Si6820DQ
Vishay Siliconix
N-Channel, Reduced Qg, MOSFET with Schottky Diode
MOSFET PRODUCT SUMMARY
VDS (V)
20
rDS(on) (W)
0.160 @ VGS = 4.5 V 0.260 @ VGS = 3.0 V
ID (A)
"1.9 "1.5
SCHOTTKY PRODUCT SUMMARY
VKA (V)
20
VF (v) Diode Forward Voltage
0.5 V @ 1 A
IF (A)
1.5 D K
TSSOP-8
D S S G 1 2 3 4 Top View D 8 K A A A S A G
Si6820DQ
7 6 5
ABSOLUTE MAXIMUM RATINGS (TA = 25_C UNLESS OTHERWISE NOTED)
Parameter
Drain-Source Voltage (MOSFET) Reverse Voltage (Schottky) Gate-Source Voltage (MOSFET) Continuous Drain Current (TJ = 150_C) (MOSFET)a, b Drain Current C) MOSFET) Pulsed Drain Current (MOSFET) Continuous Source Current (MOSFET Diode Conduction)a, b Average Foward Current (Schottky) Pulsed Foward Current (Schottky) Maximum Power Dissipation (MOSFET)a, b Power Dissipation (MOSFET)a, Maximum Power Dissipation (Schottky)a, b Power Dissipation (Schottky)a, Operating Junction and Storage Temperature Range TA = 25_C TA = 70_C TA = 25_C TA = 70_C TJ, Tstg PD TA = 25_C TA = 70_C
Symbol
VDS VKA VGS ID IDM IS IF IFM
Limit
20 20 "12 "1.9 "1.5 "8 1.0 1.5 30 1.2 0.76 1.0 0.64 –55 to 150
Unit
V
A
W
_C
THERMAL RESISTANCE RATINGS
Parameter
Maximum Junction-to-Ambient (t Maximum Junction-to-Ambient (t v 10 sec)a 10 sec)
Device
MOSFET Schottky MOSFET Schottky
Symbol
Typical
Maximum
105 125
Unit
RthJA
Maximum Junction-to-Ambient (t steady state) Maximum Junction-to-Ambient (t = steady state)a
115 130
_C/W
Notes a. Surface Mounted on FR4 Board. b. t v 10 sec. Document Number: 70790 S-56936—Rev. C, 23-Nov-98 www.vishay.com S FaxBack 408-970-5600
2-1
Si6820DQ
Vishay Siliconix
MOSFET SPECIFICATIONS (TJ = 25_C UNLESS OTHERWISE NOTED)
Parameter Static
Gate Threshold Voltage Gate-Body Leakage Zero Gate Voltage Drain Current Gate Voltage Drain Current On-State Drain Currenta Drain-Source On-State Drain Source On State Resistancea Forward Transconductancea Diode Forward Voltagea VGS(th) IGSS IDSS ID(on) rDS( ) DS(on) gfs VSD VDS = VGS, ID = 250 mA VDS = 0 V, VGS = "12 V VDS = 20 V, VGS = 0 V VDS = 20 V, VGS = 0 V, TJ = 55_C VDS w 5 V, VGS = 4.5 V VGS = 4.5 V, ID = 1.9 A VGS = 3.0 V, ID = 1.5 A VDS = 15 V, ID = 1.9 A IS = 1.0 A, VGS = 0 V 6 0.085 0.115 5 0.77 1.2 0.160 0.260 W S V 0.6 "100 1 25 V nA mA A
Symbol
Test Condition
Min
Typ
Max
Unit
Dynamicb
Total Gate Charge Gate-Source Charge Gate-Drain Charge Turn-On Delay Time Rise Time Turn-Off Delay Time Fall Time Source-Drain Reverse Recovery Time Qg Qgs Qgd td(on) tr td(off) tf trr IF = 1.0 A, di/dt = 100 A/ms VDD = 3.5 V, RL = 11.5 W 5 V, 11 5 ID ^ 0.3 A, VGEN = 4.5 V RG = 6 W 3A 5 V, VDS = 3.5 V, VGS = 4.5 V, ID = 0.3 A 5V 5V 3 2.1 0.43 0.30 8 10 12 6 31 20 20 25 15 60 ns 3.5 nC C
Notes a. Pulse test; pulse width v 300 ms, duty cycle v 2%. b. Guaranteed by design, not subject to production testing.
