Part # MAX8716-MAX8757 datasheet

Part Manufacturer: Maxim

Maxim

Part Description: MAX8716 DS


Part Details:

19-3569; Rev 2; 4/07 EVALUATION KIT AVAILABLE Interleaved High-Efficiency, Dual Power-Supply Controllers for Notebook Computers MAX8716/MAX8717/MAX8756/MAX8757 General Description Features The MAX8716/MAX8717/MAX8756/MAX8757 are dual, o Fixed Switching Frequency step-down, interleaved, fixed-frequency, switch-mode 200kHz, 300kHz, or 500kHz power-supply (SMPS) controllers with synchronous rec- 250kHz, 300kHz, or 400kHz (MAX8756 Only) tification. The MAX8716/MAX8717/MAX8756/MAX8757 o No Current-Sense Resistor Required are intended for main (5V/3.3V) power generation, while o 40/60 Optimal Interleaving the MAX8756 is optimized for I/O power rails in battery-powered systems. o Reduced Input-Capacitor Requirement Fixed-frequency operation with optimal interleaving min- o Output Voltage Fixed or Adjustable Outputs imizes input ripple current from the lowest input voltages (Dual ModeTM) up to the 26V maximum input. Optimal 40/60 interleav- 3.3V/5V Fixed or 1V to 5.5V Adjustable ing allows the input voltage to go down to 8.3V before 1.5V/1.8V Fixed or 1V to 2.3V Adjustable duty-cycle overlap occurs in 5V/3.3V applications, com- (MAX8756 Only) pared to 180° out-of-phase regulators where the duty- o 4V to 26V Input Range cycle overlap occurs when the input drops below 10V. o Independently Selectable PWM, Skip, and Low- Accurate output current limit is achieved using a sense Noise Mode Operation resistor. Alternatively, power dissipation can be o Soft-Start and Soft-Stop reduced using lossless inductor current sensing. o 2V Precision Reference with 0.75% Accuracy Independent ON/OFF controls and power-good signalsallow flexible power sequencing. Soft-start reduces o Independent Power-Good Outputs inrush current, while soft-stop gradually ramps the out-put voltage down preventing negative voltage dips. Ordering Information A low-noise mode maintains high light-load efficiency PIN- PKG while keeping the switching frequency out of the audi- PART TEMP RANGE PACKAGE CODE ble range. 24 Thin QFN The MAX8716 is available in a 24-pin thin QFN pack-


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MAX8716-MAX8757.pdf Datasheet