MAX1672
PRODUCTIONStep-Up/Down DC-DC Converter in QSOP Package
Compact, Low-Noise, Transformerless Step-Up/Down Regulator with Single Small Inductor Has Low Output Ripple
- Part Models
- 2
- 1ku List Price
- Starting From $5.39
Overview
- Step-Up/Down Voltage Conversion
- 1.8V to 11V Input Range
- 3.3V/5V or Adjustable Output Voltage Range
- Output Current:
- 300mA at 5V (VIN > 2.5V)
- 150mA at 5V (VIN > 1.8V)
- Smaller Inductor than SEPIC and Flybacks
- Load Disconnects from Input in Shutdown
- Supply Current from Battery:
- 85µA (No-Load)
- 0.1µA (Shutdown)
- PGI/PGO-bar Low-Battery Comparator
- 16-Pin QSOP Package (Same Footprint as 8-pin SO)
- No External FETs Required
- Thermal and Short-Circuit Protection
The MAX1672 integrates a step-up DC-DC converter with a linear regulator to provide step-up/down voltage conversion. This device provides a constant output voltage for inputs that vary above and below the output voltage. It has a 1.8V to 11V input range and a preset 3.3V or 5V output. The output can also be set from 1.25V to 5.5V using two resistors. Typical efficiency is 85%.
The MAX1672's step-up/linear-regulator configuration permits the use of a single, physically smaller inductor than can be used with competing SEPIC and flyback configurations. Switch current is also selectable, permitting the use of smaller inductors in low-current applications. The linear regulator also acts as a filter to reduce output ripple voltage.
The MAX1672 has a low 85µA quiescent supply current, which is further reduced to 0.1µA in logic-controlled shutdown. The output voltage is disconnected from the input in shutdown. The MAX1672 also has a PGI/PGO-bar low-battery detector.
The MAX1672 comes in a 16-pin QSOP package (same size as a standard 8-pin SO). For a larger device that delivers more output current, refer to the MAX710/MAX711. The preassembled MAX1672 evaluation kit is available to speed designs.
Applications
- 2-Cell to 4-Cell AA Alkaline Handheld Equipment
- 3.3V and Other Low-Voltage Systems
- Battery-Powered Devices
- Digital Cameras
- Single-Cell, Lithium-Powered Portable Devices with AC Input Adapters
Documentation
Data Sheet 1
Design Note 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX1672EEE+ | QSOP | ||
| MAX1672EEE+T | QSOP |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Switching Regulators & Controllers 1 | ||
| MAX710 | PRODUCTION | 3.3V/5V or Adjustable, Step-Up Step-Down DC-DC Converters |
Evaluation Kits
Evaluation Kit for the MAX1672
Latest Discussions
No discussions on MAX1672 yet. Have something to say?
Start a Discussion on EngineerZone®