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TPS54873

Features: ` 30-m, 12-A Peak MOSFET Switches for High Efficiency at 8-A Continuous Output Sourceor Sink Current` Disabled Current Sinking During Start-Up` 0.9-V to 3.3-V Adjustable Output Voltage Range With 1.0% Accuracy` Wide PWM Frequency: Fixed 350 kHz, 550 kHz or Adjustable 280 kHz to 700 kHz...

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SeekIC No. : 004526932 Detail

TPS54873: Features: ` 30-m, 12-A Peak MOSFET Switches for High Efficiency at 8-A Continuous Output Sourceor Sink Current` Disabled Current Sinking During Start-Up` 0.9-V to 3.3-V Adjustable Output Voltage R...

TPS54873 Data Sheet

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Part Number:
TPS54873
Supply Ability:
5000

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

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Product Details

Description



Features:

` 30-m, 12-A Peak MOSFET Switches for
    High Efficiency at 8-A Continuous Output
    Source or Sink Current
` Disabled Current Sinking During Start-Up
` 0.9-V to 3.3-V Adjustable Output Voltage
    Range With 1.0% Accuracy
` Wide PWM Frequency:
    Fixed 350 kHz, 550 kHz or
    Adjustable 280 kHz to 700 kHz
` Synchronizable to 700 kHz
` Load Protected by Peak Current Limit
    and Thermal Shutdown
` Integrated Solution Reduces Board 
    Area and Component Count


Application

· Low-Voltage, High-Density Distributed
    Power Systems
· Point of Load Regulation for High
    Performance DSPs, FPGAs, ASICs
    and Microprocessors
· Broadband, Networking and Optical
    Communications Infrastructure
· Power PC Series Processors


Specifications

 
TPS54873
  Input voltage range VI VIN, SS/ENA, SYNC
−0.3 V to 7 V
RT
−0.3 V to 6 V
VSENSE
−0.3 V to 4V
BOOT
−0.3 V to 17 V
  Output voltage range VO VBIAS, COMP, PWRGD
−0.3 V to 7 V
PH
−0.6 V to 10 V
  Source current TO PH
Internally limited
COMP, VBIAS
6 mA
  Sink current, IS PH
12 A
COMP
6 mA
SS/ENA, PWRGD
10 mA
  Voltage differential AGND to PGND
±0.3 V
  Operating virtual junction temperature range, TJ
−40 to 125
  Storage temperature, Tstg
−65to 150
  Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
300



Description

As a member of the SWIFT™ family of dc/dc regulators, the TPS54873 low-input voltage high-output current synchronous buck PWM converter integrates all
required active components. Included on the substrate with the listed features are a true, high performance, voltage error amplifier that enables maximum
performance and flexibility in choosing the output filter L and C components; an under-voltage-lockout circuit to prevent start-up until the input voltage reaches 4 V; an internally or externally set slow-start circuit to limit inrush currents; and a power good output useful for processor/logic reset, fault signaling, and supply sequencing.
For reliable power up in output precharge applications, the TPS54873 is designed to only source current during
startup.
The TPS54873 is available in a thermally enhanced 28-pin TSSOP (PWP) PowerPAD™ package, which eliminates bulky heatsinks. TI provides evaluation
modules and the SWIFT™ designer software tool to aid in quickly achieving high-performance power supply designs to meet aggressive equipment development
cycles.




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