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DEMO MANUAL DC1261A
LTM8022
36V, 1A Step-Down
μModule Regulator
DESCRIPTION
Demonstration circuit 1261A features the LTM ? 8022 step-
down μModule ? regulator delivering a 3.3V output from a
4.5V to 36V input supply. As a step-down converter, the
LTM8022 requires a minimum amount of headroom to keep
the output in regulation. The device may be synchronized
to an external clock or allowed to enter low ripple Burst
Mode ? operation at light load conditions by applying the
appropriate signal to the SYNC pin. Current sharing with
another LTM8022 is enabled by tying the VIN, VOUT and
SHARE pins together to support higher output loads.
The LTM8022 data sheet must be read in conjunction with
demo manual prior to working on or modifying demo
circuit DC1261A.
Design files for this circuit board are available at
http://www.linear.com/demo
L , LT, LTC, LTM, μModule, Burst Mode, Linear Technology and the Linear logo are registered
trademarks of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
PERFORMANCE SUMMARY
(T A = 25°C)
PARAMETER
Input Voltage Range
Output Voltage, V OUT
Maximum Output Current
Typical Switching Frequency
CONDITION
VALUE
4.5V to 36V
3.3V ±3%
1A
600kHz
BOARD PHOTO
dc1261af
1
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