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参数资料
| 型号： | NTE7099 |
| 厂商： | NTE Electronics, Inc. |
| 英文描述： | Integrated Circuit Current Mode Pulse Width Modulator (PWM) Control Circuit |
| 中文描述： | 集成电路电流模式脉冲宽度调制（PWM）控制电路 |
| 文件页数： | 1/3页 |
| 文件大小： | 25K |
| 代理商： | NTE7099 |
NTE7098 & NTE7099
Integrated Circuit
Current Mode Pulse Width Modulator (PWM)
Control Circuit
Description:
The NTE7098 and NTE7099 are integrated circuits in 8–Lead DIP type packages that incorporate a
new precision temperature–controlled oscillator to minimize variations in frequency. An internal
toggle flip–flop, which blanks the output off every other clock cycle, limits the duty–cycle range to less
than 50%. An under–voltage lockout ensures that V
REF
is stabilized before the output stage is en-
abled.
Other features include low start–up current, pulse–by–current limiting, and high–current totem pole
output for driving capacitive loads, such as the gate of a power MOSFET. The output is low in the
off state, consistent with N–channel devices.
Features:
Optimized for Off–Line Control
Temperature Compensated Oscillator
50% Maximum Duty–Cycle Clamp
V
ref
Stabilized before Output Stage is Enabled
Low Start–Up Current
Pulse–by Pulse Current Limiting
Improved U/V Lockout
Double Pulse Suppression
1% Trimmed Bandgap Reference
High Current Totem Pole Output
Absolute Maximum Ratings:
Supply Voltage (I
CC
< 30mA)
Supply Voltage (Low Impedence Source)
Output Current
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Energy (Capacitive Load)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Analog Inputs (V
FB
, V
SENSE
)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Error Amp Output Sink Current
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Self Limiting
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30V
±
1A
5
μ
J
–0.3V to V
CC
10mA
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