TI TPS72009QDRVRQ1

The TPS720-Q1 series dual-rail, low-dropout linear regulator (LDO) features excellent AC performance (PSRR, load and line transient response) with ultra-low quiescent current down to 38μA. The VBias rail that powers the LDO control circuit draws minimal current (comparable to the LDO quiescent current) and can be connected to any supply that exceeds the output voltage by 1.4V or more. The primary power path is VIN, which can be lower than VBias; this path can go as low as VOUT + VDO, helping improve efficiency in many power-sensitive applications. For example, VIN can serve as the output of a high-efficiency DC-DC buck regulator. The TPS720-Q1 supports a new feature that stabilizes the LDO output below light load when the IN pin is left floating. In this case, the light-load drive current is sourced from VBias. This feature is especially effective in energy-saving applications where the DC-DC converter connected to the IN pin is disabled, but the LDO is still required to regulate voltage under light load. The TPS720-Q1 remains stable with ceramic capacitors, and using an advanced BiCMOS process, produces a dropout voltage of only 110mV at 350mA output load current. With a 2.2μF output capacitor, the TPS720-Q1 achieves monotonic VOUT rise (overshoot limited to 3%) while limiting VIN inrush current to 100mA + ILOAD. The TPS720-Q1 uses a high-precision voltage reference and feedback loop to achieve 2% total accuracy over load, line, process, and temperature variations. The TPS720-Q1 is available in a 6-pin WSON package. Devices in this series are rated for an operating junction temperature range of TJ = -40°C to +125°C.

• Automotive electronics applications, AEC-Q100 compliant
• Device temperature grade 1: -40°C to +125°C ambient operating temperature range
• Device HBM ESD classification level H2
• Device CDM ESD classification level C6
• Input voltage range: 1.1V to 4.5V
• Output voltage range: 0.9V to 3.6V
• High-performance LDO: 350mA
• Low quiescent current: 38μA
• Excellent load transient response: ±15mV (when ILOAD steps from 0mA to 350mA within 1μs)
• Low noise: 48μVRMS (10Hz to 100kHz)
• 80dB VIN PSRR (10Hz to 10kHz)
• 70dB VBIAS PSRR (10Hz to 10kHz)
• Fast startup time: 140μs
• Integrated soft-start with monotonic VOUT rise and inrush current limited to 100mA + ILOAD
• Overcurrent and thermal protection
• Low dropout: 110mV (at ILOAD = 350mA)
• Stable with 2.2μF output capacitor
• Package: 2.00mm×2.00mm, 6-pin WSON

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