Si6821DQ
New Product
Vishay Siliconix
P-Channel, Reduced Qg, MOSFET with Schottky Diode
MOSFET PRODUCT SUMMARY
VDS (V)
–20
rDS(on) (W)
0.190 @ VGS = –4.5 V 0.280 @ VGS = –3.0 V
ID (A)
"1.7 "1.3
SCHOTTKY PRODUCT SUMMARY
VKA (V)
20
VF (V) Diode Forward Voltage
0.5 V @ 1 A
IF (A)
1.5 S K
TSSOP-8
D S S G 1 2 3 4 Top View D 8 K A A A D A G
Si6821DQ
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 "1.7 "1.3 "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: 70791 S-56954—Rev. C, 01-Mar-99 www.vishay.com S FaxBack 408-970-5600
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Si6821DQ
Vishay Siliconix
New Product
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 = –1.7 A VGS = –3.0 V, ID = –1.3 A VDS = –10 V, ID = –1.7 A IS = –1 A, VGS = 0 V –6 0.135 0.200 4.0 –0.77 –1.2 0.190 0.280 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 A, di/dt = 100 A/ms VDD = –3 5 V, RL = 11.5 W 3.5 V, 11 5 ID ^ –1 A, VGEN = –4 5 V RG = 6 W A 4.5 V, VDS = –3.5 V, VGS = –4 5 V ID = –0 3 A 35V 4.5 V, 0.3 3.5 0.85 0.60 7 10 11 7 35 15 20 20 15 60 ns 7.0 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
0.5
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
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Document Number: 70791 S-56954—Rev. C, 01-Mar-99
Si6821DQ
New Product
TYPICAL CHARACTERISTICS (25_C UNLESS NOTED)
Output Characteristics
10 4.5 V 8 I D – Drain Current (A) I D – Drain Current (A) 4V 3.5 V 8 25_C 125_C 10 TC = –55_C
Vishay Siliconix
MOSFET
Transfer Characteristics
6 3V 4 2.5 V 2 1.5 V 0 0 2 4 6 8 2V
6
4
2
0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
VDS – Drain-to-Source Voltage (V)
VGS – Gate-to-Source Voltage (V)
On-Resistance vs. Drain Current
0.5 600
Capacitance
r DS(on) – On-Resistance ( W )
0.4 C – Capacitance (pF)
500 Ciss 400
0.3 VGS = 3.0 V 0.2 VGS = 4.5 V 0.1
300
Coss
200 Crss
100
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 = 1.7 A
4
r DS(on) – On-Resistance ( W ) (Normalized) 1.5 2.0 2.5 3.0 3.5 4.0
1.6
3
1.2
2
0.8
1
0 0 0.5 1.0
0.4 –50
–25
0
25
50
75
100
125
150
Qg – Total Gate Charge (nC) Document Number: 70791 S-56954—Rev. C, 01-Mar-99
TJ – Junction Temperature (_C) www.vishay.com S FaxBack 408-970-5600
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Si6821DQ
Vishay Siliconix
New Product
MOSFET
On-Resistance vs. Gate-to-Source Voltage
0.8
TYPICAL CHARACTERISTICS (25_C UNLESS NOTED)
Source-Drain Diode Forward Voltage
10
r DS(on) – On-Resistance ( W )
I S – Source Current (A)
0.6
TJ = 150_C TJ = 25_C
0.4 ID = 1.7 A 0.2
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)
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Document Number: 70791 S-56954—Rev. C, 01-Mar-99
Si6821DQ
New Product
Vishay Siliconix
SCHOTTKY
Forward Voltage Drop
3
TYPICAL CHARACTERISTICS (25_C UNLESS NOTED)
Reverse Current vs. Junction Temperature
20 10 I R – Reverse Current (mA)
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 =
t1 t2 2. Per Unit Base = RthJA = 130_C/W 3. TJM – TA = PDMZthJA(t) 4. Surface Mounted
10
30
Square Wave Pulse Duration (sec)
Document Number: 70791 S-56954—Rev. C, 01-Mar-99
www.vishay.com S FaxBack 408-970-5600
2-5
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