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參數資料
| 型號： | UC1584J |
| 英文描述： | 8-bit MCU for automotive with Flash or ROM, 10-bit ADC, 5 timers, SPI, LINSCI", active CAN |
| 中文描述： | 模擬IC |
| 文件頁數： | 1/7頁 |
| 文件大?。?/td> | 180K |
| 代理商： | UC1584J |
UC1584
UC2584
UC3584
03/99
FEATURES
Practical Operation at Switching
Frequencies up to 1MHz
Wide Band Error Amplifier
Undervoltage Lockout with Hysteresis
Output Active Low During UVLO
Soft Start/Maximum Duty Cycle
Control
Trimmed Bandgap Reference
Internally Regulated 15V Boost
Supply
Short Circuit Protection with
Programmable Delay
Secondary Side Synchronous Post Regulator
DESCRIPTION
The UC3584 is a low voltage, Secondary Side Synchronous Post Regula-
tor. It is intended to be used for auxiliary output voltage regulation in single
secondary winding, multiple output power supplies (for more details refer
to the Application Section of this Data sheet). The UC3584 is most suited
for systems where the main output is regulated between 5V and 14V. Out-
put voltages regulated by the UC3584 can range from virtually 0V up to
the output voltage of the main output.
Auxiliary output voltage regulation with the UC3584 uses leading edge
modulation making it compatible to primary side peak current or voltage
mode control. The UC3584 clock circuit is synchronized to the switching
frequency utilizing the falling edge of the transformer’s secondary winding
waveform.
15
13
14
16
11
9
10
12
SYNC
CT
RT
VREG
VCC
220pF
15k
100pF
1k
BST2
PGND
FB
BST1
0.1
μ
F
1N4148
0.1
μ
F
10
μ
F
S+
TANTALUM
1N4148
33
μ
H
COLTRONICS
470
μ
F
+
2
4
3
1
6
8
7
5
COMP
SS
CDLY
GND
SRC
OUT
VFLT
1.5
μ
F
120pF
1000pF
0.1
μ
F
3300pF
20k
30.1k
1500pF
1.33k
24.3k
3.3V
AUX
100
1.5W
0.1
μ
F
390
μ
F
33
μ
H
COILTRONICS
CSHD
10-45L
IRFR024
4.75k
3.57k
3.3
+
+
+
+
7
μ
H
OS-CON
330
μ
F
+
1
μ
F
+
5V
MAIN
170kHz
PUSH-PULL
2
2
10
10
10BQ040
TYPICAL APPLICATION DIAGRAM.
UDG-99062
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