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Microchip Technology MCP73114T-1NSI/MF
- Part No.:
- MCP73114T-1NSI/MF
- Manufacturer:
- Microchip Technology
- Category:
- Battery Chargers
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
MCP73114T-1NSI/MF.pdf
- Description:
- IC BATT CONTRL LI-ION 1CEL 10DFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MCP73114T-1NSI/MF from Microchip Technology is a single-cell Li-Ion/Li-Polymer linear battery charge management controller with integrated pass transistor, current sense, input overvoltage protection (5.8 V), and reverse discharge protection. It delivers 4.20 V regulated charge voltage ±0.5% over –5°C to +55°C, supports 130–1100 mA resistor-programmable fast charge current, and operates across –40°C to +85°C ambient temperature - deployed in USB-powered portable media players and Bluetooth headsets.
For engineers reviewing the MCP73114T-1NSI/MF datasheet, MCP73114T-1NSI/MF pinout, MCP73114T-1NSI/MF application, or MCP73114T-1NSI/MF equivalent, key selection considerations include factory-preset 4.20 V regulation, 5.8 V OVP threshold (distinct from MCP73113's 6.5 V), 32-minute precondition timer, 10% precondition current ratio, and Type 1 status output (high-Z fault indication).
Technical Context
The MCP73114T-1NSI/MF implements a three-phase linear charging algorithm: preconditioning (10% of IREG at VBAT < 71.5% × VREG), constant-current fast charge (programmed via RPROG), and constant-voltage regulation (4.20 V). It integrates thermal regulation to dynamically reduce charge current above ~105°C and suspends charging entirely at 150°C die temperature with 10°C hysteresis.
Its input protection architecture includes undervoltage lockout (4.15 V start, 4.05 V stop), overvoltage protection (5.8 V start, 5.65 V stop), automatic power-down (VDD < VBAT + 50 mV), and battery short protection (1.7 V threshold, 25 mA recovery current). The PROG pin serves dual function: programming fast charge current and enabling/disabling charge via impedance detection (>200 kΩ disables operation).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Charge Voltage | 4.20 V ±0.5% over –5°C to +55°C - ensures precise Li-ion cell termination without overvoltage stress. |
| OVP Threshold | 5.8 V (start), 5.65 V (stop) - protects against low-cost wall adapters and plug/unplug spikes up to 18 V absolute max. |
| Fast Charge Current | 130–1100 mA, set by single RPROG (1–21 kΩ) - enables flexible design for 875 mAh battery in ~2.5 hr typical cycle. |
| Preconditioning | Enabled at VBAT < 71.5% × VREG, 10% IREG, 32-minute timer - safely recovers deeply depleted cells before full-rate charge. |
| End-of-Charge Control | 10% IREG minimum current ratio with 6-hour elapsed safety timer - prevents indefinite trickle and thermal runaway. |
| Thermal Regulation | Active current limiting above ~105°C; full thermal shutdown at 150°C (10°C hysteresis) - maintains reliability under high ambient or poor PCB heatsinking. |
| Status Output | Type 1 open-drain STAT: low during active charge phases, high-Z at shutdown/standby/charge-complete - compatible with LED or MCU GPIO. |
Pinout & Package
Package: 10-lead DFN (3 mm × 3 mm) with exposed thermal pad (EP) - optimized for space-constrained portable PCBs and requires PCB copper area + vias for thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pins 1,2) | Battery management input supply | Accepts 4.2–6.5 V operating input; 18 V absolute max; bypassed with ≥1 µF to VSS; triggers UVLO/OVP protection. |
| VBAT (Pins 3,4) | Battery charge control output | Drain of internal P-MOSFET; connects directly to battery anode; regulates voltage/current; requires ≥1 µF bypass. |
| NC (Pins 5,6) | No connect | Unbonded pins - must remain unconnected per datasheet; no routing or copper fill required. |
| STAT (Pin 7) | Status output | Open-drain logic output: low during precondition/fast-charge/CV; high-Z at shutdown/complete; drives LED or MCU interrupt. |
| VSS (Pins 8,9) | 0 V reference | Common ground for battery cathode, input supply return, and all internal circuitry - must be low-impedance star point. |
| PROG (Pin 10) | Current regulation & enable | Resistor-to-VSS sets IREG; floating or >200 kΩ disables charge; max 5 V input; 6 V absolute max rating. |
