Overview
The ADM7170ACPZ-3.0-R7 is a CMOS, low dropout linear regulator (LDO) produced by Analog Devices Inc. This regulator operates from an input voltage range of 2.3 V to 6.5 V and provides a fixed output voltage of 3.0 V with a maximum output current of up to 500 mA. It is packaged in an 8-lead, 3 mm × 3 mm LFCSP, offering a compact and low-profile solution with excellent thermal performance.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 2.3 V to 6.5 V |
| Output Voltage | 3.0 V (fixed) |
| Output Current | Up to 500 mA |
| Output Noise | 5 μV rms (typical, 100 Hz to 100 kHz) |
| Dropout Voltage | 40 mV (typical, ILOAD = 500 mA, VOUT = 3 V) |
| Quiescent Current | 0.7 mA (typical, no load) |
| Shutdown Current | 0.25 μA (typical, VIN = 5 V) |
| Enable Threshold | Typically 1.2 V with 100 mV hysteresis |
| Operating Temperature | -40°C to +125°C |
| Package Type | 8-lead LFCSP |
Key Features
- Low noise: 5 μV rms typical at 100 Hz to 100 kHz for all fixed output voltages.
- Fast transient load response: 1.5 μs typical for a load step from 1 mA to 500 mA.
- High power supply rejection ratio (PSRR): 60 dB typical at 100 kHz.
- Precision enable and adjustable soft start.
- Current-limit and thermal overload protection.
- Undervoltage lockout circuit to prevent operation below the minimum input voltage.
- Compact 8-lead LFCSP package with excellent thermal performance.
Applications
The ADM7170ACPZ-3.0-R7 is suitable for a variety of applications requiring low noise, high current, and compact footprint. These include:
- Portable electronics and battery-powered devices.
- Industrial control systems and automation.
- Medical devices requiring low noise and high reliability.
- Aerospace and defense systems where compact and reliable power solutions are critical.
- Telecommunication equipment and networking devices.
Q & A
- What is the input voltage range of the ADM7170ACPZ-3.0-R7?
The input voltage range is from 2.3 V to 6.5 V. - What is the fixed output voltage of the ADM7170ACPZ-3.0-R7?
The fixed output voltage is 3.0 V. - What is the maximum output current of the ADM7170ACPZ-3.0-R7?
The maximum output current is up to 500 mA. - What is the typical output noise of the ADM7170ACPZ-3.0-R7?
The typical output noise is 5 μV rms from 100 Hz to 100 kHz. - How does the ADM7170ACPZ-3.0-R7 handle thermal overload?
The regulator includes thermal overload protection, which limits the junction temperature to a maximum of 150°C and turns off the output if exceeded. - What is the package type of the ADM7170ACPZ-3.0-R7?
The package type is an 8-lead LFCSP. - What is the operating temperature range of the ADM7170ACPZ-3.0-R7?
The operating temperature range is from -40°C to +125°C. - How does the ADM7170ACPZ-3.0-R7 manage inrush current during startup?
The regulator uses an internal soft start feature to limit the inrush current during startup. - What is the quiescent current of the ADM7170ACPZ-3.0-R7?
The quiescent current is typically 0.7 mA at no load. - Does the ADM7170ACPZ-3.0-R7 have undervoltage lockout protection?
Yes, it includes an internal undervoltage lockout circuit to disable the output voltage when the input voltage is below the minimum required.
