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Monolithic Power Systems Inc. MP2611GL-Z
- Part No.:
- MP2611GL-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Battery Chargers
- Package:
- 14-VFDFN Exposed Pad
- Datasheet:
-
MP2611GL-Z.pdf
- Description:
- IC BATT CHG LI-ION 1CELL 14QFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MP2611GL-Z from Monolithic Power Systems is a monolithic 2A switching battery charger IC for single-cell Li-Ion batteries, integrating high-side P-Channel and low-side N-Channel MOSFETs. It supports dual-input operation (4.5–6V AC adapter or USB), delivers ±0.5% battery voltage regulation, enables 100% duty-cycle operation near input-output voltage crossover, and includes NTC-based temperature monitoring and programmable safety timer - deployed in portable media players requiring compact, thermally robust charging.
For engineers reviewing the MP2611GL-Z datasheet, MP2611GL-Z pinout, MP2611GL-Z application, or MP2611GL-Z equivalent, this page provides verified technical context, validated pin functions, real-world charge profile behavior, confirmed thermal shutdown threshold (150°C), and documented USB/AC input current limit programming via RILIM - all critical for USB3.0-compliant portable power design and BOM validation.
Technical Context
The MP2611GL-Z implements a synchronous buck topology with integrated high-side PFET (130 mΩ RDS(ON)) and low-side NFET (200 mΩ RDS(ON)), enabling up to 2A charge current and 100% duty cycle when VIN ≈ VBATT. Its dual-input architecture uses independent UVLO thresholds (3.75V) on ACIN and USBIN pins, with automatic priority given to ACIN when both inputs are present.
Two closed-loop control paths govern operation: a current-sense amplifier (A3) referenced to CSP–BATT monitors charge current via RS1, while a voltage error amplifier (GMV) regulates VBATT to 4.2V ±0.5%. STAT1/STAT2 open-drain outputs encode five discrete states-including charging, end-of-charge, thermal fault, and input absent-via logic combinations pulled to VREF33.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Charge Current | Up to 2A programmable via RS1 sense resistor; enables fast full-charge in ≤3 hours for 2000mAh cells. |
| Battery Voltage Accuracy | ±0.5% at 4.2V; ensures safe Li-Ion termination without overvoltage stress or premature cutoff. |
| Input Voltage Range | 4.5V to 6V for both ACIN and USBIN; compatible with standard 5V USB ports and 5V/9V wall adapters. |
| USB Input Current Limit | Programmable to 500mA or 900mA via RILIM on USBM pin; satisfies USB2.0 and USB3.0 host port compliance. |
| Switching Frequency | 1.5MHz fixed; allows use of small 2.2µH inductors and reduces EMI filtering burden. |
| Thermal Shutdown Threshold | 150°C junction temperature; halts switching until die cools to 130°C, preventing permanent damage. |
| NTC Monitoring | Dual-threshold window comparator (32% and 74% of 3.3V VREF33); detects out-of-range battery temperatures using NCP18XH103 thermistor. |
Pinout & Package
MP2611GL-Z is housed in a thermally enhanced 3mm × 4mm QFN-14 package with exposed thermal pad on underside. Pin numbering follows top-view layout with pin 1 at top-left corner (see MPS package drawing MP2611 Rev. 1.12, p.2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ACIN (Pin 1) | Primary DC input supply | Accepts 4.5–6V adapter input; triggers UVLO at 3.75V rising edge; takes priority over USBIN when both active. |
| PGND (Pin 2) | Power ground reference | Low-impedance return path for switching currents; must be routed outside SW-to-input loop to avoid noise coupling. |
| SW (Pin 3) | Switch node output | Drives external inductor; connects to drain of internal high-side PFET and source of low-side NFET. |
| USBIN (Pin 4) | Secondary DC input supply | Accepts 4.5–6V USB input; enables charge when ACIN <3.75V; current limited via USBM resistor network. |
| AGND (Pin 5) | Analog ground reference | Reference for VREF33, NTC, TMR, and USBM; must be star-connected to PGND at single point to minimize offset. |
| VREF33 (Pin 6) | Internal 3.3V LDO output | Stable 3.3V ±2% reference powering STAT pull-ups, NTC divider, and external circuitry; load regulated to 20mA. |
| USBM (Pin 7) | USB current limit set | Connects to AGND via RILIM (e.g., 45.3kΩ → 900mA); sets input current limit only in USB mode, not AC mode. |
| BATT (Pin 8) | Battery positive terminal | Direct connection to Li-Ion anode; senses battery voltage and enables reverse-blocking protection when inputs inactive. |
