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
What are the key features of MCP73844-840I/MS?
- 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
What is MCP73844-840I/MS used for?
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.
What are the specifications of MCP73844-840I/MS?
| 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 |
Where can I find the MCP73844-840I/MS datasheet?
MCP73844-840I/MS Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP73844-840I/MS?
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
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 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.
More from Microchip
| 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.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit