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MAX641 Step-Up Switching Regulator Datasheet
Photograph
Product Details
The MAX641 is a low-power, step-up dc-dc converter supplying a
regulated 5V output.
The MAX641 has an input voltage of 3V and only requires an external filter capaitor
and inductor for operation.
The device has a typical operating efficiency of 80% and includes low-battery detection on chip.
Features
- Fixed +5V Output Voltage
- Adjustable Output with 2 Resistors
- On-Chip Driver for High-Power External MOSFET
- 135µA Typ Operating Current
- 80% Typ Efficiency
- Current-Limiting PFM Control Scheme
Pin Layout
Pin Description
| Pin Number | Description |
|---|---|
| 1 | LBI - Low Battery Input |
| 2 | LBO - Low Battery Output |
| 3 | GND - Ground |
| 4 | LX - MOSFET Drain |
| 5 | VOUT - Output Voltage Sense Input |
| 6 | EXT - External Power MOSFET |
| 7 | VFB - Voltage Feedback |
| 8 | COMP - Compensation Input |
Dimensional Drawing
Technical Data
