L7983PUR

L7983PUR is an adjustable VOUT step-down monolithic DC-DC switching voltage regulator based on a peak current mode, constant frequency architecture, with integrated control loop compensation network. The main internal blocks can be summarized as follows: power section, including high-side and low-side power MOSFETs, gate driver and current sensing. Control loop blocks, including the trans-conductor (gm), the PWM comparator and the slope generator. The control logic for low noise mode (LNM) or low consumption mode (LCM) operation selection and synchronization to external clock. The frequency programming circuitry for device configuration. Input voltage monitor and enable circuit with soft-start management and RST output signal for sequencing programming. The low drop-out linear regulator (LDO) and switchover block to improve the power conversion efficiency. The fault management, including the overcurrent (OCP), the overvoltage (OVP) and overtemperature (OTP) protection.

• Operating input voltage range from 3.5V to 60V
• Adjustable Vout from 0.85V to VIN
• 300mA DC output current
• Dynamic low consumption mode to low noise mode selection
• 200KHz to 2.2MHz programmable switching frequency
• Optional spread spectrum (dithering), Internal soft-start, enable/adjustable UVLO threshold
• Synchronization to external clock, internal compensation network, internal current limiting
• Overvoltage protection, output voltage sequencing and thermal shutdown
• Maximum duty cycle is 100 %
• 10-WFDFN Exposed Pad package and operating temperature range from -40°C to 150°C (TJ)