A6259H Просмотр технического описания (PDF) - Allegro MicroSystems
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A6259H Datasheet PDF : 13 Pages
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STR-A6259H
Universal Input 13 W 100 kHz
Flyback Switching Regulators
SwRitecghuilnagtors
100 Ω
10V
VDD
VD
8
7
D
D
5
VCC
STR-A6259H
FB/CC
S/OCP FM/SS GND /OLP
1
2
3
4
A
47nF
Icc
5.1V
Vcc
Measurement Circuit 1
18V
Vcc(ON)
13V
Vcc
0V
VD
+ Icc
1µF
Icc(OFF)
Icc
Vcc(OFF)
Vcc(OVP) 36V
Vcc
18V
8.4V
Vcc(La.OFF)
VD
Icc
140µA typ.
4µA
typ.
Icc(H)
Measurement Circuit 2
100 Ω
10V
VDD
VD
8
7
D
D
5
VCC
STR-A6259H
S/OCP FM/SS GND
1
2
3
IFM
A
FB/CC
/OLP
4
18V
5.1V Vcc
V FM
VCC
V FM
IFM
0µA
+
1µF
VD
18V
V H FM
IsinkFM
f os c (Hi)
VL FM
VL FM+(VHFM-VL FM)/2
IsorcFM
·Δf =fosc(Hi)-fosc(Lo)
·Dmax=T2/T1 100
T2
f osc (Lo)
f osc(av)
T1
10V
90%
10%
VD
0V
tf
Measurement Circuit 3
ID
0.4A
VD
8
7
D
D
5
VCC
STR-A6259H
FB/CC
S/OCPFM/SS GND /OLP
1
2
3
4
V OCP
18V
47nF 5.1V Vcc
Vcc
V OCP
VD
+
1µF
18V
Vocp
0V
V D( Lo)
·RDS(ON)=VD(Lo) / 0.4
1V
Tbw
7
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036
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