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 SI7942DP
Vishay Siliconix
Dual N-Channel 100-V (D-S) MOSFET
FEATURES PRODUCT SUMMARY
VDS (V)
100
rDS(on) (W)
0.049 @ VGS = 10 V 0.060 @ VGS = 6 V
ID (A)
5.9 5.5
D TrenchFETr Power MOSFET D New Low Thermal Resistance PowerPAKr D Dual MOSFET for Space Savings
Package
APPLICATIONS
D Synchronous Buck Shoot-Through Resistant D Optimized for Primary Side Switch
PowerPAK SO-8
D1
D2
6.15 mm
S1
1 2
G1 S2
5.15 mm
3 4
G2
D1
8 7
G1
D1 D2
G2
6 5
D2
Bottom View Ordering Information: SI7942DP-T1
S1 N-Channel MOSFET
S2 N-Channel MOSFET
ABSOLUTE MAXIMUM RATINGS (TA = 25_C UNLESS OTHERWISE NOTED)
Parameter
Drain-Source Voltage Gate-Source Voltage Continuous Drain Current (TJ = 150_C)a Pulsed Drain Current Continuous Source Current (Diode Single Avalanche Current Single Avalanche Energy Maximum Power Dissipationa Operating Junction and Storage Temperature Range TA = 25_C TA = 70_C Conduction)a L = 0.1 mH TA = 25_C TA = 70_C
Symbol
VDS VGS ID IDM IS IAS EAS PD TJ, Tstg
10 secs
100 "20 5.9 4.7 20 2.9 20 20 3.5 2.2
Steady State
Unit
V
3.8 3.0 A 1.2
mJ 1.4 0.9 W _C
-55 to 150
THERMAL RESISTANCE RATINGS
Parameter
Maximum J Mi Junction-to-Ambienta ti t A bi t Maximum Junction-to-Case (Drain) Notes a. Surface Mounted on 1" x 1" FR4 Board. Document Number: 72118 S-03373--Rev. A, 03-Mar-03 www.vishay.com t v 10 sec Steady State Steady State
Symbol
RthJA RthJC
Typical
26 60 2.2
Maximum
35 85 2.7
Unit
_C/W C/W
1
SI7942DP
Vishay Siliconix
SPECIFICATIONS (TJ = 25_C UNLESS OTHERWISE NOTED)
Parameter Static
Gate Threshold Voltage Gate-Body Leakage Zero Gate Voltage Drain Current On-State Drain Currenta Drain-Source On-State Resistancea Forward Transconductancea Diode Forward Voltagea VGS(th) IGSS IDSS ID(on) rDS(on) gfs VSD VDS = VGS, ID = 250 mA VDS = 0 V, VGS = "20 V VDS = 80 V, VGS = 0 V VDS = 80 V, VGS = 0 V, TJ = 55_C VDS w 5 V, VGS = 10 V VGS = 10 V, ID = 5.9 A VGS = 6 V, ID = 5.5 A VDS = 15 V, ID = 5.9 A IS = 2.9 A, VGS = 0 V 20 0.041 0.048 14 0.77 1.2 0.049 0.060 2 4.0 "100 1 5 V nA mA A W S V
Symbol
Test Condition
Min
Typ
Max
Unit
Dynamicb
Total Gate Charge Gate-Source Charge Gate-Drain Charge Gate Resostamce Turn-On Delay Time Rise Time Turn-Off Delay Time Fall Time Source-Drain Reverse Recovery Time Qg Qgs Qgd Rg td(on) tr td(off) tf trr IF = 2.9 A, di/dt = 100 A/ms VDD = 50 V, RL = 50 W ID ^ 1 A, VGEN = 10 V, RG = 6 W VDS =50 V, VGS = 10 V, ID = 5.9 A 16 3.8 5.5 2.2 15 15 35 20 50 25 25 55 30 75 ns W 24 nC
Notes a. Pulse test; pulse width v 300 ms, duty cycle v 2%. b. Guaranteed by design, not subject to production testing.
