MP2637

Active
2.5A Single Cell Switch Mode Battery Charger with Power Path Management (PPM) and 2.4A Boost Current with Trickle Timer


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Product Description

The MP2637 is a highly-integrated, flexible, switch-mode battery charger with system power path management, designed for single-cell Li-ion or Li-Polymer batteries used in a wide range of applications. The MP2637 can operate in both charge mode and boost mode to allow full system and battery power management. When input power is present, the device operates in charge mode. It automatically detects the battery voltage and charges the battery in three phases: trickle current, constant current and constant voltage. Other features include charge termination and auto-recharge. This device also integrates both input current limit and input voltage regulation in order to manage input power and meet the priority of the system power demand. In the absence of an input source, the MP2637 switches to boost mode through the MODE pin to power the SYS pins from the battery. The OLIM pin programs the output current limit in boost mode. The MP2637 also allows for output short circuit protection to completely disconnect the battery from the load in the event of a short circuit fault. Normal operation will recover as soon as the short circuit fault is removed. The MP2637 provides full operating status indication to distinguish charge mode from boost mode. To guarantee safe operation, the MP2637 limits the die temperature to a preset value of 120oC. Other safety features include input over-voltage protection, battery over-voltage protection, thermal shutdown, battery temperature monitoring, and

Product Features

  • Up to 16V Sustainable Input Voltage
  • 4.5V-to-6V Operating Input Voltage Range
  • Power Management function, Integrated Input-Current Limit, Input Voltage Regulation
  • Up to 2.5A Programmable Charge Current
  • Trickle-Charge Function
  • Selectable 4.2V/ 4.35V Charge Voltage with 0.5% Accuracy
  • Negative Temperature Coefficient Pin for Battery Temperature Monitoring
  • Programmable Timer Back-Up Protection
  • Thermal Regulation and Thermal Shutdown
  • Internal Battery Reverse Leakage Blocking
  • Integrated Over Voltage Protection and Over Current Protection for Pass-Through Path
  • Reverse Boost Operation Mode for System Power
  • Up to 2.4A Programmable Output Current Limit for Boost Mode
  • Integrated Short Circuit Protection and Output Over Voltage Protection for Boost Mode

Parametrics

  • Operating Vin (min) (V)4.5
  • Operating Vin (max) (V)6.5
  • Absolute Vin (max) (V)20
  • Number of Series Cells1
  • GradeCatalog
  • NVDC
  • Vbatt (max) (V)4.35
  • Vbatt (min) (V)4.2
  • Battery TypeLi-Ion, Li-Polymer
  • Iotg (A)2.4
  • Iin (max) (A)2.7
  • Icharge (max) (A)2.5
  • Votg (max) (V)5
  • TopologyBuck
  • fsw (kHz)600
  • Vtc (V)3
  • Vrechg (mV)4
  • Control InterfaceStandalone
  • 特性Batt NTC Monitor, Cell OCP, Input Bypass Power Path, Power Bank Output Mode, Thermal Regulation, USB OTG (Boost Mode), VIN Regulation
  • 封装QFN-24 (4x4)
  • TimerYes
  • NTC Monitoring
  • EN Control
  • Internal LDO
  • Charge Status Yes

Reference Materials