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