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Monolithic Power Systems Inc. MP2615CGQ-Z
- Part No.:
- MP2615CGQ-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Battery Chargers
- Package:
- 16-PowerVFQFN
- Datasheet:
-
MP2615CGQ-Z.pdf
- Description:
- 2.1A, 1- OR 2-CELL LI-ION BATTER
- Quantity:
- Payment:
- Shipping:
Inventory:13,297
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Product details
Overview
MP2615CGQ-Z from Monolithic Power Systems is a synchronous buck-mode Li-ion battery charger IC supporting 1-cell (4.1V/cell or 4.2V/cell) or 2-cell (8.2V or 8.4V) configurations, delivering up to 2.1A configurable charge current with ±0.75% full-battery voltage accuracy, constant-off-time (COT) control enabling up to 99% duty cycle, and integrated high-side/low-side MOSFETs for compact portable power management in smartphones and handheld devices.
For engineers reviewing the MP2615CGQ-Z datasheet, MP2615CGQ-Z pinout, MP2615CGQ-Z application, or MP2615CGQ-Z equivalent, key selection considerations include input voltage range (4.75V–18V), dual-cell configuration via CELL pin logic, SEL-driven battery voltage selection, thermal and NTC-based safety monitoring, and QFN-16 (3mm×3mm) package layout constraints.
Technical Context
The MP2615CGQ-Z implements peak-current-mode control with dual-loop regulation: a current-sense amplifier (CSP–BATT) sets precise CC charge via external 25mΩ resistor, while a trimmed voltage reference (±0.75%) governs CV termination at 4.1V/cell or 4.2V/cell. Its COT architecture dynamically adjusts switching frequency (760kHz typical, 160kHz foldback) to sustain high duty cycle near VIN ≈ VBATT, minimizing input-to-battery headroom loss to 300mV.
Integrated protection includes cycle-by-cycle over-current limiting (3.2A peak), thermal shutdown at 150°C with 20°C hysteresis, NTC-based cold/hot temperature thresholds (73.3%/31.1% of VCC), and auto-recharge triggered at 4.0V/cell (SEL = AGND) with 150mV hysteresis - all managed without external compensation components due to internal loop compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.75V to 18V - supports wide-input USB PD, wall adapters, and industrial DC supplies without pre-regulation. |
| Max Charge Current | 2.1A ±5% - set by 25mΩ sense resistor; enables fast charging of 1500–3000mAh batteries in <3 hours. |
| Battery Voltage Accuracy | ±0.75% - ensures safe, reliable full-charge cutoff within ±31.5mV at 4.2V/cell, preventing overvoltage stress. |
| Switching Frequency | 760kHz typical - balances EMI, inductor size, and efficiency; folds back to 160kHz under low-VBATT conditions. |
| Duty Cycle Limit | Up to 99% - maintains usable charge current even when VIN is only 300mV above VBATT, critical for low-headroom inputs. |
| Thermal Shutdown | 150°C with 20°C hysteresis - protects die during sustained high-power operation; resumes charging at 130°C. |
| NTC Monitoring | Voltage window: 73.3% (cold) / 31.1% (hot) of 4.5V VCC - enables precise 0°C–50°C battery temperature supervision using standard NCP18XH103 thermistor. |
Pinout & Package
MP2615CGQ-Z is housed in a thermally enhanced QFN-16 package (3mm × 3mm, 0.5mm pitch) with exposed thermal pad (PGND-connected) for efficient heat dissipation in space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW | Switch node | Drives external inductor; connects BST capacitor to enable high-side MOSFET gate drive above VIN. |
| VIN | Main power input | Accepts 4.75V–18V; feeds internal regulators and power switches; requires local 22µF ceramic decoupling. |
| VCC | Internal 4.5V regulator output | Supplies bias for NTC divider and low-side gate drive; must be bypassed with 1µF to AGND; no external load permitted. |
| CELL | Cell-count configuration | Pull to VCC for 1-cell; float or tie to AGND for 2-cell - selects internal voltage reference scaling. |
| SEL | Battery voltage selection | Pull high for 4.1V/cell (8.2V total); pull low/floating for 4.2V/cell (8.4V total) - enables chemistry-specific termination. |
| EN | Enable control | Active-high logic input; internal 1MΩ pulldown; recommended series 100kΩ resistor for noise immunity. |
| AGND | Analog ground reference | Separate from PGND to minimize noise coupling into current-sense and voltage feedback paths. |
| BATT | Battery positive terminal | Connects directly to battery anode; used with CSP for current sensing and OVP detection. |
| CSP | Current-sense positive | High-side sense input; forms Kelvin connection with RS1 (25mΩ) across BATT for accurate ICC measurement. |
| CHGOK | Charge status indicator | Open-drain output: low during active charge; high-impedance at completion, timeout, or fault (NTC, thermal, EN off). |
