Part # MAX8529 datasheet

Part Manufacturer: Maxim

Maxim

Part Description: MAX8529 DS


Part Details:

19-2696; Rev 1; 4/07 EVALUATION KIT AVAILABLE 1.5MHz Dual 180° Out-of-Phase PWM Step-Down Controller with POR MAX8529 General Description Features The MAX8529 dual, synchronized, step-down controller Low Output Noise in DSL Band generates two outputs from input supplies ranging from4.75V to 23V. Each output is adjustable from sub-1V Ceramic Input/Output Capacitors to 18V. Input voltage ripple and total RMS input ripple Step-Down or Step-Up/Step-Down Operation current are reduced by synchronized 180-degree out-of-phase operation. Four Output, 90-Degree Out-of-Phase Operation The switching frequency is adjustable from 600kHz to (Using Two MAX8529s) 1.5MHz with an external resistor. Alternatively, the con- Foldback Current Limit troller can be synchronized to an external clock gener- ated to another MAX8529 or a system clock. One 4.75V to 23V Input Supply Range MAX8529 can be set to generate an in-phase, or 90- 0 to 18V Output Voltage Range (Up to 6A) degree out-of-phase, clock signal for synchronizationwith additional controllers. This allows two controllers to > 90% Efficiency operate either as an interleaved two- or four-phase sys- Fixed-Frequency PWM Operation tem with each output shifted by 90 degrees. Thesedevices also feature soft-start and soft-stop. Adjustable 600kHz to 1.5MHz Switching The MAX8529 eliminates the need for current-sense Frequency resistors by utilizing the low-side MOSFET s on-resis- External SYNC Input tance as a current-sense element. This protects the Clock Output for Master/Slave Synchronization DC-to-DC components from damage during outputoverload conditions or when output short circuit faults Soft-Start and Soft-Stop without requiring a current-sense resistor. Adjustablefoldback current limit reduces power dissipation during RST Output with 140ms Minimum Delay short-circuit conditions. The MAX8529 includes a Lossless Current Limit (No Sense Resistor) power-on reset output to signal the system when both Ordering Information outputs reach regulation. The MAX8529 is available in a 24-pin QSOP package. An PART TEMP RANGE PIN-PACKAGE evaluation kit is available to speed designs. MAX8529EEG -40°C to +85°C 24 QSOP


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MAX8529.pdf Datasheet