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參數(shù)資料
| 型號： | UC2845AJ |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | OMNIFET II: FULLY AUTOPROTECTED POWER MOSFET |
| 中文描述： | 電流模式開關電源控制器 |
| 文件頁數(shù)： | 2/7頁 |
| 文件大?。?/td> | 517K |
| 代理商： | UC2845AJ |
PACKAGE PIN FUNCTION
FUNCTION
N/C
Comp
N/C
V
FB
N/C
I
SENSE
N/C
R
T
/C
T
N/C
Pwr Gnd
Gnd
N/C
Output
N/C
V
C
V
CC
N/C
V
REF
PIN
1
2
3-4
5
6
7
8-9
10
11
12
13
14
15
16
17
18
19
20
DIL-8, SOIC-8 (TOP VIEW)
J or N, D8 Package
CONNECTION DIAGRAMS
ELECTRICAL CHARACTERISTICS
Unless otherwise stated, these specifications apply for -55
°
C
≤
T
A
≤
125
°
C for the
UC184xA; -40
°
C
≤
T
A
≤
85
°
C for the UC284xA; 0
≤
T
A
≤
70
°
C for the UC384xA; V
CC
= 15V (Note 5); R
T
= 10k; C
T
= 3.3nF; T
A
= T
J
; Pin
numbers refer to DIL-8.
PARAMETER
TEST CONDITIONS
UC184xA\UC284xA
MIN.
TYP.
UC384xA
TYP.
UNITS
MAX.
MIN.
MAX.
Reference Section
Output Voltage
Line Regulation
Load Regulation
Temp. Stability
Total Output Variation
Output Noise Voltage
T
J
= 25°C, I
O
= 1mA
12
≤
V
IN
≤
25V
1
≤
I
O
≤
20mA
(Note 2, Note 7)
Line, Load, Temp.
10Hz
≤
f
≤
10kHz
T
J
= 25°C (Note 2)
T
A
= 125°C, 1000Hrs. (Note 2)
4.95
5.00
6
6
0.2
5.05
20
25
0.4
5.1
4.90
5.00
6
6
0.2
5.10
20
25
0.4
5.18
V
mV
mV
mV/°C
V
4.9
4.82
50
5
-100
50
5
-100
μ
V
mV
mA
Long Term Stability
Output Short Circuit
Oscillator Section
Initial Accuracy
Voltage Stability
Temp. Stability
Amplitude
Discharge Current
25
-180
25
-180
-30
-30
T
J
= 25°C (Note 6)
12
≤
V
CC
≤
25V
T
MIN
≤
T
A
≤
T
MAX
(Note 2)
V
PIN 4
peak to peak (Note 2)
T
J
= 25°C, V
PIN 4
= 2V (Note 8)
V
PIN 4
= 2V (Note 8)
47
52
0.2
5
1.7
8.3
57
1
47
52
0.2
5
1.7
8.3
57
1
kHz
%
%
V
mA
mA
7.8
7.5
8.8
8.8
7.8
7.6
8.8
8.8
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Supply Voltage (Low Impedance Source) . . . . . . . . . . . . . . 30V
Supply Voltage (I
CC
mA). . . . . . . . . . . . . . . . . . . . . Self Limiting
Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±
1A
Output Energy (Capacitive Load). . . . . . . . . . . . . . . . . . . . . 5
μ
J
Analog Inputs (Pins 2, 3) . . . . . . . . . . . . . . . . . . -0.3V to +6.3V
Error Amp Output Sink Current . . . . . . . . . . . . . . . . . . . . 10mA
Power Dissipation at T
A
≤
25°C (DIL-8) . . . . . . . . . . . . . . . . 1W
Storage Temperature Range . . . . . . . . . . . . . -65°C to +150°C
Lead Temperature (Soldering, 10 Seconds) . . . . . . . . . . 300°C
Note 1. All voltages are with respect to Ground, Pin 5. Currents
are positive into, negative out of the specified terminal. Consult
Packaging Section of Databook for thermal limitations and con-
siderations of packages. Pin numbers refer to DIL package only.
PLCC-20, LCC-20
(TOP VIEW)
Q, L Packages
UC1842A/3A/4A/5A
UC2842A/3A/4A/5A
UC3842A/3A/4A/5A
SOIC-14 (TOP VIEW)
D Package
2
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|---|---|
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