STR-A6259H ALLEGRO [Allegro MicroSystems], STR-A6259H Datasheet - Page 5

• Manufacturer Part Number: STR-A6259H
• Description: Universal-Input 13 W 100 kHz Flyback Switching Regulators
• Manufacturer: ALLEGRO [Allegro MicroSystems]

Continued on next page…
ELECTRICAL CHARACTERISTICS for Controller (MIC), valid at T
Characteristic
Operation Start Voltage
Operation Stop Voltage
Circuit Current In Operation
Initialization Circuit Current
Center Switching Frequency
Frequency Jitter Deviation
Maximum Duty Cycle
FM High Voltage
FM Low Voltage
FM Outflow Current
FM Inflow Current
OCP Threshold Voltage
Leading Edge Blanking Time
Burst Threshold Voltage
OLP Threshold Voltage
Output Current at OLP
Operation
OLP Delay Time
Maximum Feedback Current
STR-A6259H
Universal Input 13 W 100 kHz
Flyback Switching Regulators
Symbol
V
V
I
V
V
I
V
I
CC(OFF)
f
I
I
FB(MAX)
CC(OFF)
CC(ON)
D
V
V
sorcFM
osc(av)
sinkFM
OCP(th)
burst(th)
T
CC(ON)
OLP(th)
I
t
OLP
Δf
HFM
MAX
LFM
OLP
wb
Terminal
5-3
5-3
5-3
5-3
8-3
8-3
8-3
2-3
2-3
2-3
2-3
1-3
8-3
4-3
4-3
4-3
4-3
4-3
(Power supply voltage at which device starts operating)
Measurement circuit 1, V
(Power supply voltage at which device stops operating)
Measurement circuit 1, V
(Inflow current into power supply terminal, in operation)
Measurement circuit 1
(Inflow current into power supply terminal, while subject to
UVLO prior to operation)
Measurement circuit 1, V
(Center oscillation frequency of D terminal)
Measurement circuit 2
Maximum frequency – minimum frequency
Measurement circuit 2
(Maximum width of the low portion of the D terminal
waveform)
Measurement circuit 2
(V
–10 μA)
Measurement circuit 2
(V
10 μA)
Measurement circuit 2
Outflow current from FM terminal at V
Measurement circuit 2
Inflow current into FM terminal at V
Measurement circuit 2
(The drain current at which the low portion of the D
terminal waveform becomes shorter than the high portion,
with V
Measurement circuit 3
(The low portion of the D terminal waveform with
V
Measurement circuit 3
(FB/CC/OLP terminal voltage at which D terminal
waveform oscillation stops due to V
Measurement circuit 4
(FB/CC/OLP terminal voltage at which D terminal
waveform oscillation stops due to V
Measurement circuit 4
(Outflow current from FB/CC/OLP terminal at V
Measurement circuit 4
(Time between surpassing V
Measurement circuit 4
(Outflow current from FB/CC/OLP terminal at V
Measurement circuit 4
OCP
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036
FM
FM
at which the FM current is changed from –10 μA to
= 1 V)
at which the FM current is changed from 10 μA to
OCP
A
= 25°C, V
increasing)
CC
Test Conditions
= 18 V, unless otherwise specified
CC
CC
CC
= 0 though 13.1 to 16.1 V
= 16.1 through 9 to 11 V
= 13 V
OLP(th)
and stop of oscillation)
FM
FB
FB
FM
= V
decreasing from 5 V)
increasing from 5 V)
= V
HFM
LFM
(4.4 V typ.)
FB
FB
(3.7 V typ.)
= 8 V)
= 0 V)
–15.4
Min.
12.9
0.67
0.84
240
220
4.0
3.2
7.7
1.0
7.3
90
70
12
9
–
–
6
Typ.
14.3
0.74
1.12
100
–11
350
310
4.5
3.6
8.6
1.2
10
10
76
18
11
–
–
Max.
15.7
15.4
–7.7
0.81
1.24
1.56
460
430
110
5.0
4.0
9.9
11
25
14
82
25
4
Unit
KHz
kHz
mA
μA
μA
μA
μA
μA
ns
%
V
V
V
V
V
V
V
s
5