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TPS65268-Q1
  • TPS65268-Q1
  • TPS65268-Q1
  • TPS65268-Q1

TPS65268-Q1

ACTIVE

4-V to 8-V, 3-A, 2-A Triple Synchronous Step-Down Converter

Texas Instruments TPS65268-Q1 Product Info

1 April 2026 2

Parameters

Rating

Automotive

Topology

Buck

Iout (max) (A)

3

Vin (max) (V)

8

Vin (min) (V)

4

Vout (max) (V)

6

Vout (min) (V)

0.6

Features

Enable, Frequency synchronization, Light-load efficiency, Overcurrent protection, Phase Interleaving, Power good, Soft-start adjustable, UVLO adjustable

Control mode

current mode

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.0006

Duty cycle (max) (%)

100

Package

VQFN (RHB)-32-25 mm² 5 x 5

Features

  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C operating junction temperature
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4B
  • Operating input voltage range 4-V to 8-V maximum continuous output current 3 A, 2 A, 2 A
  • Feedback reference voltage 0.6 V ±1%
  • Adjustable clock frequency from 200 kHz to 2.3 MHz
  • Forced continuous current mode (FCCM)
  • External clock synchronization
  • Dedicated enable and soft-start pins for each buck
  • Output voltage power-good indicator
  • Thermal overloading protection
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C operating junction temperature
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4B
  • Operating input voltage range 4-V to 8-V maximum continuous output current 3 A, 2 A, 2 A
  • Feedback reference voltage 0.6 V ±1%
  • Adjustable clock frequency from 200 kHz to 2.3 MHz
  • Forced continuous current mode (FCCM)
  • External clock synchronization
  • Dedicated enable and soft-start pins for each buck
  • Output voltage power-good indicator
  • Thermal overloading protection

Description

The TPS65268-Q1 device incorporates triple-synchronous buck converters with 4-V to 8-V wide input voltage. The converter with constant frequency peak current mode is designed to simplify its application while giving designers options to optimize the system according to targeted applications. The switching frequency of the converters is adjustable from 200 kHz to 2.3 MHz with an external resistor. Operation that is 180° out-of-phase between BUCK1 and BUCK2, and BUCK3 (BUCK2 and BUCK3 run in phase) minimizes the input filter requirements.

Each buck converter in the TPS65268-Q1 device operates in forced continuous-current mode (FCCM) at light load condition for reduced output voltage ripple and improved load transient response.

The TPS65268-Q1 device features overvoltage, overcurrent, short-circuit, and overtemperature protection.

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