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Supertex inc.
N-Channel Depletion-Mode
Vertical DMOS FETs
DN2450
Features
► High input impedance
► Low input capacitance
► Fast switching speeds
► Low on-resistance
► Free from secondary breakdown
► Low input and output leakage
Applications
► Normally-on switches
► Battery operated systems
► Voltage to current converters
► Constant current sources
► Current and voltage limiters
Ordering Information
Part Number Package Option Packing
DN2450K4-G TO-252 (D-PAK) 2000/Reel
DN2450N8-G TO-243AA (SOT-89) 2000/Reel
-G denotes a lead (Pb)-free / RoHS compliant package.
Contact factory for Wafer / Die availablity.
Devices in Wafer / Die form are lead (Pb)-free / RoHS compliant.
Absolute Maximum Ratings
General Description
These low threshold depletion-mode (normally-on) transistors
utilize an advanced vertical DMOS structure and Supertex’s
well-proven silicon-gate manufacturing process. This
combination produces devices with the power handling
capabilities of bipolar transistors and with the high input
impedance and positive temperature coefcient inherent in
MOS devices. Characteristic of all MOS structures, these
devices are 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.
Product Summary
R
BV
DSX
/BV
DGX
DS(ON)
(max)
500V 10Ω 700mA
I
DSS
(min)
Pin Conguration
DRAIN
Parameter Value
Drain-to-source voltage BV
Drain-to-gate voltage BV
DSX
DGX
Gate-to-source voltage ±20V
Operating and storage temperature -55OC to +150OC
Maximum junction temperature 150OC
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.
Typical Thermal Resistance
Package θ
TO-252 (D-PAK) 81OC/W
TO-243AA (SOT-89) 133OC/W
Doc.# DSFP-DN2450
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DRAIN
SOURCE
GATE
TO-252 (D-PAK)
TO-243AA (SOT-89)
GATE
Product Marking
Si YYWW
DN2450
LLLLLLL
Package may or may not include the following marks: Si or
DN4EW
Package may or may not include the following marks: Si or
YY = Year Sealed
WW = Week Sealed
L = Lot Number
= “Green” Packaging
TO-252 (D-PAK)
W = Code for week sealed
= “Green” Packaging
TO-243AA (SOT-89)
Supertex inc.
www.supertex.com
SOURCE
DRAIN
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0V
Thermal Characteristics
I
Package
D
(continuous)
†
TO-252 350mA 1.0A 2.5W
TO-243AA 230mA 900mA 1.6W
Notes:
† ID (continuous) is limited by max rated Tj.
‡ Mounted on FR4 board, 25mm x 25mm x 1.57mm.
I
D
(pulsed)
Power Dissipation
@TA = 25OC
‡
‡
DN2450
†
I
DR
350mA 1.0A
230mA 900mA
I
DRM
Electrical Characteristics (T
= 25OC unless otherwise specied)
A
Sym Parameter Min Typ Max Units Conditions
V
ΔV
BV
GS(OFF)
GS(OFF)
I
GSS
Drain-to-source breakdown voltage 500 - - V VGS = -5.0V, ID = 100µA
DSX
Gate-to-source off voltage -1.5 - -3.5 V VDS = 25V, ID = 10µA
Change in V
Gate body leakage
with temperature - - -4.5 mV/OC VDS = 25V, ID = 10µA
GS(OFF)
‡
- - 100 nA VGS = ±20V, V
- - 1.0 µA VDS = Max rating, VGS = -10V
I
D(OFF)
I
DSS
R
DS(ON)
ΔR
DS(ON)
G
C
ISS
C
OSS
C
RSS
t
d(ON)
t
t
d(OFF)
t
V
SD
t
rr
Notes:
