Overview
The LE33CZ-AP is a very low-dropout voltage regulator produced by STMicroelectronics. This device is notable for its low dropout voltage of 0.2V and low quiescent current, making it highly suitable for low-noise, low-power applications and battery-powered systems. The LE33CZ-AP is pin-to-pin compatible with the L78L series and is available in both SO-8 and TO-92 packages. The SO-8 configuration includes a shutdown logic control, allowing for part of the board to be put in standby mode to reduce total power consumption. In the TO-92 configuration, the device is always in the on-state.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 3.3 | V |
| Dropout Voltage | 0.2 - 0.4 | V |
| Input Bias Current | 1.5 mA | mA |
| Max Input Voltage | 18 | V |
| Max Output Current | 150 mA | mA |
| Quiescent Current (ON mode, no load) | 0.5 - 1 mA | mA |
| Quiescent Current (OFF mode) | 50 - 100 µA | µA |
| Supply Voltage Rejection (f = 120 Hz, IO = 5 mA, VI = 5.3 ± 1 V) | 80 dB | dB |
| Output Noise Voltage (10 Hz to 100 kHz) | 50 µV | µV |
| Output Bypass Capacitance | 2 - 10 µF (ESR = 0.1 to 10 Ω) | µF |
| Operating Temperature Range | -40 to 125 °C | °C |
| Package | SO-8, TO-92 |
Key Features
- Very low dropout voltage (0.2V) and low quiescent current, making it suitable for low-noise, low-power applications and battery-powered systems.
- Pin-to-pin compatible with the L78L series.
- Shutdown logic control in SO-8 configuration, allowing for part of the board to be put in standby mode.
- Internal current and thermal limit for enhanced safety.
- Small 2.2µF capacitor required for stability, reducing component size and cost.
- High supply voltage rejection (80 dB at 120 Hz) and low output noise voltage (50 µV).
Applications
The LE33CZ-AP is ideal for various applications requiring low power consumption and high efficiency, such as:
- Battery-powered systems.
- Low-noise electronic devices.
- Portable electronics.
- Embedded systems.
- Automotive electronics.
Q & A
- What is the output voltage of the LE33CZ-AP?
The output voltage of the LE33CZ-AP is 3.3V.
- What is the maximum input voltage for the LE33CZ-AP?
The maximum input voltage for the LE33CZ-AP is 18V.
- What is the dropout voltage of the LE33CZ-AP?
The dropout voltage of the LE33CZ-AP is 0.2V to 0.4V.
- What is the quiescent current in ON mode for the LE33CZ-AP?
The quiescent current in ON mode for the LE33CZ-AP is 0.5mA to 1mA.
- What is the quiescent current in OFF mode for the LE33CZ-AP?
The quiescent current in OFF mode for the LE33CZ-AP is 50µA to 100µA.
- What is the supply voltage rejection of the LE33CZ-AP?
The supply voltage rejection of the LE33CZ-AP is 80 dB at 120 Hz.
- What is the output noise voltage of the LE33CZ-AP?
The output noise voltage of the LE33CZ-AP is 50 µV from 10 Hz to 100 kHz.
- What type of packages is the LE33CZ-AP available in?
The LE33CZ-AP is available in SO-8 and TO-92 packages.
- What is the operating temperature range of the LE33CZ-AP?
The operating temperature range of the LE33CZ-AP is -40°C to 125°C.
- Does the LE33CZ-AP have a shutdown feature?
Yes, the LE33CZ-AP in the SO-8 configuration has a shutdown logic control feature.
