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Monolithic Power Systems Inc. MP2625BGL-Z
- Part No.:
- MP2625BGL-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Battery Chargers
- Package:
- 20-PowerTFQFN
- Datasheet:
-
MP2625BGL-Z.pdf
- Description:
- IC BATT CHG LI-ION 1CELL 20QFN
- Quantity:
- Payment:
- Shipping:
Inventory:6,329
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Product details
Overview
MP2625BGL-Z from Monolithic Power Systems is a 2A synchronous buck switching battery charger IC with integrated NVDC (Narrow Voltage DC) power path management for single-cell Li-ion batteries. It delivers regulated SYS output voltage (programmable 4.08–4.4V or auto-adaptive 3.45–4.5V), supports dual-input USB/DC adapter (4–10V), and implements five independent control loops including input current limit (up to 2A), constant charge current (2A typ.), and thermal foldback. It enables immediate system operation with deeply discharged batteries in portable tablets and smartphones.
For engineers reviewing the MP2625BGL-Z datasheet, MP2625BGL-Z pinout, MP2625BGL-Z application, or MP2625BGL-Z equivalent, key selection criteria include its 1.6MHz switching frequency, integrated 40mΩ BATT-to-SYS ideal diode, programmable IIN via ILIM/M0/M1, NTC-based battery temperature monitoring, and QFN-20 (3mm×4mm) package with thermal pad.
Technical Context
The MP2625BGL-Z integrates a fixed-frequency (1.6MHz) synchronous buck converter with adaptive SYS voltage regulation-maintaining VSYS ≈ VBATT + 200mV when VBATT > 3.4V and clamping at 3.6V when VBATT ≤ 3.4V-to minimize charging loss while ensuring system boot. Its NVDC architecture decouples system power and battery charging using an internal 40mΩ MOSFET as a bidirectional power path switch.
Five closed-loop controls operate concurrently: input current limit (via ILIM pin or M0/M1 logic), input voltage clamp (via VLIM resistor divider), constant-current/constant-voltage battery charge (ISET-programmed up to 2A), terminal battery voltage regulation (4.2V ±32mV), and on-die thermal foldback (120°C activation, 150°C shutdown). All loops share a unified control engine that prioritizes system load over charging current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.0V to 10.0V - Supports USB2.0/3.0 and wide-range DC adapters without external LDO or overvoltage protection. |
| Max Charge Current | 2.0A (typ.) - Programmable via 1.05kΩ resistor on ISET pin; enables full-rate charging from 5V/2A sources. |
| Switching Frequency | 1.6MHz (typ.) - Enables use of small 1.2µH inductors and reduces EMI filtering requirements. |
| SYS Output Regulation | 4.08V–4.4V (user-programmable) or auto-adaptive (3.45–4.5V) - Ensures system operation during battery recharge without brownout. |
| Input Current Limit | 2.0A (default), 825mA (USB3.0), 450mA (USB2.0) - Configurable via M0/M1 pins or ILIM resistor; prevents adapter overload and ensures USB compliance. |
| Thermal Protection | 120°C foldback / 150°C shutdown - On-chip thermal sensor dynamically reduces charge current before shutdown to sustain partial operation. |
| Battery Voltage Accuracy | ±32mV at 4.2V - Tight CV regulation preserves Li-ion cycle life and avoids overcharge. |
Pinout & Package
MP2625BGL-Z is housed in a thermally enhanced QFN-20 package (3mm × 4mm, 0.5mm pitch) with exposed thermal pad (Pin 5 = PGND). The package supports high-power dissipation (θJA = 48°C/W) and requires PCB thermal vias under the pad for reliable 2A operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (BST) | Bootstrap supply | Connects external capacitor between BST and SW to generate gate drive voltage > VIN for high-side NMOS. |
| 3 (IN) | Main power input | Accepts 4–10V from USB or DC adapter; feeds buck converter and enables ACOK status. |
| 2,4 (SW) | Switch node | Drives external 1.2µH inductor; carries peak currents up to 5A during switching. |
| 5 (PGND) | Power ground | High-current return path for buck converter and BATT-to-SYS FET; tied to thermal pad. |
| 6 (EN) | Enable control | Active-low logic input; disables all functions and reduces quiescent current to 3µA when pulled high. |
| 7–8 (M0, M1) | Input current mode select | Logic pair sets USB2.0/USB3.0/programmable/default input current limits without resistors. |
| 9 (CHGOK) | Charge status indicator | Open-drain output pulled low during charging; high (with external pull-up) indicates full charge or timer fault. |
| 10 (ACOK) | Input power presence | Open-drain output pulled low when valid IN voltage (>3.65V and >VBATT+280mV) is detected. |
| 12 (SYSFB) | SYS voltage feedback | Resistor divider from SYS to AGND programs VSYS between 4.08V and 4.4V; floating disables programming. |
| 13 (SYS) | System power rail | Regulated output powering host system and battery charger; supplies up to 2A total load (system + charge). |
