explain
LM25575 is an easy-to-use voltage regulator that allows design engineers to design and optimize reliable power supplies with minimal components. The working input voltage range of LM25575 is 6V to 42V, and it integrates a 330m Ω N-channel MOSFET that can provide a continuous output current of 1.5A. This voltage regulator adopts a simulated current mode architecture, which combines inherent line stability, excellent load transient response, and simplified loop compensation characteristics. There is no low duty cycle limitation commonly seen in current mode voltage regulators. The working frequency can be adjusted within the range of 50kHz to 1MHz to achieve size and efficiency optimization. To reduce EMI, multiple ICs of the LM (2) 557x series can achieve self synchronization or synchronization to external clocks through frequency synchronization pins.
LM25575 features cycle by cycle current limitation, short circuit protection, thermal shutdown, and remote shutdown to ensure robustness. The device adopts a power consumption enhanced HTSSOP-16 package and is equipped with exposed chip connection pads for heat dissipation.
LM25575 is subject to a complete set of WEBENCH ® Online design tool support.
characteristic
Integrated 42V, 330m Ω N-channel MOSFET
Ultra wide input voltage range from 6V to 42V
Adjustable output voltage as low as 1.225V
1.5% feedback benchmark accuracy
A single resistor can be used to adjust the operating frequency between 50kHz and 1MHz
• Master slave frequency synchronization
Adjustable soft start
Simulated current mode control architecture
Wide bandwidth error amplifier
• Built in protection
• HTSSOP-16EP (exposed solder pads)
• Use LM25575 and leverage WEBENCH ® Power Designer Create Custom Design
application
• Industry
Simplified application circuit schematic diagram
