Datasheet Linear Technology LTC4015

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  Multi-Chemistry Battery Charger Supports Maximum Power Point Tracking for Solar Panels &mdash LT Journal
  PDF, 381 Kb, File published: Apr 19, 2017
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  Multi-Chemistry Battery Charger Supports Maximum Power
  Point Tracking for Solar Panels
  Trevor Barcelo The LTC4015 is a versatile synchronous step-down charger capable of supporting a variety
  of battery chemistries including lead-acid, Li-ion and LiFePO4. The LTC4015 features an
  extensive list of battery charging functions, including coulomb counting and an array of
  battery and system monitor capabilities. However, this article focuses on its input control
  loop, which enables solar panel maximum power point tracking (MPPT) functionality.
  For readers who have not yet encountered the general concept of MPPT, or
  could use a knowledge refresh, visit
  www.linear.com/solutions/4545. Regardless
  of your general knowledge of MPPT, to
  understand the LTC4015’s implementation, it is important to understand the
  LTC4015’s multi-control-loop operation.
  BASIC DEVICE OPERATION The LTC4015 charges batteries with a
  peak current mode synchronous stepdown controller driving MN2 and MN3
  (see Figure 1). The controller can regulate
  four parameters: input voltage (using
  the UVCLFB pin), input current (CLP and
  CLN), battery charge voltage (BATSENS)
  and battery charge current (CSP and
  CSN). Both peak inductor current control
  and battery charge current regulation
  are accomplished with sense resistor …

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Manufacturer's Classification

• Power Management > Battery Management > Battery Charger IC > Switching Battery Chargers | SMBus/I2C/SPI Controlled Battery Chargers
• Power Management > Battery Management > Coulomb Counter (Battery Fuel Gauge)
• Power Management > Energy Harvesting