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STD35NF3LL
N-channel 30V - 0.014 - 35A - DPAK STripFETTM II Power MOSFET
General features
Type STD35NF3LL

VDSS 30V
RDS(on) <0.0195
ID 35A
Optimal RDS(on) x Qg trade-off @ 4.5V Conduction losses reduced Switching losses reduced Low threshold drive
DPAK
3 1
Description
This application specific Power MOSFET is the third generation of STMicroelectronics unique "single feature sizeTM" strip-based process. The resulting transistor shows the best trade-off between on-resistance and gate charge. When used as high and low side in buck regulators, it gives the best performance in terms of both conduction and switching losses. This is extremely important for motherboards where fast switching and high efficiency are of paramount importance. remarkable manufacturing reproducibility.
Internal schematic diagram
Applications
Switching application
Order codes
Part number STD35NF3LLT4 Marking D35NF3LL Package DPAK Packaging Tape & reel
February 2007
Rev 5
1/13
www.st.com 13
Contents
STD35NF3LL
Contents
1 2 Electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Electrical characteristics (curves) ............................. 6
3 4 5 6
Test circuit
................................................ 8
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Packing mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
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STD35NF3LL
Electrical ratings
1
Electrical ratings
Table 1.
Symbol VDS VGS ID ID IDM
(1)
Absolute maximum ratings
Parameter Drain-source voltage (VGS = 0) Gate- source voltage Drain current (continuous) at TC = 25C Drain current (continuous) at TC = 100C Drain current (pulsed) Total dissipation at TC = 25C Derating factor Value 30 16 35 25 140 50 0.33 300 -55 to 175 Max. operating junction temperature Unit V V A A A W W/C mJ C
Ptot EAS (2) Tstg Tj
Single pulse avalanche energy Storage temperature
1. Pulse width limited by safe operating area. 2. Starting Tj = 25 oC, ID = 17.5A, VDD =24V
Table 2.
Rthj-case Rthj-amb TJ
Thermal data
Thermal resistance junction-case max Thermal resistance junction-to ambient max Maximum lead temperature for soldering purpose 3 100 300 C/W C/W C
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Electrical characteristics
STD35NF3LL
2
Electrical characteristics
(TCASE=25C unless otherwise specified) Table 3.
Symbol V(BR)DSS IDSS IGSS VGS(th) RDS(on)
On/off states
Parameter Drain-source breakdown voltage Zero gate voltage drain current (VGS = 0) Gate-body leakage current (VDS = 0) Gate threshold voltage Static drain-source on resistance Test conditions ID = 250A, VGS =0 VDS = Max rating VDS = Max rating @125C VGS = 16V VDS = VGS, ID = 250A VGS = 10V, ID = 17.5A VGS = 4.5V, ID = 17.5A 1 0.014 0.016 Min. 30 1 10 100 2.5 0.0195 0.0215 Typ. Max. Unit V A A nA V
Table 4.
Symbol gfs (1) Ciss Coss Crss td(on) tr td(off) tf Qg Qgs Qgd
Dynamic
Parameter Forward transconductance Input capacitance Output capacitance Reverse transfer capacitance Turn-on delay time Rise time Turn-off delay time Fall time Total gate charge Gate-source charge Gate-drain charge Test conditions VDS = 15V, ID = 17.5A Min. Typ. 19 800 250 60 17 100 20 21 12.5 42 5.2 17 Max. Unit S pF pF pF ns ns ns ns nC nC nC
VDS = 25V, f = 1MHz, VGS = 0
VDD = 15V, ID = 17.5A RG = 4.7 VGS = 4.5V (see Figure 12) VDD = 24V, ID = 35A, VGS = 5V, RG = 4.7 (see Figure 13)
1. Pulsed: Pulse duration = 300 s, duty cycle 1.5%.
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STD35NF3LL
Electrical characteristics
Table 5.
