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Microchip Technology MCP73223-C2SI/MF
- Part No.:
- MCP73223-C2SI/MF
- Manufacturer:
- Microchip Technology
- Category:
- Battery Chargers
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
MCP73223-C2SI/MF.pdf
- Description:
- IC BAT CNTL IRON PHOS 1-2C 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,201
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Product details
Overview
MCP73223-C2SI/MF from Microchip Technology is a highly integrated linear lithium iron phosphate (LiFePO₄) battery charge management controller with integrated pass transistor, current sense, reverse discharge protection, and input overvoltage protection (OVP). It delivers 7.2V regulated charge voltage ±0.6% over –5°C to +55°C, supports 130–1100 mA resistor-programmable fast charge current, and operates across –40°C to +85°C ambient. It is designed for compact, cost-sensitive LiFePO₄ charging in power tools and backup energy storage.
For engineers reviewing the MCP73223-C2SI/MF datasheet, MCP73223-C2SI/MF pinout, MCP73223-C2SI/MF application, or MCP73223-C2SI/MF equivalent, key selection considerations include its 13V OVP threshold, factory-preset 7.2V charge voltage, 4V preconditioning threshold, 32-minute precondition timer, and DFN-10 (3 mm × 3 mm) thermal-pad package - all critical for safe, space-constrained LiFePO₄ charging designs.
Technical Context
The MCP73223-C2SI/MF implements a three-phase LiFePO₄-optimized charge algorithm: preconditioning (10% of IREG at VPTH = 4.0 V), constant-current fast charge (programmable 130–1100 mA), and constant-voltage regulation (7.20 V ±0.6%). It integrates thermal regulation (150°C shutdown with 10°C hysteresis) and automatic power-down when VDD falls within +50 mV of VBAT.
Its internal P-channel MOSFET pass transistor (RDS(ON) = 350 mΩ @ 105°C) enables direct linear regulation without external switching components. The PROG pin serves dual roles: programming fast charge current via 1–10 kΩ resistor and enabling/disabling charge via high-impedance (>200 kΩ) detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Charge Voltage | 7.20 V ±0.6% over –5°C to +55°C - ensures precise LiFePO₄ cell balancing and prevents overcharge degradation |
| OVP Threshold | 12.8–13.2 V - protects against AC adapter spikes and harsh input transients up to 18 V absolute max |
| Fast Charge Current | 130–1100 mA, set by 1–10 kΩ PROG-to-VSS resistor - enables flexible current scaling without redesign |
| Precondition Threshold | 4.0 V (factory preset) - initiates safe trickle charge for deeply depleted LiFePO₄ cells before fast charge |
| End-of-Charge Ratio | Selectable 5%, 7.5%, 10%, or 20% of IREG - balances full capacity recovery vs. cycle life extension |
| Operating Temp | –40°C to +85°C ambient - supports industrial and portable tool environments |
| Package | DFN-10 (3 mm × 3 mm) with exposed thermal pad - enables high-power dissipation in ultra-compact layouts |
Pinout & Package
Package: DFN-10 (3 mm × 3 mm) with exposed thermal pad (EP); EP must be connected to PCB ground plane via multiple vias for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pins 1,2) | Battery management input supply | Accepts 4.2–13.0 V input; 18 V absolute max; powers internal circuitry and gate drive; requires ≥1 µF bypass to VSS |
| VBAT (Pins 3,4) | Battery charge control output | Drain of internal P-MOSFET; connects directly to LiFePO₄ battery positive; requires ≥1 µF bypass for stability |
| NC (Pins 5,6) | No connection | Unbonded pins; must remain unconnected on PCB |
| STAT (Pin 7) | Status output | Open-drain indicator; sinks up to 35 mA; used for LED status or microcontroller polling (Type 1: On/Off) |
| VSS (Pins 8,9) | Battery reference ground | Common return for battery negative, input supply negative, and bypass capacitors |
| PROG (Pin 10) | Current regulation & enable | Resistor-programmed fast charge current; floating or >200 kΩ disables charger; also functions as enable input |
| EP (Pin 11) | Exposed thermal pad | Must be soldered to PCB ground copper area with ≥4 thermal vias to maintain TJ ≤ 125°C under full load |
Key Features
| Feature | Design Value |
|---|---|
| Integrated pass transistor | 350 mΩ RDS(ON) @ 105°C eliminates need for external MOSFET and reduces BOM count |
