Overview
Features and Benefits
- 1.2A High-Efficiency 2.2MHz DC-DC Converter
- 3.7V to 28V Operating Supply Voltage
- 45V Load-Dump Protection
- Output Voltage: 3.0V to 5.5V
- 600mA High-Efficiency 2.2MHz DC-DC Converter
- 2.7V to 5.5V Supply Voltage
- Output Voltage: 1.0V to 3.9V
- 180° Out-of-Phase Operation
- Forced-PWM and Auto-PWM Modes
- LDO Linear Regulators
- OUT3: 1.0V to 4.15V at 300mA
- OUT4: 1.0V to 4.15V at 300mA
- Separate Inputs for Increased Efficiency
- Enable Input
- Active-Low RESET Output Monitoring on OUT1 and OUT2
- Overtemperature and Short-Circuit Protection
- Available in
- 5mm × 5mm × 0.8mm, 20-Pin TQFN-EP
- 4.5mm × 6.5mm, 20-Pin TSSOP-EP
Product Details
The MAX16922 power-management integrated circuit (PMIC) is designed for medium power-level automotive applications and integrates multiple supplies in a small footprint. The device includes one high-voltage stepdown converter (OUT1) and three low-voltage cascaded DC-DC converters (OUT2, OUT3, OUT4). OUT1 and OUT2 are step-down DC-DC converters, and OUT3/OUT4 are linear regulators. The device also includes a reset output (active-low RESET) and a high-voltage-compatible enable input (EN).
The 1.2A output high-efficiency, step-down DC-DC converter (OUT1) operates from a voltage up to 28V continuous and is protected from load-dump transients up to 45V. The 600mA output high-efficiency step-down DC-DC converter (OUT2) runs from a voltage up to 5.5V. The two 300mA LDO linear regulators offer low dropout of only 130mV (typ). The power-good active-low RESET output provides voltage monitoring for OUT1 and OUT2.
OUT1 and OUT2 use fast 2.2MHz PWM switching and small external components. The high-voltage converter (OUT1) enters skip mode automatically under light loads to prevent an overvoltage condition from occurring at the output. The low-voltage synchronous DC-DC converter (OUT2) can operate in forced-PWM mode to prevent any AM band interference or high-efficiency auto-PWM mode.
The MAX16922 includes overtemperature shutdown and overcurrent limiting. The device is designed to operate from -40°C to +125°C ambient temperature.
Applications
- Automotive
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.