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Microchip Technology MCP73114-1NSI/MF
- Part No.:
- MCP73114-1NSI/MF
- Manufacturer:
- Microchip Technology
- Category:
- Battery Chargers
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
MCP73114-1NSI/MF.pdf
- Description:
- IC BATT CHG LI-ION 1CELL 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:149
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Product details
Overview
MCP73114-1NSI/MF from Microchip Technology is a single-cell Li-ion/Li-polymer linear battery charge management controller with integrated pass transistor, input overvoltage protection (5.8 V), and resistor-programmable fast charge current (130–1100 mA). It delivers ±0.5% voltage regulation at 4.20 V across –5°C to +55°C and supports automatic recharge at 95% VREG, thermal regulation, and 32-minute precondition timer - enabling compact, cost-sensitive USB-powered portable chargers.
For engineers reviewing the MCP73114-1NSI/MF datasheet, MCP73114-1NSI/MF pinout, MCP73114-1NSI/MF application, or MCP73114-1NSI/MF equivalent, this page provides verified functional specifications, DFN-10 package layout, real-world use cases in Bluetooth headsets and digital cameras, and two validated alternative parts with documented technical and application differences.
Technical Context
The MCP73114-1NSI/MF implements a full linear CC/CV charging algorithm with factory-preset 4.20 V regulation, 5.8 V input OVP, and 10% preconditioning current ratio. Its internal P-channel MOSFET (RDS(ON) = 350 mΩ) enables direct battery connection without external FETs, while thermal regulation dynamically reduces ICHG above ~105°C to maintain reliability under high ambient or power-dense conditions.
Charge control is managed via PROG pin impedance: floating or >200 kΩ disables charging; 1–21 kΩ sets IREG; and internal timers (32 min precondition, 6 hr elapsed) enforce safety limits. STAT provides open-drain status output compatible with LED indicators or microcontroller GPIO polling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Charge Voltage | 4.20 V ±0.5% over –5°C to +55°C - ensures safe, full-capacity charging of standard Li-ion cells without external feedback resistors. |
| Input OVP Threshold | 5.8 V (MCP73114-specific) - protects against wall adapter spikes and enables robust operation with low-cost AC-DC supplies. |
| Fast Charge Current Range | 130–1100 mA set by single RPROG (1–21 kΩ) - simplifies BOM and allows precise current tuning for battery capacity and thermal constraints. |
| Precondition Timer | 32 minutes - safely recovers deeply discharged cells (<66.5% VREG) before fast charge, preventing lithium plating. |
| Thermal Regulation | Active current limiting above ~105°C junction temperature - maintains charge progress while preventing die overheating in sealed enclosures. |
| UVLO Threshold | 4.15 V start / 4.05 V stop - prevents erratic startup during brown-out and ensures stable operation with weak or aging input sources. |
| Package | DFN-10 (3 mm × 3 mm) with exposed thermal pad - enables high-density PCB layouts and efficient heat dissipation in space-constrained portable designs. |
Pinout & Package
Package: 10-lead DFN (3 mm × 3 mm) with exposed thermal pad (EP) for enhanced thermal performance. Pin 1 marked by dot; EP must be soldered to PCB ground plane with ≥4 thermal vias.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pins 1,2) | Battery management input supply | Accepts 4.2–6.5 V input; 18 V absolute max with OVP; requires ≥1 µF bypass capacitor to VSS. |
| VBAT (Pins 3,4) | Battery charge control output | Drain of internal P-MOSFET; connects directly to battery anode; requires ≥1 µF bypass for stability. |
| NC (Pins 5,6) | No connect | Unbonded pins; must remain unconnected and unpopulated on PCB. |
| STAT (Pin 7) | Status output | Open-drain logic output (Type 1: high-Z/fault; low during active charge); drives LED or MCU interrupt. |
| VSS (Pins 8,9) | Ground reference | Common return for battery negative, input supply negative, and all internal circuitry. |
| PROG (Pin 10) | Current regulation & enable | Resistor-to-VSS sets IREG; floating or >200 kΩ disables charger - no external enable logic required. |
| EP (Pin 11) | Exposed thermal pad | Internally connected to VSS; must be soldered to large copper pour with thermal vias for thermal regulation compliance. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated pass transistor | Eliminates need for external P-FET and gate driver, reducing component count and PCB area in ultra-compact chargers. |
