) | 5.2V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Threshold Voltage-Nom | +4.2V |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Package | SOT23 (5-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
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How is the charge current set on the MCP73832T-2DFI/OT, and what is the maximum programmable value?
The charge current is set by connecting a single resistor from the PROG pin to ground; a 2 kΩ resistor programs the maximum 500 mA charge current. Lower current values are obtained with higher resistance, allowing designers to match the charger to cells as small as 100 mAh without additional circuitry.
What is the regulated output voltage for the MCP73832T-2DFI/OT, and which battery chemistries does it target?
The MCP73832T-2DFI/OT regulates the charge termination voltage to 4.2V, precisely targeting single-cell Li-Ion and Li-Polymer batteries. This 4.2V regulation accuracy is typically within ±0.75%, which is within the safety margin required by standard lithium cell specifications.
For a wearable design with a 200 mAh Li-Poly cell, what PROG resistor value is appropriate for the MCP73832T-2DFI/OT?
A charge rate of C/2 (100 mA) suits a 200 mAh cell; using the PROG resistor formula, a 10 kΩ resistor sets approximately 100 mA. The SOT-23-5 package occupies only about 2.9 mm × 1.6 mm, making the complete charger circuit feasible in under 20 mm² of board area.
Does the MCP73832T-2DFI/OT include any thermal protection, and how does that affect charging?
Yes, the MCP73832T-2DFI/OT integrates thermal regulation that automatically reduces the charge current when the die temperature approaches 150°C. This prevents damage during high-ambient-temperature operation and eliminates the need for an external temperature-sense NTC thermistor in many designs.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.8300 | $0.83 |
| 10+ | $0.8000 | $8.00 |
| 25+ | $0.7500 | $18.75 |
| 100+ | $0.5600 | $56.00 |
| 1000+ | $0.5500 | $550.00 |
| 5000+ | $0.5400 | $2700.00 |
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