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參數(shù)資料
| 型號： | NTE1765 |
| 廠商： | NTE Electronics, Inc. |
| 英文描述： | Precision Voltage Reference 8-SOIC 0 to 70 |
| 中文描述： | 集成電路雙通道電流模式控制器 |
| 文件頁數(shù)： | 1/4頁 |
| 文件大小： | 31K |
| 代理商： | NTE1765 |
NTE1765
Integrated Circuit
Dual Channel Current Mode Controller
Description:
The NTE1765 is a high performance, fixed frequency, dual current mode controller in a 16–Lead DIP
type package. This device is specifically designed for Off–Line and DC to DC converter applications
offering the designer a cost effective solution with minimal external components. The NTE1765 fea-
tures a unique oscillator for precise duty cycle limit and frequency control, a temperature compen-
sated reference, two high gain error amplifiers, two current sensing comparators, drive output 2 en-
able pin, and two high current totem pole outputs ideally suited for driving power MOSFETS.
Also included are protective features consisting of input and reference undervoltage lockouts each
with hysteresis, cycle–by–cycle current limiting, and a latch for single pulse metering of each output.
Features:
Unique Oscillator for Precise Duty Cycle Limit and Frequency Control
Current Mode Operation to 500kHz
Automatic Feed Forward Compensation
Separate Latching PWMs for Cycle–By–Cycle Current Limiting
Internally Trimmed Reference with Undervoltage Lockout
Drive Output 2 Enable Pin
Two High Current Totem Pole Outputs
Input Undervoltage Lockout with Hysteresis
Low Start–Up and Operating Current
Absolute Maximum Ratings:
Total Power Supply Current, I
CC
Zener Current, I
Z
Output Current, Source or Sink (Note 1), I
O
Output Energy (Capacitive Load per Cycle), W
Current Sense, Enable and Voltage Feedback Inputs, V
in
Sync Input, High State (Voltage), V
IH
Sync Input, Low State (Reverse Current), I
IL
Error Amp Output Sink Current, I
O
Maximum Power Dissipation (T
A
= +25
°
C), P
D
Thermal Resistance, Junction–to–Ambient, R
thJA
Operating Junction Temperature, T
J
Operating Ambient Temperature Range, T
A
Storage Temperature Range, T
stg
Note 1. Maximum package power dissipation limits must be observed.
50mA
50mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1A
5.0
μ
J
–0.3 to +5.5V
. . . . . . . . . . . . . . . . . . . . . . .
5.5V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–5.0mA
10mA
1.25mW
100
°
C/W
+150
°
C
0
°
to +70
°
C
–65
°
to +150
°
C
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