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MAX1909 Datasheet

Part Number MAX1909
Manufacturers Maxim Integrated Products
Logo Maxim Integrated Products
Description (MAX8725 / MAX1909) Multichemistry Battery Charger
Datasheet MAX1909 DatasheetMAX1909 Datasheet (PDF)

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 .

  MAX1909   MAX1909






Part Number MAX1908
Manufacturers Maxim Integrated Products
Logo Maxim Integrated Products
Description Low-Cost Multichemistry Battery Chargers
Datasheet MAX1909 DatasheetMAX1908 Datasheet (PDF)

19-2764; Rev 5; 11/09 KIT ATION EVALU E L B A AVAIL www.DataSheet4U.com Low-Cost Multichemistry Battery Chargers General Description The MAX1908/MAX8724/MAX8765/MAX8765A highly integrated, multichemistry battery-charger control ICs simplify the construction of accurate and efficient chargers. These devices use analog inputs to control charge current and voltage, and can be programmed by the host or hardwired. The MAX1908/MAX8724/MAX8765/ MAX8765A achieve high efficiency using a buck topology .

  MAX1909   MAX1909







Part Number MAX1907A
Manufacturers Maxim Integrated Products
Logo Maxim Integrated Products
Description (MAX1907A / MAX1981A) Quick-PWM Master Controllers
Datasheet MAX1909 DatasheetMAX1907A Datasheet (PDF)

19-2678; Rev 0; 9/02 www.DataSheet4U.com Quick-PWM Master Controllers for VoltagePositioned CPU Core Power Supplies (IMVP-IV) General Description The MAX1907A/MAX1981A are single-phase, QuickPWM™ master controllers for IMVP-IV™ CPU core supplies. Multi-phase operation is achieved using a Quick-PWM slave controller (MAX1980). Multiphase operation reduces input ripple current requirements and output voltage ripple while easing component selection and layout difficulties. The MAX1907A/ MAX1981A i.

  MAX1909   MAX1909







Part Number MAX1904
Manufacturers Maxim
Logo Maxim
Description 500kHz Multi-Output / Low-Noise Power-Supply Controllers for Notebook Computers
Datasheet MAX1909 DatasheetMAX1904 Datasheet (PDF)

19-2224; Rev 3; 12/03 500kHz Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers General Description The MAX1901/MAX1902/MAX1904 are buck-topology, step-down, switch-mode, power-supply controllers that generate logic-supply voltages in battery-powered systems. These high-performance, dual/triple-output devices include on-board power-up sequencing, power-good signaling with delay, digital soft-start, secondary winding control, low dropout circuitry, internal frequency-compens.

  MAX1909   MAX1909







Part Number MAX1902
Manufacturers Maxim
Logo Maxim
Description 500kHz Multi-Output / Low-Noise Power-Supply Controllers for Notebook Computers
Datasheet MAX1909 DatasheetMAX1902 Datasheet (PDF)

19-2224; Rev 3; 12/03 500kHz Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers General Description The MAX1901/MAX1902/MAX1904 are buck-topology, step-down, switch-mode, power-supply controllers that generate logic-supply voltages in battery-powered systems. These high-performance, dual/triple-output devices include on-board power-up sequencing, power-good signaling with delay, digital soft-start, secondary winding control, low dropout circuitry, internal frequency-compens.

  MAX1909   MAX1909







(MAX8725 / MAX1909) Multichemistry Battery Charger

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 pack.


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