| Input overvoltage protection | 13 V OVP threshold with 150 mV hysteresis prevents damage from low-cost AC adapters and plug-in spikes |
| Factory-preset LiFePO₄ algorithm | 7.2 V regulation, 4.0 V precondition threshold, 32-min precondition timer - removes firmware dependency and simplifies certification |
| Reverse discharge protection | Blocks battery-to-input current flow during standby - eliminates need for external blocking diode |
| Thermal regulation & shutdown | Continuous current reduction above ~110°C and hard shutdown at 150°C with 10°C hysteresis - ensures reliability in enclosed enclosures |
Applications
| Power Tools | Backup Energy Storage |
|---|---|
Use Scenario: Cordless drills, impact drivers, and saws using 2-cell (7.2 V) LiFePO₄ packs requiring rapid, safe recharge between shifts. IC Role / Device Role / Timing Role: Primary linear charge controller managing full CC/CV profile, OVP, thermal foldback, and end-of-charge termination. Use Value: Enables compact, fanless charger design with no external MOSFET or sense resistor - reducing bill-of-materials and board area by >30%. | Use Scenario: Uninterruptible power supplies (UPS) and solar home systems storing energy in 2S LiFePO₄ batteries for off-grid lighting or telecom backup. IC Role / Device Role / Timing Role: Standalone charge manager providing automatic recharge at 95% VREG, deep-discharge preconditioning, and safety timers. Use Value: Guarantees long-term cycle life (>2000 cycles) through precise 7.20 V ±0.6% regulation and avoids premature failure from overvoltage or thermal stress. |
| Toys | Low-Cost LiFePO₄ Chargers |
Use Scenario: Ride-on electric toys and RC vehicles using sealed 2S LiFePO₄ batteries charged via wall adapters with variable output quality. IC Role / Device Role / Timing Role: Robust charge supervisor handling input ripple, voltage spikes, and intermittent loads during charging. Use Value: Built-in 18 V absolute max rating and 13 V OVP prevent field failures from low-cost AC-DC adapters - improving product return rate. | Use Scenario: OEM battery chargers for medical devices, portable instrumentation, and IoT sensors where size, cost, and safety certification are critical. IC Role / Device Role / Timing Role: Fully integrated charge IC eliminating discrete regulators, comparators, and timers required in legacy designs. Use Value: Reduces design time by >6 weeks versus discrete solutions and meets IEC 62368-1 requirements out-of-the-box with no additional safety components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LiFePO₄ battery charge management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP73223-C2A/MF | Same 7.2 V charge voltage, 13 V OVP, and 4 V precondition threshold, but automatic recharge disabled (0% VRTH/VREG) | Suitable for applications requiring single-charge-only behavior (e.g., disposable medical devices) | Select when battery must not self-recharge after partial discharge - avoids unintended cycling in storage |
| BQ25611DRTWR | Switch-mode buck charger (not linear); supports 7.2–8.4 V output; requires external inductor and MOSFETs; higher efficiency but larger solution size | Preferred for >1 A applications or thermally constrained designs where >85% efficiency is mandatory | Choose only if thermal budget prohibits linear operation - adds complexity but improves runtime per charge |
Compared with MCP73223-C2A/MF, the MCP73223-C2SI/MF provides automatic recharge at 95% VREG, enhancing usability in consumer tools; compared with BQ25611DRTWR, it offers smaller footprint and lower EMI but trades off efficiency for simplicity in sub-1 A applications.
Availability
MCP73223-C2SI/MF is available at Aetrix Electronics and suitable for power tools, backup energy storage, and toy applications requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for MCP73223-C2SI/MF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology Inc. is a leading provider of microcontrollers, analog, FPGA, and mixed-signal semiconductors, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The MCP73xx family is specifically engineered for cost-sensitive, space-constrained LiFePO₄ battery charging - delivering factory-tuned algorithms, integrated protection, and DFN packaging to eliminate external components and accelerate time-to-market.
