TPS78425QDBVRQ1

The TPS784-Q1 ultra-low dropout regulator (LDO) is a small-sized LDO with low quiescent current, capable of providing 300mA of current and featuring excellent line and load transient performance. With low output noise and excellent PSRR performance, this device is suitable for powering sensitive analog loads. The TPS784-Q1 has an input voltage range of 1.65V to 6.0V and an adjustable output voltage range of 1.2V to 5.5V, making it a flexible post-regulator device. It also offers fixed output voltages from 0.65V to 5.0V for powering commonly used voltage rails. The TPS784-Q1 has foldback current limiting to reduce power dissipation under overcurrent conditions. The EN pin input helps meet the power supply sequencing requirements of the system. Internal soft-start reduces inrush current by controlling the startup process, thereby reducing the input capacitance used. The TPS784-Q1 provides an active pull-down circuit that allows the output load to quickly discharge when disabled.

Applications

• Automotive head unit
• Hybrid instrument cluster
• Telematics control unit
• DC/DC converter

Key features

• AEC-Q100 qualified for automotive applications: Temperature Grade 1: -40°C to +125°C, T_A; Junction temperature: -40°C to +150°C, T_J
• Input voltage range: 1.65V 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
• 50dB PSRR (up to 100kHz)
• Low I_Q: 25μA (typical)
• Ultralow dropout:
• 115mV (maximum) at 300mA (3.3V OUT)
• Internal soft-start time of 500μs for inrush current reduction
• Active output discharge for functional safety
• Documentation to support functional safety system design
• Package:
• 3mm×3mm wettable flank VSON (8)
• 5-pin SOT-23