Automotive 2.5V to 6V, 2.25MHz Fixed Frequency 1A Buck Converter in 2x2mm SON Package


Product details


Vin (Min) (V) 2.5 Vin (Max) (V) 6 Vout (Min) (V) 0.75 Vout (Max) (V) 6 Iout (Max) (A) 1 Iq (Typ) (uA) 15 Switching frequency (Min) (kHz) 2000 Switching frequency (Max) (kHz) 2500 Features Enable, Forced PWM, Light Load Efficiency, Synchronous Rectification Operating temperature range (C) -40 to 105 Rating Automotive Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

WSON (DRV) 6 4 mm² 2 x 2 open-in-new Find other Buck converters (integrated switch)


  • Qualified for Automotive Applications
  • Output Current up to 1000 mA
  • Input Voltage Range from 2.5 V to 6 V
  • High Efficiency Step Down Converter
  • Output Voltage Accuracy in PWM mode ±2.5%
  • Typical 15-µA Quiescent Current
  • 2.25 MHz Fixed Frequency Operation
  • Power Save Mode at Light Load Currents
  • 100% Duty Cycle for Lowest Dropout
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The TPS62590-Q1 device is a high-efficiency synchronous step-down converter, optimized for space constrained applications and very low quiescent current requirements. It provides up to 1000-mA output current from preregulated low voltage rails and consumes 15 µA (typical) in power-save mode.

With an input voltage range of 2.5 V to 6 V and an output voltage accuracy of 2.5%, the device is targeted to power a large variety of automotive applications.

The TPS62590-Q1 family operates at a 2.25-MHz fixed switching frequency and enters a power-save mode at light load currents to maintain a high efficiency over the entire load current range.

The power-save mode is optimized for low output-voltage ripple. For low-noise applications, the device can be forced into fixed-frequency PWM mode by pulling the MODE pin high. In the shutdown mode, the current consumption is reduced to less than 1 µA. The TPS62590-Q1 allows the use of small inductors and capacitors to achieve a small solution size.

The TPS62590-Q1 is available in a 2-mm × 2-mm 6-pin SON package with a thermal pad for improved thermal performance.

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Technical documentation

Design & development

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Hardware development

document-generic User guide
The TPS62590EVM-454 evaluation module facilitates evaluation of the TPS62590 1A synchronous step-down DC/DC converter.
  • High Efficiency Step-Down Converter
  • Output Current up to 1000mA
  • Vin Range from 2.5V to 5.5V
  • 2.25MHz Fixed Frequency Operation
  • Power Save Mode at Light Load Currents
  • Output Voltage Accuracy in PWM Mode ±2.5%
  • Typical 15µA Quiescent Current
  • 100% Duty Cycle for Lowest Dropout
  • Voltage Positioning at Light Loads

Design tools & simulation

SLIM122A.ZIP (37 KB) - PSpice Model
SLVM237.TSC (129 KB) - TINA-TI Reference Design
SLVM238.ZIP (35 KB) - TINA-TI Spice Model
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SLVC780.ZIP (138 KB)

CAD/CAE symbols

Package Pins Download
WSON (DRV) 6 View options

Ordering & quality

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