FAQ
What is the exact charge voltage and tolerance of the MCP73223-C2SI/MF?
The MCP73223-C2SI/MF provides a factory-preset regulated charge voltage of 7.20 V with a tolerance of ±0.6% over the temperature range of –5°C to +55°C. This value is specified in the Electrical Characteristics table (DS22191E, page 4) and ensures optimal LiFePO₄ cell health and capacity retention without requiring external voltage-setting components.
Does the MCP73223-C2SI/MF support automatic recharge, and at what threshold?
Yes, the MCP73223-C2SI/MF supports automatic recharge at a factory-set threshold of 95% of VREG (i.e., 6.84 V for 7.20 V nominal). When battery voltage drops below this level in Charge Complete mode, the device initiates a new charge cycle. This behavior is confirmed in Table 2 (Standard Sample Options) and Section 5.8 of the datasheet.
What is the function of the PROG pin on the MCP73223-C2SI/MF?
The PROG pin on the MCP73223-C2SI/MF serves two critical functions: (1) it sets the fast charge current via an external resistor (1–10 kΩ to VSS), yielding 130–1100 mA; and (2) it acts as an enable/disable input - floating or connecting to >200 kΩ places the MCP73223-C2SI/MF in shutdown mode. Both roles are documented in Section 3.6 and Figure 4-1 of DS22191E.
What package type and thermal requirements apply to the MCP73223-C2SI/MF?
The MCP73223-C2SI/MF uses a DFN-10 (3 mm × 3 mm) package with an exposed thermal pad (EP). The EP must be soldered to a PCB ground plane with ≥4 thermal vias to achieve θJA = 64°C/W. This is essential to maintain junction temperature ≤125°C under maximum load, as specified in the Thermal Package Resistances table (DS22191E, page 6).
How does the MCP73223-C2SI/MF handle overvoltage and thermal faults?
The MCP73223-C2SI/MF responds to overvoltage by entering shutdown mode when VDD exceeds 13.2 V (OVP start), with 150 mV hysteresis. For thermal faults, it begins current foldback above ~110°C and triggers hard shutdown at 150°C (TSD), resuming only after die cools by ~10°C. Both protections are active simultaneously and are verified in Sections 5.2, 5.9, and 5.10 of DS22191E.
MCP73223-C2SI/MF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Battery Chemistry:
- Lithium Iron Phosphate
- Number of Cells:
- 1 ~ 2
- Current - Charging:
- Constant - Programmable
- Programmable Features:
- Current, Timer
- Fault Protection:
- Over Temperature, Over Voltage, Reverse Current
- Charge Current - Max:
- 1.1A
- Battery Pack Voltage:
- 7.2V
- Voltage - Supply (Max):
- 16V
- Interface:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DFN (3x3)
MCP73223-C2SI/MF FAQ
1.How can I place an order for MCP73223-C2SI/MF through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP73223-C2SI/MF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MCP73223-C2SI/MF reliable?
The price and inventory of MCP73223-C2SI/MF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP73223-C2SI/MF is usually 5 days.
3.What payment methods are accepted for MCP73223-C2SI/MF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP73223-C2SI/MF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP73223-C2SI/MF?
MCP73223-C2SI/MF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP73223-C2SI/MF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MCP73223-C2SI/MF?
For technical support, including MCP73223-C2SI/MF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP73223-C2SI/MF requirements.
6.How does Aetrix verify that MCP73223-C2SI/MF is sourced from the original manufacturer or authorized distributors?
All MCP73223-C2SI/MF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MCP73223-C2SI/MF meets industry standards.
7.What is the process for return or replacement of MCP73223-C2SI/MF?
All MCP73223-C2SI/MF units undergo pre-shipment inspection (PSI). If there is an issue with MCP73223-C2SI/MF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MCP73223-C2SI/MF part is unused and in its original packaging.
Return procedure for MCP73223-C2SI/MF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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