| EP (Pin 11) | Exposed thermal pad | Internally connected to VSS; must be soldered to PCB copper pour with ≥4 thermal vias for θJA = 64°C/W performance. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated pass transistor | 350 mΩ RDS(ON) at VDD = 4.5 V, TJ = 105°C - eliminates external MOSFET, reduces BOM count and layout area. |
| Input overvoltage protection | Factory-set 5.8 V OVP threshold with 150 mV hysteresis - prevents damage from AC-DC adapter surges without external TVS. |
| Reverse discharge protection | Internal blocking path - stops battery from powering VDD when input is absent, eliminating need for external diode. |
| Thermal regulation + shutdown | Gradual current reduction above 105°C, hard shutdown at 150°C - sustains safe operation under sustained high-power or poor ventilation. |
| Precondition timer & threshold | Fixed 32-minute timer and 71.5% VREG (≈3.00 V) precondition voltage - ensures controlled recovery of cells below 3.0 V without user configuration. |
| Automatic recharge | 95% VREG (≈4.00 V) threshold - restarts full charge when battery self-discharges post-completion, extending runtime between user interventions. |
Applications
| USB-Powered Portable Media Player | Bluetooth® Headset |
|---|---|
Use Scenario: Compact, battery-powered audio device charged via micro-USB port with variable wall adapter input (4.5–6 V). IC Role / Device Role / Timing Role: Linear charge controller managing CC/CV profile, OVP, thermal regulation, and STAT-driven LED status for end-user feedback. Use Value: Enables single-chip, no-external-FET solution meeting IEC 62368-1 safety requirements while supporting 4.20 V Li-Po chemistry with ±0.5% regulation accuracy. |
Use Scenario: Ultra-low-power wearable headset requiring reliable top-up charging from intermittent USB sources and minimal standby drain. IC Role / Device Role / Timing Role: Battery management unit providing reverse discharge protection, 0.5 µA shutdown current, and automatic recharge at 95% VREG. Use Value: Eliminates external diode and discrete enable logic, reducing quiescent current to <2 µA in shutdown and extending shelf life >12 months. |
| Digital Still Camera | MP3 Player |
Use Scenario: Intermittent-use imaging device with high peak current demands and need for rapid, safe recharging between sessions. IC Role / Device Role / Timing Role: Charge manager executing precondition → fast charge → CV → terminate sequence with 6-hour safety timer and 10% IREG cutoff. Use Value: Delivers full 875 mAh charge in ≤2.5 hours while preventing overcharge via ±0.5% voltage tolerance and thermal foldback. |
Use Scenario: Cost-sensitive consumer audio player with tight board space, requiring minimal external components and robust OVP for low-cost adapters. IC Role / Device Role / Timing Role: Integrated linear charger with 5.8 V OVP, 4.20 V regulation, and Type 1 STAT output driving dual-color LED indicator. Use Value: Reduces total solution size to <15 mm² and eliminates 3–4 passive components versus discrete charge IC + MOSFET designs. |
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 |
|---|---|---|---|
| MCP73114-0NS/MF | Same 4.20 V regulation, 5.8 V OVP, 10% precondition, 32-min timer, Type 1 STAT - identical electrical specs but different package marking and tape/reel configuration. | No functional difference; qualified for same applications including USB chargers and portable media. | Select MCP73114T-1NSI/MF for DFN-10 tape-and-reel delivery with IEC 61249-2-21 compliant finish; use MCP73114-0NS/MF for alternate packaging logistics. |
| BQ24075RGTR | 4.2 V regulation, but 6.0 V OVP; no factory-set precondition; uses external MOSFET; 20-pin QFN vs. 10-pin DFN; higher 1.5 A max charge current. | Requires external pass FET and more passives; suited for higher-current designs where thermal headroom allows discrete layout. | Choose BQ24075RGTR only if >1.1 A charge current or programmable OVP is required; MCP73114T-1NSI/MF offers lower component count and smaller footprint for ≤1.1 A. |
Compared with MCP73114-0NS/MF, the MCP73114T-1NSI/MF provides identical electrical performance in a functionally equivalent DFN package with traceable reel packaging, while BQ24075RGTR trades integration for higher current capability and external FET flexibility - making MCP73114T-1NSI/MF optimal for cost- and space-constrained 4.2 V Li-ion systems.
