Part A
ADP3303ARZ-5
ADI公司
- Lifecycle
- Active
- Stock
- 5724 件
- Package
- SOIC-8
- Series
- PMIC-電壓調節器-線性
Replacement verdict
Compatible functional replacement candidate
The ADP3303ARZ-5 and ADP3301AR-3 are both low-dropout linear regulators from the same Analog Devices anyCAP family, sharing a common SOIC-8 footprint and similar 200 mA output current capability, but they differ in fixed output voltage (5.0 V versus 3.3 V) and shutdown/enable functionality. The ADP3303ARZ-5 is therefore not a direct drop-in substitute for the ADP3301AR-3 in a 3.3 V rail application, but it can serve as a functional replacement candidate where a 5.0 V rail is acceptable and the enable pin is properly handled.
Output Voltage
Validation required
Output Current Rating
High match
Package Type
High match
Enable / Shutdown Function
Validation required
Parts at a glance
Part B
ADP3301AR-3
ADI公司
- Lifecycle
- Active
- Stock
- 2028 件
- Package
- SOIC-8
- Series
- PMIC-電壓調節器-線性
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADP3303ARZ-5 | ADP3301AR-3 | Why it matters |
|---|---|---|---|
| Output Voltage | 5.0 V (fixed) | 3.0 V (fixed) | The regulated output voltage must match the load's required supply rail; a 5 V and 3 V part are not directly interchangeable without level considerations. |
| Maximum Output Current | 200 mA | 100 mA | The current rating determines the maximum load the regulator can supply; substituting a lower-current part may cause dropout or thermal issues. |
| Input Voltage Range | 3.2 V to 12 V | 3.0 V to 12 V | The input range must cover the available supply and maintain adequate headroom above the regulated output for proper regulation. |
| Dropout Voltage (typ) | 180 mV @ 200 mA | 120 mV @ 100 mA | Lower dropout allows operation closer to the input rail; the difference affects usable headroom and efficiency in low-voltage systems. |
| Quiescent Current (typ) | 0.9 mA | 0.7 mA | Quiescent current impacts standby power consumption, which is critical in battery-powered and always-on applications. |
| Output Noise (typ) | 30 µV rms (10 Hz–100 kHz) | 50 µV rms (10 Hz–100 kHz) | Lower output noise benefits sensitive analog and RF loads; noise differences can affect signal integrity in precision circuits. |
| Package | 8-Lead SOIC | 8-Lead SOIC | Matching package and pinout enables drop-in board replacement without layout changes. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | The temperature range must cover the application environment for reliable operation and thermal margin. |
| Regulator Type | LDO (anyCAP, low dropout) | LDO (anyCAP, low dropout) | Both are low-dropout linear regulators with stable operation across capacitor types, supporting similar circuit topologies. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADP3303ARZ-5 | ADP3301AR-3 |
|---|---|---|
| Series | anyCAP® | anyCAP® |
| Part Status | Active | Obsolete |
| Output Configuration | Positive | Positive |
| Output Type | Fixed | Fixed |
| Number of Regulators | 1 | 1 |
| Voltage - Input (Max) | 12V | 12V |
| Voltage - Output (Min/Fixed) | 5V | 3V |
| Voltage Dropout (Max) | 0.4V @ 200mA | 0.2V @ 100mA |
| Current - Output | 200mA | 100mA |
| Current - Quiescent (Iq) | 400 µA | 300 µA |
| Current - Supply (Max) | 4 mA | 2 mA |
| Control Features | Error Flag, Shutdown | Error Flag, Shutdown |
| Protection Features | Over Temperature | Over Temperature |
| Operating Temperature | -20°C ~ 85°C | -20°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the key differences between the ADP3303ARZ-5 and the ADP3301AR-3?
The ADP3303ARZ-5 is a 5.0 V fixed-output low-dropout linear regulator in an 8-lead SOIC package, while the ADP3301AR-3 is a 3.3 V fixed-output LDO in an 8-lead SOIC package. The primary differences are the output voltage (5.0 V vs 3.3 V) and the guaranteed output current rating, which should be confirmed against the respective manufacturer datasheets before design use.
Are the ADP3303ARZ-5 and ADP3301AR-3 pin-compatible?
Both devices are offered in the same 8-lead SOIC (R-8) package, but pin function assignments and external component requirements must be verified against the official Analog Devices datasheets for each part before any layout or substitution decision is made.
Can the ADP3301AR-3 be used as a drop-in replacement for the ADP3303ARZ-5?
No. The ADP3301AR-3 provides a 3.3 V output while the ADP3303ARZ-5 provides a 5.0 V output, so they are not electrically interchangeable in a design requiring a specific regulated voltage. Substitution requires validating output voltage, current capability, and external component values against the datasheets.
What package type do the ADP3303ARZ-5 and ADP3301AR-3 use?
Both parts are supplied in an 8-lead SOIC package (Analog Devices R-8 suffix). Designers should confirm the exact package drawing and thermal characteristics from the official datasheets for each device.
Do both regulators belong to the same Analog Devices product family?
Yes. Both the ADP3303 and ADP3301 are part of Analog Devices' ADP330x family of low-dropout linear regulators, sharing a common architectural lineage but differing in fixed output voltage and specified performance parameters.
What should be verified before comparing the ADP3303ARZ-5 and ADP3301AR-3 in a design?
Verify the fixed output voltage, guaranteed output current, dropout voltage, quiescent current, line and load regulation, and external capacitor requirements from the official Analog Devices datasheets for each part. Any parameter not confirmed in the datasheet should not be assumed.