Symbol ISD ISDM (1) VSD (2) trr Qrr IRRM
Source drain diode
Parameter Source-drain current Source-drain current (pulsed) Forward on voltage ISD = 35A, VGS = 0 35 44 2.5 Test conditions Min. Typ. Max. 35 140 1.3 Unit A A V ns nC A
Reverse recovery time ISD = 35A, di/dt = 100A/s, Reverse recovery charge VDD = 15V, Tj = 150C Reverse recovery current (see Figure 17)
1. Pulse width limited by safe operating area. 2. Pulsed: Pulse duration = 300 s, duty cycle 1.5%
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Electrical characteristics
STD35NF3LL
2.1
Figure 1.
Electrical characteristics (curves)
Safe operating area Figure 2. Thermal impedance
Figure 3.
Output characteristics
Figure 4.
Transfer characteristics
Figure 5.
Transconductance
Figure 6.
Static drain-source on resistance
6/13
STD35NF3LL Figure 7. Gate charge vs. gate-source voltage Figure 8.
Electrical characteristics Capacitance variations
Figure 9.
Normalized gate threshold voltage vs. temperature
Figure 10. Normalized on resistance vs. temperature
Figure 11. Source-drain diode forward characteristics
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Test circuit
STD35NF3LL
3
Test circuit
Figure 13. Gate charge test circuit
Figure 12. Switching times test circuit for resistive load
Figure 14. Test circuit for inductive load Figure 15. Unclamped Inductive load test switching and diode recovery times circuit
Figure 16. Unclamped inductive waveform
Figure 17. Switching time waveform
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STD35NF3LL
Package mechanical data
4
Package mechanical data
In order to meet environmental requirements, ST offers these devices in ECOPACK(R) packages. These packages have a Lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com
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Package mechanical data
STD35NF3LL
DPAK MECHANICAL DATA
mm. DIM. MIN. A A1 A2 B b4 C C2 D D1 E E1 e e1 H L (L1) L2 L4 R V2 2.2 0.9 0.03 0.64 5.2 0.45 0.48 6 5.1 6.4 4.7 2.28 4.4 9.35 1 2.8 0.8 0.6 0.2 0 8 0 1 0.023 0.008 8 4.6 10.1 0.173 0.368 0.039 0.110 0.031 0.039 6.6 0.252 0.185 0.090 0.181 0.397 TYP MAX. 2.4 1.1 0.23 0.9 5.4 0.6 0.6 6.2 MIN. 0.086 0.035 0.001 0.025 0.204 0.017 0.019 0.236 0.200 0.260 TYP. MAX. 0.094 0.043 0.009 0.035 0.212 0.023 0.023 0.244 inch
0068772-F
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STD35NF3LL
Packing mechanical data
5
Packing mechanical data
DPAK FOOTPRINT
All dimensions are in millimeters
TAPE AND REEL SHIPMENT
REEL MECHANICAL DATA
DIM. A B C D G N T 1.5 12.8 20.2 16.4 50 22.4 18.4 13.2 mm MIN. MAX. 330 0.059 0.504 0.520 0.795 0.645 0.724 1.968 0.881 BULK QTY 2500 inch MIN. MAX. 12.992
TAPE MECHANICAL DATA
DIM. A0 B0 B1 D D1 E F K0 P0 P1 P2 R
W
BASE QTY 2500
mm MIN. 6.8 10.4 1.5 1.5 1.65 7.4 2.55 3.9 7.9 1.9 40
15.7 16.3
inch MIN. MAX. 7 0.267 0.275 0.409 0.417 0.476 0.059 0.063 0.059 0.065 0.073 0.291 0.299 0.100 0.108 0.153 0.161 0.311 0.319 0.075 0.082 1.574
0.618 0.641
MAX. 10.6 12.1 1.6 1.85 7.6 2.75 4.1 8.1 2.1
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Revision history
STD35NF3LL
6
Revision history
Table 6.
Date 21-Jun-2004 06-Jul-2006 14-sep-2006 20-Feb-2007
Revision history
Revision 2 3 4 5 Preliminary version New template, no content change Removed IPAK Typo mistake on page 1 Changes
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STD35NF3LL
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