- MP2764
MP2764
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Description
The MP2764 is a highly integrated buck-boost charger IC with narrow-voltage DC (NVDC) power path management control and USB power delivery (PD) source mode for 2-cell to 4-cell battery pack applications. All switching FETs are integrated for compact system solution size and easy to use. The external battery FET (BFET) is flexible for IC placement and discharge current capability design.
The device can accept a wide input voltage (VIN) range (up to 22V) for charging, and it has three operating modes during the process: boost mode when VIN is below the system voltage (VSYS), buck-boost mode when VIN is close to VSYS, and buck mode when VIN exceeds VSYS. In buck mode, the MP2764 can operate in dual-phase interleaving mode, which facilitates inductor selection because a lower inductor saturation current typically corresponds with a smaller inductor profile.
When the input power is present, the IC measures the battery voltage automatically and charges the battery with four phases: constant-current trickle charge, constant-current pre-charge, constant-current fast charge, and constant-voltage charge. Other features include charge termination and automatic recharge.
The MP2764 provides a BGATE driver output to control the external N-channel MOSFET and achieve NVDC power path management. When the battery voltage is low and the input is present, the MP2764 can regulate VSYS at a minimum level to ensure that the system can start up. Meanwhile, the battery is charged through the BFET, which is linearly regulated.
When the input source current or voltage limit is reached, power path management automatically reduces the charge current to meet the priority of the system power requirement. If the system current keeps increasing, even when the charge current is reduced to zero, supplement mode allows the battery to simultaneously power the system together with the input power supply.
When the input is absent, the system is powered by the battery through the BFET. The IC can also provide a wide output voltage (VOUT) range from 4V to 21V, with 20mV/step at the input in USB PD source mode. The output current also has output current limit regulation in USB PD source mode.
With the I2C/SMBus interface, the MP2764 can be flexibly configured to set the charging parameters, such as the input current limit, VIN limit, charge current, battery-full voltage, minimum VSYS, and the output voltage and current in USB PD source mode. The IC can also provide the operation status through status and fault registers with an interrupt. The interrupt can also be masked by configuring the corresponding register.
To guarantee safe operation, the IC limits the die temperature to a preset value (120°C). Other safety features include input over-voltage protection (OVP), battery OVP, system OVP, thermal shutdown, battery temperature protection, and a configurable timer to prevent prolonged charging of a dead battery.
To comply with IMVP9 specifications, the IC provides an analog output pin for system power (PSYS), input current (IAM), and battery current (IBM). It also has a processor hot indication pin (/PROCHOT) for system power control.
The MP2764 integrates a VMIN active protection (VAP) function, which can supplement the system power from the input capacitor when the system is powered by the battery only.
The MP2764 is available in a QFN-32 (4mmx5mm) package.
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Features & Benefits
- All FETs Integrate a Buck-Boost Converter
- Seamless Mode Transition Between Buck/Boost and Buck-Boost Mode
- Configurable 500kHz to 1MHz Switching Frequency (fSW)
- Charges 2 to 4 Cells in Series Battery Pack:
- Up to 28V Input Sustainable Voltage
- 4V to 22V Operating Voltage with Input Over-Voltage Protection (OVP)
- Input Power Source Status Indication
- Up to 8A of Configurable Charge Current
- Configurable Battery-Full Regulation Voltage, Up to 4.7V/Cell with 0.5% Accuracy across 0°C to 85°C Temperature Range
- Configurable Input Maximum Current Limit and Input Minimum Voltage Limit
- Thermal Regulation
- Narrow-Voltage DC (NVDC) Power Path Management via External N-Channel Battery FET
- Configurable Minimum and Maximum System Voltage Regulation
- System OVP and System Short-Circuit Protection (SCP)
- On-the-Go (OTG) Pin Control to Enable the USB Power Delivery (PD) Source Mode:
- 4V to 21V Output Voltage with 20mV/Step to be Compliant to USB PD Programmable Power Supply (PPS)
- Configurable Output Current Limit with 50mV/Step in USB PD Source Mode
- Output OVP and SCP in Source Mode
- Dual Phase Interleave Operation for Buck Charging Mode with Current Balance
- IMVP9 Compliant Features for Intel CPU:
- VMIN Active Protection (VAP) Supplements Battery from Input Capacitors during System Peak Power Spike
- Comprehensive PROCHOT Profile
- Fast System Power Indication with the PSYS Pin
- Input Current and Battery Discharge Current Sensing via the IAM/IBM Pin
- Two-Level Input Current Limit
- Ultra-Sound Mode to Avoid Audible Noise
- Integrated 10-Bit Analog-to-Digital Converter (ADC) to Monitor the Voltage, Current, and Power
- Safety:
- Thermal Shutdown
- Battery Missing Detection
- BATTGONE Detection
- Battery Temperature Protection Compliant to JEITA Standard
- Configurable Charge Safety Timer
- Available in a QFN-32 (4mmx5mm) Package

Active Part Numbers:
MP2764GV-xxxx-Z MP2764GV-xxxx-P MP2764GV-0000-Z MP2764GV-0000-P MP2764GV-0001-Z MP2764GV-0001-P
Part numbers ending in P and Z are the same parts. P and Z only indicates reel size.
Meaning of P & Z
MP2764 Resources
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