| 14 (BATT) | Battery terminal | Connects to single-cell Li-ion anode; internal 40mΩ FET enables BATT-to-SYS power supplement during input dropout. |
| 15 (ISET) | Charge current programming | Resistor to AGND sets ICC (e.g., 1.05kΩ = 2.0A); floating disables charging. |
| 16 (NTC) | Battery temperature sense | Interfaces with NCP18XH103F thermistor to halt charging outside 0°C–50°C range. |
| 17 (ILIM) | Adapter input current set | Resistor to AGND programs IIN up to 2A; 1.14V reference enables precise current limiting. |
| 18 (TMR) | Charge safety timer | Capacitor to AGND sets trickle/CC timeout (e.g., 0.1µF = 43min trickle, 6.2hr CC); floating disables timer. |
| 19 (VLIM) | Input voltage clamp | Resistor divider from IN to AGND sets VIN clamp threshold (e.g., 1.52V reference → 4.5V clamp with R1/R2=1.96). |
| 20 (VCC) | Internal LDO output | 4.5V ±0.1V regulated supply for internal circuitry; powers CHGOK/ACOK pull-ups and logic. |
Key Features
| Feature | Design Value |
|---|---|
| Smart NVDC Power Path | Independent regulation of SYS and BATT enables instant system boot with dead batteries and seamless transition between input/battery power. |
| Fully Integrated Power Stage | No external MOSFETs, blocking diodes, or current-sense resistors required-reduces BOM count and PCB area by >30%. |
| Five Concurrent Control Loops | Simultaneous input current, input voltage, constant-current, constant-voltage, and thermal regulation prevent system instability under dynamic loads. |
| Programmable Safety Timer | Separate trickle-charge and CC-phase timeouts (configurable via TMR capacitor) prevent unsafe extended charging of defective cells. |
| NTC-Based Battery Thermal Monitoring | Dual-threshold detection (0°C low, 50°C high) with hysteresis halts charging outside safe operating temperature window. |
Applications
| Smartphone Power Management | Tablet PC Charging System |
|---|---|
Use Scenario: Dual-input (USB-C + wall adapter) charging in slim-profile smartphones with high-capacity 4000mAh+ Li-ion batteries. IC Role / Device Role / Timing Role: Primary switching charger with NVDC power path managing real-time SYS rail stability and battery charge sequencing. Use Value: Enables zero-delay system wake-up from deep discharge and maintains 4.2V battery CV accuracy ±32mV to extend cycle life beyond 500 cycles. | Use Scenario: High-current (2A) charging in 10-inch tablets with active stylus and display backlight demanding >1.5A system load during charge. IC Role / Device Role / Timing Role: System power supervisor coordinating 1.6MHz buck conversion, BATT-to-SYS supplemental power, and USB3.0-compliant input current limiting. Use Value: Delivers 4.4V SYS rail under full load while sustaining 1.8A charge current-reducing full-charge time by 22% vs. linear chargers. |
| E-Book Reader Battery System | Portable GPS Navigation Device |
Use Scenario: Low-quiescent, long-runtime e-reader with cold-weather operation requiring battery temperature cutoff below 0°C. IC Role / Device Role / Timing Role: Integrated charger and thermal protector using NTC input and 3µA shutdown current to maximize standby time. Use Value: Reduces system-level power loss by 45% vs. discrete buck + linear charger solutions, extending battery runtime to >10 days per charge. | Use Scenario: Automotive-grade portable GPS with intermittent 12V car adapter input and frequent battery cycling in variable ambient temperatures. IC Role / Device Role / Timing Role: Input-robust charger implementing VIN clamp (via VLIM) to protect against 14V automotive transients and NTC monitoring for cabin temperature extremes. Use Value: Maintains safe charging across -20°C to +70°C ambient via programmable thermal thresholds-preventing lithium plating and capacity loss. |
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 |
|---|---|---|---|
| BQ25611DRTWR | Lower max charge current (1.5A), no integrated BATT-to-SYS FET, requires external ideal diode for NVDC. | Lacks autonomous BATT-to-SYS power supplement; unsuitable for systems requiring uninterrupted operation during input dropout. | Select if cost sensitivity outweighs need for seamless power path and 2A charging capability. |
| IP2328TR | Higher input voltage limit (13.5V), but only 1.2A max charge current and no programmable SYSFB voltage. | Fixed 4.2V SYS output limits flexibility for systems needing >4.2V rail (e.g., USB PD sink negotiation). | Prefer for ruggedized industrial handhelds with wide-input adapters but lower system power demands. |
Compared with BQ25611DRTWR and IP2328TR, MP2625BGL-Z uniquely integrates a 40mΩ BATT-to-SYS FET enabling true NVDC operation, supports 2A charging with 1.6MHz switching, and offers user-programmable SYS voltage-making it optimal for space-constrained, high-performance portable devices requiring robust power path autonomy.
