LM3102-Q1 Datasheet | Texas Instruments

Features - 1 AEC-Q100-Qualified for Automotive Applications: - Temperature grade 1: - 40°C to +125°C, TA - Low ponent Count and Small Solution Size - Stable With Ceramic and Other Low-ESR Capacitors - No Loop pensation Required - High Efficiency at a Light Load by DCM Operation - Prebias Start-Up - Ultra-Fast Transient Response - Programmable Soft Start - Programmable Switching Frequency up to 1 MHz - Valley Current Limit - Output Overvoltage Protection - Precision Internal Reference for an Adjustable Output Voltage Down to 0.8 V - Thermal Shutdown - Key Specifications - Input Voltage Range 4.5 V to 42 V - 2.5-A Output Current - 0.8 V, ±1.5% Reference - Integrated Dual N-Channel Main and Synchronous MOSFETs - Thermally Enhanced 20-Pin HTSSOP Package - Create a Custom Design using the LM3102-Q1 with the WEBENCH® Power Designer 2 Applications - Automotive Body Electronics - Automotive Lighting - Automotive Infotainment and Telematics - General 12-V and 24-V Automotive DC/DC Conversion 3 Description The LM3102-Q1 synchronously rectified buck converter features all required functions to implement a highly efficient and cost-effective buck regulator. The device can supply 2.5 A to loads with an output voltage as low as 0.8 V. Dual N-channel synchronous MOSFET switches allow a low ponent count, thus reducing plexity and minimizing board size. Different from most other COT regulators, the LM3102-Q1 does not rely on output capacitor ESR for stability and is designed to work exceptionally well with ceramic and other very low-ESR output capacitors. The device requires no loop pensation, results in a fast load transient response and simple circuit implementation. The operating frequency remains nearly constant with line variations due to the inverse relationship between the input voltage and the ON-time. The operating frequency can be externally programmed up to 1 MHz. Protection features include VCC undervoltage lockout (UVLO), output overvoltage protection, thermal shutdown,...