TL1451A
DUAL PULSE WIDTH MODULATION CONTROL CIRCUITS
SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999
short-circuit protection control section
PARAMETER
TEST CONDITIONS
TA = 25°C
TA = 125°C
TA = MIN
Standby voltage (SCP)
TA = 25°C
TA = 125°C
TA = MIN
Equivalent timing resistance
Comparator threshold voltage (FEEDBACK)
† All typical values are at TA = 25°C unless otherwise indicated.
TL1451AQ, TL1451AM
MIN TYP†
MAX
650
400
800
140
700
478
880
185
60
70
60
170
1.18
750
550
950
230
120
120
120
kΩ
V
mV
mV
mV
UNIT
In ut
Input threshold voltage (SCP)
Latched input voltage (SCP)
in ut
oscillator section
PARAMETER
TEST CONDITIONS
TA = 25°C
TA = 125°C
TA = MIN
RT = 10 kΩ
TA = 25°C
TA = 125°C
TA = MIN
Frequency change with temperature
*These parameters are not production tested.
† All typical values are at TA = 25°C unless otherwise indicated.
TL1451AQ, TL1451AM
MIN
TYP†
MAX
200
195
193
2%
1%
1%
3%
1.37%
*±10%
kHz
UNIT
Frequency
Standard deviation of frequency
CT = 330 pF,
F
RT = 10 kΩ
CT = 330 pF,
VCC = 3.6 V to 40 V
Frequency change with voltage
dead-time control section
PARAMETER
Input
Inp t bias c rrent (DTC)
current
Latch mode (source) current (DTC)
TA = 25°C
TA = 125°C
TA = MIN
Zero duty cycle
Maximum duty cycle
TEST CONDITIONS
TA = 25°C
TA = MIN and 125°C
–80
2.30
2.22
2.28
*1.20
2.32
2.40
2.05
1.45
*2.25
V
V
–145
TL1451AQ, TL1451AM
MIN TYP†
MAX
1
3
UNIT
µA
A
µA
Latched in ut voltage (DTC)
input
Input threshold voltage at f = 10 kHz (DTC)
*These parameters are not production tested.
† All typical values are at TA = 25°C unless otherwise indicated.
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