Datasheet

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SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999
9
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total device
PARAMETER
TEST CONDITIONS
TL1451AQ, TL1451AM
UNIT
PARAMETER TEST CONDITIONS
MIN TYP
†
MAX
UNIT
Standby supply current Off-state 1.3 1.8 mA
Average supply current R
T
= 10 kΩ 1.7 2.4 mA
†
All typical values are at T
A
= 25°C unless otherwise indicated.
PARAMETER MEASUREMENT INFORMATION
87654321
910111213141516
S1
C
PE
0.47 µF
Test
Input
V
CC
= 5 V
R
L
4.7 kΩ
4.7 kΩ
R
L
OUT1
OUT2
C
T
330 pF
R
T
10 kΩ
Test
Input
TL1451A
Figure 1. Test Circuit
Dead Time 100%
t
pe
†
2.0 V
1.6 V
1.4 V
1.25 V
H
L
H
L
0.6 V
0 V
H
L
3.6 V
0 V
Oscillator Triangle Waveform
Error Amplifier Output
Dead-Time Input Voltage
Short-Circuit Protection
Comparator Input Voltage
PWM Comparator Output Voltage
Output Transistor Collector
Waveform
Protection Enable
Terminal Waveform
Short-Circuit Protection
Comparator Output
Power Supply Voltage
†
Protection Enable Time, t
pe
= (0.051 x 10
6
x C
pe
) in seconds
2.8 V TYP
Figure 2. TL1451A Timing Diagram