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參數(shù)資料
| 型號(hào)： | NTE1722 |
| 廠商： | NTE Electronics, Inc. |
| 英文描述： | Quadruple Operational Amplifier 14-SO 0 to 70 |
| 中文描述： | 集成電路脈沖寬度調(diào)制（PWM）控制電路 |
| 文件頁(yè)數(shù)： | 1/4頁(yè) |
| 文件大?。?/td> | 31K |
| 代理商： | NTE1722 |
NTE1722
Integrated Circuit
Pulse Width Modulator (PWM) Control Circuit
Description:
The NTE1722 is a high performance pulse width modulator integrated circuit in an 18–Lead DIP type
package intended for fixed frequency switching regulators and other power control applications.
Functions included in this IC are a temperature compensated voltage reference, sawtooth oscillator,
error amplifier, pulse width modulator, pulse metering and steering logic, and two high current totem
pole outputs ideally suited for driving the capacitance of power FETs at high speeds.
Additional protective features include soft start and undervoltage lockout, digital current limiting,
double pulse inhibit, adjustable dead time and a data latch for single pulse metering. All digital control
ports art TTL and B–series CMOS compatible. Active low logic design allows easy wired–OR connec-
tions for maximum flexibility. The versatility of this device enables implementation in single–ended
or push–pull switching regulators that are transformerless or transformer coupled.
Features:
8.0 to 35 Volt Operation
5.0 Volt
±
1% Trimmed Reference
1.0Hz to 400kHz Oscillator Range
Dual Source/Sink Current Outputs:
±
100mA
Digital Current Limiting
Programmable Dead Time
Wide Current Limit Common Mode Range
Guaranteed 6 Unit Synchronization
Absolute Maximum Ratings:
(Values beyond which damage may occur)
Supply Voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Collector Supply Voltage, V
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Logic Inputs
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Analog Inputs
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Current (Source or Sink), I
O
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reference Load Current (V
CC
= 40V, Note 1), I
ref
Logic Sink Current
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipation (T
A
= +25
°
C), P
D
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Derate Above 50
°
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipation (T
C
= +25
°
C), P
D
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Derate Above 25
°
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Junction Temperature, T
J
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal Resistance, Junction–to–Ambient, R
thJA
Lead Temperature (During Soldering, 10sec), T
L
Note 1. Maximum junction temperature must be observed.
+40V
+40V
–0.3 to +5.5V
–0.3 to V
CC
V
±
200mA
50mA
15mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1000mW
10mW/
°
C
3000mW
24mW/
°
C
+ 150
°
C
–65
°
to +150
°
C
100
°
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±
300
°
C
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