Part A
ADP3303ARZ-5
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 5724 PCS
- Package
- SOIC-8
- Series
- PMIC - régulateur de tension - linéaire
Replacement verdict
Compatible functional replacement candidate
The ADP3303ARZ-5 and ADP3301AR-5 are both 5 V fixed-output linear regulators from the ADP3301/ADP3303 family, sharing the same SOIC-8 package and 200 mA output current rating, so the ADP3301AR-5 can serve as a functional substitute for the ADP3303ARZ-5 in many applications. However, the ADP3303ARZ-5 adds an error-flag output and shutdown control that the ADP3301AR-5 does not provide, so designs relying on those supervisory features require validation before substitution.
Output Voltage
High match
Output Current Rating
High match
Package Type
High match
Control and Supervisory Features
Validation required
Parts at a glance
Part B
ADP3301AR-5
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 9121 PCS
- Package
- SOIC-8
- Series
- PMIC - régulateur de tension - linéaire
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-5 | Why it matters |
|---|---|---|---|
| Output Voltage | 5.0 V (fixed) | 5.0 V (fixed) | Both provide the same regulated output, so the target rail voltage is identical for substitution. |
| Maximum Output Current | 200 mA | 100 mA | The ADP3303 can supply twice the load current, which affects whether it can replace the ADP3301 in higher-current designs. |
| Number of Pins / Package | 8-lead SOIC (SOIC-8) | 8-lead SOIC (SOIC-8) | Package and pin count determine board footprint and whether a drop-in replacement is physically possible. |
| Dropout Voltage (typ) | ~180 mV at 200 mA | ~120 mV at 100 mA | Lower dropout allows operation closer to the input voltage limit; the values differ because they are specified at different load currents. |
| Quiescent / Ground Current (typ) | ~0.9 mA | ~0.6 mA | Ground current affects standby power consumption, which is important in battery-powered applications. |
| Input Voltage Range | 3.2 V to 12 V | 3.2 V to 12 V | The input range defines compatibility with the upstream supply; matching ranges simplify substitution. |
| Enable / Shutdown Pin | Yes (SD pin) | Yes (SD pin) | Both offer shutdown control, so power-management behavior is preserved when swapping parts. |
| Output Noise (typ) | ~140 µV rms (10 Hz–100 kHz) | ~140 µV rms (10 Hz–100 kHz) | Noise performance affects sensitive analog loads; similar noise levels mean comparable signal integrity. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Identical temperature ratings ensure the replacement meets the same environmental requirements. |
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-5 |
|---|---|---|
| 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 | 5V |
| 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 ADP3301AR-5?
The ADP3303ARZ-5 is a 200 mA low-dropout linear regulator in an 8-lead SOIC package, while the ADP3301AR-5 is a 100 mA LDO in an 8-lead SOIC package. Both are fixed 5.0 V output regulators from Analog Devices, but the ADP3303 offers higher output current capability and includes an adjustable/selectable output voltage feature via external resistors, whereas the ADP3301 is a fixed-output device.
Are the ADP3303ARZ-5 and ADP3301AR-5 pin-compatible?
Both devices are offered in 8-lead SOIC packages, but pin functions differ. The ADP3303ARZ-5 includes additional pins for noise bypass and output voltage setting, while the ADP3301AR-5 has a different pin assignment. Designers must verify pin functions against the respective datasheets before considering any board-level substitution.
What is the maximum output current of each regulator?
The ADP3303ARZ-5 is rated for a maximum output current of 200 mA, while the ADP3301AR-5 is rated for 100 mA. The higher current capability of the ADP3303 makes it suitable for loads that exceed the ADP3301's rating.
Do both parts have the same fixed output voltage?
Yes, both the ADP3303ARZ-5 and ADP3301AR-5 are fixed 5.0 V output versions. The "-5" suffix in both part numbers denotes the 5.0 V output option within their respective families.
What package type do these regulators use?
Both the ADP3303ARZ-5 and ADP3301AR-5 are supplied in 8-lead SOIC (Small Outline Integrated Circuit) packages. The "ARZ" and "AR" suffixes in the part numbers indicate the SOIC package option from Analog Devices.
Can the ADP3301AR-5 be used as a drop-in replacement for the ADP3303ARZ-5?
No, a direct drop-in replacement is not recommended. Although both are 5.0 V LDOs in 8-lead SOIC packages, they differ in output current rating (100 mA vs. 200 mA), pin functions, and internal architecture. The replacement must be validated against the target design's load current, pin configuration, and stability requirements using the manufacturer datasheets.
What are the typical applications for these LDO regulators?
Both the ADP3303ARZ-5 and ADP3301AR-5 are used in low-noise, low-dropout voltage regulation applications such as battery-powered equipment, portable instrumentation, and post-regulation of switching supplies. The ADP3303ARZ-5 is preferred where higher load current (up to 200 mA) is required, while the ADP3301AR-5 suits lower-current (up to 100 mA) designs.