●●●TPS54386是带有集成高端MOSFET的3A双路非同步转换器DC/DC

●●●TPS54386PWPR TPS54386PWP TPS54386:   600KHZ

●●●TPS54383PWPR TPS54383PWP TPS54383:   300KHZ

• 4.5-V to 28-V Input Range
• Output Voltage Range 0.8 V to 90% of Input Voltage
• Output Current Up to 3 A
• Two Fixed Switching Frequency Versions:
  • TPS54383: 300 kHz
  • TPS54386: 600 kHz
• Three Selectable Levels of Overcurrent Protection (Output 2)
• 0.8-V 1.5% Voltage Reference
• 2.1-ms Internal Soft Start
• Dual PWM Outputs 180° Out-of-Phase
• Ratiometric or Sequential Startup Modes Selectable by a Single Pin
• 85-mInternal High-Side MOSFETs
• Current Mode Control
• Internal Compensation (See Page 16)
• Pulse-by-Pulse Overcurrent Protection
• Thermal Shutdown Protection at +148°C
• 14-Pin PowerPAD™ HTSSOP package
• APPLICATIONS
  • Set Top Box
  • Digital TV
  • Power for DSP
  • Consumer Electronics

PowerPAD Is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners.

The TPS54383 and TPS54386 are dual output, non-synchronous buck converters capable of supporting 3-A output applications that operate from a 4.5-V to 28-V input supply voltage, and require output voltages between 0.8 V and 90% of the input voltage.

With an internally-determined operating frequency, soft start time, and control loop compensation, these converters provide many features with a minimum of external components. Channel 1 overcurrent protection is set at 4.5 A, while Channel 2 overcurrent protection level is selected by connecting a pin to ground, to BP, or left floating. The setting levels are used to allow for scaling of external components for applications that do not need the full load capability of both outputs.

The outputs may be enabled independently, or may be configured to allow either ratiometric or sequential startup sequencing. Additionally, the two outputs may be powered from different sources

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