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MAX8833

Maxim Integrated Products
Part Number MAX8833
Manufacturer Maxim Integrated Products
Description 2MHz Step-Down Regulator
Published May 4, 2009
Detailed Description 19-0725; Rev 0; 8/07 KIT ATION EVALU E L B AVAILA Dual, 3A, 2MHz Step-Down Regulator General Description Features o 35...
Datasheet PDF File MAX8833 PDF File

MAX8833
MAX8833

Overview
19-0725; Rev 0; 8/07 KIT ATION EVALU E L B AVAILA Dual, 3A, 2MHz Step-Down Regulator General Description Features o 35mΩ On-Resistance Internal MOSFETs o Dual, 3A, PWM Step-Down Regulators o Fully Protected Against Overcurrent, Short Circuit, and Overtemperature o ±1% Output Accuracy over Load, Line, and Temperature o Operates from 2.
35V to 3.
6V Supply o REFIN on One Channel for Tracking or External Reference o Integrated Boost Diodes o Adjustable Output from 0.
6V to 0.
9 x VIN o Soft-Start Reduces Inrush Supply Current o 0.
5MHz to 2MHz Adjustable Switching, or FSYNC Input o All-Ceramic-Capacitor Design o 180° Out-of-Phase Operation Reduces Input Ripple Current o Individual Enable Inputs and PWRGD Outputs o Available in 5mm x 5mm Thin QFN Package MAX8833 www.
datasheet4u.
com The MAX8833 high-efficiency, dual step-down regulator is capable of delivering up to 3A at each output.
The device operates from a 2.
35V to 3.
6V supply, and provides output voltages from 0.
6V to 0.
9 x VIN, making it ideal for on-board point-of-load applications.
Total output error is less than ±1% over load, line, and temperature.
The MAX8833 operates in PWM mode with a switching frequency ranging from 0.
5MHz to 2MHz, set by an external resistor.
It can also be synchronized to an external clock in the same frequency range.
Two internal switching regulators operate 180° out-of-phase to reduce the input ripple current, and consequently reduce the required input capacitance.
The high operating frequency minimizes the size of external components.
High efficiency, internal dual-nMOS design keeps the board cool under heavy loads.
The voltage-mode control architecture and the high-bandwidth (> 15MHz typ) voltage-error amplifier allow a type III compensation scheme to be utilized to achieve fast response under both line and load transients, and also allow for ceramic output capacitors.
Programmable soft-start reduces input inrush current.
Two enable inputs allow the turning on/off of each output indi...


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