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MAX643ACPA - MAX643 Step-Up Switching Regulator Datasheet - Buy MAX643ACPA

MAX643ACPA - MAX643 Step-Up Switching Regulator


arrowFixed +5V, +12V, +15V Output Voltages

arrowAdjustable Output with 2 Resistors

arrowOn-Chip Driver for High-Power External MOSFET

arrow135µA Typ Operating Current

arrow80% Typ Efficiency

Pin Layout
Maxim MAX643CPA 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
MAX643 DIP8 Dimension Drawing

Technical Data

Data Sheet

Maxim Integrated Website - Datasheet for MAX643 Datasheet

Application Notes