illustrate

TPS54383 TPS54386 is a dual-output, asynchronous step-down converter that supports 3-A output applications operating at 4.5 V to 28 V input supply voltages and requires output voltage capability at 0.8 V and 90% input voltage.

With internally determined operating frequency, soft-start time and control loop compensation, these converters offer many features with minimal external components. Channel 1 overcurrent protection is set at 4.5, while channel 2 overcurrent protection level is pinned to ground by connection, BP selection, or overhang. The setting hierarchy is used to allow the application to scale the two outputs of external components to full load capacity.

characteristic

• 4.5 - V to 28 V input range
• Output voltage range 0.8 V to 90% input voltage
• Output current up to 3A
• Two fixed switching frequency versions:
  • TPS54383: 300 kHz
  • TPS54386: 600 kHz
• Three: Selectable levels of overcurrent protection (output 2).
• 0.8 – 1.5% of V, voltage reference
• Internal soft start of 2.1 ms
• Dual PWM outputs operate in a 180° off-phase operation
• Proportional or sequential start mode is available from a single pin
• 85 meters Internal high-side MOSFETs
• Current mode control
• Internal compensation (see page 16)
• The pulse is protected by pulse overcurrent
• Thermal shutdown protection at 148 C
• The 14-pin HTSSOP package will PowerPAD™
• apply
  • Stb
  • digital television