Analog Devices Inc. LTC3376 Buck DC-DC Converters with Power Stages
Analog Devices Inc. LTC3376 20V, 4-Channel Buck DC-DC Converters with 8x Configurable 1.5A Power Stages are highly flexible multi-output power supply ICs. The LTC3376 consists of four synchronous buck converters configured to share eight 1.5A power stages, powered from independent 3V to 20V inputs. The LTC3376 DC/DCs are assigned to one of fifteen power configurations via pin strappable CFG0 to CFG3 pins.
Ceramic capacitors are integrated into the package on the LTC3376, saving PCB space. The common buck switching frequency has options for programming, including an external resistor, synchronized to an external oscillator, or set to a default internal 2MHz clock.
Current monitors allow for external monitoring of each buck power stage load. The EXTVCC pin allows for the internal circuitry to run from a 3V to 5.5V rail, resulting in improved efficiency. The LTC3376 Buck DC/DC converters are available in a 64-lead 7mm × 7mm BGA (0.8mm ball pitch).
Features
- Wide VIN Range: 3V to 20V
- Wide VOUT Range: 0.4V to 0.83VIN
- 8×1.5A Buck Power Stages Configurable as 1 to 4 Output Channels
- 15 Unique Pin Selectable Output Configurations (1.5A to 12A per Channel)
- Internal Boost Capacitors for Reduced PCB Space
- No Load IQ 27µA 1 Buck Enabled; 42µA All Bucks Enabled
- 1% VOUT Accuracy on All Channels
- Peak Current Mode Control (Burst Mode® Operation/Forced Continuous)
- Precision RUN Inputs, Individual PGOOD Outputs for Power Sequencing
- 1MHz to 3MHz Frequency (RT Programmable, PLL SYNC, or Internal 2MHz Oscillator)
- TEMP Pin Output Indicates Die Temperature
- Output Current Monitors
- Differential Output Sense
Applications
- Telecom/Industrial
- 12V Distributed Power Systems
Associated Development Tool
Analog Devices Inc. LTC3376 Demo Board DC2966A
Shows the LTC3376 4-channel configurable buck regulator operating in configuration CFG [3:0] = 0000.
Associated Products
Analog Devices Inc. LTC3374/3375 8-Ch Parallelable 1A Buck DC/DCs
Highly integrated, multioutput power management solution.
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