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Texas Instruments TPS61045DRBR — DC-DC Power Modules

TPS61045DRBR Step-Up Regulator, 1.8V–28V Output, Active

MPNTPS61045DRBR
Active

Texas Instruments TPS61045DRBR, Boost, Step-Up DC-DC Converter, Adjustable Output, 1.8V to 6V Input, 28V Max Output, 300mA Switch, 1MHz, -40°C to 85°C, 8-SON (3x3 mm).

$1.7200Ref. price · indicative, final on quote
Texas Instruments TPS61045DRBR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TPS61045DRBR specifications
ParameterValue
Output typeAdjustable
MountingSurface Mount
Voltage - input1.8V
Voltage - output28V
Voltage - output (Min (Fixed))1.8V
Output current300mA (Switch)
Frequency - switchingUp to 1MHz
I/O channels1
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
FunctionStep-Up
TopologyBoost
Case8-VDFN Exposed Pad
Output configurationPositive
Synchronous rectifierNo

Product details

Boost converter for high-voltage bias rails

The Texas Instruments TPS61045DRBR is a boost (step-up) DC-DC converter that takes a 1.8V to 6V input and delivers an adjustable output up to 28V. The single output is positive and adjustable — no synchronous rectifier, so the external Schottky diode selection matters for efficiency.

The input range is 1.8V to 6V, with a single adjustable output up to 28V. The 300 mA switch current limits the output power. At 28V output from 3.3V input, the maximum output current is roughly 300 mA × (3.3V / 28V) × efficiency — expect about 30 mA to 35 mA usable. If your load needs more, look at a boost with a higher switch rating or external FET.

Package and thermal handling for the rework bench

The TPS61045DRBR comes in an 8-VDFN exposed pad package (3x3 mm SON).

Frequently asked questions

What is the input voltage range for TPS61045DRBR?

Designers need to know if the part works with their supply voltage.

Where can I buy TPS61045DRBR in stock?

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What is the typical price of TPS61045DRBR?

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What is a suitable replacement for TPS61045DRBR if it is unavailable?

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Is TPS61045DRBR obsolete or active?

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What are the pin functions of TPS61045DRBR?

Design engineers need pinout for PCB layout.