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| 型號： | LC5523FLF3051 |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | POWER FACTOR CONTROLLER, 18 kHz SWITCHING FREQ-MAX, ZFM7 |
| 封裝： | ROHS COMPLIANT, TO-220F, 7 PIN |
| 文件頁數(shù)： | 9/14頁 |
| 文件大?。?/td> | 468K |
| 代理商： | LC5523FLF3051 |
Single-Stage Power Factor Corrected
Off-Line Switching Regulator IC
LC5523F
4
ELECTRICAL CHARACTERISTICS (Controller Chip)1 TA = 25°C, VCC = 20 V, unless otherwise specified
Characteristics
Symbol
Test Conditions
Pins
Min.
Typ.
Max.
Unit
Power Supply Startup Operation
Operation Start Voltage
VCC(ON)
4 – 2
13.8
15.1
17.3
V
Operation Stop Voltage
VCC(OFF)
4 – 2
8.4
9.4
10.7
V
Circuit Current in Operation
ICC(ON)
4 – 2
–
3.7
mA
Startup Circuit Operation Voltage
VSTARTUP
1 – 2
42
57
72
V
Startup Current
ICC(STARTUP) VD/ST = 100 V, VCC = 13 V
4 – 2
5.5
3.0
1.0
mA
Startup Current Supplying Threshold
Voltage-1
VCC(BIAS)1
VD/ST = 100 V
4 – 2
9.5
11.0
12.5
V
Startup Current Supplying Threshold
Voltage-2
VCC(BIAS)2
VD/ST = 100 V
4 – 2
14.4
16.6
18.8
V
Normal Operation
Oscillation Minimum Frequency
fOSC
1 – 2
11.0
14.0
18.0
kHz
Maximum On Time
tON(MAX)
1 – 2
30.0
40.0
50.0
μs
FB Terminal Minimum Voltage
in Feedback Operation
VFB(MIN)
6 – 2
0.55
0.90
1.25
V
Maximum Feedback Current
IFB(MAX)
6 – 2
10
25
40
μA
Leading Edge Blanking Time
tBW
5 – 2
500
ns
Quasi-Resonant Operation Threshold
Voltage-1
VBD(TH1)
5 – 2
0.14
0.24
0.34
V
Quasi-Resonant Operation Threshold
Voltage-2
VBD(TH2)
5 – 2
0.12
0.17
0.22
V
Protection Operation
Overcurrent Detection Threshold
Voltage
VOCP
5 – 2
0.54
0.60
0.66
V
OCP Terminal Source Current
IOCP
5 – 2
120
40
10
μA
OVP Operation Voltage of OCP
Terminal
VOCP(OVP)
5 – 2
2.2
2.6
3.0
V
OLP Threshold Voltage
VFB(OLP)1
6 – 2
5.0
5.5
6.0
V
OLP Threshold Voltage
VFB(OLP)2
6 – 2
4.1
4.5
4.9
V
OVP Terminal Threshold Voltage
VOVP
7 – 2
1.6
2.0
2.4
V
OVP Operation Voltage of VCC
Terminal
VCC(OVP)
4 – 2
28.5
31.5
34.0
V
Thermal Shutdown Operating
Temperature
TJ(TSD)
–
135
–
°C
1
The current ratings are based on those of the IC, and plus (+) represents sink and minus (-) represents source.
2
The relation of VCC(BIAS)1 > VCC(OFF) is applied for each product.
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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