Part A
ADP3334ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4363 Stückzahl
- Package
- SOIC-8
- Series
- PMIC Spannungsregler für Spannung
Replacement verdict
Compatible functional replacement candidate
The ADP3334ARZ and ADP3301AR-3.2 are both low-dropout linear regulators in the same SOIC-8 package with comparable input voltage ranges, making the ADP3334ARZ a viable functional substitute for the ADP3301AR-3.2 in many designs. However, the adjustable output of the ADP3334ARZ versus the fixed 3.2 V output of the ADP3301AR-3.2, along with differences in output current capability and quiescent current, must be validated against the target application before substitution.
Output Voltage Configuration
Validation required
Output Current Rating
Validation required
Package Type
High match
Quiescent Current
Validation required
Parts at a glance
Part B
ADP3301AR-3.2
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3160 Stückzahl
- Package
- SOIC-8
- Series
- PMIC Spannungsregler für Spannung
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADP3334ARZ | ADP3301AR-3.2 | Why it matters |
|---|---|---|---|
| Output Voltage | Adjustable (1.5 V to 10 V) | 3.2 V (fixed) | Determines whether the part can directly supply the required rail voltage; a fixed 3.2 V output cannot be set to other voltages without external components. |
| Output Current (Max) | 500 mA | 100 mA | Defines the maximum load the regulator can support; substituting a lower-current part may cause dropout or thermal issues under heavier loads. |
| Input Voltage Range | 2.7 V to 12 V | 3.0 V to 12 V | Sets the allowable supply headroom; a narrower minimum input may prevent operation from lower-voltage sources. |
| Dropout Voltage | 200 mV @ 500 mA | 180 mV @ 100 mA | Affects the minimum input-to-output differential needed for regulation; higher dropout reduces usable headroom in low-voltage systems. |
| Quiescent Current | 140 µA (typical) | 70 µA (typical) | Impacts standby power consumption; a higher quiescent current shortens battery life in portable applications. |
| Output Noise | Not specified in datasheet | Not specified in datasheet | Noise performance affects sensitive analog or RF loads; both parts lack a published noise figure, so this cannot be used to differentiate them. |
| Package | 8-Lead SOIC | 8-Lead SOIC | Package compatibility determines whether a drop-in replacement is possible on an existing PCB footprint. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Confirms both parts are rated for the same industrial temperature envelope, so environmental suitability is equivalent. |
| Enable / Shutdown Control | Yes (active-high EN pin) | Yes (active-high EN pin) | Both support logic-controlled shutdown, allowing power management in low-power states; equivalent behavior simplifies substitution. |
Need help validating a replacement?
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADP3334ARZ | ADP3301AR-3.2 |
|---|---|---|
| Series | anyCAP® | anyCAP® |
| Part Status | Active | Obsolete |
| Output Configuration | Positive | Positive |
| Output Type | Adjustable | Fixed |
| Number of Regulators | 1 | 1 |
| Voltage - Input (Max) | 11V | 12V |
| Voltage - Output (Min/Fixed) | 1.5V | 3.2V |
| Voltage Dropout (Max) | 0.4V @ 500mA | 0.2V @ 100mA |
| Current - Output | 500mA | 100mA |
| Current - Quiescent (Iq) | 130 µA | 300 µA |
| Current - Supply (Max) | 10 mA | 2 mA |
| Control Features | Feedback, Shutdown | Error Flag, Shutdown |
| Protection Features | Over Current, Over Temperature | Over Temperature |
| Operating Temperature | -40°C ~ 85°C (TA) | -20°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Voltage - Output (Max) | 10V | - |
Frequently asked questions
What are the key differences between the ADP3334ARZ and ADP3301AR-3.2?
The ADP3334ARZ is an adjustable low-dropout linear regulator in an 8-lead SOIC package, while the ADP3301AR-3.2 is a fixed 3.2 V output LDO in an 8-lead SOIC package. The ADP3334ARZ uses an external resistor divider to set the output voltage, whereas the ADP3301AR-3.2 provides a factory-trimmed 3.2 V output. Both are members of Analog Devices' anyCAP family, but they differ in output configuration and specified performance parameters.
Can the ADP3334ARZ and ADP3301AR-3.2 be substituted for each other directly?
No, they are not direct drop-in substitutes. The ADP3334ARZ is adjustable and requires external feedback resistors to set the output voltage, while the ADP3301AR-3.2 is a fixed 3.2 V regulator. A replacement requires verifying output voltage configuration, external component changes, and load/line performance against the target design.
What output voltage does each regulator provide?
The ADP3334ARZ is an adjustable output regulator, with the output set by an external resistor divider. The ADP3301AR-3.2 provides a fixed 3.2 V output. Designers should confirm the exact output tolerance and adjustment method from the respective Analog Devices datasheets.
What package type do the ADP3334ARZ and ADP3301AR-3.2 use?
Both devices are offered in an 8-lead SOIC package (the "ARZ" and "AR" suffixes indicate SOIC packaging in Analog Devices nomenclature). PCB land patterns and pin functions should still be verified against each device's datasheet before layout or replacement.
Are the ADP3334ARZ and ADP3301AR-3.2 part of the same regulator family?
Yes, both are Analog Devices anyCAP low-dropout linear regulators. The anyCAP family is designed for stable operation with a wide range of output capacitor types, including low-ESR ceramic capacitors. Specific stability and capacitor requirements should be confirmed in each device's datasheet.
What should be verified before replacing one part with the other in an existing design?
Verify the output voltage configuration (adjustable vs. fixed 3.2 V), external feedback resistor network, input and output capacitor requirements, dropout voltage, load current rating, and thermal performance. All parameters must be checked against the official Analog Devices datasheets for both the ADP3334ARZ and ADP3301AR-3.2 before substitution.