SCHOTTKY SPECIFICATIONS (TJ = 25_C UNLESS OTHERWISE NOTED)
Parameter
Forward Voltage Drop Voltage Drop
Symbol
VF
Test Condition
IF = 1 A IF = 1 A, TJ = 125_C Vr = 20 V
Min
Typ
0.45 0.36 0.003 0.1 2 62
Max
0.50
Unit
V
0.42 0.100 1 10 pF mA A
Maximum R Reverse Leakage Current Mi Lk C
Irm
Vr = 20 V, TJ = 75_C Vr = 20 V, TJ = 125_C
Junction Capacitance
CT
Vr = 10 V
www.vishay.com S FaxBack 408-970-5600
2-2
Document Number: 70790 S-56936—Rev. C, 23-Nov-98
Si6820DQ
Vishay Siliconix
TYPICAL CHARACTERISTICS (25_C UNLESS NOTED)
Output Characteristics
10 3V 8 I D – Drain Current (A) VGS = 5 thru 3,5 V 2.5 V 6 I D – Drain Current (A) 8 10
MOSFET
Transfer Characteristics
6
4
4 TC = 125_C 2 25_C 0 –55_C 1.5 2.0 2.5 3.0 3.5
2
2V 1.5 V
0 0 2 4 6 8
0
0.5
1.0
VDS – Drain-to-Source Voltage (V)
VGS – Gate-to-Source Voltage (V)
On-Resistance vs. Drain Current
0.20 500
Capacitance
r DS(on) – On-Resistance ( W )
0.16 C – Capacitance (pF) VGS = 3.0 V 0.12 VGS = 4.5 V 0.08
400 Ciss 300 Coss 200
0.04
100
Crss
0 0 2 4 ID – Drain Current (A) 6 8
0 0 4 8 12 16 20
VDS – Drain-to-Source Voltage (V)
5 V GS – Gate-to-Source Voltage (V) VDS = 3.5 V ID = 0.3 A
Gate Charge
2.0
On-Resistance vs. Junction Temperature
VGS = 4.5 V ID = 1.9 A
4
r DS(on) – On-Resistance ( W ) (Normalized) 1.0 1.5 2.0 2.5
1.6
3
1.2
2
0.8
1
0 0 0.5
0.4 –50
–25
0
25
50
75
100
125
150
Qg – Total Gate Charge (nC)
TJ – Junction Temperature (_C)
Document Number: 70790 S-56936—Rev. C, 23-Nov-98
www.vishay.com S FaxBack 408-970-5600
2-3
Si6820DQ
Vishay Siliconix
TYPICAL CHARACTERISTICS (25_C UNLESS NOTED)
Source-Drain Diode Forward Voltage
10 0.4
MOSFET
On-Resistance vs. Gate-to-Source Voltage
r DS(on) – On-Resistance ( W )
I S – Source Current (A)
0.3
TJ = 150_C TJ = 25_C
0.2 ID = 1.9 A 0.1
1 0.2 0.4 0.6 0.8 1.0 1.8
0 0 1 2 3 4 5 6
VSD – Source-to-Drain Voltage (V)
VGS – Gate-to-Source Voltage (V)
Threshold Voltage
0.50 ID = 250 mA 0.25 V GS(th) Variance (V) 20 Power (W) 30 25
Single Pulse Power
0.00
15
10 –0.25 5
–0.5 –50
0 –25 0 25 50 75 100 125 150 0.01 0.1 Time (sec) 1 10 30 TJ – Temperature (_C)
Normalized Thermal Transient Impedance, Junction-to-Ambient
2 1 Normalized Effective Transient Thermal Impedance Duty Cycle = 0.5
0.2
Notes:
0.1 0.1 0.05 0.02
PDM t1 t2 1. Duty Cycle, D = t1 t2 2. Per Unit Base = RthJA = 115_C/W 3. TJM – TA = PDMZthJA(t)
Single Pulse 0.01 10–4 10–3 10–2 10–1
4. Surface Mounted
1
10
30
Square Wave Pulse Duration (sec) www.vishay.com S FaxBack 408-970-5600
2-4
Document Number: 70790 S-56936—Rev. C, 23-Nov-98
Si6820DQ
Vishay Siliconix
TYPICAL CHARACTERISTICS (25_C UNLESS NOTED)
Reverse Current vs. Junction Temperature
20 10 I R – Reverse Current (mA) 3
SCHOTTKY
Forward Voltage Drop
I F – Forward Current (A)
1
1 TJ = 150_C
0.1
20 V 10 V
0.01
0.1
TJ = 25_C
0.001
0.0001 0 25 50 75 100 125 150 TJ – Junction Temperature (_C)
0.01 0 0.1 0.2 0.3 0.4 0.5 0.6
VF – Forward Voltage Drop (V)
250
Capacitance
CT – Junction Capacitance (pF)
200
150 Ciss 100
50
0 0 4 8 12 16 20
VKA – Reverse Voltage (V)
Normalized Thermal Transient Impedance, Junction-to-Ambient
2 1 Duty Cycle = 0.5 Normalized Effective Transient Thermal Impedance
0.2
Notes: PDM
0.1
0.1
t1
0.05 0.02 Single Pulse 0.01 10–4 10–3 10–2 10–1 1
t2 1. Duty Cycle, D =
2. Per Unit Base = RthJA = 130_C/W 3. TJM – TA = PDMZthJA(t) 4. Surface Mounted
t1 t2
10
30
Square Wave Pulse Duration (sec)
Document Number: 70790 S-56936—Rev. C, 23-Nov-98
www.vishay.com S FaxBack 408-970-5600
2-5
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