MPQ3425 Datasheet | Monolithic Power Systems

DESCRIPTION The MPQ3425 is a current control mode, step-up converter with a 3.5A, 90mΩ internal MOSFET that provides fast transient response. It operates with an input voltage as low as 3.1V, and can generate up to 55V. The MPQ3425 features a configurable switching frequency of up to 1MHz for easy filtering and low noise. An external pensation pin allows the user to flexibly set loop dynamics and operates with small, low ESR ceramic output capacitors. The soft start feature provides a small inrush current and can be programmed with an external capacitor. Full protection features include under-voltage lockout (UVLO), current limiting, and thermal shutdown. The MPQ3425 is available in a low-profile QFN14 (3mmx4mm) package with an exposed pad. 3A, 55V Boost Converter with Programmable Switching Frequency, AEC-Q100 Qualified FEATURES - Wide 3.1V to 22V BIAS Supply Voltage Range - Wide 3V to 50V Input Voltage Range - 3.5A, 90mΩ, Power MOSFET - Output Voltage up to 55V - Programmable 300k Hz to 1MHz f SW - Programmable Under-Voltage Lockout (UVLO), Soft Start, UVLO Hysteresis - Micropower Shutdown <1μA - Thermal Shutdown OTP (160°C) - Available in QFN-14 (3mmx4mm) Package - Available in AEC-Q100 Grade 1 APPLICATIONS - Automotive Systems - Boost Converter and Single-Ended Primary- Inductance Converter (SEPIC) Topologies - Pre-Boost Applications - Microphones and Tuner Bias All MPS parts are lead-free and adhere to the Ro HS directive. For MPS green status, please visit the MPS website under Quality Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are registered trademarks of Monolithic Power Systems, Inc. or its subsidiaries. TYPICAL APPLICATION C1 22µF C4 1µF R5 35.7k 15µH L1 D1 22V VOUT 6 54 R2...