ADP122 5.5 V Input, 300 mA, Low Quiescent Current, CMOS Linear Regulator, Fixed Output Voltage
The ADP122/ADP123 are low quiescent current, low dropout
linear regulators. They are designed to operate from an input
voltage between 2.3 V and 5.5 V and to provide up to 300 mA of output current. The low 85 mV dropout voltage at a 300 mA load
improves efficiency and allows operation over a wide input
voltage range.
The low 170 μA of quiescent current at full load makes the ADP122
ideal for battery-operated portable equipment.
The ADP122 is capable of 31 fixed output voltages from 1.75 V
to 3.3 V. The ADP123 is the adjustable version of the device and
allows the output voltage to be set between 0.8 V and 5.0 V by an external voltage divider.
The ADP122/ADP123 are specifically designed for stable operation
with tiny 1 μF ceramic input and output capacitors to meet the
requirements of high performance, space constrained applications.
The ADP122/ADP123 have an internal soft start that gives a
constant start-up time of 350 μs. Short-circuit protection and
thermal overload protection circuits prevent damage in adverse conditions. The ADP122/ADP123 are available in a tiny, 5-lead
TSOT package and 6-lead LFCSP package for the smallest
footprint solution to meet a variety of portable applications.
APPLICATIONS
- Digital camera and audio devices
- Portable and battery-powered equipment
- Automatic meter reading (AMR) meters
- GPS and location management units
- Medical instrumentation
- Point-of-sale equipment
Features and Benefits- Input voltage supply range: 2.3 V to 5.5 V
- 300 mA maximum output current
- Fixed and adjustable output voltage versions
- Very low dropout voltage: 85 mV at 300 mA load
- Low quiescent current: 45 μA at no load
- Low shutdown current: <1 μA
- Initial accuracy: ±1% accuracy
- See Data Sheet for additional features
| Design Tools |
Data Sheets
Application Notes
User Guides
Frequently Asked Questions
Order Information
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|
| ADP122ACPZ-1.8-R7 Production | 6 ld LFCSP (2x2 w/1x1.6 EP) | REEL 3000 | -40 to 125C | 0 | 0.34 | Y |
| ADP122ACPZ-2.0-R7 Last Time Buy | 6 ld LFCSP (2x2 w/1x1.6 EP) | REEL 3000 | -40 to 125C | 0 | 0.34 | Y |
| ADP122ACPZ-2.5-R7 Last Time Buy | 6 ld LFCSP (2x2 w/1x1.6 EP) | REEL 3000 | -40 to 125C | 0 | 0.34 | Y |
| ADP122ACPZ-2.6-R7 Last Time Buy | 6 ld LFCSP (2x2 w/1x1.6 EP) | REEL 3000 | -40 to 125C | 0 | 0.34 | Y |
| ADP122ACPZ-2.8-R7 Last Time Buy | 6 ld LFCSP (2x2 w/1x1.6 EP) | REEL 3000 | -40 to 125C | 0 | 0.34 | Y |
| ADP122ACPZ-3.0-R7 Production | 6 ld LFCSP (2x2 w/1x1.6 EP) | REEL 3000 | -40 to 125C | 0 | 0.34 | Y |
| ADP122ACPZ-3.3-R7 Production | 6 ld LFCSP (2x2 w/1x1.6 EP) | REEL 3000 | -40 to 125C | 0 | 0.34 | Y |
| ADP122AUJZ-1.8-R7 Last Time Buy | 5 ld TSOT | REEL 3000 | -40 to 125C | 0 | 0.34 | Y |
| ADP122AUJZ-2.5-R7 Production | 5 ld TSOT | REEL 3000 | -40 to 125C | 0 | 0.34 | Y |
| ADP122AUJZ-2.7-R7 Production | 5 ld TSOT | REEL 3000 | -40 to 125C | 0 | 0.34 | Y |
| ADP122AUJZ-2.8-R7 Production | 5 ld TSOT | REEL 3000 | -40 to 125C | 0 | 0.34 | Y |
| ADP122AUJZ-2.85-R7 Production | 5 ld TSOT | REEL 3000 | -40 to 125C | 0 | 0.34 | Y |
| ADP122AUJZ-2.9-R7 Production | 5 ld TSOT | REEL 3000 | -40 to 125C | 0 | 0.34 | Y |
| ADP122AUJZ-3.0-R7 Production | 5 ld TSOT | REEL 3000 | -40 to 125C | 0 | 0.34 | Y |
| ADP122AUJZ-3.3-R7 Production | 5 ld TSOT | REEL 3000 | -40 to 125C | 0 | 0.34 | Y |
Evaluation Boards
| Part Number | Description | Price | RoHS |
|---|
| ADP122-3.3-EVALZ | Evaluation Board | 60 | Y |
| ADP122UJZ-REDYKIT | Evaluation Board | 45 | Y |
