L6911C is a step-down converter chip introduced by STMicroelectronics. The chip supports a supply voltage of 5V to 12V, a maximum drive current of 1.3A, and an output voltage that can be adjusted through a 5-bit programmable voltage. The output accuracy is ±1%. The chip also supports soft start and inhibit functions and can be widely used in advanced microprocessor core, distributed power supply and high power DC-DC regulators.
The L6911C is an integrated circuit designed to provide high-performance DC/DC conversion for high-current microprocessors. It features a precise 5-bit digital-to-analog converter (DAC) that allows the output voltage to be adjusted from 1.30V to 2.05V with 50mV steps, or from 2.10V to 3.50V with 100mV steps. The device operates with an operating supply voltage (Vcc) ranging from 5V to 12V and utilizes voltage-mode PWM control.
| Operating Supply Voltage | 5V to 12V |
|---|---|
| Gate Current Capability | Up to 1.3A |
| Output Voltage Range (Low) | 1.3V to 2.05V |
| Output Voltage Range (High) | 2.1V to 3.5V |
| Output Voltage Accuracy | ±1% |
| Internal Oscillator Frequency | 200kHz |
| Adjustable Frequency Range | 50kHz to 1MHz |
| Package Type | S020 |
The device ensures excellent output accuracy of ±1% over line and temperature variations.
Yes, the oscillator is externally adjustable from 50kHz to 1MHz using an external resistor.
The output voltage is programmed using a TTL-compatible 5-bit programmable output via VID pins.