TPS566235 4.5-V to 18-V input, 6-A synchronous step-down voltage regulator |

This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
4.5-V to 18-V input, 6-A synchronous step-down voltage regulator



The TPS566235 is a cost effective, high-voltage input, high efficiency synchronous Buck converter with integrated FETs. It enables system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low component count, low standby current solution.

The TPS566235 employs the D-CAP3™ mode control that provides a fast transient response and good line/load regulation with no external compensation components. It also has a proprietary circuit that enables the device to support low equivalent series resistance (ESR) output capacitors such as specialty polymer and ultra-low ESR ceramic capacitors. The control topology supports seamless transition between CCM mode at heavy load conditions and DCM operation at light load conditions. There are three operation modes can be configured by MODE pin at light load: Eco-Mode™, Out-Of-Audio™ (OOA) and Forced Continuous Conduction Mode (FCCM). The OOA mode is a unique control feature that keeps the switching frequency above audible frequency with minimum reduction in efficiency.

The TPS566235 supports pre-biased start up and power good indicator. It provides complete protection including OVP, UVP, OCP, OTP and UVLO. The device is available in 3.0-mm x 2.0-mm HotRod™ package and the junction temperature is specified from –40°C to 125°C.


  • Input voltage range: 4.5 V to 18 V
  • Output voltage range: 0.6 V to 7 V
  • ±1% reference voltage at room temperature
  • Supports 6-A continuous output current
  • D-CAP3™ architecture control for fast transient response
  • Integrated 25-mΩ and 12-mΩ RDS(on) power FETs
  • 108-µA low quiescent current
  • Selectable Eco-Mode™, Out-Of-Audio™ and FCCM by MODE pin
  • Out-Of-Audio™ light-load operation with switching frequency over 25 kHz
  • Supports pre-biased start up function
  • 600-kHz switching frequency
  • Internal 1-ms soft start
  • Supports ceramic output capacitors
  • Power good indicator
  • Cycle-by-cycle valley over current protection
  • Non-latched for OC, OV, UV, OT and UVLO protections
  • 3.0-mm × 2.0-mm HotRod™ VQFN package
  • Create a Custom Design Using the TPS566235 With the WEBENCH® Power Designer

All trademarks are the property of their respective owners.

WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer TPS566235

  Min   Max Range
Vin  V 4.5 to 18.0V
Vout  V 0.6 to 7V
Iout  A ≤ 6A
Ambient Temp  °C -40 to 125°C


Compare all products in Buck converters (integrated switch) Email Download to Excel
Part number Order Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Iout (Max) (A) Regulated outputs (#) Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Control mode Duty cycle (Max) (%) Operating temperature range (C) Rating Package Group Type Package size: mm2:W x L (PKG)
TPS566235 Order now 4.5     18     0.6     7     6     1     600     600     0.11     Enable
Forced PWM
Light Load Efficiency
Over Current Protection
Power Good
Pre-Bias Start-Up
Soft Start Fixed
Forced PWM    
D-CAP3     88     -40 to 125     Catalog     VQFN-HR | 13     Converter     13VQFN-HR: 6 mm2: 2 x 3 (VQFN-HR | 13)