DatasheetsPDF.com

MAX8725

Maxim Integrated Products
Part Number MAX8725
Manufacturer Maxim Integrated Products
Description (MAX8725 / MAX1909) Multichemistry Battery Charger
Published Feb 9, 2007
Detailed Description MAX1909/MAX8725 EVALUATION KIT AVAILABLE Multichemistry Battery Chargers with Automatic System Power Selector General ...
Datasheet PDF File MAX8725 PDF File

MAX8725
MAX8725

Overview
MAX1909/MAX8725 EVALUATION KIT AVAILABLE Multichemistry Battery Chargers with Automatic System Power Selector General Description The MAX1909/MAX8725 highly integrated control ICs simplify construction of accurate and efficient multichemistry battery chargers.
The MAX1909/MAX8725 use analog inputs to control charge current and voltage, and can be programmed by a host microcontroller (µC) or hardwired.
High efficiency is achieved through use of buck topology with synchronous rectification.
The maximum current drawn from the AC adapter is programmable to avoid overloading the AC adapter when supplying the load and the battery charger simultaneously.
The MAX1909/MAX8725 provide a digital output that indicates the presence of an AC adapter, and an analog output that monitors the current drawn from the AC adapter.
Based on the presence or absence of the AC adapter, the MAX1909/MAX8725 automatically select the appropriate source for supplying power to the system by controlling two external p-channel MOSFETs.
Under system control, the MAX1909/MAX8725 allow the battery to undergo a relearning or conditioning cycle in which the battery is completely discharged through the system load and then recharged.
The MAX1909 includes a conditioning charge feature while the MAX8725 does not.
The MAX1909/MAX8725 are available in space-saving 28-pin, 5mm ✕ 5mm thin QFN packages and operate over the extended -40°C to +85°C temperature range.
The MAX1909/MAX8725 are now available in lead-free packages.
Applications Notebook and Subnotebook Computers Hand-Held Data Terminals Pin Configuration PDL PDS CSSP CSSN SRC DHI DHIV TOP VIEW 28 27 26 25 24 23 22 DCIN 1 LDO 2 ACIN 3 REF 4 GND/PKPRES 5 ACOK 6 MODE 7 MAX1909 MAX8725 21 DLOV 20 DLO 19 PGND 18 CSIP 17 CSIN 16 BATT 15 GND 8 9 10 11 12 13 14 IINP CLS ICTL VCTL CCI CCV CCS THIN QFN Functional Diagrams appear at end of data sheet.
Benefits and Features • Precise Measurement Improves Safety and Performance • ±0.
5% Accurate Charge V...


Similar Datasheet


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site. (Privacy Policy & Contact)