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STR-S5703 Datasheet(PDF) 3 Page - Allegro MicroSystems

Part No. STR-S5703
Description  OFF-LINE SWITCHING REGULATOR WITH BIPOLAR SWITCHING TRANSISTOR
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Maker  ALLEGRO [Allegro MicroSystems]
Homepage  http://www.allegromicro.com
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STR-S5703 Datasheet(HTML) 3 Page - Allegro MicroSystems

   
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STR-S5703
OFF-LINE
QUASI-RESONANT FLYBACK
SWITCHING REGULATOR
www.allegromicro.com
ELECTRICAL CHARACTERISTICS at T
A = +25°C, VIN = 8.5 V, voltage measurements are
referenced to Common (pin 2) (unless otherwise noted).
Limits
Characteristic
Symbol
Test Conditions
Min.
Typ. Max.
Units
On-State Voltage
V
INT
Turn-on, increasing V
IN
7.6
8.0
8.4
V
Under-Voltage Lockout
V
INQ
Turn-off, decreasing V
IN
4.6
4.9
5.2
V
Over-Voltage Threshold
V
OVP(th)
9.2
10.7
V
Output Leakage Current
I
CEX
V
CE = 500 V, VBE = -1.5 V
––
100
µA
Output Saturation Voltage
V
CE(sat)
I
C = 2 A, IB = 400 mA
––
400
mV
V
BE(sat)
I
C = 2 A, IB = 400 mA
––
1.5
V
DC Current Gain
h
FE
V
CE = 4 V, IC = 1 A
23
46
Maximum ON Time
t
on
33
41
µs
Minimum OFF Time
t
off
45
55
µs
Over-Current Threshold
V
OCP(th)
-0.88
-1.0
-1.12
V
Sense Voltage
V
SENSE
I
SENSE = 3.2 mA
31.7
32.0
32.3
V
Inhibit Threshold Voltage
V
INH(th)
Oscillation stops
0.65
0.75
0.85
V
Oscillation synchronized
1.4
2.0
V
Oscillation stops (fault latch set)
3.2
5.1
5.8
V
Latch Holding Current
I
INH
V
IN reduced from 10.7 V to 4 V
––
500
µA
Latch Reset Voltage
V
Q
I
IN ≤ 100 µA, VIN reduced from 10.7 V
2.5
3.1
V
Ref. Voltage Temp. Coeff.
α
VZ
-20
°C ≤ T
F ≤ +100°C, IIN = 3.2 mA
2.5
mV/
°C
Supply Current
I
IN(ON)
Operating
15
28
mA
I
IN(OFF)
––
200
µA
Insulation RMS Voltage
V
WM(RMS)
All terminals simultaneous reference
2000
––
V
metal plate against backside
Thermal Shutdown
T
J
125
150
°C
Thermal Resistance
RθJM
Output junction to mounting surface
2.0
°C/W
NOTES: Negative current is defined as coming out of (sourcing) the specified device terminal.
Typical Data is for design information only.


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