1A, 80V, 0.750 Ohm, Current Limited,
N-Channel Power MOSFET
The RLP1N08LE is a semi-smart monolithic power circuit
which incorporates a lateral bipolar transistor, two resistors,
a zener diode, and a PowerMOS transistor. Good control of
the current limiting levels allows use of these devices where
a shorted load condition may be encountered. “Logic level”
gates allow this device to be fully biased on with only 5V
from gate to source. The zener diode provides ESD
protection up to 2kV. These devices can be produced on the
standard PowerMOS production line.
Formerly developmental type TA09842.
Ordering Information
PART NUMBERPACKAGEBRAND
RLP1N08LETO-220ABL1N08LE
NOTE: When ordering, use the entire part number.
File Number
Features
• 1A, 80V
•r
•I
• Built-in Current Limiting
• ESD Protected
• Controlled Switching Limits EMI and RFI
• Specified for 150
• Temperature Compensated Spice Model Provided
• Related Literature
- TB334 “Guidelines for Soldering Surface Mount
= 0.750Ω
DS(ON)
at 150oC = 1.5A Maximum
LIMIT
o
C Operation
Components to PC Boards”
Symbol
D
2252.3
Packaging
G
S
JEDEC TO-220AB
SOURCE
DRAIN
GATE
DRAIN (FLANGE)
6-435
CAUTION: These devices are sensitive to electrostatic discharge; follow proper ESD Handling Procedures.
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operationofthe
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
L
pkg
300
260
o
C
o
C
o
C
NOTE:
1. TJ= 25oC to 150oC.
Electrical SpecificationsT
= 25oC, Unless Otherwise Specified
C
PARAMETERSYMBOLTEST CONDITIONSMINTYPMAXUNITS
Drain to Source Breakdown VoltageBV
Gate to Threshold VoltageV
Zero Gate Voltage Drain CurrentI
DSSID
GS(TH)VGS
DSS
= 250µA, VGS = 0V, Figure 780--V
= VDS, ID = 250µA, Figure 81-2V
VDS = 65V, VGS = 0VTC = 25oC--1µA
TC = 150oC--50µA
Gate to Source Leakage CurrentI
Drain to Source On Resistance (Note 2)r
Limiting CurrentI
DS(ON)ID
DS(Lim)VDS
Turn-On Timet
Turn-On Delay Timet
d(ON)
Rise Timet
Turn-Off Delay Timet
d(OFF)
Fall Timet
Turn-Off Timet
(OFF)
Thermal Resistance Junction to CaseR
Thermal Resistance Junction to AmbientR
GSS
(ON)
θJC
θJA
VGS = 5V, TC = 150oC--50µA
= 1A, VGS = 5V
Figure 6
= 15V, VGS = 5V
Figure 3
VDD = 30V, ID = 1A, VGS = 5V, RGS = 25Ω
RL = 30Ω
r
TC = 25oC--0.750Ω
TC = 150oC--1.5Ω
TC = 25oC1.8-3A
TC = 150oC1.1-1.5A
--6.5µs
--1.5µs
1-5µs
--7.5µs
f
1-5µs
--12.5µs
--4.17oC/W
TO-220AB--62
o
C/W
Electrostatic VoltageESDHuman Model (100pF, 1.5kΩ)2000--V
3. Repititive rating: pulse width limited by maximum junction temperature.
6-436
ISD = 1A--1.5V
ISD = 1A--1ms
rr
Page 3
RLP1N08LE
Typical Performance Curves
1.2
1.0
0.8
0.6
0.4
0.2
POWER DISSIPATION MULTIPLIER
0
0255075100150
TC, CASE TEMPERATURE (oC)
Unless Otherwise Specified
125
FIGURE 1. NORMALIZED POWERDISSIPATION vs CASE
TEMPERATURE
2.0
1.5
1.0
0.5
0
NORMALIZED DRAIN TO SOURCE CURRENT
-50050100150
T
, CASE TEMPERATURE (oC)
C
PULSE DURATION = 80µs
DUTY CYCLE = 0.5% MAX.