Availability
MCP73114T-1NSI/MF is available at Aetrix Electronics and suitable for USB chargers, Bluetooth headsets, and digital still cameras requiring stable component supply, long-lifecycle support, and RoHS-compliant DFN packaging.
Supply support for MCP73114T-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 devices, and battery management ICs, headquartered in Chandler, Arizona, with global manufacturing and support infrastructure.
The MCP73113/4 product line was designed specifically for cost-sensitive, space-constrained portable electronics requiring fully integrated, single-cell Li-ion linear charging with built-in safety protections and minimal external components.
FAQ
What is the factory-set charge voltage and OVP threshold for MCP73114T-1NSI/MF?
The MCP73114T-1NSI/MF is factory-configured for 4.20 V battery regulation voltage with ±0.5% tolerance over –5°C to +55°C, and 5.8 V overvoltage protection start threshold (5.65 V stop) - distinct from the MCP73113 series' 6.5 V OVP. These values are laser-trimmed and non-adjustable in-circuit.
How does the PROG pin function in MCP73114T-1NSI/MF beyond setting charge current?
In addition to programming fast charge current via RPROG-to-VSS, the PROG pin on MCP73114T-1NSI/MF acts as an enable/disable input: floating or connecting to >200 kΩ impedance places MCP73114T-1NSI/MF into shutdown mode with <5 µA supply current, while <10 kΩ enables normal operation - enabling simple hardware on/off control.
What is the role of the exposed thermal pad (EP) on MCP73114T-1NSI/MF, and how must it be implemented?
The EP pin on MCP73114T-1NSI/MF is internally tied to VSS and serves as the primary thermal conduction path. It must be soldered to a dedicated PCB copper pour connected via ≥4 thermal vias to inner-layer ground planes to achieve the specified θJA = 64°C/W - failure to do so risks thermal regulation activation or premature shutdown under load.
Does MCP73114T-1NSI/MF support automatic recharge, and what is its threshold?
Yes, MCP73114T-1NSI/MF supports automatic recharge at 95% of its factory-set VREG (i.e., 95% × 4.20 V = ≈4.00 V). When battery voltage drops below this threshold in Charge Complete mode, MCP73114T-1NSI/MF automatically restarts the full precondition → fast charge → CV sequence without external intervention.
What protection features are integrated into MCP73114T-1NSI/MF?
MCP73114T-1NSI/MF integrates five core protections: (1) input overvoltage (5.8 V), (2) undervoltage lockout (4.15 V start), (3) thermal regulation + shutdown (150°C), (4) battery short protection (1.7 V threshold, 25 mA recovery), and (5) reverse discharge blocking - eliminating need for 5+ discrete protection components in the BOM.
MCP73114T-1NSI/MF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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)
MCP73114T-1NSI/MF FAQ
1.How can I place an order for MCP73114T-1NSI/MF through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP73114T-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 MCP73114T-1NSI/MF reliable?
The price and inventory of MCP73114T-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 MCP73114T-1NSI/MF is usually 5 days.
3.What payment methods are accepted for MCP73114T-1NSI/MF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP73114T-1NSI/MF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP73114T-1NSI/MF?
MCP73114T-1NSI/MF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP73114T-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 MCP73114T-1NSI/MF?
For technical support, including MCP73114T-1NSI/MF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP73114T-1NSI/MF requirements.
6.How does Aetrix verify that MCP73114T-1NSI/MF is sourced from the original manufacturer or authorized distributors?
All MCP73114T-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 MCP73114T-1NSI/MF meets industry standards.
7.What is the process for return or replacement of MCP73114T-1NSI/MF?
All MCP73114T-1NSI/MF units undergo pre-shipment inspection (PSI). If there is an issue with MCP73114T-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 MCP73114T-1NSI/MF part is unused and in its original packaging.
Return procedure for MCP73114T-1NSI/MF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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