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TPS73618DBVR

1.8V LDO, 400mA, 30µVRMS noise, 68dB PSRR, SOT-23-5

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Manufacturer Part：

TPS73618DBVR

Package：

SOT-23-5 (2.9 x 1.6 x 1.1 mm)

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Description

Product Overview

The TPS73618DBVR from Texas Instruments is an ultra-low-noise, high PSRR LDO regulator with fixed 1.8V output, 400mA capability, and only 30 µVRMS output noise for noise-sensitive applications.

Key Specifications

Manufacturer Texas Instruments
Output Voltage 1.8V fixed
Input Voltage 2.7V to 5.5V
Output Current 400 mA
Dropout Voltage 75 mV @ 400mA
PSRR 68 dB @ 1kHz
Output Noise 30 µVRMS (10Hz-100kHz)
IQ 400 µA typical
Package SOT-23-5
Operating Temperature -40°C to +125°C

Features

  • Fixed 1.8V output
  • Ultra-low noise: 30 µVRMS
  • High PSRR: 68 dB @ 1kHz
  • Low dropout: 75 mV @ 400mA
  • Low quiescent current: 400 µA
  • Enable pin for power sequencing
  • Stable with ceramic capacitors
  • Thermal shutdown protection

Applications

  • RF/analog power supply
  • VCO and PLL power
  • Audio codec supply
  • Portable communications

The TPS73618DBVR from Texas Instruments is an ultra-low-noise LDO regulator with fixed 1.8V output and 400mA capability. Delivering only 30 µVRMS output noise with 68 dB PSRR at 1kHz, it is designed for noise-sensitive RF, analog, and audio applications. The low 75 mV dropout at full load, combined with only 400 µA quiescent current and an enable pin, makes it ideal for battery-powered portable equipment.

The TPS73618 uses a CMOS LDO architecture with an optimized noise reduction network. A noise reduction capacitor on the NR pin filters the reference voltage, achieving 30 µVRMS output noise. The PMOS pass transistor provides low dropout, while the fast transient response handles load steps. Ceramic output capacitors ensure stability.

Pin Name Function
1 IN Input supply
2 GND Ground
3 EN Enable (active high)
4 NR Noise reduction capacitor
5 OUT 1.8V regulated output
  • RF transceiver power supply
  • VCO/PLL clean power
  • Audio codec analog supply
  • Portable communications equipment
Manufacturer Part Number Notes
TI TPS73633DBVR 3.3V version
TI TPS73625DBVR 2.5V version
ADI LT1761ES5-1.8 Similar low-noise LDO
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Quality Assurance

Quality is the core foundation of our long-term global cooperation. With over 20 years of experience in the electronic component industry, Materialparts has built a strict and standardized quality management system covering component sourcing, incoming inspection, full-batch testing, packaging and delivery. We are committed to delivering 100% genuine, high-reliability electronic components for industrial control, automotive electronics, consumer electronics and medical device industries, and fully safeguarding your production and R&D projects.

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Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China

 

Shipping & Payment

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Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

Service & Packaging

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

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Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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