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參數(shù)資料
| 型號： | KA3883ED |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SMPS Controller |
| 中文描述： | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | SOP-8 |
| 文件頁數(shù)： | 3/6頁 |
| 文件大?。?/td> | 48K |
| 代理商： | KA3883ED |
KA3882E/KA3883E
3
Electrical Characteristics
(Continued)
(V
CC
= 15V, R
T
= 10k
, C
T
= 3.3nF, T
A
= 0
°
C to +70
°
C, Unless otherwise specified)
* Adjust V
CC
above the start threshold before setting at 15V
Notes :
1. These parameters, although guaranteed, are not 100% tested in production.
2. Parameter measured at trip point of latch with V
FB
= 0V.
3. Gain defined as:
4. Junction-to-air thermal resistance test enviroments.
-.
PCB information ;
Board thickness : 1.6mm , Board dimension : 76.2 X 114.3mm
2
, Ref. : EIA / JSED51-3 and EIA / JSED51-7
-.
Board structure; Using the single layer PCB.
Parameter
ERROR AMPLIFIER SECTION
Input voltage
Input bias current
Open loop gain
Unity gain bandwidth
PSRR
Output sink current
Output source current
Output high voltage
Output low voltage
OUTPUT SECTION
Symbol
Conditions
Min.
Typ.
Max.
Unit
V
I
V
PIN1
= 2.5V
V
FB
=0V
V
O
= 2V to 4V (Note1)
T
J
= 25
°
C (Note1)
V
CC
= 12V to 25V (Note1)
V
PIN2
= 2.7V, V
PIN1
= 1.1V
V
PIN2
= 2.3V, V
PIN1
= 5.0V
V
PIN2
= 2.3V, R1 = 15k
to GND
V
PIN2
= 2.7V, R1 = 15k
to Vref
2.42
-
65
0.7
60
2
-0.5
5
-
2.50
-0.3
90
1
70
6
-0.8
6
0.8
2.58
- 2
-
-
-
-
-
-
1.1
V
uA
dB
MHz
dB
mA
mA
V
V
I
BIAS
G
VO
GBW
PSRR
I
SINK
I
SOURCE
V
OH
V
OL
Output low level
V
OL
I
SINK
= 20mA
I
SINK
= 200mA
I
SOURCE
= 20mA
I
SOURCE
= 200mA
T
J
= 25
°
C, C1 = 1nF (Note1)
T
J
= 25
°
C, C1 = 1nF (Note1)
V
CC
= 27V, C1 = 1nF
-
-
0.1
1.5
13.5
13.5
40
40
22
0.4
2.2
-
-
100
100
-
V
V
V
V
ns
ns
V
Output high level
V
OH
13
12
-
-
-
Rise time
Fall time
Output voltage swing limit
UNDER VOLTAGE LOCKOUT SECTION
t
R
t
F
V
OLIM
Start threshold
V
TH
KA3882E
KA3883E
KA3882E
KA3883E
15
7.8
9
7.0
16
8.4
10
7.6
17
9.0
11
8.2
V
V
V
V
Min. operating voltage
( after turn on )
V
TL
PWM SECTION
Maximum duty cycle
Minimum duty cycle
TOTAL STANDBY CURRENT
Start-up current
Operating supply current
V
CC
zener voltage
D
MAX
D
MIN
KA3882E/KA3883E
94
-
96
-
100
0
%
%
-
I
ST
I
CC
V
Z
-
-
-
-
0.2
11
29
0.4
17
-
mA
mA
V
V
PIN2
= V
PIN3
= 0V
I
CC
= 25mA
G
V
V
V
SENSE
------------------------
0
V
SENSE
0.8V
≤
≤
;
=
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