The LTC7124EUDDPBF is a dual channel, 3.5A per output, high efficiency monolithic step-down regulator capable of operating from input supplies up to 17V. The programmable switching frequency ranges from 500kHz to 4MHz with a ±25% external clock synchronization capability around the programmed frequency. The regulator features ultralow quiescent current for high efficiency over a wide VOUT range.
The step-down regulator operates from an input voltage range of 3.1V to 17V and provides an adjustable output range from 0.6V to 99% of VIN while delivering up to 3.5A of output current per channel. A user selectable mode input is provided to allow the user to trade off output ripple for light load efficiency; Burst Mode® operation provides the highest efficiency at light loads, while forced continuous operation provides the lowest output ripple. The LTC7124EUDDPBF includes spread spectrum modulation for low radiated and conductive noise. The LTC7124EUDDPBF is offered in a thermally enhanced, low profile 24-lead 3mm × 5mm QFN package.
Feature
- Wide VIN Range: 3.1V to 17V
- Wide VOUT Range: 0.6V to 99% VIN
- Dual Step-Down Outputs: 3.5A Per Channel
- Integrated 80mΩ/40mΩ N-Channel MOSFETs. Provide Up to 95% Efficiency
- No-Load IQ < 8μA with Both Channels Enabled; IQ < 5.5μA with Only One Channel Enabled
- Programmable Frequency (500kHz to 4MHz) with ±25% Frequency Synchronization Range
- Configurable for a Two Phase Single Output at Up to 7A
- ±1.0% Output Voltage Accuracy
- Current Mode Operation for Excellent Line and Load
- Transient Response
- Internal or Programmable External Loop Compensation
- Thermally Enhanced 3mm × 5mm QFN-24 Package
Applications
- Battery Powered Systems
- Point-of-Load Supplies
- Portable Instruments
- Handheld Scanners
