(China (Mainland))
Product Summary
The MAX8744ETJ is a high-efficiency, quad-output, main power-supply controller for notebook computers. It is intended for main 5V/3.3V power generation in battery-powered systems. Fixed-frequency operation with optimal interleaving minimizes input ripple current from the lowest input voltages up to the 26V maximum input. Optimal 40/60 interleaving allows the input voltage to go down to 8.3V before duty-cycle overlap occurs, compared to 180° out-of-phase regulators where the duty-cycle overlap occurs when the input drops below 10V. Its applications include Main Power Supplies, 2 to 4 Li+ Cell Battery-Powered Devices, Notebook and Subnotebook Computers, PDAs and Mobile Communicators.
Parametrics
MAX8744ETJ absolute maximum ratings: (1)continuous power dissipation: 2459mW; (2)outa shunt current: 30mA; (3)DRVA current: 30mA; (4)junction temperature: 150℃; (5)storage temperature range: -60 to 150℃; (6)lead temperature: 300℃.
Features
MAX8744ETJ features: (1)Fixed-Frequency, Current-Mode Control; (2)40/60 Optimal Interleaving; (3)Internal BST Switches; (4)Internal 5V, 100mA Linear Regulator; (5)Auxiliary Linear-Regulator Driver (12V or Adjustable Down to 1V); (6)Undervoltage and Thermal-Fault Protection; (7)Overvoltage-Fault Protection (MAX8744 Only); (8)6V to 26V Input Range; (9)2V ±0.75% Reference Output.
Diagrams
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 MAX8744ETJ+ |
Maxim Integrated Products |
Current Mode PWM Controllers Quad-Out Main Power Supply Controller |
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MAX8744ETJ+T |
Maxim Integrated Products |
Current & Power Monitors & Regulators Quad-Out Main Power Supply Controller |
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