1. All D.C. parameters 100% tested at 25OC unless otherwise stated. (Pulse test: 300µs pulse, 2% duty cycle.)
2. All A.C. parameters sample tested.
Drain-to-source leakage current
- - 1.0 mA
VDS = 0.8 Max Rating,
VGS = -10V, TA = 125OC
Saturated drain-to-source current 700 - - mA VGS = 0V, V
Static drain-to-source on-state
resistance
Change in R
Forward transconductance 500 - - mmho VDS = 10V, ID = 300mA
FS
with temperature - - 1.1 %/OC VGS = 0V, ID = 300mA
DS(ON)
Input capacitance - 150 200
Common source output capacitance - 40 55
Reverse transfer capacitance - 15 25
- 7.0 10 Ω VGS = 0V, ID = 300mA
VGS = -10V,
pF
VDS = 25V,
f = 1MHz
Turn-on delay time - - 15
Rise time - - 20
r
Turn-off delay time - - 15
Fall time - - 15
f
ns
VDD = 25V,
ID = 300mA,
R
= 25Ω,
GEN
Diode forward voltage drop - - 1.8 V VGS = -5.0V, ISD = 300mA
Reverse recovery time - 800 - ns VGS = -5.10V, ISD = 300mA
DS
= 0V
DS
= 25V
Switching Waveforms and Test Circuit
90%
INPUT
10%
-10V
VDD
OUTPUT
0V
Doc.# DSFP-DN2450
B062813
t
d(ON)
t
(ON)
10%
90%
t
(OFF)
t
r
t
d(OFF)
t
90%
VDD
Pulse
Generator
R
GEN
f
10%
INPUT
R
L
OUTPUT
D.U.T.
Supertex inc.
2
www.supertex.com
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3-Lead TO-252 (D-PAK) Package Outline (K4)
DN2450
E
4
1 2 3
Front View
b3
E1
L3
θ1
D1
D
L4
L5
Note 1
b2
e
Rear View
b
View B
Side View
A
c2
H
L2
Gauge
Plane
θ
L
L1
A1
Seating
Plane
View B
Note:
1. Although 4 terminal locations are shown, only 3 are functional. Lead number 2 was removed.
Symbol A A1 b b2 b3 c2 D D1 E E1 e H L L1 L2 L3 L4 L5
Dimen-
sion
(inches)
JEDEC Registration TO-252, Variation AA, Issue E, June 2004.
* This dimension is not specied in the JEDEC drawing.
†
This dimension differs from the JEDEC drawing.
Drawings not to scale.
Supertex Doc. #: DSPD-3TO252K4, Version F040910.
MIN .086 .000* .025 .030 .195 .018 .235 .205 .250 .170
NOM - - - - - - .240 - - - - .060 - - - - -
MAX .094 .005 .035 .045 .215 .035 .245 .217* .265 .200* .410 .070 .050 .040 .060 10O15
.090
BSC
.370 .055
.108
REF
.035 .025* .035†0O0
.020
BSC
θ
θ1
O
O
Doc.# DSFP-DN2450
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Supertex inc.
3
www.supertex.com
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3-Lead TO-243AA (SOT-89) Package Outline (N8)
D
D1
E
H
E1
C
DN2450
L
1 2 3
b
e
e1
Top View
b1
A
Side View
Symbol A b b1 C D D1 E E1 e e1 H L
†
1.50
BSC
3.00
BSC
3.94 0.73
Dimensions
(mm)
MIN 1.40 0.44 0.36 0.35 4.40 1.62 2.29 2.00
NOM - - - - - - - - - -
MAX 1.60 0.56 0.48 0.44 4.60 1.83 2.60 2.29 4.25 1.20
JEDEC Registration TO-243, Variation AA, Issue C, July 1986.
† This dimension differs from the JEDEC drawing
Drawings not to scale.
Supertex Doc. #: DSPD-3TO243AAN8, Version F111010.
(The package drawing(s) in this data sheet may not reect the most current specications. For the latest package outline
information go to http://www.supertex.com/packaging.html.)
Supertex inc. does not recommend the use of its products in life support applications, and will not knowingly sell them for use in such applications unless it receives
an adequate “product liability indemnification insurance agreement.” Supertex inc. does not assume responsibility for use of devices described, and limits its liability
to the replacement of the devices determined defective due to workmanship. No responsibility is assumed for possible omissions and inaccuracies. Circuitry and
specifications are subject to change without notice. For the latest product specifications refer to the Supertex inc. (website: http//www.supertex.com)
©2013 Supertex inc. All rights reserved. Unauthorized use or reproduction is prohibited.
Doc.# DSFP-DN2450
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Supertex inc.
1235 Bordeaux Drive, Sunnyvale, CA 94089
Tel: 408-222-8888
www.supertex.com
†
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