Description
Laptop Chip MAXIM MAX8743 Dual Pulse-width Modulation (PWM) Controller
Description:
The MAX8743 is a dual
pulse-width modulation (PWM) controller configured for step-down (buck)
topologies that provides the high efficiency, excellent transient
response, and high DC output accuracy necessary for stepping down high-voltage
batteries to generate lowvoltage chipset and RAM power supplies in notebook
computers. The CS_ inputs can be used with low-side sense resistors to provide
accurate current limits or can be connected to LX_, using low-side MOSFETs as
current-sense elements. High output impedance in shutdown eliminates negative
output voltages, saving the cost of a Schottky diode at the output.
The on-demand PWM controllers are free running, constant on-time with input
feed-forward. This configuration provides ultra-fast transient response, wide
input-output
differential range, low supply current, and tight load-regulation
characteristics. The MAX8743 is simple and easy to compensate.
Single-stage buck conversion allows the MAX8743 to directly step down
high-voltage batteries for the highest possible efficiency. Alternatively,
two-stage conversion
(stepping down the 5V system supply instead of the battery at a higher
switching frequency) allows the minimum possible physical size.
The MAX8743 is intended for generating chipset, DRAM, CPU I/O, or other
low-voltage supplies down to 1V. The MAX8743 is available in 28-pin QSOP and
36-pin thin QFN packages.
-Controller-2.jpg)
Additional Information
- Model: MAX8743
- Shipping Weight: 0.3kg
- 24 Units in Stock
Reviews: 0
There are currently no product reviews.
NOTE: Reviews require prior approval before they will be displayed
This product was added to our catalog on Tuesday 01 March, 2011.
