TPS7A8701RTJR

The TPS7A87 is a dual-channel, low-noise (3.8 μVRMS) LDO regulator with 500mA source capability per channel and a maximum dropout voltage of only 100mV. The TPS7A87 integrates two independent LDOs for maximum flexibility, with a solution size approximately 30% smaller than two single-channel LDOs. Each output is adjustable from 0.8V to 5.2V via external resistors. The wide input voltage range supports operation from 1.4V to 6.5V. The TPS7A87 achieves 1% output voltage accuracy across the full line, load, and temperature range, and features soft-start to reduce inrush current, making it well suited for powering sensitive analog low-voltage devices such as VCOs, ADCs, DACs, CMOS sensors, and video ASICs. Designed to power noise-sensitive components, the TPS7A87 is ideal for instrumentation, medical, video, professional audio, test and measurement, and high-speed communications applications. The device features ultralow output noise of 3.8 μVRMS and wideband PSRR of 40dB at 1MHz, minimizing phase noise and clock jitter. These features maximize the performance of timing devices, ADCs, and DACs.

Applications

• High-speed analog circuits: VCO, ADC, DAC, and LVDS
• Imaging: CMOS sensors, video ASICs
• Test and measurement
• Instrumentation and medical
• Professional audio

Key features

• Dual independent LDO channels
• Low output noise: 3.8 μVRMS (10Hz–100kHz)
• Low dropout: 100mV maximum at 0.5A
• Wide input voltage range: 1.4V to 6.5V
• Wide output voltage range: 0.8V to 5.2V
• High PSRR: 75dB at DC, 40dB at 100kHz, 40dB at 1MHz
• 1.0% accuracy over full line, load, and temperature range
• Excellent load transient response
• Adjustable startup inrush control
• Selectable soft-start charge current
• Individual open-drain power-good (PGx) outputs
• Stable with 10 μF or larger ceramic output capacitors
• 4mm × 4mm 20-pin WQFN package