# TPS54331D (Component)
## Description
The TPS54331 device is a 28-V, 3-A nonsynchronous buck converter that integrates a low
RDS(on) high-side MOSFET. To increase efficiency
at light loads, a pulse skipping Eco-mode feature
is automatically activated. Furthermore, the 1-μA
shutdown supply-current allows the device to be
used in battery-powered applications. Current mode
control with internal slope compensation simplifies
the external compensation calculations and reduces
component count while allowing the use of ceramic
output capacitors. A resistor divider programs the
hysteresis of the input undervoltage lockout. An
overvoltage transient protection circuit limits voltage
overshoots during start-up and transient conditions.
A cycle-by-cycle current-limit scheme, frequency
foldback and thermal shutdown protect the device
and the load in the event of an overload condition.
The TPS54331 device is available in an 8-pin SOIC
package and 8-pin SO PowerPAD integrated circuit
package that have been internally optimized to
improve thermal performance.
• 3.5 to 28-V input voltage range
• Adjustable output voltage down to 0.8 V
• Integrated 80-mΩ high-side MOSFET supports up
to 3-A continuous output current
• High efficiency at light loads with a pulse skipping
Eco-mode
• Fixed 570-kHz switching frequency
• Typical 1-μA shutdown quiescent current
• Adjustable slow-start limits inrush currents
• Programmable UVLO threshold
• Overvoltage transient protection
• Cycle-by-cycle current limit, frequency foldback,
and thermal shutdown protection
• Available in easy-to-use SOIC8 package
or thermally-enhanced SOIC8 PowerPAD™
integrated circuit package
• Create a custom design using the TPS54331 with
the WEBENCH® Power Designer
• Use TPS62933 for a 30 VIN converter with higher
frequency, lower IQ and improved EMI
#CommonPartsLibrary #IntegratedCircuit #PowerManagement
## Component Details
- **Owner:** lcsc
- **Created:** 11/5/2024
- **Last Updated:** 6/2/2026
- **Visibility:** Public
- **LCSC Part Number:** C2872693
- **Package or Case Code:** SOIC-8_L4.9-W3.9-P1.27-LS6.0-BL
- **Symbol Style:** parametric-v1
- **Manufacturer Part Number:** TPS54331D
- **License:** https://creativecommons.org/licenses/by/4.0/
- **Manufacturer Name:** TI(德州仪器)
- **Part Type:** DC-DC Converters
- **Datasheet URL:** https://www.ti.com/lit/ds/symlink/tps54331.pdf?HQS=dis-dk-null-digikeymode-dsf-pf-null-wwe&ts=1780380869855&ref_url=https%253A%252F%252Fwww.ti.com%252Fgeneral%252Fdocs%252Fsuppproductinfo.tsp%253FdistId%253D10%2526gotoUrl%253Dhttps%253A%252F%252Fwww.ti.com%252Flit%252Fgpn%252Ftps54331
- **Used in:** 58 projects
## Distributor Pricing (qty 1)
*Pricing shown for quantity 1. For price breaks and other quantities, open in Flux.*
| Distributor | Unit Price (qty 1) | Stock |
|------------|--------------------|-------|
| [Arrow](https://www.arrow.com/en/products/tps54331d/texas-instruments.html?utm_currency=USD®ion=europe) | N/A | N/A |
| [LCSC](https://www.lcsc.com/product-detail/C2872693.html) | $0.6811 | 1.9K |
| [Mouser](https://www.mouser.com/ProductDetail/Texas-Instruments/TPS54331D?qs=QyYHynRG50pEbpiybdzwkw%3D%3D) | $2.00 | 150 |
| [TME](https://www.tme.com/us/en-us/katalog/?queryPhrase=TPS54331D) | $1.84 | 75 |
- **Part Type:** Integrated Circuits
- **Sub-Type:** Logic
- **Manufacturer:** Texas Instruments
- **MPN:** TPS54331D
- **Package / Case Code:** 28-SOIC
- **Pin Count:** 8
## Pins
| Pin | Name | Type |
|-----|------|------|
| 1 | BOOT | |
| 2 | VIN | |
| 3 | EN | |
| 4 | SS | |
| 5 | VSENSE | |
| 6 | COMP | |
| 7 | GND | |
| 8 | PH | |
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*Generated from [https://www.flux.ai/lcsc/tps54331d~hrvr](https://www.flux.ai/lcsc/tps54331d~hrvr)*