| Input overvoltage protection | 5.8 V threshold (MCP73114-specific) with 150 mV hysteresis - prevents damage from transient surges without external TVS diodes. |
| Factory-set 4.20 V regulation | ±0.5% accuracy over –5°C to +55°C - meets JEITA requirements for standard Li-ion cells without calibration. |
| Automatic recharge at 95% VREG | Enables maintenance charging without host MCU intervention - ideal for always-on portable devices like Bluetooth headsets. |
| Battery short protection | Detects VBAT < 1.7 V and applies 25 mA recovery current - prevents false charging attempts on damaged or shorted cells. |
Applications
| USB-Powered Portable Charger | Digital Still Camera |
|---|---|
|
Use Scenario: Compact, wall-adapter-powered charger for consumer-grade Li-ion battery packs in handheld accessories. IC Role / Device Role / Timing Role: Primary linear charge controller managing CC/CV profile, OVP, UVLO, and thermal foldback without MCU supervision. Use Value: Enables single-chip, zero-firmware charging solution with 4.20 V/1000 mA capability and 5.8 V OVP tolerance for unregulated USB adapters. |
Use Scenario: Integrated battery charging in battery-grip modules for DSLR/mirrorless cameras requiring reliable field recharging. IC Role / Device Role / Timing Role: Standalone charge manager handling precondition, fast charge, CV termination, and automatic recharge during intermittent usage. Use Value: Delivers ±0.5% voltage regulation and 32-minute precondition timer to safely restore depleted camera batteries after extended storage. |
| Bluetooth® Headset | MP3 Player |
|
Use Scenario: Space-constrained charging circuit inside earbud charging case with tight thermal envelope. IC Role / Device Role / Timing Role: Linear charger with thermal regulation and 95% VREG auto-recharge to sustain multi-day operation between full charges. Use Value: DFN-10 package and integrated MOSFET allow <8 mm² footprint; 350 mΩ RDS(ON) minimizes self-heating during 300–500 mA charging. |
Use Scenario: Low-cost, battery-backed media player requiring robust charging under variable ambient temperatures. IC Role / Device Role / Timing Role: Full-featured linear controller executing CC/CV, end-of-charge detection at 10% IREG, and 6-hour safety timer. Use Value: Factory-programmed 4.20 V regulation and ±0.5% tolerance ensure optimal cycle life and capacity retention across -40°C to +85°C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar linear Li-ion charge management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP73113-06S/MF | OVP = 6.5 V (vs. 5.8 V); same 4.20 V regulation, 10% precondition, 32-min timer, 95% auto-recharge. | Better suited for higher-input-voltage adapters (e.g., 9 V wall warts); less tolerant of 5 V USB source transients. | Select when system input may exceed 5.8 V but remains below 6.5 V; verify OVP margin against actual supply ripple. |
| BQ24075RGTR | 4.2 V regulation, 5.5 V OVP, 1.5 A max ICHG, integrated LDO, different pinout (QFN-16), no precondition timer. | Supports higher current and dual-path power routing; lacks preconditioning and fixed 32-min timer - requires external configuration. | Choose for designs needing >1.1 A charge current or simultaneous system load + battery charging; accept added complexity for flexibility. |
Compared with MCP73113-06S/MF, MCP73114-1NSI/MF offers tighter OVP for USB-native systems, while BQ24075RGTR trades integrated simplicity for higher current and configurability - making MCP73114-1NSI/MF optimal for cost- and space-sensitive 4.2 V, ≤1.1 A applications with strict transient immunity needs.
Availability
MCP73114-1NSI/MF is available at Aetrix Electronics and suitable for USB chargers, Bluetooth headsets, digital still cameras, and MP3 players requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for MCP73114-1NSI/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 components, and battery management ICs, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The MCP73113/4 product line was designed specifically for cost-sensitive, space-constrained Li-ion charging in portable consumer electronics - integrating OVP, thermal regulation, and factory-set voltage options to eliminate external components and firmware dependencies.
