Overview
The ADP7142AUJZ-3.3-R7 is a CMOS, low dropout (LDO) linear regulator produced by Analog Devices Inc. This high-input-voltage LDO operates from 2.7 V to 40 V and provides up to 200 mA of output current. It is designed for the regulation of high-performance analog and mixed-signal circuits, offering excellent line and load transient response with a small 2.2 µF ceramic output capacitor. The device is available in a 5-lead TSOT package and supports a temperature range from -40°C to +125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.7 V to 40 V | V |
| Output Voltage | 3.3 V (fixed) | V |
| Maximum Output Current | 200 mA | mA |
| Initial Accuracy | ±0.8% | % |
| Accuracy over Line, Load, and Temperature | -1.2% to +1.5% (TJ = -40 to +85°C), ±1.8% (TJ = -40 to +125°C) | % |
| Quiescent Current (IGND) | 50 µA (typical) with no load | µA |
| Shutdown Current | 1.8 µA at VIN = 6 V, 3.0 µA at VIN = 40 V | µA |
| Dropout Voltage | 200 mV typical at IOUT = 200 mA | mV |
| Output Noise | 11 µV rms independent of fixed output voltage | µV rms |
| Power Supply Rejection Ratio (PSRR) | 88 dB at 10 kHz, 68 dB at 100 kHz, 50 dB at 1 MHz (VOUT ≤ 5 V, VIN = 7 V) | dB |
| Package Type | TSOT-5 | - |
| Operating Temperature Range | -40°C to +125°C | °C |
Key Features
- Low noise of 11 µV rms independent of fixed output voltage
- High power supply rejection ratio (PSRR) of 88 dB at 10 kHz, 68 dB at 100 kHz, and 50 dB at 1 MHz
- Low quiescent current of 50 µA (typical) with no load
- Low shutdown current of 1.8 µA at VIN = 6 V and 3.0 µA at VIN = 40 V
- Stable operation with a small 2.2 µF ceramic output capacitor
- Dropout voltage of 200 mV typical at IOUT = 200 mA
- Adjustable output voltage using an external voltage divider
Applications
- Communications and infrastructure
- Medical and healthcare devices
- Industrial and instrumentation equipment
- Automotive systems
- High-performance analog and mixed-signal circuits
Q & A
- What is the input voltage range of the ADP7142AUJZ-3.3-R7?
The input voltage range is from 2.7 V to 40 V.
- What is the fixed output voltage of the ADP7142AUJZ-3.3-R7?
The fixed output voltage is 3.3 V.
- What is the maximum output current of the ADP7142AUJZ-3.3-R7?
The maximum output current is 200 mA.
- What is the initial accuracy of the ADP7142AUJZ-3.3-R7?
The initial accuracy is ±0.8%.
- How does the ADP7142AUJZ-3.3-R7 perform in terms of noise?
The device has a low noise of 11 µV rms independent of the fixed output voltage.
- What is the quiescent current of the ADP7142AUJZ-3.3-R7?
The quiescent current is 50 µA (typical) with no load.
- Can the output voltage of the ADP7142AUJZ-3.3-R7 be adjusted?
Yes, the output voltage can be adjusted using an external voltage divider.
- What is the operating temperature range of the ADP7142AUJZ-3.3-R7?
The operating temperature range is from -40°C to +125°C.
- What package type is the ADP7142AUJZ-3.3-R7 available in?
The device is available in a 5-lead TSOT package.
- What are some typical applications of the ADP7142AUJZ-3.3-R7?
Typical applications include communications and infrastructure, medical and healthcare devices, industrial and instrumentation equipment, and automotive systems.
