LM26420XSQ/NOPB .

The LM26420XSQ/NOPB is a synchronous step-down DC-DC Regulator has the ability to drive two 2A loads with an internal 75mΩ PMOS top switch and an internal 50mΩ NMOS bottom switch using state-of-the-art BICMOS technology results in the best power density available. The world-class control circuitry allow on times as low as 30 ns, thus supporting exceptionally high-frequency conversion over the entire 3-V to 5.5V input operating range down to the minimum output voltage of 0.8V. Although the operating frequency is high, efficiencies up to 93% are easy to achieve. External shutdown is included, featuring an ultra-low standby current. The LM26420 utilizes current-mode control and internal compensation to provide high performance regulation over a wide range of operating conditions. It supplies a regulated output voltage by switching the internal PMOS and NMOS switches at constant frequency and variable duty cycle.

• Compliant with CISPR25 class 5 conducted emissions
• Internal soft-start
• Independent power good and precision enable for each output
• Current mode, PWM operation
• Thermal shutdown
• Overvoltage protection
• Start-up into pre-biased output loads
• Regulators are 180° out of phase
• Green product and no Sb/Br

Applications

Automotive, Power Management, Communications & Networking