= 10V, VGS = 5V
V
DS
10
TJ = MAX RATED
ID MAX AT 25oC
ID MIN AT 150oC
1.0
OPERATION IN THIS
AREA MAY BE
LIMITED BY r
, DRAIN CURRENT (A)
D
I
0.1
110100
DS(ON)
, DRAIN TO SOURCE VOLTAGE (V)
V
DS
V
DSS
MAX = 80V
100µs
1ms
10ms
DC
FIGURE 2. FORWARD BIAS SAFE OPERATING AREA
3.0
TC = 25oC
2.5
2.0
1.5
1.0
0.5
, DRAIN TO SOURCE CURRENT (A)
DS
I
0
012345
PULSE DURATION = 80µs
DUTY CYCLE = 0.5% MAX.
V
, DRAIN TO SOURCE VOLTAGE (V)
DS
8V
6V
5V
VGS = 10V
4V
3V
2V
FIGURE 3. NORMALIZED CURRENT LIMIT vs CASE
FIGURE 4. SATURATION CHARACTERISTICS
TEMPERATURE
4.2
PULSE TEST
PULSE DURATION = 80µs
3.5
DUTY CYCLE = 0.5% MAX
V
= 15V
DS
2.8
2.1
1.4
, DRAIN TO SOURCE CURRENT (A)
0.7
DS(ON)
I
0
02.55.07.5
, GATE TO SOURCE VOLTAGE (V)
V
GS
-55oC
25oC
150oC
2.5
VGS = 5V, ID = 1A
PULSE DURATION = 80µs
DUTY CYCLE = 0.5% MAX.
2.0
1.5
1.0
ON RESISTANCE
0.5
NORMALIZED DRAIN TO SOURCE
0
-50050100150
TJ, JUNCTION TEMPERATURE (oC)
FIGURE 5. TRANSFER CHARACTERISTICSFIGURE 6. NORMALIZED DRAIN TO SOURCEON
RESISTANCE vs JUNCTION TEMPERATURE
6-437
Page 4
RLP1N08LE
Typical Performance Curves
1.4
ID = 250µA
1.2
1.0
0.8
BREAKDOWN VOLTAGE
0.6
NORMALIZED DRAIN TO SOURCE
0.4
-50050100150
T
, JUNCTION TEMPERATURE (oC)
J
Unless Otherwise Specified (Continued)
FIGURE 7. NORMALIZED DRAIN TO SOURCE BREAKDOWN
VOLTAGE vs JUNCTION TEMPERATURE
500
VGS = 0V, f = 1MHz
= CGS + C
C
400
300
200
C, CAPACITANCE (pF)
100
C
OSS
C
RSS
C
ISS
C
C
ISS
RSS
OSS
= C
GD
≈ CDS + C
GD
GD
1.2
1.1
1.0
0.9
0.8
NORMALIZED GATE
THRESHOLD VOLTAGE
0.7
0.6
-50050100150
, JUNCTION TEMPERATURE (oC)
T
J
VGS = V
DS
ID = 250µA
FIGURE 8. NORMALIZED GATE THRESHOLD VOLTAGE vs
JUNCTION TEMPERATURE
V
DD
R
L
V
V
GS
+
0
G
R
GS
D
DS
0
0510152025
V
, DRAIN TO SOURCE VOLTAGE (V)
DS
S
FIGURE 9. CAPACITANCE vs DRAIN TO SOURCE VOLTAGEFIGURE 10. SWITCHING TEST CIRCUIT
20
HSTR = 0oC/W
15
1oC/W
2oC/W
10
5oC/W
10oC/W
5
, DRAIN TO SOURCE VOLTAGE (V)
25oC/W
DS
V
0
255075100125150
, AMBIENT TEMPERATURE (oC)
T
A
FREE AIR R
TJ = 150oC
I
= 1.5A
LIM
R
= 4.17oC/W
θJC
= 80oC/W
θJC
FIGURE 11. DC OPERATION IN CURRENT LIMITING
80
60
DUTY CYCLE = 20%
40
20
, DRAIN TO SOURCE VOLTAGE (V)
MAX PULSE WIDTH = 100ms
DS
TJ = 150oC, I
V
0
255075100125150
50%
= 1.5A, R
LIM
, AMBIENT TEMPERATURE (oC)
T
A
NOTE: Heatsink thermal resistance = 2
10%5%2% 1%
= 4.17oC/W
θJC
o
C/W
FIGURE 12. MAXIMUM VDS vs TA IN CURRENT LIMITING
6-438
Page 5
RLP1N08LE
Typical Performance Curves
80
MAX PULSE WIDTH = 100ms
TJ = 150oC
