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參數(shù)資料
| 型號： | UC494 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Advanced Regulating Pulse Width Modulators |
| 中文描述： | 高級調(diào)節(jié)脈沖寬度調(diào)制器 |
| 文件頁數(shù)： | 3/5頁 |
| 文件大?。?/td> | 473K |
| 代理商： | UC494 |
ELECTRICAL CHARACTERISTICS:
PARAMETER
TEST CONDITION
MIN
TYP
MAX
UNITS
Deadtime Control Section (cont.)
(Output Control Connected to V
REF
)
Input Threshold Voltage (Pin 4)
Zero Duty-Cycle
Maximum Duty-Cycle
3
3.3
V
V
0
Amplifier Section
Input Offset Voltage
Input Offset Current
Input Bias Current
Common-Mode Input Voltage Range
V
O (PIN 3)
= 2.5V
V
O (PIN 3)
=2.5V
V
O (PIN 3)
= 2.5V
V
CC
= 7V to 40V
2
25
-0.2
10
250
-1
mV
nA
μ
A
V
.03 to
V
CC
-2
Open Loop Voltage Gain
Unity Gain Bandwidth
Common-Mode Rejection Ratio
Output Sink Current (Pin 3)
Output Source Current (Pin 3)
Output Section
Collector Off-State Current
Emitter Off-State Current
Collector - Emitter
Saturation Voltage
V
O
= 3V, V
O
= 0.5V to 3.5 V
70
95
800
80
0.7
dB
kHz
dB
mA
mA
V
CC
= 40V, T
A
= 25
°
C
V
ID
= -15mV to -5V, V
(PIN 3)
= 0.7V
V
ID
= 15mV to 5V, V
(PIN 3)
= 3.5V
65
0.3
-2
V
CE
= 40V, V
CC
= 40V
V
CC
= V
C
= 40V, V
E
= 0
V
E
= 0, I
C
= 200mA
V
C
= 15V, I
E
= -200mA
V
I
= V
REF
2
100
-100
1.3
2.5
3.5
μ
A
μ
A
V
V
mA
Common-Emitter
Emitter-Follower
1.1
1.5
Output Control Input Current
PWM Comparator Section
Input Threshold Voltage (Pin 3)
Input Sink Current (Pin 3)
Steering Control
(UC495A, See Function Table)
Input Current
Zero Duty-Cycle
V
(PIN 3)
= 0.7V
4
4.5
V
0.3
0.7
mA
V
(PIN 13)
= 0.4V, Q
1 ACTIVE
V
(PIN 13)
= 2.4V, Q
2 ACTIVE
-200
300
μ
A
μ
A
mV
Deadband
Zener Diode Circuit
(UC495A)
Breakdown Voltage
Sink Current
Total Device
Standby Supply Current
500
V
CC
= 45V, I
Z
= 2mA
V
(PIN 15)
= 1V
36
0.2
39
0.3
45
0.6
V
mA
Pin 6 at V
REF
, All other inputs and
outputs open
V
CC
= 15V
V
CC
= 40V
6
9
10
15
6.5
mA
mA
V
mV
Under Voltage Lockout
Hysteresis
Switching Characteristics
(T
A
= 25
°
C)
Output Voltage Rise Time
Output Voltage Fall Time
Output Voltage Rise Time
Output Voltage Fall Time
3.5
300
Common-Emitter Configuration
R
L
= 68
, C
L
= 15pF
Emitter-Follower Configuration
R
L
= 68
, C
L
=15pF
100
25
100
40
200
100
200
100
ns
ns
ns
ns
Note 1: Duration of the short circuit should not exceed one second.
Note 2: Frequency for other values of C
T
and R
T i
s approximately
f
=
1.1
R
T
C
T
Note 3: Standard deviation is a measure of the statistical distribution about the mean as derived from the formula:
σ
=
√
n
Σ
(
X
n
X
)
2
n
=
1
n
1
.
UC494A/AC
UC495A/AC
Unless otherwise stated, over recommended operating free-air temperature range,
V
CC
= 15V, f = 10kHz, T
A
= T
J.
3
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相關(guān)代理商/技術(shù)參數(shù) |
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| UC494 DIE | 制造商:Texas Instruments 功能描述: |
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| UC494A WAF | 制造商:Texas Instruments 功能描述: |
| UC494AAC | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Advanced Regulating Pulse Width Modulators |
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