A4402
Constant On-Time Buck Converter
With Integrated Linear Regulator
Power-Up and Power-Down Timing Diagrams
Using ENB
ENB
VIN1
V SW
V O2
NPOR
18 V
tss
6V
UVLO Rising
UVLO Falling
tpor
UVLO Rising
tpor
Using VIN1
ENB
VIN1
VSW
VO2
NPOR
VPOR
VCTSET
tss
UVLO Rising
tpor
tss
UVLO Falling
UVLO Rising
tpor
Allegro MicroSystems, Inc.
6
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com