MCP73844-840I/MS Microchip Integrated Circuit (Small Outline Packages) In Stock
The MCP73844-840I/MS is a single-cell Li-Ion charge controller with an 8.4 V regulation voltage targeting 2-cell series battery packs. It includes an adjustable threshold monitor and drives an external pass FET for flexible current control. Available in an MSOP-8 package with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP73844-840I/MS Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.2700(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
- 8.4 V precision charge termination voltage suits 2-cell series Li-Ion or Li-Polymer battery packs with tight tolerance
- Adjustable threshold monitor with single-channel architecture simplifies protection circuit design for portable chargers
- MSOP-8 package with RoHS-compliant lead-free construction minimizes board footprint in space-constrained charger designs
Applications
The MCP73844-840I/MS is designed for portable power tools, tablet chargers, and two-cell battery packs that require precise 8.4 V constant-voltage charging regulation. Its adjustable threshold allows designers to set pre-charge and top-off currents through an external pass transistor, giving flexibility for varying battery capacities from 500 mAh to several ampere-hours. The device also fits into consumer electronics charging docks and industrial handheld equipment where compact PCB area and accurate Li-Ion charge termination are essential.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | MSOP-8 |
| Reach Compliance Code | Compliant |
| Factory Lead Time | 5Weeks |
| YTEOL | 9 |
| Adjustable Threshold | YES |
| Analog IC - Other Type | BATTERY MONITOR |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP8,.19 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Screening Level | TS 16949 |
| Supply Current-Max (Isup) | 4mA |
| Supply Voltage-Max (Vsup) | 12V |
| Supply Voltage-Min (Vsup) | 8.7V |
| Supply Voltage-Nom (Vsup) | 9.4V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Threshold Voltage-Nom | +8.4V |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| ## MCP73844-840I/MS Alternates Showing results | Image |
| Package | Small Outline Packages |
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
Compatible alternatives and drop-in replacements for MCP73844-840I/MS:
suggested
Frequently Asked Questions
What is the charge termination voltage of MCP73844-840I/MS and which battery configurations does it target?
The MCP73844-840I/MS regulates to 8.4 V, which is the standard full-charge voltage for a 2-cell series Li-Ion or Li-Polymer pack (4.2 V per cell), making it directly applicable to portable power tools, dual-cell tablet batteries, and two-cell power bank designs without an external reference.
How does the adjustable threshold feature of MCP73844-840I/MS help designers set charge current?
The adjustable threshold input allows the designer to program pre-qualification and top-off charge current levels through an external resistor network and pass FET, accommodating battery packs ranging from 500 mAh to multi-Ah capacity within the same IC without changing the core charge controller.
In which package does MCP73844-840I/MS come and what board area does it occupy?
The MCP73844-840I/MS is supplied in an MSOP-8 package measuring approximately 3 mm x 3 mm, which is around 40% smaller than a standard SOIC-8, enabling integration into slim portable charger PCBs and compact battery management modules where every square millimeter matters.
For a portable drill charger requiring at least 1 A charge current, how should MCP73844-840I/MS be configured?
The MCP73844-840I/MS controls charge current through an external N-channel or P-channel pass transistor selected for at least 1 A continuous drain current and adequate thermal dissipation; the charge current is then set by the sense resistor and the IC's threshold, allowing total charge current above 1 A while keeping the 8-pin MSOP controller itself cool and within its operating temperature range of -40°C to 125°C.
Related Guides
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
ADAQ7768-1 Design Guide for Precision Vibration and Dynamic Signal Measurement
Design ADAQ7768-1 precision data acquisition channels for vibration and dynamic sensing with the right bandwidth, reference, clock, and layout choices.
Jun 30, 2026
AD5204BRZ10 Design Guide for SPI-Controlled Gain and Offset Calibration
Design AD5204BRZ10 digital potentiometer calibration loops with bounded trim span, safe wiper current, clean SPI routing, and reliable startup codes.
Jun 30, 2026
Why Buy from FindMyChip
About Microchip
Microchip is a leading electronic component manufacturer. FindMyChip sources Microchip ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.4800 | $1.48 |
| 25+ | $1.4000 | $35.00 |
| 100+ | $1.3400 | $134.00 |
| 1000+ | $1.2800 | $1280.00 |
| 5000+ | $1.2700 | $6350.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”