Description:

The MAX786 is a system-engineered power-supply controller for notebook computers or similar batterypowered equipment. It provides two high-performance step-down (buck) pulse-width modulators (PWMs) for +3.3V and +5V. Other features include dual, low-dropout, micropower linear regulators for
CMOS/RTC back-up, and two precision low-batterydetection comparators.

High efficiency (95% at 2A; greater than 80% at loads from 5mA to 3A) is achieved through synchronous rectification and PWM operation at heavy loads, and Idle ModeTM operation at light loads. The MAX786 uses physically small components, thanks to high operating frequencies (300kHz/200kHz) and a new current-mode PWM architecture that allows for output filter capacitors as small as 30μF per ampere of load. Line- and loadtransient responses are terrific, with a high 60kHz unitygain crossover frequency allowing output transients to be corrected within four or five clock cycles. Low system cost is achieved through a high level of integration and the use of low-cost, external N-channel MOSFETs.

Other features include low-noise, fixed-frequency PWM operation at moderate to heavy loads, and a synchronizable oscillator for noise-sensitive applications such as electromagnetic pen-based systems and communicating computers. The MAX786 is a monolithic, BiCMOS IC available in fine-pitch, surface-mount SSOP packages.

Maxim MAX786CAI MAX786 Dual-Output Power-Supply Controller Power Management IC  Features:

Dual PWM Buck Controllers (+3.3V and +5V)
Two Precision Comparators or Level Translators
95% Efficiency
420μA Quiescent Current, 70μA in Standby (linear regulators alive)
25μA Shutdown Current (+5V linear alive)
5.5V to 30V Input Range
Small SSOP Package
Fixed Output Voltages:
3.3V (standard)
3.45V (High-Speed Pentium

Application:

•  Armada 110  
  Efio P93    Efio!5080PTG   Efio!5080PTK  Elite 7400  Elite 7500
  Inspiron 8200
  LaVie LL900/6
  MD6100 FID2040
  N20U
  OmniBook 6000 F2044W EA  OmniBook 6000 F2083K EA  OmniBook 900 - Pentium II
  OmniBook 900 F1712N      OmniBook 900 Series      OmniBook XE2 F1667W DC
  OmniBook XE2 F2055W DC
  PC-BJ140M
  Portege 7200CT PP720L-6D904
  Satellite 2210CDT   Satellite 2250CDT    Satellite A80 Series     Satellite A80-168 PSA80E-06G02PGR     Satellite Pro M10 PS630L-G2068P    Satellite Pro M10 Series
  Slimnote VXe450 P88TF  Slimnote VXe500 P88TF
  Solo 2550 PIII
  Tecra 9000 PT900A-01TZ7
  Thinkpad 240 2609-41A   Thinkpad 240 Series   Thinkpad 240X 2609-61A   Thinkpad 240X 2609-61H   Thinkpad 390 2626-50A   Thinkpad 390E 2626-C0A   Thinkpad 390E 2626-E0A   Thinkpad 390X 2626-H0G   Thinkpad R30 2657-82A   Thinkpad R30 Series   Thinkpad R31 2656-E6A   Thinkpad R31 Series
  TravelMate 3200 Series   TravelMate 3202XCi   TravelMate 420 Series   TravelMate 426 Series   TravelMate 426LC   TravelMate 800 Series   TravelMate 800LCi   TravelMate 800XC
   TravelMate 801LCi   TravelMate 802LCi   TravelMate C113TCi MS2133   TravelMate C300 Series
  Versa AX Versa LX VL4J0E6C-A100A0 Versa M320 Versa Note VX Versa Note VX - 12.1" Versa TXi

Package included:

• 1 X Maxim MAX786CAI MAX786 Dual-Output Power-Supply Controller Power Management IC