MAX16922

19-5039; Rev 0; 10/09 KIT ATION EVALU E L B AVAILA 2.2MHz, Dual, Step-Down DC-DC Converters, Dual LDOs, and RESET General Description Features o 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 o 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 o LDO Linear Regulators OUT3: 1.0V to 4.15V at 300mA OUT4: 1.0V to 4.15V at 300mA Separate Inputs for Increased Efficiency o Enable Input o RESET Output Monitoring on OUT1 and OUT2 o Overtemperature and Short-Circuit Protection o Available in 5mm x 5mm x 0.8mm, 20-Pin TQFN-EP 4.5mm x 6.5mm, 20-Pin TSSOP-EP MAX16922 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 (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 DCDC converter (OUT2) runs from a voltage up to...