I
= 1.5A
LIM
R
= 4.17oC/W
θJC
60
40
DUTY CYCLE = 20%
20
, DRAIN TO SOURCE VOLTAGE (V)
DS
V
0
255075100125150
50%
, AMBIENT TEMPERATURE (oC)
T
A
10%
Unless Otherwise Specified (Continued)
5%2% 1%
NOTE: Heatsink thermal resistance = 5oC/W
FIGURE 13. MAXIMUM VDS vs TA IN CURRENT LIMITING
80
MAX PULSE WIDTH = 100ms
T
= 150oC
J
I
= 1.5A
LIM
R
= 4.17oC/W
θJC
60
1%
80
MAX PULSE WIDTH = 100ms
TJ = 150oC
I
= 1.5A
LIM
R
= 4.17oC/W
θJC
60
40
DUTY CYCLE = 20%
20
, DRAIN TO SOURCE VOLTAGE (V)
DS
V
0
255075100125150
10%
50%
, AMBIENT TEMPERATURE (oC)
T
A
5%
2%1%
NOTE: Heatsink thermal resistance = 10oC/W
FIGURE 14. MAXIMUM VDS vs TA IN CURRENT LIMITING
80
DUTY CYCLE = 1%
60
MAX PULSE WIDTH = 100ms
T
= 150oC
J
I
= 1.5A
LIM
R
= 4.17oC/W
θJC
40
20
, DRAIN TO SOURCE VOLTAGE (V)
DS
V
0
255075100125150
5%
10%
20%
50%
, AMBIENT TEMPERATURE (oC)
T
A
DUTY CYCLE = 2%
NOTE: Heatsink thermal resistance = 25oC/W
FIGURE 15. MAXIMUM VDS vs TA IN CURRENT LIMITING
10
8
STARTING
TEMP = 25oC
C (s)
o
TIME TO 150
125oC100oC75oC50oC
6
4
2
R
θJC
4.17
o
=
C/W
40
10%
20
, DRAIN TO SOURCE VOLTAGE (V)
DS
V
0
255075100125150
2%
20%
50%
5%
, AMBIENT TEMPERATURE (oC)
T
A
NOTE: No external heatsink.
FIGURE 16. MAXIMUM VDS vs TA IN CURRENT LIMITING
C (s)
o
TIME TO 150
10
8
6
125oC100oC75oC50oC
4
2
R
θJC
STARTING
TEMP = 25oC
= 4.17oC/W
0
05101520
, DRAIN TO SOURCE VOLTAGE (V)
V
DS
NOTE: Heatsink thermal resistance = 2oC/W
Heatsink thermal capacitance = 4j/oC
FIGURE 17. TIME TO 150oC IN CURRENT LIMITING
6-439
0
05101520
, DRAIN TO SOURCE VOLTAGE (V)
V
DS
NOTE: Heatsink thermal resistance = 5oC/W
Heatsink thermal capacitance = 2j/oC
FIGURE 18. TIME TO 150oC IN CURRENT LIMITING
Page 6
RLP1N08LE
Typical Performance Curves
10
8
STARTING
C (s)
6
o
125oC 100oC 75oC 50oC
4
TIME TO 150
2
0
05101520
, DRAIN TO SOURCE VOLTAGE (V)
V
DS
TEMP = 25oC
Unless Otherwise Specified (Continued)
R
θJC
NOTE: Heatsink thermal resistance = 10oC/W
Heatsink thermal capacitance = 1j/oC
FIGURE 19. TIME TO 150oC IN CURRENT LIMITING
10
8
= 4.17oC/W
10
8
STARTING
C (s)
6
o
125oC
4
TIME TO 150
2
0
05101520
100oC
TEMP = 25
75oC
V
, DRAIN TO SOURCE VOLTAGE (V)
DS
50oC
o
C
R
NOTE: Heatsink thermal resistance = 25oC/W
Heatsink thermal capacitance = 0.5j/oC
FIGURE 20. TIME TO 150oC IN CURRENT LIMITING
= 4.17oC/W
θJC
C (s)
6
o
4
TIME TO 150
125oC
2
0
05101520
STARTING
TEMP = 25oC
100oC
75oC
V
, DRAIN TO SOURCE VOLTAGE (V)
DS
50oC
NOTE: No external heatsink.
