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參數(shù)資料
| 型號： | UC2548 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Primary Side PWM Controller |
| 中文描述： | 一次側(cè)PWM控制器 |
| 文件頁數(shù)： | 2/9頁 |
| 文件大?。?/td> | 345K |
| 代理商： | UC2548 |
ELECTRICAL CHARACTERISTICS
Unless otherwise stated, all specifications are over the junction temperature range of
55
°
C to +125
°
C for the UC1548,
40
°
C to +85
°
C for the UC2548, and 0
°
C to +70
°
C for the UC3548. Test conditions are: VCC =
12V, CT = 400pF, CI = 100pF, IOFF = 100
μ
A, CDC = 100nF, Cvs = 100pF, and Ivs = 400
μ
A, T
A
= T
J
.
UC1548
UC2548
UC3548
Supply Voltage (Pin 15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22V
Output Current, Source or Sink (Pin 14)
DC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5A
Pulse (0.5
μ
s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2A
Power Ground to Ground (Pin 1 to Pin 13) . . . . . . . . . . .
±
0.2V
Analog Input Voltages
(Pins 3, 4, 7, 8, 12, 16) . . . . . . . . . . . . . . . . . . . . . -0.3 to 7V
Analog Input Currents, Source or Sink
(Pins 3, 4, 7, 8, 11, 12, 16) . . . . . . . . . . . . . . . . . . . . . . 1mA
Analog Output Currents, Source or Sink (Pins 5 & 10) . . . 5mA
Power Dissipation at T
A
= 60
°
C
. . . . . . . . . . . . . . . . . . . . . . . .
1W
Storage Temperature Range
. . . . . . . . . . . . . . .
65
°
C to +150
°
C
Lead Temperature (Soldering 10 seconds) . . . . . . . . . . +300
°
C
Notes: All voltages are with respect to ground (DIL and SOIC
pin 1). Currents are positive into the specified terminal.
Pin numbers refer to the 16 pin DIL and SOIC packages.
Consult Packaging Section of Databook for thermal
limitations and considerations of packages.
CONNECTION DIAGRAMS
DIL-16, SOIC-16 (Top View)
J, N, or DW Packages
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Real Time Current Waveform Synthesizer
Ion Amplifier
Offset Voltage
Slew Rate (Note 1)
lib
IOFF Current Mirror
Input Voltage
Current Gain
Current Error Amplifier
A
VOL
Vio
lib
Voh
Vol
Source Current
GBW Product
Slew Rate (Note 1)
Oscillator
Frequency
0.95
20
1
1.05
V
25
-2
V/
μ
s
μ
A
-20
0.95
0.9
1
1
1.05
1.1
V
A/A
60
100
dB
mV
μ
A
V
V
mA
MHz
V/
μ
s
12V
≤
VCC
≤
20V, 0V
≤
VCM
≤
5V
10
-3
3.5
0.6
2.0
-0.5
3.3
0.3
1.6
8
10
I
O
=
200
μ
A
I
O
= 200
μ
A
V
O
= 1V
f = 200kHz
3.1
1.4
5
8
T
A
= 25
°
C
240
235
250
260
265
kHz
kHz
ABSOLUTE MAXIMUM RATINGS
PLCC-20 & LCC-20 (Top View)
Q & L Packages
2
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