| ACOK | Input supply valid indicator | Open-drain output: low when VIN > VBATT + 300mV and above UVLO (3.75V), confirming viable input source. |
| NTC | Thermistor interface | Forms resistor divider with VCC and external thermistor; monitors battery temperature via analog voltage window detection. |
| TMR | Safety timer control | Capacitor-to-AGND sets trickle (30 min @ 0.47µF) and CC/CV (2.95 hr @ 0.47µF) timeouts; short to AGND disables timer. |
| BST | Bootstrap supply | Connects to SW via 0.1µF capacitor to generate floating gate drive voltage for high-side MOSFET. |
| PGND | Power ground return | High-current return path for switch node and internal MOSFETs; ties to thermal pad for thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| Fully integrated synchronous buck | Eliminates need for external high-side/low-side MOSFETs and gate drivers - reduces BOM count and PCB area by ≥4 components. |
| Configurable cell count & voltage | Hardware-selectable 1-cell/2-cell mode and 4.1V/4.2V per cell via CELL/SEL pins - supports diverse Li-ion chemistries without firmware change. |
| Preconditioning for depleted batteries | Trickle-charge mode activates below 3.0V/cell (2.91V with SEL high) - safely recovers deeply discharged cells before CC ramp-up. |
| No external reverse-blocking diode | Internal reverse leakage <0.5µA at 4V VBATT - prevents battery discharge through VIN path when input is absent, improving standby efficiency. |
| Accurate, resistor-set charge current | 52.5mV current-sense threshold with ±5% tolerance - enables 2.1A charge with 25mΩ RS1 (0.1W, 1% tolerance) and minimal layout sensitivity. |
Applications
| Smartphones | Portable Media Players |
|---|---|
Use Scenario: Fast-charging lithium-polymer battery in slim-profile smartphone with USB-C input up to 18V. IC Role / Device Role / Timing Role: Primary battery charger managing CC/CV profile, NTC temperature supervision, and input-status handshaking with system PMIC. Use Value: Enables 2.1A charge current with <300mV VIN–VBATT headroom, reducing adapter dependency and supporting multi-voltage USB PD negotiation. | Use Scenario: Dual-cell (8.4V) Li-ion pack in ruggedized media player requiring robust thermal and overvoltage protection. IC Role / Device Role / Timing Role: Standalone charger IC handling automatic recharge, safety timer expiration, and open-drain CHGOK/ACOK signaling to host microcontroller. Use Value: ±0.75% voltage accuracy prevents cell imbalance in series configuration; 2-cell mode selected via floating CELL pin simplifies board design. |
| Portable Handheld Solutions | Industrial Portable Test Equipment |
Use Scenario: Battery-powered barcode scanner operating across -20°C to +60°C ambient with hot/cold battery temperature limits. IC Role / Device Role / Timing Role: Integrated charger with NTC monitoring, where VCC-referenced NTC window detects 0°C cold and 50°C hot thresholds. Use Value: Eliminates external ADC or comparator; NCP18XH103 thermistor directly interfaces to NTC pin with no calibration required. | Use Scenario: Field-deployable multimeter with replaceable 2-cell Li-ion pack and long-term storage requirements. IC Role / Device Role / Timing Role: Charger providing preconditioning for deeply discharged batteries (<2.0V/cell) and auto-recharge at 4.0V/cell after self-discharge. Use Value: Trickle-charge mode with 30-minute safety timer prevents over-stress on aged cells; SEL pin configures 4.1V/cell for extended cycle life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Li-ion battery charger applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ24195RGER | 4.5V–17V input; 2.25A max charge; I²C programmable; no integrated NTC monitor - requires external ADC or comparator. | Requires MCU firmware control and additional analog circuitry for temperature safety; better suited for systems with existing I²C infrastructure. | Select when digital configurability (charge current, voltage, timers) and system-level integration outweigh analog simplicity and cost. |
| ISL9238HRZ-T | 4.5V–18V input; 2.0A max charge; supports 1–4 cells; includes SMBus interface and dynamic power-path management. | Targets higher-cell-count applications and systems needing simultaneous charging + system power (DPPM); larger 4mm×4mm QFN package. | Select when scaling beyond 2-cell stacks or requiring seamless transition between battery and adapter power without system brownout. |
Compared with BQ24195RGER and ISL9238HRZ-T, MP2615CGQ-Z delivers identical input range and comparable current capability but achieves full safety compliance (NTC, thermal, timer) with zero external components - making it optimal for cost-sensitive, MCU-light portable designs where analog autonomy is prioritized.