| CSP (Pin 9) | Current sense positive | High-side current sense input; forms differential pair with BATT across RS1 to measure charge current with 100mV full-scale. |
| EN (Pin 10) | Enable control input | Active-high logic: <0.8V = disable (shutdown current 0.2µA), >1.2V = enable; controls entire charger operation. |
| STAT1 / STAT2 (Pins 11–12) | Status indicator outputs | Open-drain NMOS outputs pulled to VREF33; encode 5 states (charging, done, fault, input absent) via logic combinations. |
| NTC (Pin 13) | Thermistor interface | Connects to NTC thermistor and VREF33 divider; monitors battery temperature via window comparator (0°C–50°C typical range). |
| TMR (Pin 14) | Safety timer capacitor | Connects to AGND via CTMR (e.g., 0.1µF → 3hr total charge time); disables timer when shorted to AGND. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated synchronous buck switches | Eliminates need for external Schottky diode; achieves >90% efficiency at 2A with 2.2µH inductor and 5V input. |
| Reverse-blocking protection | No external diode required; internal PFET blocks battery discharge into inactive ACIN/USBIN ports (min VIN–VBATT = 200mV). |
| Programmable USB current limit | Supports dual USB standards: 500mA (USB2.0) and 900mA (USB3.0) via single RILIM resistor on USBM pin. |
| Accurate CC/CV charge control | Two independent control loops maintain ±0.5% VBATT and ±3% ICHG across temperature and input voltage variation. |
| Auto-recharge and trickle charge | Reinitiates charge when VBATT drops below 4.0V after full-charge; starts at 10% ICC (200mA @ 2A setting) if VBATT <3V. |
Applications
| Smartphones | Portable Media Players |
|---|---|
Use Scenario: Compact handheld device with 1800–2500mAh Li-Ion battery and dual-power input (USB-C + wall adapter). IC Role / Device Role / Timing Role: Primary battery management IC performing CC/CV charge control, input source arbitration, and thermal safety monitoring. Use Value: Enables full charge in under 2.5 hours at 2A while maintaining ±0.5% voltage accuracy and automatic USB/AC handover without firmware intervention. |
Use Scenario: Battery-powered audio/video player with NTC-integrated battery pack and strict thermal limits. IC Role / Device Role / Timing Role: Standalone charging controller managing trickle→CC→CV profile, NTC window detection, and STAT-driven UI feedback. Use Value: Prevents charging outside 0°C–50°C via hardware-level NTC comparator, eliminating software dependency for thermal safety compliance. |
| Tablet Accessories | Wearable Health Monitors |
Use Scenario: Docking station or keyboard cover with embedded Li-Ion battery and shared USB data/power interface. IC Role / Device Role / Timing Role: Dual-input charger supporting simultaneous USB data negotiation and battery charging without bus contention. Use Value: USBM pin programming allows precise 500mA current limiting during USB2.0 enumeration, avoiding host port overcurrent faults. |
Use Scenario: Small-form-factor wearable with 300–600mAh battery, space-constrained PCB, and medical-grade thermal requirements. IC Role / Device Role / Timing Role: Highly integrated charging solution providing 100% duty-cycle operation at low VIN–VBATT delta and sub-1µA shutdown current. Use Value: 0.2µA EN-disable current extends shelf life; QFN14 (3×4mm) footprint fits tight layouts without sacrificing thermal performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-cell Li-Ion switching charger applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ24075RGTR | Linear charger (not switching); max 1.5A; no integrated FETs; requires external pass transistor. | Limited to low-power devices (<1000mAh); unsuitable for fast-charge or high-efficiency designs. | Select only when board space permits external FET and thermal dissipation is manageable at 1.5A. |
| TPS65023BRSBR | Multi-rail PMIC with 1.5A charger; includes DC/DC converters and LDOs; larger 40-pin QFN package. | Over-specified for standalone charging; adds complexity and cost where only charging function is needed. | Choose only when system requires integrated power sequencing and multiple regulated rails alongside charging. |
Compared with BQ24075RGTR and TPS65023BRSBR, MP2611GL-Z delivers higher 2A switching charge current in minimal 3×4mm area, eliminates external FETs and heat sinks, and provides dedicated USB/AC input arbitration - making it optimal for space-constrained, high-efficiency portable chargers where integration and thermal headroom are critical.
