NV890231MWTXGEVB ON Semiconductor

NCV890231GEVB NCV890231 Automotive Grade High-Frequency Buck Regulator Evaluation Board User s Manual NCV890231GEVB Table 1. DEMONSTRATION BOARD TERMINALS Terminal Function VIN Positive dc input voltage GND Common dc return VOUT Regulated dc output voltage EN Enable input SYNCI Input for external clock synchronization SYNCO Output for synchronizing other boards Table 2. ABSOLUTE MAXIMUM RATINGS (Voltages are with respect to GND) Rating Value Units Dc supply voltage (VIN, EN) -0.3 to 45 V V Dc supply voltage (SYNCI) -0.3 to 6 V V Junction Temperature (NCV890231) -40 to 150 C Ambient temperature (Demo Board) -40 to 85 C Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. Table 3. ELECTRICAL CHARACTERISTICS (T = 25C, 4.5 V V 40 V, V = 2 V, V = 3.3 V, 0 I 2.0 A, unless otherwise specified) A IN EN OUT OUT Characteristics Conditions Typical Value Units Regulation Output Voltage 3.30 V Voltage Accuracy 4 % Line Regulation I = 1.0 A 0.12 % OUT Load Regulation V = 13.2 V 0.03 % IN Switching Switching Frequency 2.0 MHz Soft-start Time 1.4 ms SYNCI Frequency range 1.8 to 2.5 MHz Current Limit Average Current Limit V = 6 to 18 V 1.8 A IN Cycle-by-cycle Current Limit 2.45 A Protections Input Undervoltage Lockout (UVLO) V decreasing 4.2 V IN Thermal Shutdown T increasing 170 C A