STR-S5703 Datasheet, PDF (3/8 Pages) Allegro MicroSystems – OFF-LINE SWITCHING REGULATOR WITH BIPOLAR SWITCHING TRANSISTOR

STR-S5703
OFF-LINE
QUASI-RESONANT FLYBACK
SWITCHING REGULATOR
ELECTRICAL CHARACTERISTICS at T_A = +25°C, V_IN = 8.5 V, voltage measurements are
referenced to Common (pin 2) (unless otherwise noted).
Characteristic
Symbol
Test Conditions
Limits
Min. Typ. Max. Units
On-State Voltage
Under-Voltage Lockout
Over-Voltage Threshold
Output Leakage Current
Output Saturation Voltage
DC Current Gain
Maximum ON Time
Minimum OFF Time
Over-Current Threshold
Sense Voltage
Inhibit Threshold Voltage
V_INT
V_INQ
V_OVP(th)
I_CEX
V_CE(sat)
V_BE(sat)
h_FE
t_on
t_off
V_OCP(th)
V_SENSE
V_INH(th)
Turn-on, increasing V_IN
Turn-off, decreasing V_IN
V_CE = 500 V, V_BE = -1.5 V
I_C = 2 A, I_B = 400 mA
I_C = 2 A, I_B = 400 mA
V_CE = 4 V, I_C = 1 A
I_SENSE = 3.2 mA
Oscillation stops
Oscillation synchronized
7.6 8.0 8.4
V
4.6 4.9 5.2
V
9.2 – 10.7 V
– – 100 µA
– – 400 mV
–
– 1.5
V
23 – 46
–
33 – 41 µs
45 – 55 µs
-0.88 -1.0 -1.12 V
31.7 32.0 32.3 V
0.65 0.75 0.85 V
– 1.4 2.0
V
Oscillation stops (fault latch set)
3.2 5.1 5.8
V
Latch Holding Current
Latch Reset Voltage
Ref. Voltage Temp. Coeff.
Supply Current
Insulation RMS Voltage
I_INH
V_Q
α_VZ
I_IN(ON)
I_IN(OFF)
V_WM(RMS)
V_IN reduced from 10.7 V to 4 V
I_IN ≤ 100 µA, V_IN reduced from 10.7 V
-20°C ≤ T_F ≤ +100°C, I_IN = 3.2 mA
Operating
All terminals simultaneous reference
metal plate against backside
– – 500 µA
2.5 3.1 –
V
– 2.5 – mV/°C
15 – 28 mA
– – 200 µA
2000 – –
V
Thermal Shutdown
Thermal Resistance
T_J
R_θJM
Output junction to mounting surface
125 150 –
– 2.0 –
°C
°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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