Departments
Integrated CircuitsNeed Help
Home > Integrated Circuits > Special Function > Maxim Integrated
MAX634 Inverting Switching Regulator Datasheet
Photograph
Product Details
The MAX634 is an efficient CMOS DC-DC Inverting Regulator.
The MAX634 can convert a positive input voltage in the range of
+3V to 16.5V to a negative output voltage up to 20V.
All the necessary power and control functions are included
on the chip and only a few external components are required.
The device has a low operating current of typically 100µA.
Features
- Converts Positive Voltage to Negative Voltage
- Low Operating Current - 100µA
- High Efficiency 85% Typical
- 4% Output Voltage Accuracy
- +3V to +16.5V Input Voltage Range
- Low Battery Detector
- Adjustable Output Voltage - Up to -20V with Simple Coil
Pin Layout
Pin Description
| Pin Number | Description |
|---|---|
| 1 | LBR - Low Battery Detector Input |
| 2 | LBO - Low Battery Detector Output |
| 3 | Cx - External Connection |
| 4 | GND - Ground |
| 5 | Lx - External Inductor Output |
| 6 | Vs+ - Positive Supply Voltage |
| 7 | Vref - Voltage Reference Output |
| 8 | Vfb - Voltage Feedback |
Dimensional Drawing
Technical Data
