SC1155(2000) View Datasheet(PDF) - Semtech Corporation
Part Name
Description
Manufacturer
SC1155
(Rev.:2000)
(Rev.:2000)
Semtech Corporation
SC1155 Datasheet PDF : 19 Pages
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PRELIMINARY - August 7, 2000
PROGRAMMABLE SYNCHRONOUS
DC/DC HYSTERETIC CONTROLLER
WITH VRM 9.0 VID RANGE
SC1155
DYNAMIC ELECTRICAL CHARACTERISTICS (cont.)
Unless specified: 0 < TJ < 125° C, VIN12V = 12V
PARAMETER
SYMBOL CONDITIONS
MIN
HIGH-SIDE Vds SENSING (Cont.)(1)
POWER GOOD(1)
Comparator Propagation
Delay
SOFTSTART(1)
tPWRGD
Comparator Propagation
Delay
DEADTIME(2)
tSLST
overdrive = 10mv
Driver Nonoverlap Time
LODRV(1)
tNOL
CLOWDR = 9nF, 10% threshold
30
on LOWDR
Propagation Delay
tLODRVDLY
TYP MAX UNITS
1
µs
560 900
ns
100
ns
400
ns
Notes
(1) Guaranteed, but not tested.
(2) Test circuit and timing diagram.
(3) This device is ESD sensitive. Use of standard ESD handling precautions is required.
TEST CIRCUIT
TIMING DIAGRAM
8
© 2000 SEMTECH CORP.
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