TPS51285ARUKT

• Factory Lead Time
  6 Weeks
• Lifecycle Status
  ACTIVE (Last Updated: 5 days ago)
• Contact Plating
  Gold, Silver
• Mount
  Surface Mount
• Mounting Type
  Surface Mount
• Package / Case
  20-WFQFN Exposed Pad
• Number of Pins
  20
• Operating Temperature
  -40°C~85°C
• Packaging
  Tape & Reel (TR)
• Series
  D-CAP™
• JESD-609 Code
  e4
• Pbfree Code
  yes
• Part Status
  Active
• Moisture Sensitivity Level (MSL)
  2 (1 Year)
• Number of Terminations
  20
• ECCN Code
  EAR99
• Terminal Finish
  Nickel/Palladium/Gold (Ni/Pd/Au)
• Additional Feature
  3.3, 5V OUTPUT AVAILABLE. ALSO OPERATES IN ADJUSTABLE MODE RANGE 10%
• Voltage - Supply
  5V~24V
• Terminal Position
  QUAD
• Peak Reflow Temperature (Cel)
  260
• Number of Functions
  1
• Supply Voltage
  12V
• Base Part Number
  TPS51285
• Number of Outputs
  4
• Output Voltage
  5V
• Operating Supply Voltage
  24V
• Input Voltage-Nom
  12V
• Operating Supply Current
  84μA
• Output Current
  20A
• Quiescent Current
  84μA
• Input Voltage (Min)
  5V
• Topology
  Step-Down (Buck) Synchronous (2), Linear (LDO) (2)
• Control Mode
  VOLTAGE-MODE
• Frequency - Switching
  400kHz 475kHz
• Control Technique
  PULSE WIDTH MODULATION
• Voltage - Output 3
  3.3V
• Max Duty Cycle
  100 %
• Isolation
  Non-Isolated
• w/Sequencer
  No
• Voltage/Current - Output 1
  Controller
• Current - Output 3
  100mA
• Voltage/Current - Output 3
  3.3V 100mA
• Height
  800μm
• Length
  3mm
• Width
  3mm
• Thickness
  750μm
• RoHS Status
  ROHS3 Compliant
• Lead Free
  Lead Free

TPS51285ARUKT Description
The TPS51285ARUKT is a cost-effective, dual synchronous buck controller with 5-V and 3.3-V LDOs， targeted for notebook system-power supply solutions. The TPS51285ARUKT achieves low power consumption by the use of auto-skip and ULQTM modes, which is beneficial for long battery life in system standby mode. The 256-kHz VCLK output is provided to drive an external charge pump, generating gate drive voltage for the load switches with minimum power consumption in the main converter. The TPS51285ARUKT employs adaptive on-time D-CAPTM mode control which enables fast load transient response without an external compensation network. The TTPS51285ARUKT is available in a 20-pin 3 x 3 (mm) QFN package and is specified from -40°C to 85°C.

TPS51285ARUKT Features
Input Voltage Range: 5 V to 24 V Output Voltages: 5 V and 3.3 V (Adjustable Range 10%) Built-in, 100-mA, 5-V, and 3.3-V LDOs Clock Output for Charge-Pump 1% Reference Accuracy Adaptive On-Time D-CAPTM Mode Control Architecture with 400 kHz (CH1) and 475 kHz(CH2) Frequency Auto-skip and ULQTM modes for long battery life in system standby mode Internal 0.8-ms Voltage Servo Soft Start Low-Side Rps(on) Current Sensing Scheme Built-In Output Discharge Function Separate Enable Input for Switchers Dedicated OC Setting Terminals Power Good Indicator OVP, UVP, and OCP Protection Non-L _atch UVLO and OTP Protection 20-Pin, 3 mm x 3 mm, QFN (RUK)

TPS51285ARUKT Applications
Notebook Computers Tablet Computers Communications equipment  Wireless infrastructure  Industrial  Factory automation & control  Personal electronics  PC & notebooks