TL1451A_15 Datasheet, PDF (8/36 Pages) Texas Instruments – DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS

TL1451A
ą
DUAL PULSEĆWIDTHĆMODULATION CONTROL CIRCUITS
ą
SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999
error-amplifier section
PARAMETER
TEST CONDITIONS
TL1451AQ, TL1451AM
MIN TYP^† MAX
Input offset voltage
Input offset current
Input bias current
Common-mode input voltage range
TA = 25°C
VO (FEEDBACK) = 1.25 V TA = 125°C
TA = MIN
TA = 25°C
VO (FEEDBACK) = 1.25 V TA = 125°C
TA = MIN
TA = 25°C
VO (FEEDBACK) = 1.25 V TA = 125°C
TA = MIN
1.05
VCC = 3.6 V to 40 V
to
1.45
±6
±10
±12
±100
±100
±200
160 500
100 500
142 700
Open-loop voltage amplification
Unity-gain bandwidth
RF = 200 kΩ
TA = 25°C
70
80
TA = 125°C
70
80
TA = MIN
64
80
1.5
Common-mode rejection ratio
60
80
Positive output voltage swing
2
Negative output voltage swing
1
TA = 25°C
0.5
1.6
Output (sink) current (FEEDBACK)
VID = –0.1 V, VO = 1.25 V TA = 125°C
0.4
1.8
TA = MIN
0.3
1.7
TA = 25°C
–45
–70
Output (source) current (FEEDBACK)
VID = 0.1 V, VO = 1.25 V TA = 125°C
–25
–50
† _{All typical values are at TA = 25°C unless otherwise indicated.}
TA = MIN
–15
–70
output section
PARAMETER
TEST CONDITIONS
TL1451AQ, TL1451AM
MIN TYP^† MAX
Collector off-state current
Output saturation voltage
Short-circuit output current
† _{All typical values are at TA = 25°C unless otherwise indicated.}
VO = 50 V
TA = 25°C
TA = 125°C
TA = MIN
VO = 6 V
10
1.20 2.0
1.60 2.4
1.36 2.2
90
pwm comparator section
PARAMETER
TL1451AQ, TL1451AM
TEST CONDITIONS _{MIN TYP† MAX}
Input threshold voltage at f = 10 kHz (FEEDBACK)
Zero duty cycle
Maximum duty cycle
*1.20
2.05 *2.25
1.45
*These parameters are not production tested.
† _{All typical values are at TA = 25°C unless otherwise indicated.}
UNIT
mV
nA
nA
V
dB
MHz
dB
V
V
mA
µA
UNIT
µA
V
mA
UNIT
V
8
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