TLS4120D0EPV33XUMA1

The OPTIREG switcher TLS4120D0EPV33 is a 2.8 MHz synchronous step down regulator especially designed for automotive applications. The device has a current capability of 2 A, fixed 3.3 V output voltage and a feedback voltage accuracy of ±1.5% in PWM mode. The integrated power stages, soft-start feature and integrated compensation network reduce the required amount of external components and thus system costs and board space. The wide input voltage range and a 100% duty cycle operation mode make the device suitable for battery cranking scenarios in automotive applications. The wide switching frequency range allows the selection of appropriate coils and capacitors. The switching frequency can be synchronized to an external clock signal. Spread spectrum frequency modulation can be activated to improve the EMI performance in PWM operation. The device offers low current consumption in PFM mode at light loads to optimize efficiency. The TLS4120D0EPV33 can detect undervoltage and overvoltage conditions of the output voltage and indicates this with the reset output signal. Overcurrent and overload protections avoid excessive current to protect the device during short circuit conditions at the buck converter output. The integrated thermal shutdown feature protects the device from overheating. The enhanced PG-TSDSO-14 exposed pad package offers advantageous thermal performance in the application.

Applications

• Body
• ADAS
• Infotainment, telematics
• Navigation

Key features

• 2 A step down regulator
• Input voltage from 3.7 V to 35 V
• 3.3 V output voltage
• ±1.5% feedback voltage accuracy in PWM mode
• Ultra low current consumption 31 μA
• Integrated high side and low side power MOSFETs
• Peak current mode PWM regulation
• Light load PFM mode with improved efficiency
• Switching frequency range: 320 kHz to 560 kHz or 1.6 MHz to 2.8 MHz
• 100% duty cycle operation
• Synchronization input
• Spread spectrum frequency modulation for improved EMI performance
• Soft-start function
• Integrated compensation network
• Output discharge function in disabled state
• Ultra low current consumption in disabled state (typically 1 μA)
• Undervoltage monitoring
• Overvoltage monitoring
• Overcurrent protection and overload protection
• Input undervoltage shutdown
• Wide temperature range Tj = -40°C to 150°C
• Green Product (RoHS compliant)