Overview
The ADM7170ACPZ-R7 is a high-performance, 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 up to 500 mA of output current. It is available in both fixed and adjustable output voltage options, ranging from 1.2 V to 5.0 V. The device is designed for noise-sensitive applications, offering high power supply rejection ratio (PSRR) and low noise characteristics.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 2.3 V to 6.5 V |
| Output Current | Up to 500 mA |
| Output Voltage Options | Fixed: 1.2 V to 5.0 V, Adjustable: 1.2 V to VIN - VDO |
| Quiescent Current (IGND) | 0.7 mA at no load |
| Shutdown Current | 0.25 μA at VIN = 5 V |
| Dropout Voltage | 42 mV at 500 mA load, VOUT = 3 V |
| PSRR at 100 kHz | 60 dB |
| Output Noise | 5 μV rms independent of output voltage at 100 Hz to 100 kHz |
| Transient Response Time | 1.5 μs for 1 mA to 500 mA load step |
| Operating Temperature | -40°C to 125°C |
| Package Type | 8-lead, 3 mm × 3 mm LFCSP package |
Key Features
- High PSRR for noise-sensitive applications
- Enable control for power sequencing
- Over current and over temperature protection for safety
- Low power consumption with 2 mA quiescent current
- Adjustable and fixed output voltage options
- Precision enable and adjustable soft start functionality
- Compact, space-saving package suitable for high-density applications
- Stable with small 4.7 μF ceramic output capacitor
Applications
- Consumer Electronics
- Telecommunication Systems
- Industrial Control Panels
- Medical Devices
- Automotive Systems
Q & A
- What is the input voltage range of the ADM7170ACPZ-R7?
The input voltage range is from 2.3 V to 6.5 V.
- What are the output current and voltage options for this regulator?
The output current is up to 500 mA, and the output voltage options range from 1.2 V to 5.0 V in fixed configurations, and adjustable from 1.2 V to VIN - VDO.
- What is the quiescent current of the ADM7170ACPZ-R7?
The quiescent current (IGND) is 0.7 mA at no load.
- Does the ADM7170ACPZ-R7 have built-in protection features?
Yes, it includes over current and over temperature protection.
- What is the PSRR of the ADM7170ACPZ-R7 at 100 kHz?
The PSRR at 100 kHz is 60 dB.
- How does the enable control function work?
The enable control allows the regulator to be turned on or off via the EN pin, with programmable thresholds).
- What is the typical dropout voltage of the ADM7170ACPZ-R7?
The dropout voltage is typically 42 mV at a 500 mA load and VOUT = 3 V).
- Is the ADM7170ACPZ-R7 RoHS compliant?
Yes, the ADM7170ACPZ-R7 is RoHS compliant).
- What is the operating temperature range of the ADM7170ACPZ-R7?
The operating temperature range is -40°C to 125°C).
- What package type is the ADM7170ACPZ-R7 available in?
The regulator is available in an 8-lead, 3 mm × 3 mm LFCSP package).
