sc1155csw.tr Semtech Corporation, sc1155csw.tr Datasheet - Page 8

• Manufacturer Part Number: sc1155csw.tr
• Description: Programmable Synchronous Dc/dc Hysteretic Controller With Vrm 9.0 Vid Range
• Manufacturer: Semtech Corporation

PRELIMINARY - August 7, 2000
DYNAMIC ELECTRICAL CHARACTERISTICS (cont.)
Unless specified: 0 < T
PARAMETER
HIGH-SIDE Vds SENSING (Cont.)
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
© 2000 SEMTECH CORP.
POWER GOOD
Comparator Propagation
Delay
SOFTSTART
Comparator Propagation
Delay
DEADTIME
Driver Nonoverlap Time
LODRV
Propagation Delay
(1)
(2)
(1)
(1)
J
< 125° C, VIN12V = 12V
SYMBOL
t
LODRVDLY
t
(1)
PWRGD
t
t
SLST
NOL
CONDITIONS
on LOWDR
PROGRAMMABLE SYNCHRONOUS
DC/DC HYSTERETIC CONTROLLER
WITH VRM 9.0 VID RANGE
overdrive = 10mv
C
LOWDR
= 9nF, 10% threshold
TIMING DIAGRAM
MIN
30
TYP
560
1
MAX
900
100
400
SC1155
UNITS
µs
ns
ns
ns
8