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TL494 数据表(PDF) 6 Page - Texas Instruments

部件名 TL494
功能描述  TL494 Pulse-Width-Modulation Control Circuits
Download  33 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

TL494 数据表(HTML) 6 Page - Texas Instruments

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TL494
SLVS074G – JANUARY 1983 – REVISED JANUARY 2015
www.ti.com
7.8 Electrical Characteristics, Output Section
PARAMETER
TEST CONDITIONS
MIN
TYP(1)
MAX
UNIT
Collector off-state current
VCE = 40 V, VCC = 40 V
2
100
μA
Emitter off-state current
VCC = VC = 40 V, VE = 0
–100
μA
Common emitter
VE = 0, IC = 200 mA
1.1
1.3
Collector-emitter saturation voltage
V
Emitter follower
VO(C1 or C2) = 15 V, IE = –200 mA
1.5
2.5
Output control input current
VI = Vref
3.5
mA
(1)
All typical values, except for temperature coefficient, are at TA = 25°C.
7.9 Electrical Characteristics, Dead-Time Control Section
See Figure 5
PARAMETER
TEST CONDITIONS
MIN TYP(1)
MAX
UNIT
Input bias current (DEAD-TIME CTRL)
VI = 0 to 5.25 V
–2
–10
μA
VI (DEAD-TIME CTRL) = 0, CT = 0.01 μF,
Maximum duty cycle, each output
45%
RT = 12 kΩ
Zero duty cycle
3
3.3
Input threshold voltage (DEAD-TIME CTRL)
V
Maximum duty cycle
0
(1)
All typical values, except for temperature coefficient, are at TA = 25°C.
7.10 Electrical Characteristics, PWM Comparator Section
See Figure 5
PARAMETER
TEST CONDITIONS
MIN TYP(1)
MAX
UNIT
Input threshold voltage (FEEDBACK)
Zero duty cyle
4
4.5
V
Input sink current (FEEDBACK)
V (FEEDBACK) = 0.7 V
0.3
0.7
mA
(1)
All typical values, except for temperature coefficient, are at TA = 25°C.
7.11 Electrical Characteristics, Total Device
PARAMETER
TEST CONDITIONS
MIN TYP(1)
MAX
UNIT
VCC = 15 V
6
10
RT = Vref,
Standby supply current
mA
All other inputs and outputs open
VCC = 40 V
9
15
Average supply current
VI (DEAD-TIME CTRL) = 2 V, See Figure 5
7.5
mA
(1)
All typical values, except for temperature coefficient, are at TA = 25°C.
7.12 Switching Characteristics
TA = 25°C
PARAMETER
TEST CONDITIONS
MIN TYP(1)
MAX
UNIT
Rise time
100
200
ns
Common-emitter configuration, See Figure 7
Fall time
25
100
ns
Rise time
100
200
ns
Emitter-follower configuration, See Figure 8
Fall time
40
100
ns
(1)
All typical values, except for temperature coefficient, are at TA = 25°C.
6
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