Overview
The ADP122ACPZ-3.3-R7 is a low dropout linear voltage regulator produced by Analog Devices Inc. This component is designed for power management in various electronic systems, particularly those requiring high efficiency and low quiescent current. It is part of the ADP122 series, which offers a range of fixed output voltages, with this specific model providing a fixed output voltage of 3.3V. The regulator is optimized for use in battery-powered and space-constrained applications, making it ideal for consumer electronics, telecommunications, industrial, portable devices, and healthcare equipment.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.3 to 5.5 | V |
| Output Voltage | 3.3 | V |
| Dropout Voltage | 85 mV @ 300 mA | V |
| Output Current | 300 mA | mA |
| Quiescent Current | 45 µA (no load), 105 µA (full load) | µA |
| Supply Current (Max) | 170 µA | µA |
| Power Supply Rejection Ratio (PSRR) | 60 dB @ 100 kHz | dB |
| Package | 6-lead LFCSP (2 mm x 2 mm) | |
| Enable Pin | Logic controlled on/off | |
| Protection Features | Over current, over temperature, under voltage lockout (UVLO) |
Key Features
- Low dropout voltage of 85 mV at 300 mA load, enhancing efficiency and allowing operation over a wide input voltage range.
- Low quiescent current of 45 µA at no load and 105 µA at full load, ideal for battery-operated devices.
- High power supply rejection ratio (PSRR) of 60 dB at 100 kHz, minimizing noise and interference from the power supply.
- Stable operation with small ceramic output capacitors (1.0 µF recommended).
- Logic-controlled enable pin for on/off control.
- Compact 6-lead LFCSP package suitable for space-constrained applications.
- Over current, over temperature, and under voltage lockout (UVLO) protection features for enhanced reliability.
Applications
- Consumer Electronics: Suitable for various consumer devices requiring efficient power management.
- Telecommunications: Used in telecommunications equipment for reliable power supply.
- Industrial: Ideal for industrial applications where space and power efficiency are critical.
- Portable Devices: Optimized for battery-powered portable devices to extend battery life.
- Healthcare: Used in medical instrumentation and other healthcare equipment requiring precise power regulation.
- Digital Camera and Audio Devices: Suitable for digital cameras and audio devices due to its high PSRR and low noise characteristics.
- Automatic Meter Reading (AMR) Meters: Used in AMR meters for efficient power management.
- GPS and Location Management Units: Ideal for GPS and location management units due to its compact size and low power consumption.
- Point-of-Sale Equipment: Used in point-of-sale equipment for reliable and efficient power supply.
Q & A
- What is the input voltage range of the ADP122ACPZ-3.3-R7?
The input voltage range is from 2.3 V to 5.5 V.
- What is the fixed output voltage of the ADP122ACPZ-3.3-R7?
The fixed output voltage is 3.3 V.
- What is the maximum output current of the ADP122ACPZ-3.3-R7?
The maximum output current is 300 mA).
- What is the quiescent current of the ADP122ACPZ-3.3-R7?
The quiescent current is 45 µA at no load and 105 µA at full load).
- Does the ADP122ACPZ-3.3-R7 have any protection features?
Yes, it includes over current, over temperature, and under voltage lockout (UVLO) protection features).
- What type of package does the ADP122ACPZ-3.3-R7 come in?
The component comes in a 6-lead LFCSP (2 mm x 2 mm) package).
- Is the ADP122ACPZ-3.3-R7 suitable for battery-powered devices?
Yes, it is optimized for battery-powered devices due to its low quiescent current and high efficiency).
- What is the power supply rejection ratio (PSRR) of the ADP122ACPZ-3.3-R7?
The PSRR is 60 dB at 100 kHz).
- Can the ADP122ACPZ-3.3-R7 be used with small ceramic capacitors?
Yes, it is stable with small ceramic output capacitors (1.0 µF recommended)).
- Does the ADP122ACPZ-3.3-R7 have an enable pin for on/off control?
Yes, it has a logic-controlled enable pin for on/off control).
