MIC22600_11 Datasheet, PDF (15/32 Pages) Micrel Semiconductor – 1MHz, 6A Integrated Switch Synchronous Buck Regulator

Micrel, Inc.
In the first case, driving RC with a voltage from 0V to
V_REF programs the output voltage between 0 and 100%
of the nominal set voltage.
In the second case, the external capacitor sets the ramp
up and ramp down time of the output voltage. The time
is
given
by
T _RAMP
=
0.7 ⋅ C_RC
1.10 ^−6
where T_RAMP is the time
from 0 to 100% nominal output voltage.
RC pin cannot be left floating. Use a minimum capacitor
value of 220pF or larger.
Sequencing and Tracking Examples
There are four distinct variations which are easily
implemented using the MIC22600. The two sequencing
variations are Delayed and Windowed. The two tracking
variants are Normal and Ratio Metric. The following
diagrams illustrate methods for connecting two
MIC22600’s to achieve these requirements.
MIC22600
June 2011
15
M9999-062411-D