Availability
MP2625BGL-Z is available at Aetrix Electronics and suitable for smartphone power management, tablet PC charging systems, e-book reader battery subsystems, and portable GPS navigation devices requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MP2625BGL-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-efficiency analog and power ICs, with core expertise in DC-DC conversion, battery management, and motor control.
The MP2625BGL-Z belongs to MPS's single-cell Li-ion switching charger product line, designed specifically for portable consumer electronics requiring compact, high-current, NVDC-enabled charging with minimal external components.
FAQ
What is the function of the BST pin on MP2625BGL-Z?
The BST (bootstrap) pin provides a floating gate-drive supply for the high-side NMOS switch. A capacitor must be placed between BST and SW to generate a voltage ~5V above SW, enabling full enhancement of the internal high-side FET during 100% duty-cycle operation near VIN ≈ VSYS. This ensures efficient buck regulation down to low input-output differentials.
How does MP2625BGL-Z handle input power removal during system operation?
Upon input removal, the internal 40mΩ BATT-to-SYS MOSFET turns on automatically, allowing the battery to power the SYS rail without interruption. This ideal-diode behavior-enabled by real-time comparison of VBATT vs. VSYS-ensures zero-downtime system operation, critical for GPS and medical handhelds where power continuity is mandatory.
Can MP2625BGL-Z charge a battery while the system is powered off?
No. The EN pin must be asserted low to enable charging; when EN is high (disabled), all internal regulators and charge circuits shut down, reducing quiescent current to 3µA. However, if EN is held low and input is present, charging proceeds even if the host system is unpowered-provided SYS load is disconnected or negligible.
What is the purpose of the VLIM pin and how is it configured?
The VLIM pin sets the input voltage clamp threshold using a resistor divider from IN to AGND. When the divided voltage reaches 1.52V, the MP2625BGL-Z reduces buck duty cycle to hold VIN at the programmed level-protecting downstream circuits from overvoltage during adapter hot-plug or transient events. For a 4.5V clamp, use R1 = 196kΩ and R2 = 100kΩ.
Does MP2625BGL-Z support USB BC1.2 or proprietary fast-charge protocols?
No. MP2625BGL-Z implements fixed USB2.0 (450mA) and USB3.0 (825mA) input current limits via M0/M1 pins but lacks D+/D− detection or protocol negotiation circuitry. It is compatible with standard USB ports and fixed-voltage adapters only-not Qualcomm Quick Charge, USB PD, or Samsung AFC.
How is battery temperature monitoring implemented on MP2625BGL-Z?
MP2625BGL-Z uses the NTC pin to interface with a standard NCP18XH103F 10kΩ thermistor inside the battery pack. The IC applies a bias current, measures voltage at NTC, and compares it to factory-trimmed thresholds (65% VCC at 0°C, 33.5% VCC at 50°C) to disable charging outside the safe thermal window-without requiring external ADC or microcontroller intervention.
What is the minimum recommended inductor value for MP2625BGL-Z?
The datasheet specifies a 1.2µH shielded power inductor (e.g., Coilcraft XAL6060-102MEB) as the minimum value for stable 2A operation at 1.6MHz. Using <1.2µH risks peak current exceeding 5A, triggering the internal 4A peak current limit and causing audible switching noise or reduced efficiency under heavy load.
MP2625BGL-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 20-PowerTFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Battery Chemistry:
- Lithium Ion
- Number of Cells:
- 1
- Current - Charging:
- Constant - Programmable
- Programmable Features:
- Current, Timer
- Fault Protection:
- Over Temperature
- Charge Current - Max:
- 2A
- Battery Pack Voltage:
- 4.2V
- Voltage - Supply (Max):
- 10V
- Interface:
- USB
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-QFN (3x4)
MP2625BGL-Z FAQ
1.How can I place an order for MP2625BGL-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2625BGL-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 MP2625BGL-Z reliable?
The price and inventory of MP2625BGL-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2625BGL-Z is usually 5 days.
3.What payment methods are accepted for MP2625BGL-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2625BGL-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2625BGL-Z?
MP2625BGL-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2625BGL-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 MP2625BGL-Z?
For technical support, including MP2625BGL-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2625BGL-Z requirements.
6.How does Aetrix verify that MP2625BGL-Z is sourced from the original manufacturer or authorized distributors?
All MP2625BGL-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 MP2625BGL-Z meets industry standards.
7.What is the process for return or replacement of MP2625BGL-Z?
All MP2625BGL-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP2625BGL-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 MP2625BGL-Z part is unused and in its original packaging.
Return procedure for MP2625BGL-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MP2625BGL-Z Tags
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