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TPS51120

The Texas Instruments TPS51120 is a dual synchronous step-down controller designed for notebook system power. It operates from a 4.5V to 28V input voltage.

✓ Total Stock: 68,476 pcs

$ Price Range: $0.78

TPS51120 Available from 2 distributors

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Romaks Technologies ✓ Non-Authorised Inventory information	64,571 pcs On Request	64571 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Optech Co.,Limited ✓ Non-Authorised Inventory information	3,905 pcs On Request	3905 pcs	On Request	1	On Request	On Request	18+	On Request	On Request

TPS51120 Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	Texas Instruments

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TPS51120 Description

Short technical summary and product information.

The Texas Instruments TPS51120 is a highly sophisticated dual, synchronous step-down controller. It is designed to run directly off a three- or four-cell Li-ion battery and provide high-power 5V and/or 3.3V standby regulation for downstream circuitry in a notebook computer system.

This controller features a supply input voltage range of 4.5 V to 28 V. It supports dual outputs with one channel providing 5V/6A and the other 3.3V/6A. Additionally, it includes two 100-mA bootstrapped standby regulators with independent enables, capable of providing 5V and 3.3V outputs.

The TPS51120 offers selectable D-CAP mode for fast transient response (less than 100 ns) and selectable low ripple current mode. It boasts less than 1% internal reference accuracy and selectable PWM-only/Auto-skip modes. The device utilizes low-side RDS(on) loss-less current sensing and has an RSENSE accurate current sense option. It also features internal soft-start, integrated VOUT discharge transistors, and an integrated 2-V reference.

Packaged in a 32-pin VQFN (RHB) measuring 5 mm x 5 mm, the TPS51120 is specified for operation in ambient temperatures from -40°C to 85°C. Its adaptive gate drivers with integrated boost diode and powergood for each channel with a delay timer enhance its functionality.

TPS51120 Quick Information

Product Type: DC DC Switching Controller

Canonical Name: TPS51120 Dual Synchronous Step-Down Controller

Subcategory: Power Management

TPS51120 Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

TPS51120 Estimated Pricing

Qty	Low	High
1+	$0.78	$0.78

Estimated market price range - modelled values for guidance only, not live distributor offers.

TPS51120 Features

Dual synchronous step-down controller.
Input voltage range 4.5V to 28V.
5V/6A and 3.3V/6A main outputs.
100mA standby regulators included.
Fast transient response under 100 ns.

TPS51120 Applications

Notebook system power supply regulation
Dual output 5V and 3.3V rails
Standby power management in laptops
Battery-powered portable device power

TPS51120 FAQs

6 frequently asked questions generated from this part’s specifications.

What is the input voltage range for the TPS51120?

The input voltage range is 4.5 V to 28 V.

What are the main output voltages and currents for the TPS51120?

The TPS51120 provides a 5V/6A output and a 3.3V/6A output.

What are the specifications for the standby regulators?

The device includes two 100-mA bootstrapped standby regulators, providing 5V and 3.3V outputs.

What is the operating temperature range of the TPS51120?

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

What package type is the TPS51120 available in?

The TPS51120 is available in a 32-pin VQFN (RHB) package with a body size of 5 mm x 5 mm.

What is the typical quiescent current of the TPS51120?

The typical quiescent current is 0.00075 A.