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Power Management in Mobile Devices
book

Power Management in Mobile Devices

by Findlay Shearer
April 2011
Intermediate to advanced content levelIntermediate to advanced
336 pages
13h 59m
English
Newnes
Content preview from Power Management in Mobile Devices
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www.newnespress.com
Chapter 6
switches following the regulated supply. To avoid losing regulation while delivering peak
load currents, the FETs ’
on-resistance must be suffi ciently low to ensure that the load-side
voltage remains above the minimum level specifi ed.
This switch-resistance problem is further complicated in low-voltage systems of 3.3 V and
below, because the low gate drive may not suffi ciently minimize the FET ’ s on-resistance.
The cost of low-gate-threshold FETs is declining. However, in many cases, the use of
multiple linear regulators offers a better approach. Many new linear regulators have a
logic-level shutdown capability ...
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Publisher Resources

ISBN: 9780750679589