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參數(shù)資料
| 型號： | UC384XBD |
| 廠商： | Motorola, Inc. |
| 英文描述： | HIGH PERFORMANCE CURRENT MODE CONTROLLERS |
| 中文描述： | 高性能電流模式控制器 |
| 文件頁數(shù)： | 4/8頁 |
| 文件大?。?/td> | 463K |
| 代理商： | UC384XBD |
PARAMETER
TEST CONDITION
UC1842/3/4/5
UC2842/3/4/5
MIN
TYP
UC3842/3/4/5
UNITS
MAX
MIN
TYP
MAX
Output Section
Output Low Level
I
SINK
= 20mA
I
SINK
= 200mA
I
SOURCE
= 20mA
I
SOURCE
= 200mA
T
J
= 25°C, C
L
= 1nF (Note 2)
T
J
= 25°C, C
L
= 1nF (Note 2)
0.1
1.5
13.5
13.5
50
50
0.4
2.2
0.1
1.5
13.5
13.5
50
50
0.4
2.2
V
V
V
V
ns
ns
Output High Level
13
12
13
12
Rise Time
Fall Time
Under-voltage Lockout Section
Start Threshold
150
150
150
150
X842/4
X843/5
X842/4
X843/5
15
7.8
9
7.0
16
8.4
10
7.6
17
9.0
11
8.2
14.5
7.8
8.5
7.0
16
8.4
10
7.6
17.5
9.0
11.5
8.2
V
V
V
V
Min. Operating Voltage
After Turn On
PWM Section
Maximum Duty Cycle
X842/3
X844/5
95
46
97
48
100
50
0
95
47
97
48
100
50
0
%
%
%
Minimum Duty Cycle
Total Standby Current
Start-Up Current
Operating Supply Current
V
CC
Zener Voltage
Note 2: These parameters, although guaranteed, are not 100% tested in production.
Note 3: Parameter measured at trip point of latch with V
PIN 2
= 0.
Note 4: Gain defined as:
A
=
V
PIN
1
V
PIN
3
; 0
≤
V
PIN
3
≤
0.8V.
Note 5: Adjust V
CC
above the start threshold before setting at 15V.
Note 6: Output frequency equals oscillator frequency for the UC1842 and UC1843.
Output frequency is one half oscillator frequency for the UC1844 and UC1845.
0.5
11
34
1
0.5
11
34
1
mA
mA
V
V
PIN 2
= V
PIN 3
= 0V
I
CC
= 25mA
17
17
30
30
UC1842/3/4/5
UC2842/3/4/5
UC3842/3/4/5
ELECTRICAL CHARACTERISTICS:
Unless otherwise stated, these specifications apply for
55°C
≤
T
A
≤
125°C for the
UC184X;
40°C
≤
T
A
≤
85°C for the UC284X; 0
°
C
≤
T
A
≤
70°C for the 384X; V
CC
=
15V (Note 5); R
T
= 10k; C
T
=3.3nF, T
A
=T
J.
ERROR AMP CONFIGURATION
Error Amp can Source or Sink up to 0.5mA
4
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