SMT4214 Summit Microelectronics, Inc., SMT4214 Datasheet - Page 9

• Manufacturer Part Number: SMT4214
• Description: Expandable Four-rail Supply TRAKKER™ Controller
• Manufacturer: Summit Microelectronics, Inc.

AC OPERATING CHARACTERISTICS
Summit Microelectronics, Inc
TIMING DIAGRAMS
(Over recommended operating conditions, unless otherwise noted. All voltages are relative to GND.) See
Figure 2, 3, 4 and 5 Timing diagrams.
t
t
t
t
t
t
t
t
t
t
t
PRTO
UVFILT
SEATED
PWRON
DFIRQ
DFRST
DMRRST
DVIVG
DUVFS
DUVVG
DFSVG
Symbol
P W R _O N#
S E ATE D#
S oft S tart
Tracking
V G ATE s
V G ATE s
Figure 5 - Timing relationship of de-asserting the enabling inputs on the VGATE outputs.
FS #
Programmable Reset Time-Out
Period
Programmable UV Filter Time
Interval
Seated Delay Interval
Power-On Limit Interval
Delay from fault detection to IRQ#
Delay from fault detection to RST#
Delay from assertion of MR# to
RST# Active
Delay from VIX valid to VGATEX
activated
Delay UV to FS#
Delay UV to VGATE low
Delay from assertion of FS# to
VGATE clamped to ground.
Description
t
SEATED
2061 1.0 8/16/02
t
t
t
t
t
t
t
t
t
t
VGG_CAP fully charged
VGATE Capacitance =
10nF
PRTO
PRTO
PRTO
PRTO
UVFILT
UVFILT
UVFILT
UVFILT
SEATED
PWRON
= 25ms
= 50ms
= 100ms
= 200ms
= OFF
= 0.2ms
= 1.6ms
= 12.8ms
= 200ms
= 25ms
Conditions
Min.
t
-25
-25
-25
-25
PW RON
Preliminary Information
t
t
t
SEATED
PWRON
t
Typ.
UVFILT
100
PRTO
10
1
1
1
1
t
DFSVG
SMT4214
Max.
+25
+25
+25
+25
100
Unit
µs
µs
µs
ns
µs
µs
µs
%
%
%
%
9