TL1451A
DUAL PULSE WIDTH MODULATION CONTROL CIRCUITS
SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999
electrical characteristics over recommended operating free-air temperature range, V
CC
= 6 V,
f = 200 kHz (unless otherwise noted)
reference section
TL1451AQ, TL1451AM
PARAMETER
TEST CONDITIONS
TA = 25°C
TA = MIN and 125°C
TA = 25°C
TA = 125°C
TA = MIN
TA = 25°C
Out ut
Output voltage regulation
Short-circuit output current
IO = 0.1 mA to 1 mA
TA = 125°C
TA = MIN
3
MIN
2.40
2.35
TYP†
2.50
2.46
–0.63%
2.0
0.7
0.3
1.0
0.3
0.3
10
MAX
2.60
2.65
*±4%
12.5
15
30
7.5
14
20
30
mA
mV
mV
V
UNIT
Output oltage
O tp t voltage (pin 16)
Output voltage change with temperature
IO = 1 mA
Input voltage regulation
In ut
VCC = 3.6 V to 40 V
VO = 0
*These parameters are not production tested.
† All typical values are at TA = 25°C unless otherwise indicated.
undervoltage lockout section
TL1451AQ, TL1451AM
PARAMETER
TEST CONDITIONS
TA = 25°C
TA = 125°C
TA = MIN
TA = 25°C
Lower threshold voltage (VCC)
TA = 125°C
TA = MIN
TA = 25°C
TA = 125°C
TA = MIN
TA = 25°C
Reset threshold voltage (VCC)
g (
† All typical values are at TA = 25°C unless otherwise indicated.
TA = 125°C
TA = MIN
80
10
10
1.50
0.95
1.50
V
MIN
TYP†
2.72
1.70
3.15
2.60
1.65
3.09
120
50
60
mV
V
V
MAX
UNIT
U er
Upper threshold voltage (VCC)
Hysteresis (VCC)
6
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