LM25576MHX

• Input 3 - 20V voltage range
• Dual 2A outputs
• The output voltage drops to 0.6V
• Internal compensation
• PWM frequency of 500kHz
• Separate enable pins
• Separate soft-start pins
• Frequency foldback protection
• 175mΩ NMOS switch
• Integrated bootstrap diodes
• Overcurrent protection
• ETSSOP and LLP packages
• Thermal shutdown

illustrate

The LM26400Y is a monolithic, dual-output PWM step-down DC/DC in a 16-pin LLP package or a heat-resistant enhanced ETSSOP regulated fixed frequency. With a minimum number of external elements and internal loop compensation, LM26400Y easy to use. Capable of driving an internal 175mΩNMOS 2A load switch is the result of advanced equipment designed with high power density, state-of-the-art 0.5 micron BiCMOS technology. The world-class control circuitry allows for a low on-time of up to 40 nanoseconds, supporting high frequency conversion over the entire input range of 3V to 20V with an output voltage of only 0.6V. The LM26400Y features peak current mode control and internal compensation for a wide range of high-performance regulation of line and load conditions. The switching frequency is set internally to 500kHz, which is optimal for a wide range of applications in terms of scale and heat trade-offs. Given an asynchronous architecture, an efficiency of more than 90% is easily achievable. External shutdown is included to enable independent on-turn and shut-off of two channels. Other features include programmable soft-start circuitry to reduce inrush current, pulse through pulse current limiting and frequency foldback, integrated bootstrap structure, and thermal shutdown.

apply

• DTV - LCD
• Stb
• XDSL
• Car
• Computer peripherals
• Industrial control
• Point of load