|Package | PIN:||RHL | 14|
|Temp:||S (-40 to 150)|
- Integrated 26 mΩ, 19 mΩ MOSFETs
- Split Power Rail: 1.6 V to 17 V on PVIN
- 200 kHz to 1.6 MHz Switching Frequency
- Light Load Efficient With Pulse Skip
- Synchronizes to External Clock
- 0.6 V ±1% Voltage Reference Overtemperature
- Low 2-µA Shutdown Quiescent Current
- Monotonic Start-Up into Pre-biased Outputs
- –40°C to 150°C Operating Junction Temperature Range
- Adjustable Slow Start and Power Sequencing
- Power Good Output Monitor for Undervoltage and Overvoltage
- Adjustable Input Undervoltage Lockout
- Create a Custom Design Using the TPS54623 With the WEBENCH® Power Designer
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Texas Instruments TPS54623RHLT
The TPS54623 in thermally enhanced VQFN package is a full featured 17-V, 6-A synchronousstep-down converter which is optimized for small designs through high efficiency and integratingthe high-side and low-side MOSFETs. Further space savings are achieved through current modecontrol, which reduces component count, and by selecting a high switching frequency, reducing theinductors footprint.
The output voltage start-up ramp is controlled by the SS/TR pin, which allows operationas either a stand alone power supply or in tracking situations. Power sequencing is also possibleby correctly configuring the enable and the open drain power good pins.
Cycle-by-cycle current limiting on the high-side FET protects the device in overloadsituations and is enhanced by a low-side sourcing current limit which prevents current runaway.There is also a low-side sinking current limit that turns off the low-side MOSFET to preventexcessive reverse current. Hiccup protection will be triggered if the overcurrent condition haspersisted for longer than the preset time. Thermal hiccup protection disables the device when thedie temperature exceeds the thermal shutdown temperature and enables the part again after thebuilt-in thermal shutdown hiccup time. The TPS54623 operates at continuous current mode (CCM) athigher load conditions while skipping pulses to boost the efficiency at light loads.