TYPICAL CHARACTERISTICS (25_C UNLESS NOTED)
Output Characteristics
20 VGS = 10 thru 6 V 16 5V I D - Drain Current (A) 12 I D - Drain Current (A) 12 16 20
Transfer Characteristics
8
8 TC = 125_C 4 25_C -55_C 0
4 3V 0 0 1 2 3 4 5 VDS - Drain-to-Source Voltage (V) 4V
0
1
2
3
4
5
6
VGS - Gate-to-Source Voltage (V) Document Number: 72118 S-03373--Rev. A, 03-Mar-03
www.vishay.com
2
SI7942DP
Vishay Siliconix
TYPICAL CHARACTERISTICS (25_C UNLESS NOTED)
0.08 r DS(on) - On-Resistance ( W )
On-Resistance vs. Drain Current
1500
Capacitance
0.06
VGS = 6 V
C - Capacitance (pF)
1200 Ciss
900
0.04
VGS = 10 V
600
0.02
300
Coss
Crss
0.00 0 4 8 12 16 20
0 0 10 20 30 40 50 60 70 80
ID - Drain Current (A)
VDS - Drain-to-Source Voltage (V)
Gate Charge
10 V GS - Gate-to-Source Voltage (V) VDS = 50 V ID = 5.9 A 8 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0 0 4 8 12 16 20 Qg - Total Gate Charge (nC) 0.6 -50
On-Resistance vs. Junction Temperature
VGS = 10 V ID = 5.9 A
6
4
2
r DS(on) - On-Resistance ( W) (Normalized)
-25
0
25
50
75
100
125
150
TJ - Junction Temperature (_C)
Source-Drain Diode Forward Voltage
40 0.12 0.10 0.08
On-Resistance vs. Gate-to-Source Voltage
TJ = 150_C 10
r DS(on) - On-Resistance ( W )
I S - Source Current (A)
ID = 5.9 A ID = 1 A
0.06 0.04 0.02 0.00
TJ = 25_C
1 0.0
0.2
0.4
0.6
0.8
1.0
1.2
0
2
4
6
8
10
VSD - Source-to-Drain Voltage (V)
VGS - Gate-to-Source Voltage (V)
Document Number: 72118 S-03373--Rev. A, 03-Mar-03
www.vishay.com
3
SI7942DP
Vishay Siliconix
TYPICAL CHARACTERISTICS (25_C UNLESS NOTED)
Threshold Voltage
0.8 100
Single Pulse Power
0.4 V GS(th) Variance (V)
80 ID = 250 mA Power (W) 60
0.0
-0.4
40
-0.8
20
-1.2 -50
-25
0
25
50
75
100
125
150
0 0.001
0.01
0.1
1 Time (sec)
10
100
600
TJ - Temperature (_C)
100
Safe Operating Area, Junction-To-Ambient
rDS(on) Limited IDM Limited
10 I D - Drain Current (A) P(t) = 0.0001 1 P(t) = 0.001 ID(on) Limited TA = 25_C Single Pulse P(t) = 0.01 P(t) = 0.1 0.1 P(t) = 1 P(t) = 10 0.01 0.1 1 BVDSS Limited 10 VDS - Drain-to-Source Voltage (V) dc 100
Normalized Thermal Transient Impedance, Junction-to-Ambient
2 1
Normalized Effective Transient Thermal Impedance
Duty Cycle = 0.5
0.2 0.1 0.1 0.05 0.02 Single Pulse 0.01 10 - 4 10 - 3 10 - 2 10 - 1 1 Square Wave Pulse Duration (sec)
Notes: PDM t1
t2 1. Duty Cycle, D =
2. Per Unit Base = RthJA = 60_C/W 3. TJM - TA = PDMZthJA(t) 4. Surface Mounted
t1 t2
10
100
600
www.vishay.com
4
Document Number: 72118 S-03373--Rev. A, 03-Mar-03
SI7942DP
Vishay Siliconix
TYPICAL CHARACTERISTICS (25_C UNLESS NOTED)
Normalized Thermal Transient Impedance, Junction-to-Case
2 1 Duty Cycle = 0.5 0.2 0.1 0.1 0.05 0.02 Single Pulse
Normalized Effective Transient Thermal Impedance
0.01
10 - 4
10 - 3
10 - 2 Square Wave Pulse Duration (sec)
10 - 1
1
Document Number: 72118 S-03373--Rev. A, 03-Mar-03
www.vishay.com
5
Legal Disclaimer Notice
Vishay
Notice
Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc., or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. Information contained herein is intended to provide a product description only. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications. Customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Vishay for any damages resulting from such improper use or sale.
Document Number: 91000 Revision: 08-Apr-05
www.vishay.com 1


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