LM2694 Datasheet | Texas Instruments

FEATURES - 2 Integrated N-Channel Buck Switch - Integrated Start-Up Regulator - Input Voltage Range: 8V to 30V - No Loop pensation Required - Ultra-Fast Transient Response - Operating Frequency Remains Constant with Load Current and Input Voltage Variations - Maximum Duty Cycle Limited During Start-Up - Adjustable Output Voltage - Valley Current Limit At 0.6A - Maximum Switching Frequency: 1 MHz - Precision Internal Reference - Low Bias Current - Highly Efficient Operation - Thermal Shutdown DESCRIPTION The LM2694 Step Down Switching Regulator features all of the functions needed to implement a low cost, efficient, buck bias regulator capable of supplying 0.6A to the load. This buck regulator contains an NChannel Buck Switch, and is available in the 3 x 3 thermally enhanced WSON-10 package and a TSSOP-14 package. The feedback regulation scheme requires no loop pensation, results in fast load transient response, and simplifies circuit implementation. The operating frequency remains constant with line and load variations due to the inverse relationship between the input voltage and the on-time. The valley current limit results in a smooth transition from constant voltage to constant current mode when current limit is detected, reducing the frequency and output voltage, without the use of foldback. Additional features include: VCC undervoltage lockout, thermal shutdown, gate drive undervoltage lockout, and maximum duty cycle limiter. TYPICAL APPLICATIONS - High Efficiency Point-Of-Load (POL) Regulator - Non-Isolated Telemunication Buck Regulator - Secondary High Voltage Post Regulator Package - WSON-10 (3 mm x 3 mm) w/Exposed Pad - TSSOP-14 Basic Step Down Regulator 8V - 30V Input C1 SHUTDOWN RON/SD SW ISEN C6 SGND C3 C4...