TPS43330-Q1 is not recommended for new designs.
This product continues to be in production to support existing customers. Please consider one of these alternatives:
Same functionality and pinout but is not an equivalent to the compared device:
TPS43330A-Q1 ACTIVE Automotive 2V to 40V Low Iq Single Boost & Dual Synchronous Buck Controller The TPS43330A-Q1 is a replacement for the TPS43330-Q1.

Product details


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  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C
      Ambient Operating Temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • Two Synchronous Buck Controllers
  • One Pre-Boost Controller
  • Input Range up to 40 V, (Transients up to 60 V),
    Operation Down to 2 V When Boost is Enabled
  • Low-Power-Mode IQ: 30 µA (One Buck On), 35 µA
    (Two Bucks On)
  • Low Shutdown Current Ish < 4 µA
  • Buck Output Range 0.9 V to 11 V
  • Boost Output Selectable: 7 V, 10 V, or 11 V
  • Programmable Frequency and External Synchronization Range
    150 kHz to 600 kHz
  • Separate Enable Inputs (ENA, ENB)
  • Frequency Spread Spectrum (TPS43332)
  • Selectable Forced Continuous Mode or Automatic Low-Power
    Mode at Light Loads
  • Sense Resistor or Inductor DCR Sensing
  • Out-of-Phase Switching Between Buck Channels
  • Peak Gate-Drive Current 1.5 A
  • Thermally Enhanced 38-Pin HTSSOP (DAP) PowerPAD™
open-in-new Find other Multi-channel ICs (PMIC)


The TPS43330-Q1 and TPS43332-Q1 devices (TPS4333x-Q1) include two current-mode synchronous buck controllers and a voltage-mode boost controller. The TPS4333x-Q1 family of devices is ideally suited as a pre-regulator stage with low IQ requirements and for applications that must survive supply drops due to cranking events. The integrated boost controller allows the devices to operate down to 2 V at the input without seeing a drop on the buck regulator output stages. At light loads, the buck controllers can be enabled to operate automatically in low-power mode, consuming just 30 µA of quiescent current.

The buck controllers have independent soft-start capability and power-good indicators. Current foldback in the buck controllers and cycle-by-cycle current limitation in the boost controller provide external MOSFET protection. The switching frequency can be programed over 150 kHz to 600 kHz or synchronized to an external clock in the same range. Additionally, the TPS43332-Q1 device offers frequency-hopping spread-spectrum operation.

open-in-new Find other Multi-channel ICs (PMIC)

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 5
Type Title Date
* Datasheet TPS4333x-Q1 Low IQ, Single Boost, Dual Synchronous Buck Controller datasheet (Rev. F) Dec. 23, 2014
Technical articles Start-stop technology is coming soon to a car near you Apr. 10, 2014
Technical articles Life-saving technologies to the rescue Mar. 06, 2014
User guide TPS4333x-Q1 / TPS4335x-Q1 Design Checklist Oct. 28, 2013
User guide TPS4333xEVM Apr. 01, 2011

Design & development

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Design tools & simulation

SLVM777B.ZIP (234 KB) - PSpice Model
SLVM823.TSC (197 KB) - TINA-TI Reference Design
SLVM824.TSC (143 KB) - TINA-TI Reference Design
SLVM826.TSC (200 KB) - TINA-TI Reference Design

Reference designs

Sync Buck 3.3V to 1.2V @ 1.5A
PMP7007 — Automotive Power Solution
Automotive Power Supply
PMP7031 — PMP7031 is an automotive dual buck supply with a boost on the input, which enables working down to 3V. It has a low quiesecent current during shutdown and supports various functions needed in an automotive application.
Design files

CAD/CAE symbols

Package Pins Download
HTSSOP (DAP) 38 View options

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