TPS784

• Output accuracy:
  • ±0.5% (typ), ±0.75%, –40°C to +85°C
• Device junction temperature: –40°C to +150°C, T_J
• Input voltage range: 1.65 V to 6.0 V
• Adjustable output voltage range: 1.2 V to 5.5 V
• Low I_Q: 25 µA (typ)
• Ultra-low dropout:
  • 115 mV (max) at 300 mA (3.3 V_OUT)
• Internal 350-µs soft-start time to reduce inrush current
• Active output discharge
• Package: 5-pin SOT-23

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The TPS784 is an adjustable 300-mA ultra low-dropout regulator (LDO) with a low quiescent current. This device is available in a small 5-pin, 2.9-mm × 1.6-mm, SOT-23 package and has an excellent line and load transient performance.

The low output noise and great PSRR performance make this device suitable to power-sensitive analog loads. The TPS784 is a flexible device for post regulation because this device supports an input voltage range from 1.65 V to 6.0 V and offers an adjustable output range of 1.2 V to 5.5 V.

The TPS784 offers foldback current limit to reduce power dissipation during over current condition. The EN input helps with power sequencing requirements of the system. The internal soft-start provides a controlled startup reducing the inrush current and allowing for a small input capacitor to be used.

The TPS784 provides an active pulldown circuit to quickly discharge output loads when disabled.