MC3397T Series Switch Transient Protection Circuit. Under normal opera

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MC3397T Series Switch Transient Protection Circuit. Under normal opera

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MC3397T
MC3397T Series Switch Transient Protection Circuit. Under normal operating voltage conditions, device acts saturated series pass element with very voltage drop load currents excess event over voltage condition 17.5 typ) high voltage transient either positive negative polarity, MC3397T instantaneously switches open circuit (OFF) state, interrupting power load protecting load during this potentially destructive condition. device will immediately recover state when supply voltages fall within normal operating range.
MC3397T fabricated power BIMOS process which combines best features Bipolar technologies. mixed technology provides higher gain output devices ,,:,,<', results Power Integrated Circuits with reduced quiescent. \.:i,~',!!.\ current. device operates state over wide power sk~$ voltage range withstand voltage trq$~,n$$ (positive negative) rugged output stq~&Jo'ng with active clamp circuitry, current limit thermal sh~tdown permits driving types loads includin?~ind@ktive. MC3397T specified over wide junction tem@#&@tu 40°C 125°C ideally suited industrial ~:?~motive applications where harsh environments exist.,&$~$~:$';'
OUTPUT GROUND
BLOCK DIAGRAM MC3397T
-12V
Capacitor
~S@~'to Support Load During Transient
.?.,,,
@**! ,h+.,,.;~'
Rating
Symbol Vin(t)
Value *125
Unit +125
TIMING
DIAGRAM
lnput$~oltage Continuous Input Voltage Transient
Output Current
Power Dissipation Thermal Characteristics +25°C Derate above Thermal Resistance Junction Ambient 25°C Derate above 25°C Thermal Resistance Junction Case Operating Junction Temperature Range
Internally Limited 62.5 -40to -65to +125 +150
l/OJA 1/6JA
Watts W/"C Watts mW/°C
-125V-
Storage Temperature Range
Tstg
)MOTOROLA INC., 1987
This document contains information product under development.
Motorola reserves right
NP199
ELECTRICAL CHARACTERISTICS
(Vi" 400C 125°C unless otherwise Symbol Vin(min) Vin-VO
noted)* Unit
Charaderistic Minimum Operating Voltage
Quiescent Current 150mA, +4.5V 500mA, +12V 750mA, +16V Switch Voltage Drop 150mA, t4.5V 500mA, +12v 750mA, t16V
`~;;i5Qr' 4zq"+'z, ;s'~+io
`*{,3, ,J:.:<\.w~ *,,, `~)g~:" `:-$% .$.?, ~Yi~ ,!}~.':~'. W?*{
Output Current Limit Vo=ov Output Leakage Current S55V, VO=OV Over Voltage Shutdown <700 Threshold
:$1.5 ;}*.:,, `<:l,\ +,,, ~!:<.:.
lLeak
`~<$?10 \'~>y3, S:*:*,. 17.25
Output Turn-Off Delay Time 25"C) Over Voltage Condition, stepped from <0.9 (Figure Output Recovery Delay Time 25°C) stepped from (Figure
Vin(OV) `%:~$~'"` ~!,\:>. ,.:.&.y~d, ,~:.: ,1:.,ii~;,$ `DL~4~jz, ~:i$;,'}.,: ~,,:.
18.5
"$~RCVY *J?. .\j:
Thermal Sense
Current Umit
Circuit 0.047YF
output*
Ground
NOTE *Depend]ng Load Current Transient Duration, Output Capacitor (CO) sufficient value used hold Output Voltage during Transient, absorb Turn-off Delay Voltage Overshoot.
MOTOROLA
Semiconductors
FIGURE RESPONSE TIME DIAGRAM
FIGURE SWITCH DROP versus
LOAD CURRENT
INPUT Vi"+12V OUTPUT +11,5V
~'t:'$' .,,,
FIGURE QUIESCENT CURRENT versus
~'$,$?.t,.,:
Lp~;&~RRENT
IL,OAD CURRENT (mA]
OUTLINE
DIMENSIONS
SUFFIX PLASTIC PACKAGE CASE A-03
NOTES: OIMENSION DIMENSION APPLIES LEADS. APPLIES LEADS TOLERANCING DIMENSION: INCH. ANSI
DIMENSIONING Y14.5M, 1982. CONTROLLING
Motorola resewea right make changee without further notice products herein improve reliability, function design. Motorola does asaume Iiatility arising application product circuit described herein; neither doss convey license under patent rights rights others. Motorola registered tredemarka Motorola, Inc.
MOTOROLA
Semiconductors
MOTOROLA
SemiconducteursS.A.
AVENUE G~NtRAL-EISENHOWER -31023 TOULOUSE CEDEX
Pri",ed
Great
FRANCE
B,,,,?.
T.",,,.,
P,.,
{Bedford)
*000
4,S7

MC3397T Series Switch Transient Protection Circuit. Under normal opera

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