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
LM34966QPWPRQ1 Converter Selection and Procurement Guide
Select LM34966QPWPRQ1 and compare four power-management paths using topology, compatibility, qualification, and procurement checks.
Oct 27, 2026
ERJ-2RKF49R9X Design Guide for PCB Validation
Validate a 49.9 ohm resistor position with power calculations, termination topology, thermal checks, and controlled PCB measurements.
Oct 27, 2026
LM34966QPWPRQ1 Design Guide for SEPIC Power Supplies
Design an LM34966QPWPRQ1 SEPIC supply with practical current, voltage, magnetic, thermal, and validation checks.
Oct 26, 2026
NSI50350AST3G Selection Guide: Package, Current and Procurement Fit
Select NSI50350AST3G and screen four NSI alternatives by current, package, thermal limits, compliance evidence, and traceable supply.
Oct 26, 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