Key facts
- Brand
- Analog Devices
- Model
- ADP3309
- Category
- Other Electronics
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-04
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ANALOG DEVICES ADP3309handbookRev C
The ADP3309 is a precision low‑dropout (LDO) linear regulator offering ±1.2 % accuracy, ultra‑low dropout voltage (120 mV typical at 100 mA) and operation over a 2.8 V‑12 V input range. It requires only a 0.47 µF output capacitor for stability and works with any capacitor type, including MLCCs.
Typical applications include cellular phones, notebook computers, battery‑powered systems, PCMCIA regulators, bar‑code scanners, and camcorders. The document provides functional block diagrams, pin descriptions, performance curves, thermal protection details, PCB layout recommendations, and example circuits for higher current or dual‑output configurations.
Analog Devices ADP3309 specifications
| Output Voltage Accuracy | ±1.2 % typical |
|---|---|
| Ground Current (typical) | 0.8 mA – 2.0 mA |
| Shutdown Threshold | On 2.0 V, Off 0.3 V |
| Shutdown Pin Input Current (0‑5 V) | 1 µA |
All Analog Devices ADP3309 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
How much output capacitance is required for stability?
Only a 0.47 µF output capacitor is needed for stable operation.
What is the shutdown current of the ADP3309?
In shutdown mode the ground current is reduced to about 1 pA.
From: Analog Devices ADP3309 Low Dropout Linear Regulator Datasheet
What input voltage range does the ADP3309 support?
The regulator operates with an input voltage range from 2.8 V to 12 V.
From: Analog Devices ADP3309 Low Dropout Linear Regulator Datasheet