Texas Instruments Adjustable DC-DC Buck Step Down Regulator 3A
Texas Instruments adjustable DC-DC buck step-down regulator, 3A continuous output, 4.2V to 28V input and 800mV to 24V output range.
Texas Instruments Adjustable DC-DC Buck Step Down Regulator 3A provides 3A continuous output current from a wide 4.2V to 28V input, with an adjustable output from 800mV to 24V. It is a high-performance, synchronous monolithic buck (step-down) DC-DC converter designed for efficiency and compactness in power management applications.
Overview
By integrating the MOSFETs and using fixed-frequency current mode control, this regulator reduces the external component count, supporting smaller and more streamlined designs. The integrated 128/84mΩ MOSFETs and minimal external part requirements make it suitable for space-constrained applications.
Key Features
- High efficiency operation: low-resistance MOSFETs, a low quiescent current and a pulse-skipping mode that supports performance during light load conditions.
- Comprehensive protection: cycle-by-cycle current limiting, enhanced with low-side sourcing and sinking current limits, hiccup mode protection for sustained faults, thermal shutdown and overvoltage transient protection.
- Accurate regulation: 1.5% voltage reference accuracy over temperature, with support for monotonic start-up into pre-biased outputs.
- Power-saving mode: an enable pin allows shutdown mode, reducing supply current to 2µA.
- Power good indicator: supports system sequencing and monitoring.
- Environmentally conscious: manufactured without antimony or bromine.
Specifications
- Input voltage range: 4.2V to 28V DC
- Output voltage range: 800mV to 24V DC (user-adjustable)
- Output current: 3A continuous
- Dimensions (W x D x H): 3.3 x 1.5 x 4.3
- Weight: 22.68 gm
Applications
Suitable for modern power management designs and space-constrained applications requiring an adjustable step-down voltage regulator. Choose this regulator when you need an adjustable 3A DC-DC buck converter with a 4.2V to 28V input range.
- Power management applications
- Space-constrained designs
- System sequencing and monitoring
- Input Voltage Range: 4.2V to 28V DC
- Output Voltage Range: 800mV to 24V DC (user-adjustable)
- Output Current: 3A continuous
- Topology: Synchronous monolithic buck (step-down)
- Switching Control: Fixed-frequency current mode
- Integrated MOSFET Resistance: 128/84mΩ
- Voltage Reference Accuracy: 1.5% over temperature
- Shutdown Supply Current: 2µA
- Special Feature: Power good indicator
- Special Feature: Pulse-skipping mode for light load operation
- Special Feature: Monotonic start-up into pre-biased outputs
- Special Feature: Cycle-by-cycle current limiting with hiccup mode protection
- Special Feature: Thermal shutdown and overvoltage transient protection
- Environmental: Manufactured without antimony or bromine
- Width: 3.3
- Depth: 1.5
- Height: 4.3
- Weight: 22.68 gm
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