TI TPS78518QWDRBRQ1

The TPS785-Q1 ultra-low dropout regulator (LDO) is a compact, low-quiescent-current LDO capable of delivering 1A with excellent line and load transient performance.

With low output noise and outstanding PSRR performance, this device is well suited for power-sensitive analog loads. The TPS785-Q1 features an input voltage range of 1.7V to 6.0V and an adjustable output voltage range of 1.2V to 5.5V, making it a flexible post-regulation solution. Fixed output voltages from 0.65V to 5.0V are also available to power commonly used voltage rails.

The TPS785-Q1 incorporates foldback current limiting to reduce power dissipation under overcurrent conditions. The EN pin input facilitates system power sequencing requirements. An internal soft-start reduces inrush current by controlling the startup ramp, thereby minimizing the required input capacitance.

The TPS785-Q1 provides an active discharge circuit that enables rapid output discharge when the device is disabled.

• AEC-Q100 qualified for automotive applications: Temperature Grade 1: -40℃ to +125℃, TA device junction temperature: -40℃ to +150℃
• Input voltage range: 1.7V to 6.0V
• Available output voltages:
  • Adjustable option: 1.2V to 5.5V
  • Fixed option: 0.65V to 5.0V
• Output accuracy: 0.5% typical, 1.7% maximum
• Low IQ: 25μA (typical)
• Ultra-low dropout:
  • 315mV (maximum) at 1A (3.3Vₒᵤₜ)
• Internal soft-start time of 550 μs to reduce inrush current
• Active output discharge
• Package:
  • 3mm×3mm wettable-flank VSON (8)
  • 5-pin TO-252, Rθₐ = 31.6℃/W

• Automotive head units
• Hybrid instrument clusters
• Telematics control units
• Mid-range and short-range radar
• DC/DC converters