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TPS51124

Features: · High Efficiency, Low-Power Consumption, Shutdowns to <1 mA· 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 Vol...

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SeekIC No. : 004526850 Detail

TPS51124: Features: · High Efficiency, Low-Power Consumption, Shutdowns to <1 mA· Fixed Frequency Emulated On-Time Control,Frequency Selectable From Three Options· D-CAP™ Mode Enables Fast Transient ...

TPS51124 Data Sheet

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Part Number:
TPS51124
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

· High Efficiency, Low-Power Consumption, Shutdowns to <1 mA
· 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
· Power-Good Signals for Each Channel With Delay Timer
· Output Discharge During Disable, Fault


Application

· Notebook I/O and Low Voltage System Bus


Pinout

Connection Diagram


Specifications

  VALUE UNIT
Input voltage
range		 VBST1, VBST2 0.3 to 36 V
VBST1, VBST2 (wrt LLx) 0.3 to 6
V5IN, V5FILT, EN1, EN2, VFB1, VFB2, TRIP1, TRIP2, VO1, VO2, TONSEL 0.3 to 6
Output voltage
range		 DRVH1, DRVH2 1 to 36 V
DRVH1, DRVH2 (wrt LLx) 0.3 to 6
LL1, LL2 2 to 30
PGOOD1, PGOOD2, DRVL1, DRVL2 0.3 to 6
PGND1, PGND2 0.3 to 0.3
TA Operating ambient temperature range 40 to 85 °C
Tstg Storage temperature range 55 to 150 °C
TJ Junction temperature range 40 to 125 °C



Description

The TPS51124 is a dual, adaptive on-time D-CAP™ mode synchronous buck controller. The TPS51124 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 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,and output voltages from 0.76 V to 5.5 V.

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




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