Key facts
- Brand
- Analog Devices
- Model
- ADM8828
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-05
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Analog Devices ADM8828/ADM8829 Datasheet Rev A
The ADM8828/ADM8829 is a switched‑capacitor charge‑pump voltage inverter that generates a negative supply from a positive input ranging from +1.5 V to +5.5 V. It delivers up to 25 mA output current with over 99 % conversion efficiency and includes a low‑power shutdown pin that reduces quiescent current to 20 nA.
The device is offered in a 6‑lead SOT‑23 (RT‑6) package and requires only two external capacitors. Detailed specifications, typical performance curves, and mechanical dimensions are provided, along with guidance on capacitor selection and shutdown operation.
Analog Devices ADM8828 specifications
| Input Voltage | 1.5 V to 5.5 V |
|---|---|
| Supply Current (quiescent, unloaded) | 600 pA to 1000 pA |
| Output Current | 25 mA |
| Output Ripple | 25 mV p‑p (L=5 mA) |
| Charge‑Pump Frequency | 50 kHz to 190 kHz |
| Power Efficiency | 90 % (typical) |
| Voltage Conversion Efficiency | 99.5 % to 99.96 % |
| Shutdown Supply Current | 0.02 pA to 2 pA |
| Shutdown Input Voltage | 2.0 V (high disabled, low enabled) |
| Shutdown Exit Time | 175 µs |
All Analog Devices ADM8828 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
How many external capacitors are required for the ADM8828/ADM8829?
Only two small external capacitors are needed for the charge‑pump operation.
What package does the ADM8828 use?
The ADM8828 is available in a 6‑lead SOT‑23 (RT‑6) package.