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TPS84259
  • TPS84259
  • TPS84259
  • TPS84259

TPS84259

ACTIVE

4.5V to 40V, 2A up to 15W Negative-Output Integrated Power Solution

Texas Instruments TPS84259 Product Info

1 April 2026 5

Parameters

Rating

Catalog

Topology

Buck-Boost, Inverting

Iout (max) (A)

2

Vin (max) (V)

40

Vin (min) (V)

4.5

Vout (max) (V)

-17

Vout (min) (V)

-3

Features

Over Current Protection

Operating temperature range (°C)

-40 to 85

Type

Converter

Switching frequency (min) (kHz)

700

Switching frequency (max) (kHz)

900

Package

B1QFN (RKG)-41-99 mm² 11 x 9

Features

  • Complete Integrated Power Solution Allows
    Small Footprint, Low-Profile Design
  • Wide Input-Voltage Range from 4.5 V to 40 V
  • Output Adjustable from  –3 V to –17 V
  • Supplies up to 2-A of Output Current
  • 45-V Surge Capability
  • Synchronizes to an External Clock
  • Adjustable Slow Start
  • Programmable Undervoltage Lockout (UVLO)
  • Output Overcurrent Protection
  • Overtemperature Protection
  • Operating Temperature Range: –40°C to +85°C
  • Enhanced Thermal Performance: 14°C/W
  • Meets EN55022 Class B Emissions
  • For Design Help visit http://www.ti.com/TPS84259
  • Complete Integrated Power Solution Allows
    Small Footprint, Low-Profile Design
  • Wide Input-Voltage Range from 4.5 V to 40 V
  • Output Adjustable from  –3 V to –17 V
  • Supplies up to 2-A of Output Current
  • 45-V Surge Capability
  • Synchronizes to an External Clock
  • Adjustable Slow Start
  • Programmable Undervoltage Lockout (UVLO)
  • Output Overcurrent Protection
  • Overtemperature Protection
  • Operating Temperature Range: –40°C to +85°C
  • Enhanced Thermal Performance: 14°C/W
  • Meets EN55022 Class B Emissions
  • For Design Help visit http://www.ti.com/TPS84259

Description

The TPS84259 is an easy-to-use negative output voltage power module that combines a 15-W DC/DC converter with an inductor, and passives into a low-profile QFN package. This total power solution allows as few as five external components and eliminates the loop compensation and magnetics part selection process.

The 9 × 11 × 2.8 mm QFN package is easy to solder onto a printed circuit board. Its compact design also contains fewer components and possesses excellent power dissipation capability. The TPS84259 offers the flexibility and the feature-set of a discrete design and is ideal for powering a wide range of ICs and analog circuits requiring a negative output voltage. Advanced packaging technology affords a robust and reliable power solution, compatible with standard QFN mounting and testing techniques.

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