str-a6251md Allegro MicroSystems, Inc., str-a6251md Datasheet - Page 3

• Manufacturer Part Number: str-a6251md
• Description: Universal-input / 15 W 67 Khz Flyback Switching Regulator | Str-a6251md
• Manufacturer: Allegro MicroSystems, Inc.

Typical values are given for circuit design information only.
Negative current is defi ned as coming out of (sourcing) the specifi ed terminal.
ELECTRICAL CHARACTERISTICS at T
Characteristic
Drain-to-Source Breakdown Volt.
Drain Leakage Current
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
FM Current
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
www.allegromicro.com
8 - 1
8 - 1
8 - 3
5 - 3
5 - 3
8 - 3
8 - 3
8 - 3
2 - 3
1 - 3
8 - 3
4 - 3
4 - 3
4 - 3
4 - 3
4 - 3
5 - 3
5 - 3
Pin
No.
8
5
5
2
4
4
5
5
-
-
A
Symbol
V
V
V
V
V
V
f
I
I
= 25°C, V
D max
I
r
osc(max)
CC(OFF)
FB(MAX)
I
CC(ON)
V
RES(CC)
CC(OVP)
I
(BR)DSS
CC(OFF)
V
V
SET(CC)
Δf
V
V
CC(ON)
startup
R
DS(on)
I
I
I
I
t
CC(H)
V
DSS
FMH
t
FML
OLP
OLP
T
FMH
OCP
burst
FML
OLP
bw
t
θ
CC
osc
f
J
JF
CC
Test Conditions
I
V
V
V
I
-
V
V
-
-
-
-
V
fosc = f
fosc < f
-
-
-
-
-
-
-
-
V
V
V
V
V
-
-
D
D
1
DS
1
CC
CC
CC
CC
CC
CC
CC
CC
= 18 V (unless otherwise specifi ed).
= 300 μA,
= 0.4 A
– V
– V
67 kHz Flyback Switching Regulator
= 650 V,
= 0
= 15.7
= 12 V
= 25 V
= 13 V
= 18
=35.2
=35.2
3
3
osc(max)
osc(max)
= 0 V (short)
= 0 V (short)
15.7 V
35.2 V
8.6 V
5.9 V
9 V
Universal-Input/13 W
12.9
0.67
1.00
0.84
0.84
28.8
Min
-7.7
650
240
220
125
9.0
4.0
4.0
3.2
7.7
7.3
-12
4.9
3.5
5.9
60
70
-
-
-
-
-
-
-
STR-A6251MD
Ratings
-11.0
14.3
0.74
1.12
1.20
1.20
32.0
11.0
Typ
350
310
140
-18
6.7
4.5
3.6
8.6
5.8
3.9
7.2
10
67
76
14
-
-
-
-
-
-
-
-15.4
Max
3.95
15.7
15.4
0.81
1.24
1.56
1.56
35.2
300
250
460
430
270
-25
9.4
4.0
5.0
4.0
9.9
6.7
4.3
8.6
11
74
82
25
52
-
-
Units
°C/W
kHz
kHz
μA
μA
mA
mA
μA
μA
μA
μA
μA
V
V
°C
ns
ns
V
%
Ω
V
V
V
V
V
V
V
V
V
s
3