Linear Voltage Regulator IC Positive Fixed 1 Output 500mA SOT-23-5

The TLV75533PDBVR is a low-dropout (LDO) linear voltage regulator designed to provide a stable 3.3 V output from a higher input voltage source. It features ultra-low quiescent current and high power-supply rejection ratio (PSRR), making it ideal for battery-powered and noise-sensitive applications such as IoT devices, portable electronics, and RF circuits. The device is optimized for fast transient response and stable operation with small ceramic output capacitors.

Key Features

Fixed output voltage: 3.3 V Low dropout voltage (typ. ~200 mV at full load) Ultra-low quiescent current (typ. 25 µA) High PSRR for noise-sensitive applications Stable with small ceramic capacitors (≥1 µF) Thermal shutdown and overcurrent protection Available in compact SOT-23-5 package (DBV)

Absolute Maximum Ratings

Input voltage: –0.3 V to 6.5 V Output voltage: –0.3 V to (VIN + 0.3 V) Operating junction temperature: –40°C to +125°C Storage temperature range: –65°C to +150°C

Recommended Operating Conditions

Input voltage range: 1.45 V to 5.5 V Output voltage: 3.3 V (fixed) Output current: up to 500 mA Operating temperature range: –40°C to +125°C

Electrical Characteristics (Typical unless otherwise noted)

Output voltage accuracy: ±1% Dropout voltage: ~200 mV @ 500 mA Quiescent current: ~25 µA PSRR: up to 70 dB (at 1 kHz) Line regulation: <0.05%/V Load regulation: <0.5%

Pin Configuration (SOT-23-5)

Pin 1: IN – Input voltage Pin 2: GND – Ground Pin 3: EN – Enable (active high) Pin 4: NC – No connect Pin 5: OUT – Regulated output

Typical Application

Power management for microcontrollers and sensors Battery-powered portable devices RF and analog circuits requiring low noise supply IoT and wearable electronics

Protection Features

Thermal shutdown protection Overcurrent protection Undervoltage lockout (UVLO)

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