Overview
The ADP123ACPZ-R7, produced by Analog Devices Inc., is a low quiescent current, low dropout linear regulator. This device is part of the ADP123 series, which includes adjustable output voltage versions. It is designed to operate from an input voltage range of 2.3 V to 5.5 V and can provide up to 300 mA of output current. The ADP123 is particularly suited for battery-operated and space-constrained applications due to its low quiescent current and compact packaging options.
Key Specifications
| Parameter | Symbol | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Input Voltage Range | VIN | 2.3 | 5.5 | V | ||
| Output Current | IOUT | 300 | mA | |||
| Output Voltage Range (Adjustable) | VOUT | 0.8 | 5.0 | V | ||
| Dropout Voltage | VDO | IOUT = 300 mA | 85 | mV | ||
| Quiescent Current | IGND | IOUT = 0 mA | 45 | 105 | µA | |
| Shutdown Current | ISHDN | <1 | µA | |||
| Initial Accuracy | ±1% | |||||
| PSRR at 100 kHz | 60 | dB | ||||
| Enable Input Logic Low | VIL | 2.3 V ≤ VIN ≤ 5.5 V | 0.4 | V |
Key Features
- Low quiescent current of 45 µA at no load and low shutdown current of less than 1 µA, making it ideal for battery-operated devices.
- Low dropout voltage of 85 mV at 300 mA load, enhancing efficiency and allowing operation over a wide input voltage range.
- Adjustable output voltage range from 0.8 V to 5.0 V using an external voltage divider.
- Excellent PSRR performance of 60 dB at 100 kHz and good load/line transient response.
- Internal soft start with a constant start-up time of 350 µs.
- Current limit and thermal overload protection circuits for reliability.
- Compact packaging options including 5-lead TSOT and 6-lead 2 mm × 2 mm LFCSP.
Applications
- Digital camera and audio devices.
- Portable and battery-powered equipment.
- Automatic meter reading (AMR) meters.
- GPS and location management units.
- Medical instrumentation.
- Point-of-sale equipment.
Q & A
- What is the input voltage range of the ADP123ACPZ-R7? The input voltage range is from 2.3 V to 5.5 V.
- What is the maximum output current of the ADP123ACPZ-R7? The maximum output current is 300 mA.
- How is the output voltage adjusted in the ADP123ACPZ-R7? The output voltage can be adjusted between 0.8 V and 5.0 V using an external voltage divider.
- What is the quiescent current of the ADP123ACPZ-R7 at no load? The quiescent current at no load is 45 µA.
- What is the dropout voltage of the ADP123ACPZ-R7 at 300 mA load? The dropout voltage at 300 mA load is 85 mV.
- Does the ADP123ACPZ-R7 have built-in protection features? Yes, it includes current limit and thermal overload protection circuits.
- What are the packaging options for the ADP123ACPZ-R7? The device is available in 5-lead TSOT and 6-lead 2 mm × 2 mm LFCSP packages.
- What is the PSRR performance of the ADP123ACPZ-R7 at 100 kHz? The PSRR performance is 60 dB at 100 kHz.
- Is the ADP123ACPZ-R7 suitable for battery-operated devices? Yes, it is highly suitable due to its low quiescent current and low shutdown current.
- What is the start-up time of the ADP123ACPZ-R7? The internal soft start provides a constant start-up time of 350 µs.
