TL594 Datasheet, PDF (6/16 Pages) Texas Instruments – PULSE-WIDTH-MODULATION CONTROL CIRCUIT

TL594
ą
PULSEĆWIDTHĆMODULATION CONTROL CIRCUIT
SLVS052F − APRIL 1988 − REVISED NOVEMBER 2003
electrical characteristics over recommended operating free-air temperature range, V_CC = 15 V,
(unless otherwise noted) (continued)
dead-time control section (see Figure 2)
PARAMETER
TEST CONDITIONS
TL594C, TL594I
MIN TYP† MAX
Input bias current
Maximum duty cycle, each output
VI = 0 to 5.25 V
DTC = 0 V
−2 −10
0.45
Input threshold voltage
Zero duty cycle
Maximum duty cycle
† _{All typical values, except for parameter changes with temperature, are at TA = 25°C.}
3 3.3
0
output section
PARAMETER
TEST CONDITIONS
TL594C, TL594I
MIN TYP† MAX
Collector off-state current
VC = 40 V, VE = 0 V, VCC = 40 V
DTC and OUTPUT CTRL = 0 V,
VC = 15 V, VE = 0 V, VCC = 1 to 3 V
Emitter off-state current
VCC = VC = 40 V,
VE = 0
Collector-emitter saturation voltage
Common emitter VE = 0,
Emitter follower VC = 15 V,
IC = 200 mA
IE = −200 mA
Output control input current
VI = Vref
† _{All typical values, except for parameter changes with temperature, are at TA = 25°C.}
2 100
4 200
−100
1.1 1.3
1.5 2.5
3.5
pwm comparator section (see Figure 2)
PARAMETER
TEST CONDITIONS
TL594C, TL594I
MIN TYP† MAX
Input threshold voltage, FEEDBACK
Zero duty cycle
4 4.5
Input sink current, FEEDBACK
FEEDBACK = 0.5 V
† _{All typical values, except for parameter changes with temperature, are at TA = 25°C.}
0.3 0.7
undervoltage lockout section (see Figure 2)
PARAMETER
TEST CONDITIONS‡
TL594C, TL594I
MIN MAX
Threshold voltage
Hysteresis§
TA = 25°C
∆TA = MIN to MAX
6
3.5
6.9
100
‡ _{For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.}
§ _{Hysteresis is the difference between the positive-going input threshold voltage and the negative-going input threshold voltage.}
UNIT
µA
V
UNIT
µA
µA
V
mA
UNIT
V
mA
UNIT
V
mV
PARAMETER
TEST CONDITIONS
Standby supply current
RT at Vref,
All other inputs and outputs open
VCC = 15 V
VCC = 40 V
Average supply current
DTC = 2 V,
See Figure 2
† _{All typical values, except for parameter changes with temperature, are at TA = 25°C.}
TL594C, TL594I
MIN TYP† MAX
9
15
11
18
12.4
UNIT
mA
mA
6
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