Triple-Output Buck Controllers - Maxim Integrated Products
Description
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DataSheet.
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19-5110; Rev 0; 1/10
TION KIT EVALUA BLE IL AVA A
Triple-Output Buck Controllers with Tracking/Sequencing
Features
S 4.
7V to 23V or 5V ±10% Input Voltage Range S Triple-Output Synchronous Buck Controllers with 120° Out-of-Phase Operation S Prebias Power-Up (MAX15049) S Output Voltage Adjustable Down to 0.
6V S Coincident/Ratiometric Tracking (MAX15048) S Accurate Sequencing Through Enable Threshold (MAX15049) S External Compensation for Maximum Flexibility S Digital Soft-Start (MAX15048/MAX15049) and SoftStop (MAX15048) S Lossless Valley-Mode Current Sensing Using RDS(ON) of the Low-Side MOSFET S PGOOD Output S Integrated Bootstrap Diodes S Programmable Switching Frequency from 200kHz to 1.
2MHz S Thermal Shutdown and Hiccup Mode Short-Circuit Protection S Space-Saving (5mm x 5mm), 32-Pin TQFN Package
PART MAX15048ETJ+ MAX15049ETJ+ TEMP RANGE -40NC to +85NC -40NC to +85NC PIN-PACKAGE 32 TQFN-EP* 32 TQFN-EP*
General Description
The MAX15048/MAX15049 are triple-output pulse-width modulated (PWM), step-down, DC-DC controllers with tracking (MAX15048) and sequencing (MAX15049) options.
The devices operate over the 4.
7V to 23V inputvoltage range.
Each PWM controller provides an adjustable output down to 0.
6V and delivers up to 15A of load current with excellent load and line regulation.
The MAX15049 can start into prebiased outputs.
The MAX15048/MAX15049 are optimized for high-performance, small-size powermanagement solutions.
The options of coincident or ratiometric tracking (MAX15048) or output sequencing (MAX15049) allow the tailoring of the power-up/power-down sequence depending on the system requirements.
Each of the MAX15048/MAX15049 PWM sections utilizes a voltage-mode control scheme with external compensation, allowing for good noise immunity and maximum flexibility with a wide selection of inductor values and capacitor types.
Each PWM section operates at the same fixed switching frequency that is programmable from 200kHz to 1.
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