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TL1451AQPWRQ1 Scheda tecnica(PDF) 5 Page - Texas Instruments

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Il numero della parte TL1451AQPWRQ1
Spiegazioni elettronici  DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS
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Produttore elettronici  TI1 [Texas Instruments]
Homepage  http://www.ti.com
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TL1451AQPWRQ1 Scheda tecnica(HTML) 5 Page - Texas Instruments

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TL1451A-Q1
DUAL PULSEWIDTHMODULATION CONTROL CIRCUITS
SGLS304A − JUNE 2005 − REVISED JUNE 2008
5
www.ti.com
short-circuit protection control section
PARAMETER
TEST CONDITIONS
TL1451AQ
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP†
MAX
UNIT
TA = 25°C
650
700
750
Input threshold voltage (SCP)
TA = 125°C
400
478
650
mV
Input threshold voltage (SCP)
TA = MIN
800
880
950
mV
Standby voltage (SCP)
140
185
230
mV
TA = 25°C
60
120
Latched input voltage (SCP)
TA = 125°C
70
120
mV
Latched input voltage (SCP)
TA = MIN
60
120
mV
Equivalent timing resistance
170
k
Comparator threshold voltage (FEEDBACK)
1.18
V
† All typical values are at TA = 25°C unless otherwise indicated.
oscillator section
PARAMETER
TEST CONDITIONS
TL1451AQ
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP†
MAX
UNIT
CT = 330 pF,
TA = 25°C
200
Frequency
CT = 330 pF,
RT = 10 kΩ
TA = 125°C
195
kHz
Frequency
RT = 10 kΩ
TA = MIN
193
kHz
Standard deviation of frequency
CT = 330 pF,
RT = 10 kΩ
2%
TA = 25°C
1%
Frequency change with voltage
VCC = 3.6 V to 40 V
TA = 125°C
1%
Frequency change with voltage
VCC = 3.6 V to 40 V
TA = MIN
3%
Frequency change with temperature
1.37%
±10%}
† All typical values are at TA = 25°C unless otherwise indicated.
‡ These parameters are not production tested.
dead-time control section
PARAMETER
TEST CONDITIONS
TL1451AQ
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP†
MAX
UNIT
Input bias current (DTC)
TA = 25°C
1
A
Input bias current (DTC)
TA = MIN and 125°C
3
µA
Latch mode (source) current (DTC)
−80
−145
µA
TA = 25°C
2.3
Latched input voltage (DTC)
TA = 125°C
2.22
2.32
V
Latched input voltage (DTC)
TA = MIN
2.28
2.4
V
Input threshold voltage at f = 10 kHz (DTC)
Zero duty cycle
2.05
2.25}
V
Input threshold voltage at f = 10 kHz (DTC)
Maximum duty cycle
1.2}
1.45
V
† All typical values are at TA = 25°C unless otherwise indicated.
‡ These parameters are not production tested.


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