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STR-X6768N bảng dữ liệu(PDF) 6 Page - Allegro MicroSystems

tên linh kiện STR-X6768N
Giải thích chi tiết về linh kiện  Off-Line Quasi-Resonant Switching Regulators
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nhà sản xuất  ALLEGRO [Allegro MicroSystems]
Trang chủ  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

STR-X6768N bảng dữ liệu(HTML) 6 Page - Allegro MicroSystems

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Off-Line Quasi-Resonant Switching Regulators
STR-X6768N
6
ELECTRICAL CHARACTERISTICS
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units
ELECTRICAL CHARACTERISTICS for Controller (MIC)1
, valid at TA = 25°C, VCC = 20 V, unless otherwise specified
Power Supply Start-up Operation
Operation Start Voltage
VCC(ON)
VCC = 0→20 V
16.3
18.2
19.9
V
Operation Stop Voltage
VCC(OFF)
VCC = 20→8.8 V
8.8
9.7
10.6
V
Circuit Current In Operation
ICC(ON)
––6
mA
Circuit Current In Non-Operation
ICC(OFF)
VCC = 15 V
100
μA
Oscillation Frequency
fosc
19
22
25
kHz
Soft Start Operation Stop Voltage
VSSOLP(SS) VSS/OLP increasing
1.1
1.2
1.4
V
Soft Start Operation Charging Current
ISSOLP(SS) VSS/OLP = 0 V
–710
–550
–390
μA
Normal Operation
Bottom-Skip Operation Threshold Voltage 1
VOCPBD(BS1)
–0.720
–0.665
–0.605
V
Bottom-Skip Operation Threshold Voltage 2
VOCPBD(BS2)
–0.485
–0.435
–0.385
V
Overcurrent Detection Threshold Voltage
VOCPBD(LIM) VOCP/BD falling
–0.995
–0.940
–0.895
V
OCP/BD Terminal Outflow Current
IOCPBD
VOCP/BD = –0.95 V
–250
–100
–40
μA
Quasi-Resonant Operation Threshold Voltage 1
VOCPBD(TH1) VOCP/BD falling
0.28
0.40
0.52
V
Quasi-Resonant Operation Threshold Voltage 2
VOCPBD(TH2) VOCP/BD rising
0.67
0.80
0.93
V
FB Terminal Threshold Voltage
VFB(OFF)
VFB rising
1.32
1.45
1.58
V
FB Terminal Inflow Current (Normal Operation)
IFB(ON)
VFB = 1.6 V
600
1000
1400
μA
Standby Operation
Standby Operation Start Voltage
VCC(S)
VCC = 0→15 V, VFB = 1.6 V
10.3
11.2
12.1
V
Standby Operation Start Voltage Interval
VCC(SK)
VCC(SK) = VCC(S) – VCC(OFF)
1.10
1.35
1.65
V
Standby Non-Operation Circuit Current
ICC(S)
VCC = 10.2 V, VFB = 1.6 V
–20
56
μA
FB Terminal Inflow Current, Standby Operation
IFB(S)
VCC = 10.2 V, VFB = 1.6 V
–4
14
μA
FB Terminal Threshold Voltage, Standby Operation
VFB(S)
VCC = 15 V, VFB rising
0.55
1.10
1.50
V
Minimum On Time
tON(MIN)
0.5
0.95
1.40
μs
Protection Operation
Maximum On Time
tON(MAX)
27.5
32.5
39.0
μs
Overload Protection Operation Threshold Voltage
VSSOLP(OLP)
4.0
4.9
5.8
V
Overload Protection Operation Charging Current
ISSOLP(OLP) VSS/OLP = 2.5 V
–16
–11
–6
μA
Overvoltage Protection Operation Voltage
VCC(OVP)
VCC = 0→30 V
25.5
27.7
29.9
V
Latch Circuit Holding Current2
ICC(H)
VCC(OFF)– 0.3 V
45
140
μA
Latch Circuit Release Voltage2
VCC(La.OFF) VCC = 30→6 V, OVP operating
6.0
7.2
8.5
V
ELECTRICAL CHARACTERISTICS for MOSFET
, valid at TA = 25°C, unless otherwise specified
Drain-to-Source Breakdown Voltage
VDSS
IDSS = 300 μA
800
V
Drain Leakage Current
IDSS
VDSSS = 800 V
300
μA
On Resistance
RDS(on)
IDS = 2.5 A
1.0
Ω
Switching Time
tf
450
ns
Thermal Resistance
Rθch-F
Channel to internal frame
0.99
°C/W
1
Current polarity with respect to the IC: positive current indicates current sink at the terminal named, negative current indicates source at the
terminal named.
2
The latch circuit means a circuit operated OVP and OLP.
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com


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