# TLV755P LDO: 500 mA, 25 µA quiescent, 1.45 to 5.5 V in

> A small 500 mA low-dropout regulator with active output discharge and fixed outputs from 0.6 to 5 V: dropout, accuracy, PSRR and packages.

Canonical: https://roboticsengineering.in/components/tlv755p-500ma-ldo/ | Published: 2026-11-03 | Updated: 2026-11-03

**The TLV755P is a small low-dropout regulator that sources 500 mA from an input of 1.45 V to 5.5 V, with 25 µA typical quiescent current, 1 percent output accuracy and a dropout of at most 238 mV at 500 mA for a 3.3 V output.** It is the higher-current relative of the [TLV702](https://roboticsengineering.in/components/tlv702-low-iq-ldo/). Figures are from the Texas Instruments TLV755P datasheet SBVS320D.

## Key specifications

| Current | 500 mA |
| --- | --- |
| Input | 1.45–5.5 V |
| Output | 0.6–5 V fixed |
| IQ | 25 µA typical |
| Dropout | 238 mV max at 500 mA (3.3 V out) |
| Accuracy | 1% max (85 °C) |
| PSRR | 46 dB at 100 kHz |

## What the datasheet promises

| Item | Datasheet value |
| --- | --- |
| Output current | 500 mA |
| Input voltage | 1.45 V to 5.5 V |
| Output voltage | Fixed versions from 0.6 V to 5 V |
| Quiescent current | 25 µA typical |
| Dropout | 238 mV maximum at 500 mA (3.3 V output) |
| Accuracy | 1 percent maximum at 85 °C |
| Ripple rejection | 46 dB at 100 kHz |
| Output capacitor | Stable with a 1 µF ceramic capacitor |
| Features | Soft-start with monotonic rise, foldback current limit, active output discharge, thermal shutdown, undervoltage lockout |
| Packages | SOT-23-5 (DBV), SOT-23-5 with thermal pad (DYD), X2SON-4 (DQN) and WSON-6 (DRV) |

The active output discharge pulls the output low when the regulator is disabled, so the load starts from a known state. For larger input-output differences, heat in an LDO equals the voltage drop times the current, so use a switching converter first.

## Using it on a robot

- Power a 3.3 V microcontroller and sensors from a single Li-ion cell or a 5 V rail.
- Use the enable pin to switch the rail from a GPIO.
- Choose the thermal-pad SOT-23-5 package if the load is near 500 mA.

## Sources and further reading

- [Texas Instruments TLV755P datasheet (SBVS320D)](https://www.ti.com/lit/ds/symlink/tlv755p.pdf) — current, input range, outputs, quiescent current, dropout, accuracy, PSRR, features and packages above.

Last reviewed: November 2026. Limits are from the Texas Instruments datasheet; breakout boards and modules vary. No price is quoted because it has not been checked.