Rainbow-electronics MAX17031 Manual do Utilizador

General DescriptionThe MAX17031 is a dual Quick-PWM™ step-downpower-supply (SMPS) controller with synchronous recti-fication, intended for main 5V/3.3

MAX17031Dual Quick-PWM Step-Down Controller with Low-Power LDO and RTC Regulator for MAIN Supplies10 _________________________________________________

MAX17031Dual Quick-PWM Step-Down Controller with Low-Power LDO and RTC Regulator for MAIN Supplies____________________________________________________

MAX17031Dual Quick-PWM Step-Down Controller with Low-Power LDO and RTC Regulator for MAIN Supplies12 _________________________________________________

Detailed DescriptionThe MAX17031 step-down controller is ideal for high-voltage, low-power supplies for notebook computers.Maxim’s Quick-PWM pulse-wid

MAX17031Dual Quick-PWM Step-Down Controller with Low-Power LDO and RTC Regulator for MAIN Supplies14 _________________________________________________

MAX17031Dual Quick-PWM Step-Down Controller with Low-Power LDO and RTC Regulator for MAIN Supplies____________________________________________________

MAX17031The MAX17031 includes several features for multipur-pose notebook functionality, and is specificallydesigned for 5V/3.3V main power-supply rai

Modes of OperationForced-PWM Mode (VSKIP= 1.8V)The low-noise forced-PWM mode (VSKIP= 1.8V) dis-ables the zero-crossing comparator, which controls thel

MAX17031Secondary Feedback (SKIP)When the controller skips pulses (VSKIP> 2V), the longtime between pulses (especially if the output is sinkingcurr

Power-Good Outputs (PGOOD)and Fault ProtectionPGOOD is the open-drain output that continuouslymonitors both output voltages for undervoltage andovervo

MAX17031Dual Quick-PWM Step-Down Controller with Low-Power LDO and RTC Regulator for MAIN Supplies2 __________________________________________________

MAX17031Inductor Operating Point: This choice providestrade-offs between size vs. efficiency and transientresponse vs. output ripple. Low inductor val

In applications without large and fast load transients,the output capacitor’s size often depends on how muchESR is needed to maintain an acceptable le

MAX17031Power-MOSFET SelectionMost of the following MOSFET guidelines focus on thechallenge of obtaining high load-current capabilitywhen using high-v

Applications InformationStep-Down ConverterDropout PerformanceThe output voltage-adjustable range for continuous-conduction operation is restricted by

MAX17031Dual Quick-PWM Step-Down Controller with Low-Power LDO and RTC Regulator for MAIN SuppliesMaxim cannot assume responsibility for use of any ci

MAX17031Dual Quick-PWM Step-Down Controller with Low-Power LDO and RTC Regulator for MAIN Supplies____________________________________________________

MAX17031Dual Quick-PWM Step-Down Controller with Low-Power LDO and RTC Regulator for MAIN Supplies4 __________________________________________________

MAX17031_______________________________________________________________________________________ 5Dual Quick-PWM Step-Down Controller with Low-Power LD

MAX17031Dual Quick-PWM Step-Down Controller with Low-Power LDO and RTC Regulator for MAIN Supplies6 __________________________________________________

MAX17031Dual Quick-PWM Step-Down Controller with Low-Power LDO and RTC Regulator for MAIN Supplies____________________________________________________

MAX17031Dual Quick-PWM Step-Down Controller with Low-Power LDO and RTC Regulator for MAIN Supplies8 __________________________________________________

MAX17031Dual Quick-PWM Step-Down Controller with Low-Power LDO and RTC Regulator for MAIN Supplies____________________________________________________