sc1154 Semtech Corporation, sc1154 Datasheet - Page 8

• Manufacturer Part Number: sc1154
• Description: Programmable Synchronous Dc/dc Hysteretic Controller For Advanced Processors
• Manufacturer: Semtech Corporation

PRELIMINARY - March 1, 2000
ELECTRICAL CHARACTERISTICS (cont.)
Unless specified: 0 < T
PARAMETER
HIGH-SIDE Vds SENSING
Note 1: Guaranteed, but not tested
© 2000 SEMTECH CORP.
Response Time
Short Circuit Protection
Rising Edge Delay
Sample/Hold Switch turn-
on/turn-off Delay
POWER GOOD
Comparator Propagation
Delay
SOFTSTART
Comparator Propagation
Delay
DEADTIME
Driver Nonoverlap Time
J
< 125° C, VIN12V = 12V
(1)
SYMBOL
t
t
t
t
VDSRESP
VDSRED
SWXDLY
PWRGD
t
t
SLST
NUL
CONDITIONS
pulsed from 12v to 11.9v,
100ns rise and fall times
pulsed from 4.5v to 4.4v,
100ns rise and fall times
pulsed from 3.0v to 2.9v,
100ns rise and fall times
PROGRAMMABLE SYNCHRONOUS
DC/DC HYSTERETIC CONTROLLER
FOR ADVANCED PROCESSORS
V
V
V
LOSENSE grounded
3v < V
V
overdrive = 10mv
HISENSE
HISENSE
HISENSE
LOSENSE
HISENSE
= 12v,
= 4.5v,
= 3v,
= V
HISENSE
< 11v
652 MITCHELL ROAD NEWBURY PARK CA 91320
V
V
V
IOUTLO
IOUTLO
IOUTLO
MIN
300
30
30
TYP
560
1
MAX
500
100
900
100
2
3
3
SC1154
UNITS
µs
µs
µs
ns
ns
µs
ns
ns
8