Availability
MP2611GL-Z is available at Aetrix Electronics and suitable for smartphones, portable media players, tablet accessories, and wearable health monitors requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for MP2611GL-Z 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
Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance analog and power ICs, with core expertise in DC/DC conversion, battery management, and motor control.
The MP2611 belongs to MPS's battery charging IC product line, designed specifically for compact, high-efficiency single-cell Li-Ion charging in USB-powered portable electronics - emphasizing integration, thermal resilience, and dual-input flexibility.
FAQ
What is the maximum continuous charge current supported by MP2611GL-Z?
The MP2611GL-Z supports up to 2A continuous charge current, programmable via the RS1 sense resistor (e.g., 50mΩ yields 2A). This value is validated across the full 4.5–6V input range and -40°C to +125°C junction temperature, with cycle-by-cycle overcurrent protection limiting peak current to 3.5A.
How does MP2611GL-Z handle simultaneous ACIN and USBIN connection?
MP2611GL-Z automatically prioritizes ACIN when both inputs are present: ACIN UVLO (3.75V) enables Q1, disabling Q2 and routing power exclusively through the AC path. The datasheet explicitly warns against sustained dual-input operation due to potential regulator instability and recommends physical isolation or sequencing control.
Can the safety timer be disabled, and how?
Yes, the internal safety timer can be fully disabled by connecting the TMR pin directly to AGND. When grounded, the timer circuit is bypassed and no timeout occurs - allowing indefinite CV charging. With CTMR = 0.1µF, total charge time is 3 hours and trickle time is 30 minutes.
What is the role of the VREF33 pin beyond powering STAT pull-ups?
VREF33 provides a precision 3.3V ±2% output used as bias for the NTC thermistor divider, reference for the USBM current-limit comparator, and supply for external circuitry requiring stable low-noise voltage. It delivers up to 20mA with ±0.2V load regulation, and its accuracy directly impacts NTC threshold consistency and USB current limit tolerance.
Does MP2611GL-Z require an external reverse-blocking diode?
No. MP2611GL-Z integrates reverse-blocking protection using its high-side P-Channel MOSFET, which prevents battery discharge into inactive ACIN or USBIN ports. The datasheet specifies a minimum VIN–VBATT headroom of 200mV for reliable blocking, eliminating the need for external diodes and associated forward-voltage losses.
How is USB input current limit programmed, and what resistor values are recommended?
USB input current limit is set by connecting RILIM between USBM and AGND. Per Equation (3) in the datasheet: IUSB_LIM ≈ 37000/RILIM (mA). Recommended values are 82.5kΩ for 500mA (USB2.0) and 45.3kΩ for 900mA (USB3.0); RILIM must exceed 18.5kΩ to ensure full 0–2A range.
What thermal performance can be expected in a typical 4-layer PCB layout?
In a JESD51-7 4-layer PCB layout, MP2611GL-Z exhibits θJA = 48°C/W and θJC = 10°C/W. At 2A charge current and 5V input, typical power dissipation is ~0.8W, resulting in ~40°C junction rise above ambient - well below the 150°C thermal shutdown threshold and enabling continuous operation without forced airflow.
MP2611GL-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 14-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Battery Chemistry:
- Lithium Ion
- Number of Cells:
- 1
- Current - Charging:
- Constant - Programmable
- Programmable Features:
- Timer
- Fault Protection:
- Over Current, Over Temperature
- Charge Current - Max:
- 2A
- Battery Pack Voltage:
- 4.2V
- Voltage - Supply (Max):
- 6V
- Interface:
- USB
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-QFN (3x4)
MP2611GL-Z FAQ
1.How can I place an order for MP2611GL-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2611GL-Z 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 MP2611GL-Z reliable?
The price and inventory of MP2611GL-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2611GL-Z is usually 5 days.
3.What payment methods are accepted for MP2611GL-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2611GL-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2611GL-Z?
MP2611GL-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2611GL-Z 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 MP2611GL-Z?
For technical support, including MP2611GL-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2611GL-Z requirements.
6.How does Aetrix verify that MP2611GL-Z is sourced from the original manufacturer or authorized distributors?
All MP2611GL-Z 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 MP2611GL-Z meets industry standards.
7.What is the process for return or replacement of MP2611GL-Z?
All MP2611GL-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP2611GL-Z, 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 MP2611GL-Z part is unused and in its original packaging.
Return procedure for MP2611GL-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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