DIO61845ST6

The DIO61845 is a high-frequency, step-down, switching regulator with integrated high-side and low-side power MOSFET designed specifically for power meter applications. The DIO61845 can provide up to 0.6A output current and current mode control for fast loop response. The wide input range of 5V to 40V is suitable for various power meter step-down applications. Quiescent current of 10μA shutdown mode allows devices to be used for battery power supply applications. The DIO61845 uses high duty cycle and low dropout mode under the condition of low input voltage of power meter. The DIO61845 achieves high power conversion efficiency in a wide load range by reducing switching frequency under light load conditions to reduce switching and gate drive losses. Frequency folding prevents short circuit and inductance current from losing control during startup. Thermal shutdown provides reliable and fault-tolerant operation. The DIO61845 is packaged in SOT23-6.

Applications

• Power Meters Only

Key features

• Operating Input Range: 5V to 40V
• Adjustable Output Range: 0.8V to 0.95·VIN
• Operating Quiescent Current: 150μA
• Fixed Switching Frequency: 2MHz
• 400mΩ/200mΩ Internal Power MOSFETs
• Optimized for Power Meter Applications
• Satisfies 0.1% Output Voltage Ripple Requirements in Power Meter Applications
• Low Dropout Mode
• Light-Load Mode
• >90% Efficiency
• Dedicated Internal Compensation
• Stable with Ceramic/Electrolytic Output Capacitors
• Internal Soft Start (SS)
• Precision Current Limit without Current Sensing Resistor
• Guaranteed Industrial Temperature Range Limits
• Package: SOT23-6