MAXIM MAX16993AGJD/VY+

The MAX16993 power-management integrated circuit (PMIC) is a 2.1MHz, multichannel, DC-DC converter designed for automotive applications. The device integrates three supplies in a small footprint. The device includes one high-voltage step-down controller (OUT1) designed to run directly from a car battery and two low-voltage step-down converters (OUT2/OUT3) cascaded from OUT1. Under no-load conditions, the MAX16993 consumes only 30μA of quiescent current, making it ideal for automotive applications. The high-voltage synchronous step-down DC-DC controller (OUT1) operates from a voltage up to 36V continuous and is protected from load-dump transients up to 42V. There is a pin-selectable frequency option of either 2.1MHz or a factory-set frequency for 1.05MHz, 525kHz, 420kHz, or 350kHz. The low-voltage, synchronous step-down DC-DC converters run directly from OUT1 and can supply output currents up to 3A. The device provides a spread-spectrum enable input (SSEN) to provide quick improvement in electromagnetic interference when needed. There is also a SYNC input for providing an input to synchronize to an external clock source. The device includes overtemperature shutdown and overcurrent limiting. The device also includes individual RESET_ outputs and individual enable inputs. The individual RESET_ outputs provide voltage monitoring for all output channels. The MAX16993 is available in a 32-pin TQFN/side-wettable QFND-EP package and is specified for operation over the -40°C to +125°C automotive temperature range.

• High-Efficiency Voltage DC-DC Controller Saves Power
• 3.5V to 36V Operating Supply Voltage
• Output Voltage: Pin Selectable, Fixed, or Resistor-Divider Adjustable
• 350kHz to 2.1MHz Operation
• 30μA Quiescent Current with DC-DC Controller Enabled
• Dual 2.1MHz DC-DC Converters with Integrated FETs Save Space
• OUT2 and OUT3 are Cascaded from OUT1, Improving Efficiency
• 3A Integrated FETs
• 0.8V to 3.95V Output Voltage
• Fixed or Resistor-Divider-Adjustable Output Voltage
• 180° Out-of-Phase Operation
• Robust for the Automotive Environment
• Current-Mode Architecture with Forced-PWM and Skip Modes of Operation
• Frequency Synchronization Input/Output Reduces System Noise
• Individual Enable Inputs and RESET_ Outputs
• Overtemperature and Short-Circuit Protection
• AECQ-100 Qualified 32-Pin TQFN-EP (5mm×5mm×0.75mm) and Side-Wettable QFND-EP (5mm×5mm×0.8mm)
• -40°C to +125°C Operating Temperature Range

• Automotive
• Industrial