TheL6221monolithicquad darlingtonswitch isdesignedforhighcurrent,highvoltageswitchingapplications.Eachof the four switchesiscontrolledby a
logicinput and all fourare controlledby a common
enableinput.AllinputsareTTL-compatiblefordirect
connectionto logiccircuits.
outputsofthe same devicemay be paralleled.
Threeversionsare available: theL6221Cmounted
ina Powerdip12+ 2 +2 packageandthe L6221CN
mounted in a 15--lead Multiwatt package, the
L6221CDin SO16+2+2package.
Input Voltage, Enable VoltageV
Continuous Colllector Current (for each channel)
C
for L6221CD
Collector Peak Current (repetitive, duty cycle = 10% ton = 5ms)
C
for L6221CD
Collector Peak Current (non repetitive, t = 10µs)
C
for L6221CD
Operating Temperature Range (junction)-40 to +150
op
Storage Temperature Range-55 to +150
stg
S
1.8
1.2
2.5
1.7
3.2
2.2
Output Substrate Current350mA
Total Power Dissipation
tot
=90°C (powerdip)
at T
pins
at T
at T
at T
at T
at T
=90°C (multiwatt)
case
=90°C (SO20)
case
=70°C (powerdip)
amb
=70°C (multiwatt)
amb
=70°C (SO20)
amb
4.3
20
3.5
1
2.3
1
A
A
A
A
A
A
C
°
C
°
W
W
W
W
W
W
TRUTHTABLE
EnableInputPower Out
H
H
L
For each input : H = High level
L = Low level
X = Don’t care
H
L
X
PIN FUNCTIONS(seeblock diagram)
NameFunction
IN 1Input to Driver 1
IN 2Input to Driver 2
OUT 1Output of Driver 1
OUT 2Output of Driver 2
CLAMP ADiode Clamp to Driver 1 and Driver 2
IN 3Input to Driver 3
IN 4Input to Driver 4
OUT 3Output of Driver 3
OUT 4Output of Driver 4
CLAMP BDiode Clamp to Driver3 and Driver 4
ENABLEEnable Input to All Drivers
VSLogic Supply Voltage
GNDCommon Ground