- The input voltage range is 3.0V to 5.5V
- The output voltage range is 0.8V to 4.5V
- Each output current value is 2.0A output
- High switching frequency
- 0.55MHz（LM26420Y）
- 75mΩ PMOS switch
- 50mΩ NMOS switch
- 0.8V, 1.5% internal voltage reference
- Internal soft start
- Each output is independently powered
- Enabled for each output precision independently
- Current mode, PWM operation
- Thermal shutdown
- Overvoltage protection
- Start into the pre-biased output load
- The output is 180° out of phase
illustrate
The LM26420 regulator is a monolithic, high-frequency, dual PWM step-down DC/DC 16-pin LLP and 20-pin eTSSOP package conversion. It offers all the positive features, providing local DC/DC fast transient response and minimal PCB area for precisely regulated conversion. LM26420 with a minimum number of external components is ease of use. The driver's ability to switch on top of its internal 75mΩ PMOS tube and an internal 50mΩ NMOS switch on the bottom of the state of the state at the highest power density available for a state-of-the-art 0.5 μm BiCMOS technology binary value 2.0A load. The world-class control circuitry allows for as low as 30ns, thus supporting the entire abnormal input voltage range of 0.8V to the lowest output voltage and high frequency conversion from 0.8V. The switching frequency is set internally to 550 kHz or 2.2 MHz, allowing for very small surface-mount inductors and capacitors. Although the operating frequency is high, the efficiency of up to 93% is easy to achieve. External shutdown is included with ultra-low standby current. The LM26420 uses current mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Other features include internal soft-start circuitry to reduce inrush current, pulse through pulse current limit, thermal shutdown, power good indicator, precision enable, output overvoltage protection.
apply
- Local 5V to core step-down converter
- At the heart of the hard drive
- Stb
- USB-powered devices
- DSL modem
- The core power supply and I/O voltage for FPGAs, CPLDs and ASICs
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