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TLV70218DBVT

1.8V 300mA LDO, 35uA Iq, 68dB PSRR, SOT-23-5

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Manufacturer Part：

TLV70218DBVT

Package：

SOT-23-5 (2.9 x 1.6 x 1.2 mm)

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Description

Product Overview

The TLV70218DBVT from Texas Instruments is a 300mA low-IQ LDO regulator with 1.8V fixed output, 68dB PSRR, and enable pin in SOT-23-5 package.

Key Specifications

Output Voltage 1.8V fixed (+/-2%)
Output Current 300 mA
Dropout Voltage 37 mV @ 50mA, 220 mV @ 300mA
Input Voltage 2V to 5.5V
Quiescent Current 35 uA typical
PSRR 68 dB @ 1kHz
Enable Yes (1uA shutdown)
Stable With 0.1uF minimum output capacitor
Package SOT-23-5 (DBV suffix)
Operating Temperature -40 to +125 C

Features

  • 1.8V output for low-voltage MCU and FPGA core supply
  • 37mV ultra-low dropout at 50mA for high-efficiency regulation
  • 35uA low quiescent current for always-on systems
  • 68dB high PSRR for noise-sensitive analog/RF circuits
  • Stable with only 0.1uF output capacitor

Applications

  • MCU and FPGA 1.8V core supply
  • Low-voltage DDR memory termination
  • Portable device 1.8V power rail
  • IoT SoC 1.8V supply
  • Wireless module 1.8V analog supply

The TLV70218DBVT from Texas Instruments is a 300mA low-IQ low-dropout linear regulator with 1.8V fixed output in SOT-23-5 package. The device features 35uA typical quiescent current, ultra-low 37mV dropout at 50mA, and 68dB PSRR at 1kHz. The 1.8V output is commonly used for MCU/FPGA core supply and DDR memory. The 2V to 5.5V input range supports Li-ion battery and 3.3V/5V rail operation. The enable pin provides 1uA shutdown mode. The DBVT suffix denotes SOT-23-5 package with tape and reel packaging.

The TLV70218DBVT operates as a low-IQ LDO linear regulator with 1.8V fixed output. (1) The P-channel MOSFET pass element provides very low dropout voltage: only 37mV at 50mA load, making it efficient for 1.8V rails powered from 2V or higher. The precision bandgap reference and error amplifier maintain +/-2% output voltage accuracy. (2) The 35uA quiescent current supports always-on applications where the regulator must remain active with minimal battery drain. In shutdown mode (EN pin low), the quiescent current drops to 1uA, extending battery life in portable devices. (3) The 68dB PSRR at 1kHz provides excellent input ripple rejection, critical for noise-sensitive 1.8V analog and RF supply rails. The stability with only 0.1uF effective output capacitance enables the use of very small capacitors, saving board space in compact designs.

Pin Name Function
1 IN Input supply (2-5.5V)
2 GND Ground
3 EN Enable (>0.9V=on, <0.4V=off)
4 NC No connect
5 OUT 1.8V regulated output
  • MCU and FPGA 1.8V core supply with ultra-low dropout
  • Low-voltage DDR memory termination power rail
  • Portable device 1.8V power rail with 35uA quiescent current
  • IoT SoC 1.8V supply with enable shutdown
  • Wireless module 1.8V analog supply with 68dB PSRR
Model Manufacturer Key Difference
TLV70233DBVR TI 3.3V output, same family
TLV70018DDCR TI 1.8V, 38uA, SOT-23-THIN
AP2112K-1.8TRG1 Diodes 1.8V, 600mA, SOT-23-5
MIC5219-1.8YM5-TR Microchip 1.8V, 500mA, SOT-23-5
RT9193-18GB Richtek 1.8V, 300mA, SOT-23-5
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