FAQ
What is the exact input overvoltage protection threshold for MCP73114-1NSI/MF?
The MCP73114-1NSI/MF has a fixed input overvoltage protection (OVP) threshold of 5.8 V, with 150 mV hysteresis. This value is specific to the MCP73114 variant and differs from the 6.5 V OVP of the MCP73113 family. The OVP circuit disables charging when VDD exceeds 5.8 V and resumes only after VDD falls below 5.65 V, protecting the device and battery from transient surges common in low-cost AC-DC adapters.
How is the fast charge current programmed on MCP73114-1NSI/MF?
The fast charge current for MCP73114-1NSI/MF is set using a single external resistor (RPROG) connected between the PROG pin and VSS. The relationship follows IREG = 1104 / RPROG0.93, supporting 130–1100 mA across 1–21 kΩ. For example, a 2.0 kΩ resistor yields ~800 mA. The PROG pin also serves as an enable input: floating or >200 kΩ disables the charger entirely.
Does MCP73114-1NSI/MF support automatic recharge, and at what threshold?
Yes, MCP73114-1NSI/MF supports automatic recharge at 95% of its factory-set regulated voltage (4.20 V), i.e., 4.0 V nominal. When the battery voltage drops below this threshold in Charge Complete mode, the device initiates a new charge cycle without external intervention - a key feature for always-on portable devices like Bluetooth headsets and media players.
What is the function of the STAT pin on MCP73114-1NSI/MF?
The STAT pin on MCP73114-1NSI/MF is an open-drain status output that indicates charge state: low during Preconditioning, Fast Charge, and Constant Voltage modes; high-impedance during Shutdown, Standby, and Charge Complete. It is configured as Type 1 (high-Z fault indication) per datasheet Table 2 and can drive an LED directly or interface with a microcontroller GPIO for system-level charge monitoring.
What thermal protection mechanisms does MCP73114-1NSI/MF implement?
MCP73114-1NSI/MF implements two-tier thermal protection: (1) Thermal regulation - gradually reduces charge current above ~105°C junction temperature to maintain safe operation; and (2) Thermal shutdown - suspends all charging if die temperature exceeds 150°C, resuming only after cooling by ~10°C. Both functions are fully internal and require no external components or configuration.
MCP73114-1NSI/MF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Battery Chemistry:
- Lithium Ion/Polymer
- Number of Cells:
- 1
- Current - Charging:
- Constant - Programmable
- Programmable Features:
- -
- Fault Protection:
- Over Voltage
- Charge Current - Max:
- 1.1A
- Battery Pack Voltage:
- 4.1V
- Voltage - Supply (Max):
- 6.5V
- Interface:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DFN (3x3)
MCP73114-1NSI/MF FAQ
1.How can I place an order for MCP73114-1NSI/MF through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP73114-1NSI/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 MCP73114-1NSI/MF reliable?
The price and inventory of MCP73114-1NSI/MF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP73114-1NSI/MF is usually 5 days.
3.What payment methods are accepted for MCP73114-1NSI/MF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP73114-1NSI/MF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP73114-1NSI/MF?
MCP73114-1NSI/MF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP73114-1NSI/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 MCP73114-1NSI/MF?
For technical support, including MCP73114-1NSI/MF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP73114-1NSI/MF requirements.
6.How does Aetrix verify that MCP73114-1NSI/MF is sourced from the original manufacturer or authorized distributors?
All MCP73114-1NSI/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 MCP73114-1NSI/MF meets industry standards.
7.What is the process for return or replacement of MCP73114-1NSI/MF?
All MCP73114-1NSI/MF units undergo pre-shipment inspection (PSI). If there is an issue with MCP73114-1NSI/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 MCP73114-1NSI/MF part is unused and in its original packaging.
Return procedure for MCP73114-1NSI/MF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MCP73114-1NSI/MF Tags
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BQ21040DBVR
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