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Dual, Synchronous Step Down Controller for Low Voltage System Power

Same as: TPS51124RGERG4   This part number is identical to the part number listed above. You can only order quantities of the part number listed above.

NEW - Custom reel may be available
Inventory: 239,357

Quality information

RoHS Yes
Lead finish / Ball material NIPDAU
MSL rating / Peak reflow Level-2-260C-1 YEAR
Material content View
DPPM / MTBF / Fit rate View
Qualification summary View
Ongoing reliability monitoring View
Device marking View

Packaging information

Package | Pins Package qty | Carrier Operating temperature range (°C)
VQFN (RGE) | 24 3,000 | LARGE T&R
Custom reel may be available
I (-40 to 85)
Package | Pins VQFN (RGE) | 24
Package qty | Carrier 3,000 | LARGE T&R
Custom reel may be available
Operating temperature range (°C) I (-40 to 85)
View TI packaging information

Features for the TPS51124

  • High Efficiency, Low-Power Consumption, Shutdowns to <1 µA
  • Fixed Frequency Emulated On-Time Control, Frequency Selectable
    From Three Options
  • D-CAP Mode Enables Fast Transient Response
  • Auto-Skip Mode
  • Less Than 1% Initial Reference Accuracy
  • Low Output Ripple
  • Wide Input Voltage Range: 3 V to 28 V
  • Output Voltage Range: 0.76 V to 5.5 V
  • Low-Side RDS(ON) Loss-less Current Sensing
  • Adaptive Gate Drivers With Integrated Boost Diode
  • Internal 1.2-ms Voltage-Servo Soft-Start
  • Powergood Signals for Each Channel With Delay Timer
  • Output Discharge During Disable, Fault
    • Notebook I/O and Low-Voltage System Bus

All other trademarks are the property of their respective owners

Description for the TPS51124

The TPS51124 is a dual, adaptive on-time D-CAP™ mode synchronous buck controller. The part enables system designers to cost effectively complete the suite of notebook power bus regulators with the absolute lowest external component count and lowest standby consumption. The fixed frequency emulated adaptive on-time control supports seamless operation between PWM mode at heavy load condition and reduced frequency operation at light load for high efficiency down to milliampere range. The main control loop for the TPS51124 uses the D-CAP mode that optimized for low ESR output capacitors such as POSCAP or SP-CAP promises fast transient response with no external compensation. Simple and separate power good signals for each channel allow flexibility of power sequencing. The part provides a convenient and efficient operation with supply input voltages (V5IN, V5FILT) ranging from 4.5 V to 5.5 V, conversion voltages (drain voltage for the synchronous high-side MOSFET) from 3 V to 28 V and output voltages from 0.76 V to 5.5 V.

The TPS51124 is available in 24-pin VQFN package specified from –40°C to 85°C ambient temperature range.


Qty Price (USD)
1-99 $3.454
100-249 $3.027
250-999 $2.122
1,000+ $1.710

Additional package qty | carrier options

Package qty | Carrier 250 | SMALL T&R
Inventory 56,645
Qty | Price (USD) 1ku | $1.954 1-99 $3.595 100-249 $2.931 250-999 $2.304 1,000+ $1.954