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TPS51117 The Texas Instruments TPS51117 is a synchronous step-down buck controller designed for POL voltage regulation. It operates with an input voltage range of 1.8V to 28V and supports output voltages from 0.75V to 5.5V.
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TPS51117

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Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments TPS51117 is a synchronous step-down buck controller designed for POL voltage regulation. It operates with an input voltage range of 1.8V to 28V and supports output voltages from 0.75V to 5.5V.
✓ Total Stock: 412 pcs

TPS51117 Available from 1 distributor

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412 pcs
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TPS51117 Specifications Quick View

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TPS51117 Description

Short technical summary and product information.

The TPS51117 from Texas Instruments is a cost-effective, synchronous buck controller featuring D-CAP mode for ease of use and fast transient response. It is designed for POL voltage regulation in applications such as notebook computers, I/O supplies, and system power supplies.

 

This controller supports a wide input voltage range from 1.8V to 28V and can regulate output voltages from 0.75V to 5.5V. It offers selectable auto-skip or PWM-only operation for optimizing efficiency or reducing noise. Key electrical features include a typical shutdown current of 4.5 µA, adjustable switching frequency from 100 kHz to 550 kHz, and a 100-ns load step response.

 

The TPS51117 utilizes loss-less low-side RDS(on) sensing for overcurrent protection and includes integrated features like boost diode, OVP/UVP, thermal shutdown, and a powergood signal. It is available in 14-pin VQFN and TSSOP packages, specified for operation from -40°C to 85°C.

TPS51117 Quick Information

Product Type: DC DC Switching Controller
Canonical Name: TPS51117 Single Synchronous Step-Down Controller
Subcategory: Power Management ICs

TPS51117 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

TPS51117 Features

  • Synchronous buck controller with D-CAP mode.
  • Wide 1.8V to 28V input voltage range.
  • 0.75V to 5.5V output voltage range.
  • Adjustable switching frequency up to 550 kHz.
  • Low shutdown current of 4.5 µA.

TPS51117 Applications

  • Suitable for point-of-load power supplies.
  • Used in computing and consumer electronics.
  • Ideal for low-power portable devices.
  • Applicable in industrial control systems.

TPS51117 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the input voltage range of the TPS51117?

The input voltage range is 1.8 V to 28 V.

What is the output voltage range of the TPS51117?

The output voltage range is 0.75 V to 5.5 V.

What is the switching frequency range of the TPS51117?

The switching frequency is adjustable from 100 kHz to 550 kHz.

What is the operating temperature range of the TPS51117?

The operating temperature range is -40°C to 85°C.

What is the typical shutdown current of the TPS51117?

The typical shutdown current is 4.5 µA.

What is the load step response of the TPS51117?

The load step response is 100 ns.

What is the maximum duty cycle of the TPS51117?

The maximum duty cycle is 95%.

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