TLC598 Datasheet, PDF (5/10 Pages) Texas Instruments – PULSE-WIDTH-MODULATION CONTROL CIRCUITS

TL598
PULSE-WIDTH-MODULATION CONTROL CIRCUITS
SLVS053C – FEBRUARY 1988 – REVISED JULY 1999
electrical characteristics over recommended operating free-air temperature range, V_CC = 15 V
(unless otherwise noted)
undervoltage lockout section (see Note 4)
PARAMETER
TEST CONDITIONS†
TL598C
MIN MAX
TL598Q
UNIT
MIN MAX
Threshold voltage
TA = 25°C
∆TA = full range
4
6
3.5 6.9
4
6
V
3 6.9
Hysteresis‡
TA = 25°C
TA = full range
100
100
mV
50
30
† _{Full range is 0°C to 70°C for the TL598C, and –40°C to 125°C for the TL598Q.}
‡ _{Hysteresis is the difference between the positive-going input threshold voltage and the negative-going input threshold voltage.}
NOTE 4. Pulse-testing techniques must be used that maintain the junction temperature as close to the ambient temperature as possible.
output section (see Note 4)
PARAMETER
TEST CONDITIONS
TL598C, TL598Q
UNIT
MIN MAX
High-level output voltage
Low-level output voltage
Output-control input current
VCC = 15 V,
VC = 15 V
VCC = 15 V,
VC = 15 V
VI = Vref
VI = 0.4 V
IO = –200 mA
IO = –20 mA
IO = 200 mA
IO = 20 mA
12
V
13
2
V
0.4
3.5 mA
100 µA
NOTE 4. Pulse-testing techniques must be used that maintain the junction temperature as close to the ambient temperature as possible.
dead-time control section (see Figure 1) (see Note 4)
PARAMETER
TEST CONDITIONS
TL598C
MIN TYP§ MAX
TL598Q
MIN TYP§ MAX ^UNIT
Input bias current (DTC)
Maximum duty cycle, each output
VI = 0 to 5.25 V
DTC = 0 V
–2 –10
–2 –25 µA
0.45
0.45
Input threshold voltage (DTC)
Zero duty cycle
Maximum duty cycle
3 3.3
3 3.2
V
0
0
§ _{All typical values except for parameter changes with temperature are at TA = 25°C.}
NOTE 4. Pulse-testing techniques must be used that maintain the junction temperature as close to the ambient temperature as possible.
pwm comparator section (see Note 4)
PARAMETER
TEST CONDITIONS
TL598C, TL598Q
MIN TYP§ MAX ^UNIT
Input threshold voltage (FEEDBACK)
DTC = 0 V
3.75 4.5 V
Input sink current (FEEDBACK)
V(FEEDBACK) = 0.5 V
0.3 0.7
mA
§ _{All typical values except for parameter changes with temperature are at TA = 25°C.}
NOTE Pulse-testing techniques must be used that maintain the junction temperature as close to the ambient temperature as possible.
total device (see Figure 1) (see Note 4)
PARAMETER
TEST CONDITIONS
TL598C, TL598Q
MIN TYP§ MAX ^UNIT
Standby supply current
RT = Vref,
All other inputs and outputs open
VCC = 15 V
VCC = 40 V
15
21
mA
20
26
Average supply current
DTC = 2 V
15
mA
§ _{All typical values except for parameter changes with temperature are at TA = 25°C.}
NOTE 4. Pulse-testing techniques must be used that maintain the junction temperature as close to the ambient temperature as possible.
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