DN1509
N-Channel Depletion-Mode Vertical DMOS FET
Features
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High input impedance
Low input capacitance
Fast switching speeds
Low ON-resistance
Free from secondary breakdown
Low input and output leakages
General Description
The Supertex DN1509 is suitable for high voltage transient
protection for LDO in automobile applications during “load
dump” conditions.
This low threshold, depletion-mode (normally-on)
transistor utilizes an advanced vertical DMOS structure
and Supertex’s well-proven silicon-gate manufacturing
process. This combination produces a device with the
power handling capabilities of bipolar transistors and
with the high input impedance and positive temperature
coefficient inherent in MOS devices. Characteristic of all
MOS structures, this device is free from thermal runaway
and thermally-induced secondary breakdown.
Supertex’s vertical DMOS FETs are ideally suited to a
wide range of switching and amplifying applications where
very low threshold voltage, high breakdown voltage, high
input impedance, low input capacitance, and fast switching
speeds are desired.
Applications
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Normally-on switches
Battery operated systems
Converters
Linear amplifiers
Constant current sources
Telecom
Ordering Information
Device
DN1509
Package Option
TO-243AA (SOT-89)
DN1509N8-G
Product marking for TO-243AA:
BV
DSX
/BV
DGX
90V
R
DS(ON)
(max)
6.0Ω
I
DSS
(typ)
540mA
where
DN5A
= 2-week alpha date code
-G indicates package is RoHS compliant (‘Green’)
Absolute Maximum Ratings
Parameter
Drain to source voltage
Drain to gate voltage
Gate to source voltage
Operating and storage temperature
Soldering temperature
1
Value
BV
DSX
BV
DGX
±20V
-55°C to +150°C
+300°C
Pin Configuration
D
Absolute Maximum Ratings are those values beyond which damage to the device
may occur. Functional operation under these conditions is not implied. Continuous
operation of the device at the absolute rating level may affect device reliability. All
voltages are referenced to device ground.
Note 1.
Distance of 1.6mm from case for 10 seconds.
G
D
(Top View)
S
TO-243AA (SOT-89)
DN1509
Electrical Characteristics
(T =25°C unless otherwise specified)
A
Symbol
Parameter
Min
Typ
Max
Units
Conditions
BV
DSX
V
GS(OFF)
ΔV
GS(OFF)
I
GSS
I
D(OFF)
I
DSS
R
DS(ON)
ΔR
DS(ON)
G
FS
C
ISS
C
OSS
C
RSS
t
d(ON)
t
r
t
d(OFF)
t
f
V
SD
t
rr
Drain-to-source breakdown voltage
Gate-to-source OFF voltage
V
GS(OFF)
change with temperature
Gate body leakage
Drain-to-source leakage current
Saturated drain-to-source current
Static drain-to-source ON-state resistance
Change in R
DS(ON)
with temperature
Forward transconductance
Input capacitance
Common source output capacitance
Reverse transfer capacitance
Turn-ON delay time
Rise time
Turn-OFF delay time
Fall time
Diode forward voltage drop
Reverse recovery time
90
-1.8
-
-
-
-
300
-
-
200
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
540
3.2
-
-
70
20
6.0
12
16
15
25
-
400
-
-3.5
4.5
100
1.0
1.0
-
6.0
1.1
-
150
40
15
30
45
45
60
1.8
-
V
V
mV/
O
C
nA
µA
mA
mA
Ω
%/
O
C
mmho
pF
V
GS
= -5V, I
D
= 1.0µA
I
D
= 10µA
V
DS
= 15V, I
D
= 10µA
V
GS
= ±20V, V
DS
= 0V
V
DS
= Max rating, V
GS
= -5.0V
V
DS
= 0.8 Max Rating,
V
GS
= -5.0V, T
A
= 125
O
C
V
GS
= 0V, V
DS
= 25V
V
GS
= 0V, I
D
= 200mA
V
GS
= 0V, I
D
= 200mA
V
DS
= 10V, I
D
= 200mA
V
GS
= -10V, V
DS
= 25V,
f = 1MHz
ns
V
DD
= 25V,
I
D
= 100mA,
R
GEN
= 25Ω
V
GS
= 0V, I
SD
= 500mA
V
GS
= 0V, I
SD
= 500mA
V
ns
Notes:
1.All D.C. parameters 100% tested at 25
O
C unless otherwise stated. (Pulse test: 300µs pulse, 2% duty cycle.)
2.All A.C. parameters sample tested.
Thermal Characteristics
Package
TO-243AA
I
D
(continuous)
ID
†
Power Dissipation
@T
A
= 25 C
O
θ
JC
( C/W)
O
θ
JA
( C/W)
O
(pulsed)
I
DR
†
360mA
I
DRM
500mA
360mA
500mA
1.6W
‡
15
78
‡
Notes:
† ID (continuous) is limited by max rated T
J
of 150
O
C.
‡ Mounted on FR4 board, 25mm x 25mm x 1.57mm.
Switching Waveforms and Test Circuit
0V
Input
-10V
10%
t
(ON)
t
d(ON)
V
DD
Output
0V
10%
90%
t
r
t
(OFF)
t
d(OFF)
t
f
10%
Input
90%
Pulse
Generator
R
GEN
90%
V
DD
R
L
OUTPUT
D.U.T
2
DN1509
TO-243AA (SOT-89) Package Outline (N8)
4.50 ± 0.10
1.72 ± 0.10
0.40 ± 0.05
Exclusion Zone
1.50 ± 0.10
4.10 ± 0.15
2.45 ± 0.15
2.21 ± 0.08
No Vias/Traces in
this area. Shape
of pad may vary.
1.05 ± 0.15
0.42 ± 0.06
1.50 BSC
3.00 BSC
0.5 ± 0.06
Top View
Side View
Bottom View
Notes:
1. All dimensions are in millimeters; all angles in degrees.
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline
information go to
http://www.supertex.com/packaging.html.)
Doc.# DSFP-DN1509
NR111006
3
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