Overview
The ADP7185ACPZN2.5-R7 is a low dropout (LDO) linear regulator produced by Analog Devices Inc. This complementary metal oxide semiconductor (CMOS) regulator is designed to operate within a wide input voltage range of −2.0 V to −5.5 V and provides a maximum output current of up to −500 mA. It is particularly noted for its high power supply rejection ratio (PSRR) and low noise characteristics, making it suitable for high-performance analog and mixed-signal circuits. The regulator is available in a compact 8-lead, 2 mm × 2 mm LFCSP package, enhancing thermal performance and providing a small footprint for various applications.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | −2.0 V to −5.5 V |
| Maximum Output Current | −500 mA |
| Fixed Output Voltage Options | −0.5 V, −1.0 V, −1.2 V, −1.5 V, −1.8 V, −2.0 V, −2.5 V, −3.0 V, −3.3 V (and additional voltages by special order) |
| Adjustable Output Voltage Range | −0.5 V to −VIN + 0.5 V |
| Output Noise | 4 μV rms from 100 Hz to 100 kHz |
| Package Type | 8-lead, 2 mm × 2 mm LFCSP |
| Enable Logic | Capable of interfacing with positive or negative logic levels |
Key Features
- High power supply rejection ratio (PSRR) and low noise characteristics
- Low dropout voltage, ensuring minimal voltage loss
- Compact 8-lead, 2 mm × 2 mm LFCSP package for excellent thermal performance and small footprint
- Enable logic feature capable of interfacing with positive or negative logic levels
- Adjustable output voltage option using an external feedback divider
- High line and load transient response with a small 4.7 μF ceramic output capacitor
Applications
The ADP7185ACPZN2.5-R7 is suitable for a variety of applications requiring high-performance analog and mixed-signal circuits. These include:
- High-performance analog circuits operating from negative voltages
- Mixed-signal circuits requiring low noise and high PSRR
- Applications needing compact, low-profile power management solutions
- Systems requiring adjustable output voltages with high precision
Q & A
- What is the input voltage range of the ADP7185ACPZN2.5-R7?
The input voltage range is from −2.0 V to −5.5 V.
- What is the maximum output current of the ADP7185ACPZN2.5-R7?
The maximum output current is up to −500 mA.
- What are the fixed output voltage options available for the ADP7185ACPZN2.5-R7?
The fixed output voltage options include −0.5 V, −1.0 V, −1.2 V, −1.5 V, −1.8 V, −2.0 V, −2.5 V, −3.0 V, and −3.3 V, with additional voltages available by special order.
- Can the output voltage of the ADP7185ACPZN2.5-R7 be adjusted?
- What is the noise level of the ADP7185ACPZN2.5-R7?
The output noise is 4 μV rms from 100 Hz to 100 kHz.
- What package type is the ADP7185ACPZN2.5-R7 available in?
The regulator is available in an 8-lead, 2 mm × 2 mm LFCSP package.
- How does the enable logic feature of the ADP7185ACPZN2.5-R7 work?
The enable logic feature is capable of interfacing with positive or negative logic levels for maximum flexibility.
- What are the thermal performance characteristics of the ADP7185ACPZN2.5-R7?
The compact LFCSP package enhances thermal performance, providing excellent heat dissipation for applications requiring up to −500 mA of output current.
- What types of applications is the ADP7185ACPZN2.5-R7 suitable for?
The ADP7185ACPZN2.5-R7 is suitable for high-performance analog and mixed-signal circuits, particularly those operating from negative voltages and requiring low noise and high PSRR.
- How does the ADP7185ACPZN2.5-R7 handle line and load transient responses?
The regulator achieves excellent line and load transient responses with a small 4.7 μF ceramic output capacitor.