Availability
MP2615CGQ-Z is available at Aetrix Electronics and suitable for smartphones, portable media players, handheld scanners, and industrial test equipment requiring stable component supply, consistent parametric performance across temperature, and long-term lifecycle support for consumer and embedded OEM programs.
Supply support for MP2615CGQ-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 power management ICs, with expertise in DC/DC converters, battery chargers, LED drivers, and motor drivers for consumer, industrial, and automotive markets.
The MP2615C product line targets compact, high-efficiency battery charging in space-constrained portable electronics, emphasizing integrated protection, minimal external component count, and hardware-configurable flexibility for rapid design-in without firmware dependencies.
FAQ
What is the minimum input-to-battery voltage difference required for MP2615CGQ-Z to maintain charging?
The device requires only 300mV headroom (VIN – VBATT) to sustain charging, enabled by its constant-off-time control and integrated synchronous rectification. This allows operation down to VIN = VBATT + 0.3V - critical for USB PD sources stepping down from 9V/15V to partially charged 2-cell batteries near 7.5V.
How does the MP2615CGQ-Z handle deeply discharged batteries below 2.0V/cell?
It initiates trickle-charge mode when VBATT falls below 2.91V/cell (SEL = high) or 3.0V/cell (SEL = low), delivering 10% of full CC current (e.g., ~210mA for 2.1A setting) until voltage rises above the threshold, preventing lithium plating and enabling safe recovery of over-discharged cells.
Can the MP2615CGQ-Z be used for both 1-cell and 2-cell configurations on the same PCB?
Yes - the CELL pin determines configuration: tie to VCC for 1-cell (4.1/4.2V/cell), float or connect to AGND for 2-cell (8.2/8.4V). This hardware-selectable flexibility allows single-board support of multiple battery variants without redesign or firmware changes.
What is the role of the VCC pin, and why must it not drive external loads?
VCC is an internally generated 4.5V coarse regulator used solely to bias the NTC resistor divider and low-side gate driver. Loading it externally causes regulation error and NTC measurement inaccuracy; the datasheet explicitly prohibits external loads and mandates 1µF bypass to AGND for stability.
How is the safety timer configured, and what happens when it expires?
A capacitor (CTMR) from TMR to AGND sets both trickle-charge (30 min @ 0.47µF) and CC/CV (2.95 hr @ 0.47µF) timeouts. On expiration, CHGOK goes high-impedance, charging halts, and the device remains latched until auto-recharge triggers, POR occurs, or EN toggles - ensuring fail-safe behavior without MCU intervention.
Does MP2615CGQ-Z require external compensation components for loop stability?
No - internal loop compensation eliminates external RC networks. The device achieves stable CC/CV regulation across its full input (4.75V–18V) and battery (2V–8.4V) ranges using factory-trimmed transconductance amplifiers and fixed-frequency COT control, reducing design risk and layout sensitivity.
What package variant corresponds to the "-Z" suffix in MP2615CGQ-Z?
The "-Z" denotes tape-and-reel packaging for automated SMT assembly. The base part MP2615CGQ is identical electrically and mechanically - both use the QFN-16 (3mm×3mm) package with wettable flanks and exposed thermal pad - differing only in packaging format and reel quantity (typically 3000 units/reel).
MP2615CGQ-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 16-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Battery Chemistry:
- Lithium Ion/Polymer
- Number of Cells:
- 1 ~ 2
- Current - Charging:
- Constant
- Programmable Features:
- -
- Fault Protection:
- Over Current, Over Temperature
- Charge Current - Max:
- 2.1A
- Battery Pack Voltage:
- 2V ~ 8.4V
- Voltage - Supply (Max):
- 18V
- Interface:
- -
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (3x3)
MP2615CGQ-Z FAQ
1.How can I place an order for MP2615CGQ-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2615CGQ-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 MP2615CGQ-Z reliable?
The price and inventory of MP2615CGQ-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2615CGQ-Z is usually 5 days.
3.What payment methods are accepted for MP2615CGQ-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2615CGQ-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2615CGQ-Z?
MP2615CGQ-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2615CGQ-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 MP2615CGQ-Z?
For technical support, including MP2615CGQ-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2615CGQ-Z requirements.
6.How does Aetrix verify that MP2615CGQ-Z is sourced from the original manufacturer or authorized distributors?
All MP2615CGQ-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 MP2615CGQ-Z meets industry standards.
7.What is the process for return or replacement of MP2615CGQ-Z?
All MP2615CGQ-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP2615CGQ-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 MP2615CGQ-Z part is unused and in its original packaging.
Return procedure for MP2615CGQ-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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