4 page
3.3
205 Crawford Street, Leominster, MA 01453 USA (508) 534-5776 FAX (508) 537-4246
OM7620ST
TYPICAL APPLICATIONS
+25V
VIN
Adjust
OM7620ST
VOUT R1
VO
IO
1.25
VIN
100
R2
Vss*
2N5640
* To provide current limiting of I
O to the
system ground, the source of the FET
must be tied to a negative voltage
below -1.25 V.
VREF
VREF
R2
R1 =
IDSS
IOmax + IDSS
VO < BVDSS + 1.25 V + VSS
ILmin – IDSS < IO < 1.5 A
As shown 0 < IO < 1 A
ADJUSTABLE CURRENT LIMITER
D1
VIN
VOUT
OM7620ST
1N4002
1.0µF
MPS2222
TTL
Control
1 K
720
Adjust
120
Minimum
VOUT = 1.25 V
D1 protects the device during an input short circuit.
5 V ELECTRONIC SHUT DOWN REGULATOR
VIN
VOUT
OM7620ST
Adjust
R2
MPS2907
50 K
240
IN4001
+
10 µF
(VREF) + IAdj
1.25 V
IOUT =
@
R1
R1
10mA IOUT 1.5 A
VIN
VOUT
Adjust
R1
IOUT
IAdj
OM7620ST
SLOW TURN-ON CURRENT
CURRENT REGULATOR
123
Tab
Isolated
Non-Isolated
Front View
Front View
Pin 1 - Adjust
Pin 1 - Adjust
Pin 2 - Output
Pin 2 - Output
Pin 3 - Input
Pin 3 - Input
Tab
- Isolated
Tab
- Output
CONNECTION DIAGRAM
.430
.410
.200
.190
.038 MAX.
.005
.120 TYP.
.537
.527
.665
.645
.420
.410
.150
.140
.750
.500
.100 TYP.
.035
.025
.045
.035
MECHANICAL OUTLINE
NOTES
• Case is metal/hermetically sealed
• Isolated Tab
