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MAX16936RATEA Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX16936RATEA Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 17 page MAX16936 36V, 220kHz to 2.2MHz Step-Down Converter with 28µA Quiescent Current General Description The MAX16936 is a 2.5A current-mode step-down con- verter with integrated high-side and low-side MOSFETs designed to operate with an external Schottky diode for better efficiency. The low-side MOSFET enables fixed-frequency forced-PWM (FPWM) operation under light-load applications. The device operates with input voltages from 3.5V to 36V, while using only 28FA qui- escent current at no load. The switching frequency is resistor programmable from 220kHz to 2.2MHz and can be synchronized to an external clock. The MAX16936’s output voltage is available as 5V/3.3V fixed or adjustable from 1V to 10V. The wide input voltage range along with its ability to operate at 98% duty cycle during undervoltage transients make the MAX16936 ideal for automotive and industrial applications. Under light-load applications, the FSYNC logic input allows the MAX16936 to either operate in skip mode for reduced current consumption or fixed-frequency FPWM mode to eliminate frequency variation to minimize EMI. Fixed-frequency FPWM mode is extremely useful for power supplies designed for RF transceivers where tight emission control is necessary. Protection features include cycle-by-cycle current limit and thermal shutdown with automatic recovery. Additional features include a power- good monitor to ease power-supply sequencing and a 180N out-of-phase clock output relative to the internal oscillator at SYNCOUT to create cascaded power sup- plies with multiple MAX16936s. The MAX16936 operates over the -40NC to +125NC automotive temperature range and is available in 16-pin TSSOP-EP and 5mm x 5mm, 16-pin TQFN-EP packages. Features S Wide 3.5V to 36V Input Voltage Range S 42V Load Dump Protection S Enhanced Current-Mode Control Architecture S Fixed Output Voltage with ±2% Accuracy (5V/3.3V) or Externally Resistor Adjustable (1V to 10V) S 220kHz to 2.2MHz Switching Frequency with Three Operation Modes 28µA Ultra-Low Quiescent Current Skip Mode Forced Fixed-Frequency Operation External Frequency Synchronization S Spread-Spectrum Frequency Modulation S Automatic LX Slew Rate Adjustment for Optimum Efficiency Across Operating Frequency Range S 180° Out-of-Phase Clock Output at SYNCOUT S Low-BOM-Count Current-Mode Control Architecture S Power-Good Output S Enable Input Compatible from 3.3V Logic Level to 42V S Thermal Shutdown Protection S -40°C to +125°C Automotive Temperature Range S AEC-Q100 Qualified Applications Point of Load Applications Distributed DC Power Systems Navigation and Radio Head Units 19-6626; Rev 1; 4/13 Ordering Information/Selector Guide appears at end of data sheet. Typical Application Circuit appears at end of data sheet. For related parts and recommended products to use with this part, refer to: www.maximintegrated.com/MAX16936.related For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com. |
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