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參數(shù)資料
| 型號(hào)： | U3825DW |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | High Speed PWM Controller |
| 中文描述： | 高速PWM控制器 |
| 文件頁(yè)數(shù)： | 4/17頁(yè) |
| 文件大小： | 914K |
| 代理商： | U3825DW |
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4
UC1825
UC2825
UC3825
UC1825
UC2825
TOP
UC3825
PARAMETERS
TEST CONDITIONS
MIN
MAX
MIN
TOP
MAX
UNITS
PWM Comparator Section
Pin 7 Bias Current
Duty Cycle Range
Pin 3 Zero DC Threshold
Delay to Output
*
Soft-Start Section
Charge Current
Discharge Current
Current Limit / Shutdown Section
Pin 9 Bias Current
Current Limit Threshold
Shutdown Threshold
Delay to Output
Output Section
Output Low Level
V
PIN 7
= 0V
-1
-5
80
-1
-5
85
μ
A
%
V
ns
0
0
V
PIN 7
= 0V
1.1
1.25
50
1.1
1.25
50
80
80
V
PIN 8
= 0.5V
V
PIN 8
= 1V
3
1
9
20
3
1
9
20
μ
A
mA
0 < V
PIN 9
< 4V
15
1.1
1.55
80
10
1.1
1.55
80
μ
A
V
V
ns
0.9
1.25
1.0
1.40
50
0.9
1.25
1.0
1.40
50
I
OUT
= 20mA
I
OUT
= 200mA
I
OUT
= -20mA
I
OUT
= -200mA
V
C
= 30V
CL = 1nF
0.25
1.2
13.5
13.0
100
30
0.40
2.2
0.25
1.2
13.5
13.0
10
30
0.40
2.2
V
V
V
V
μ
A
ns
Output High Level
13.0
12.0
13.0
12.0
Collector Leakage
Rise/Fall Time
*
Under-Voltage Lockout Section
Start Threshold
UVLO Hysteresis
Supply Current Section
Start Up Current
ICC
500
60
500
60
8.8
0.4
9.2
0.8
9.6
1.2
8.8
0.4
9.2
0.8
9.6
1.2
V
V
V
CC
= 8V
V
PIN 1
, V
PIN 7
, V
PIN 9
= 0V; V
PIN 2
= 1V
1.1
22
2.5
33
1.1
22
2.5
33
mA
mA
ELECTRICAL CHARACTERISTICS:
Unless otherwise stated, these specifications apply for , R
T
= 3.65k, C
T
= 1nF, V
CC
= 15V, -55
°
C<T
A
<125
°
C for the UC1825, –40
°
C<T
A
<85
°
C for the UC2825, and 0
°
C<T
A
<70
°
C for the UC3825, T
A
=T
J.
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