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參數(shù)資料
| 型號： | STR-A6251M |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | Universal-Input/15 W 67 kHz Flyback Switching Regulator |
| 中文描述： | Universal-Input/15糯67千赫反激式開關(guān)穩(wěn)壓器 |
| 文件頁數(shù)： | 3/7頁 |
| 文件大?。?/td> | 327K |
| 代理商： | STR-A6251M |
STR-A6251M
Universal-Input/13 W
67 kHz Flyback Switching Regulator
www.allegromicro.com
3
Swthn
Reuaos
ELECTRICAL CHARACTERISTICS
at T
A
= 25°C, V
CC
= 18 V (unless otherwise specified).
Pin
Characteristic
No.
Symbol
Drain-to-Source Breakdown Volt.
8 - 1
V
(BR)DSS
Ratings
Typ
-
Test Conditions
I
D
= 300 μA,
V
1
– V
3
= 0 V (short)
V
DS
= 650 V,
V
1
– V
3
= 0 V (short)
I
D
= 0.4 A
-
V
CC
= 0
t
15.7 V
V
CC
= 15.7
t
9 V
-
-
-
-
V
CC
= 12 V
fosc = f
osc(max)
fosc < f
osc(max)
Min
650
Max
-
Units
V
Drain Leakage Current
8
I
DSS
-
-
300
μA
On-State Resistance
MOSFET Switching Time
Operation-Start Voltage
Operation-Stop Voltage
Maximum Switching Frequency
Frequency-Jitter Deviation
Maximum ON Duty Cycle
Circuit Current in Operation
Circuit Current in Non-Operation
FM Voltage
8 - 1
8 - 3
5 - 3
5 - 3
8 - 3
8 - 3
8 - 3
5
5
2 - 3
r
DS(on)
t
f
V
CC(ON)
V
CC(OFF)
f
osc(max)
Δ
f
osc
D max
I
CC(ON)
I
CC(OFF)
V
FMH
V
FML
I
FMH
I
FML
V
OCP
t
bw
V
burst
V
OLP
I
OLP
t
OLP
I
FB(MAX)
V
SET(CC)
V
RES(CC)
I
startup
V
CC(OVP)
I
CC(H)
V
CC
T
J
R
θ
JF
-
-
-
-
3.95
250
15.7
11
74
9.4
82
4.0
25
5.0
4.0
-15.4
15.4
0.81
460
1.24
9.9
-25
1.56
430
6.7
4.3
1.56
35.2
270
8.6
-
52
Ω
ns
V
V
kHz
kHz
%
mA
μA
V
V
μA
μA
V
ns
V
V
μA
s
μA
V
V
mA
V
μA
V
°C
°C/W
12.9
9.0
60
4.0
70
-
-
4.0
3.2
-7.7
7.7
0.67
240
1.00
7.3
-12
0.84
220
4.9
3.5
0.84
28.8
-
5.9
125
-
14.3
10
67
6.7
76
-
14
4.5
3.6
-11.0
11.0
0.74
350
1.12
8.6
-18
1.20
310
5.8
3.9
1.20
32.0
-
7.2
140
-
FM Current
2
OCP Threshold Voltage
Leading Edge Blanking Time
Burst Threshold Voltage
OLP Threshold Voltage
Current at OLP Operation
OLP Delay Time
Maximum FB Current
CC Set Voltage
CC Reset Voltage
Start-Up Current
OVP Operation Voltage
OVP/TSD Latch Sustaining Current
OVP/TSD Latch Release Voltage
Thermal Shutdown
Thermal Resistance
1 - 3
8 - 3
4 - 3
4 - 3
4
4 - 3
4
4 - 3
4 - 3
5
5 - 3
5
5 - 3
-
-
-
-
-
-
-
-
-
-
V
CC
= 25 V
V
CC
= 13 V
V
CC
= 18
t
35.2 V
V
CC
=35.2
t
8.6 V
V
CC
=35.2
t
5.9 V
-
-
Typical values are given for circuit design information only.
Negative current is defined as coming out of (sourcing) the specified terminal.
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