Texas Instruments TPS720/TPS720-Q1 Low-Dropout Linear Regulators
Texas Instruments TPS720/TPS720-Q1 Low-Dropout Linear Regulators are dual rail, low-dropout linear regulators (LDOs). These devices offer outstanding AC performance (PSRR, load, and line transient response) while consuming a very low quiescent current. The VBIAS rail that powers the control circuit of the LDO draws a very low current. The VBIAS rail can be connected to any power supply equal to or greater than 1.4V above the output voltage. The main power path is through VIN, which can be a lower voltage than VBIAS; it can be as low as VOUT + VDO, increasing the solution's efficiency in many power-sensitive applications. For example, VIN can be an output of a high-efficiency DC-DC step-down regulator. The Texas Instruments TPS720-Q1 devices are AEC-Q100 qualified for automotive applications.
Features
- 350mA high-performance LDO
- 38µA low quiescent current
- Excellent load transient response
- ±15mV for ILOAD = 0mA to 350mA in 1µs
- Excellent line transient response
- ΔVOUT = ±2mV for ΔVBIAS = ±600mV in 1µs
- ΔVOUT = ±200µV for ΔVIN = ±400mV in 1µs
- Low noise
- 48µVRMS (10Hz to 100kHz)
- 80dB VIN PSRR (10Hz to 10kHz)
- 70dB VBIAS PSRR (10Hz to 10kHz)
- 140µs fast start-up time
- Built-in soft-start with monotonic VOUT rise and start-up current limited to 100mA + ILOAD
- Overcurrent and thermal protection
- Low dropout (110mV at ILOAD = 350mA)
- Stable with 2.2µF output capacitor
- Available in 1.33mm×0.96mm DSBGA-5 and 2mm×2mm SON-6 packages
Applications
- Digital cameras
- Cellular camera phones
- Wireless LAN
- Handheld products
Datasheets
Functional Block Diagram
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Published: 2017-06-14
| Updated: 2025-06-12