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参数资料
| 型号： | TL494MJB |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 0.25 A SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, CDIP16 |
| 封装： | CERAMIC, DIP-16 |
| 文件页数： | 15/21页 |
| 文件大小： | 620K |
| 代理商： | TL494MJB |
www.ti.com
Absolute Maximum Ratings
(1)
Recommended Operating Conditions
TL494
PULSE-WIDTH-MODULATION CONTROL CIRCUITS
SLVS074E – JANUARY 1983 – REVISED FEBRUARY 2005
over operating free-air temperature range (unless otherwise noted)
MIN
MAX
UNIT
VCC
Supply voltage(2)
41
V
VI
Amplifier input voltage
VCC + 0.3
V
VO
Collector output voltage
41
V
IO
Collector output current
250
mA
D package
73
DB package
82
θ
JA
Package thermal impedance(3)(4)
N package
67
°C/W
NS package
64
PW package
108
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
260
°C
Tstg
Storage temperature range
–65
150
°C
(1)
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2)
All voltages are with respect to the network ground terminal.
(3)
Maximum power disipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient
temperatire is PD = (TJ(max) – TA)/θJA. Operating at the absolute maximum TJ of 150°C can affect reliability.
(4)
The package thermal impedance is calculated in accordance with JESD 51-7.
MIN
MAX
UNIT
VCC
Supply voltage
7
40
V
VI
Amplifier input voltage
–0.3
VCC – 2
V
VO
Collector output voltage
40
V
Collector output current (each transistor)
200
mA
Current into feedback terminal
0.3
mA
fOSC
Oscillator frequency
1
300
kHz
CT
Timing capacitor
0.47
10000
nF
RT
Timing resistor
1.8
500
k
TL494C
0
70
TA
Operating free-air temperature
°C
TL494I
–40
85
3
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相关代理商/技术参数 |
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