Current Mode Step-Down Regulators

The BD91x Series step-down switching regulators combine ROHM’s proprietary SLLM™ (Simple Light Load Mode) technology with current-mode PWM control to provide exceptional regulation and high efficiency at both low- and high-current load conditions.

Features

• Single and dual channel outputs
• Output current ratings up to 4.0A
• Fixed and variable output voltage (set by resistor selection)
• Output voltage accuracy of ±1.5 / ±2.0%
• BiCMOS topology minimizes parts count and power consumption
• Current sense / feedback loop for fast response to load changes
• Small wafer-level packages and small form factor packages optimize pc-board utilization