Key facts
- Brand
- Maxim
- Model
- MAX640
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-09
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Maxim MAX639/MAX640/MAX653 High-Efficiency Low-IQ Step-Down DC-DC Converters Handbook
The MAX639, MAX640 and MAX653 are step‑down switching regulators that provide high efficiency over a wide range of load currents, delivering up to 225 mA. They operate from an input range of 4 V to 11.5 V and offer preset output voltages of 5 V, 3.3 V and 3 V, or an adjustable output from 1.3 V to the input voltage.
The document includes absolute maximum ratings, electrical characteristics, typical operating curves, pin descriptions, layout recommendations and inverter configurations. It also provides ordering information for the various package options and design tips for low‑quiescent‑current applications.
Maxim MAX640 specifications
| Input Voltage Range | 4 V to 11.5 V |
|---|---|
| Maximum Output Current | 225 mA |
| Quiescent Current (Shutdown) | 10‑20 µA |
Source: Maxim MAX639/MAX640/MAX653 High-Efficiency Low-IQ Step-Down DC-DC Converters Handbook
All Maxim MAX640 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the input voltage range for the MAX639/MAX640/MAX653 converters?
The converters operate from 4 V up to 11.5 V input.
From: Maxim MAX639/MAX640/MAX653 High-Efficiency Low-IQ Step-Down DC-DC Converters Handbook
What is the maximum output current these devices can deliver?
They can supply up to 225 mA of output current.
From: Maxim MAX639/MAX640/MAX653 High-Efficiency Low-IQ Step-Down DC-DC Converters Handbook
What is the maximum output current of the MAX639/MAX640/MAX653 converters?
They can deliver up to 225 mA of output current.
From: Maxim MAX639/MAX640/MAX653 Step-Down DC-DC Converter Datasheet
What is the quiescent current of these step‑down regulators?
The quiescent supply current is only 10 µA.
From: Maxim MAX639/MAX640/MAX653 Step-Down DC-DC Converter Datasheet