FIGURE 21. TIME TO 150oC IN CURRENT LIMITING
6-440
Page 7
RLP1N08LE
Temperature Dependence of Current Limiting and
Switching Speed
The RLP1N08LE is a monolithic power device which
incorporates a logic level PowerMOS transistor with a
resistor in series with the source. The base and emitter ofa
lateral bipolar transistor is connected across this resistor,
and the collector of the bipolar transistor is connected to
the gate of the PowerMOS transistor. When the voltage
across the resistor reaches the value required to forward
bias the emitter base junction of the bipolar transistor, the
bipolar transistor “turns on”. A series resistor is
incorporated in series with the gate of the PowerMOS
transistor allowing the bipolar transistor to drive the gate of
the PowerMOS transistorsto a voltagewhich just maintains
a constant current in the PowerMOS transistor. Since both
the resistance of the resistor in series with the PowerMOS
transistor source and voltage required to forward bias the
base emitter junction of the bipolar transistor vary with the
temperature, the current at which the device limits is a
function of temperature. This dependence is shown in
figure 3.
The resistor in series with the gate of the PowerMOS
transistor results in much slower switching than in most
PowerMOS transistors. This is an advantage where fast
switchingcan cause EMI or RFI.The switching speedis very
predictable, and a minimum as well as maximum fall time is
given in the device characteristics for this type.
DC Operation of the RLP1N08LE
The limit of the drain to source voltage for operation in
current limiting on a steady state (DC) basis is shown as
Figure 11. The dissipation inthe device is simply the applied
drain tosource voltage multipliedby the limiting current.This
device,like most Power MOSFET devices today, is limited to
o
150
C. The maximum voltage allowable can, therefore be
In many applications either the drain to source voltage or
the gate driveis not available100% of the time. The copper
header on which the RLP1N08LE is mounted has a very
large thermal storage capability, so for pulse widths of less
than 100 milliseconds, the temperature of the header can
be considered a constant case temperature calculated
simply as:
T
VDSIDDR
C
×××()T
θCA
+=
AMBIENT
(EQ. 2)
Generally the heat storage capability of the silicon chip in a
power transistor is ignored for duty cycle calculations.
Making this assumption, limiting junction temperature to
o
150
C and using the TC calculated above, the expression
for maximum V
V
------------------------------------------=
DS
I
LIM
under duty cycle operation is:
DS
150 TC–
DR
××
θJC
(EQ. 3)
These values are plotted as Figures 12 thru 16 for various
heat sink thermal resistances.
Limited Time Operations of the RLP1N08LE
Protection for a limited period of time is sufficient for many
applications. As stated above the heat storage in the silicon
chip can usually be ignored for computations of over 10
milliseconds and the thermal equivalent circuit reduces to a
simple enough circuit to allow easy computation on the
limiting conditions. The variation in limiting current with
temperature complicates the calculation of junction
temperature, but a simple straight line approximation of the
variation is accurate enough to allow meaningful
computations. The curves shown as figures 17 thru 21 give
an accurate indication of how long the specified voltage can
be applied to the device in the current limiting mode without
exceeding the maximum specified 150
termperature. In practice this tells you how long you have to
alleviate the condition causing the current limiting to occur.
All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certification.
Intersil semiconductor products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which mayresult
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see web site http://www.intersil.com
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NORTH AMERICA
Intersil Corporation
P. O. Box 883, Mail Stop 53-204
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TEL: (407) 724-7000
FAX: (407) 724-7240
6-443
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