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參數(shù)資料
| 型號： | AN-TL494 |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 圓形連接器 |
| 英文描述： | Circular Connector; No. of Contacts:37; Series:MS27656; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:15; Circular Contact Gender:Socket; Circular Shell Style:Wall Mount Receptacle RoHS Compliant: No |
| 中文描述： | 脈寬調(diào)制控制電路 |
| 文件頁數(shù)： | 4/17頁 |
| 文件大?。?/td> | 449K |
| 代理商： | AN-TL494 |
www.ti.com
N
n
1
(x
n
X)
2
N
1
Electrical Characteristics
over recommended operating free-air temperature range, V
CC
= 15 V, f = 10 kHz (unless otherwise noted)
Reference Section
Oscillator Section
C
T
= 0.01
μ
F, R
T
= 12 k
(see Figure 1)
Error-Amplifier Section
See Figure 2
TL494
PULSE-WIDTH-MODULATION CONTROL CIRCUITS
SLVS074E–JANUARY 1983–REVISED FEBRUARY 2005
TL494C, TL494I
MIN TYP
(2)
4.75
PARAMETER
TEST CONDITIONS
(1)
UNIT
MAX
5.25
Output voltage (REF)
Input regulation
Output regulation
Output voltage change with temperature
Short-circuit output current
(3)
I
O
= 1 mA
V
CC
= 7 V to 40 V
I
O
= 1 mA to 10 mA
T
A
= MIN to MAX
REF = 0 V
5
2
1
2
V
25
15
10
mV
mV
mV/V
mA
25
(1)
(2)
(3)
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
All typical values, except for parameter changes with temperature, are at T
A
= 25
°
C.
Duration of short circuit should not exceed one second.
TL494C, TL494I
MIN TYP
(2)
PARAMETER
TEST CONDITIONS
(1)
UNIT
MAX
Frequency
Standard deviation of frequency
(3)
Frequency change with voltage
Frequency change with temperature
(4)
10
100
kHz
Hz/kHz
Hz/kHz
Hz/kHz
All values of V
CC
, C
T
, R
T
, and T
A
constant
V
CC
= 7 V to 40 V, T
A
= 25
°
C
T
A
= MIN to MAX
1
10
(1)
(2)
(3)
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
All typical values, except for parameter changes with temperature, are at T
= 25
°
C.
Standard deviation is a measure of the statistical distribution about the mean as derived from the formula:
(4)
Temperature coefficient of timing capacitor and timing resistor are not taken into account.
TL494C, TL494I
MIN TYP
(1)
PARAMETER
TEST CONDITIONS
UNIT
MAX
Input offset voltage
Input offset current
Input bias current
V
O
(FEEDBACK) = 2.5 V
V
O
(FEEDBACK) = 2.5 V
V
O
(FEEDBACK) = 2.5 V
2
10
250
mV
nA
μ
A
25
0.2
1
–0.3 to
V
CC
– 2
Common-mode input voltage range
V
CC
= 7 V to 40 V
V
Open-loop voltage amplification
Unity-gain bandwidth
Common-mode rejection ratio
Output sink current (FEEDBACK)
Output source current (FEEDBACK)
V
O
= 3 V, V
O
= 0.5 V to 3.5 V, R
L
= 2 k
V
O
= 0.5 V to 3.5 V, R
L
= 2 k
V
O
= 40 V, T
A
= 25
°
C
V
ID
= –15 mV to –5 V, V (FEEDBACK) = 0.7 V
V
ID
= 15 mV to 5 V, V (FEEDBACK) = 3.5 V
70
95
800
80
0.7
dB
kHz
dB
mA
mA
65
0.3
–2
(1)
All typical values, except for parameter changes with temperature, are at T
A
= 25
°
C.
4
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