IR2108(4) (S) & (PbF)
Lead Definitions
Symbol Description
HIN
Logic input for high side gate driver output (HO), in phase (referenced to COM for IR2108 and
VSS for IR21084)
LIN
Logic input for low side gate driver output (LO), out of phase (referenced to COM for IR2108
and VSS for IR21084)
DT
Programmable dead-time lead, referenced to VSS. (IR21084 only)
VSS
Logic Ground (21084 only)
VB
High side floating supply
HO
High side gate driver output
VS
High side floating supply return
VCC
Low side and logic fixed supply
LO
Low side gate driver output
COM
Low side return
Lead Assignments
1 VCC
2 HIN
3 LIN
4 COM
VB 8
HO 7
VS 6
LO 5
8 Lead PDIP
IR2108
1 VCC
2 HIN
3 LIN
4 COM
VB 8
HO 7
VS 6
LO 5
8 Lead SOIC
IR2108S
1 VCC
2 HIN
3 LIN
4 DT
5 VSS
6 COM
7 LO
14
VB 13
HO 12
VS 11
10
9
8
14 Lead PDIP
IR21084
www.irf.com
1 VCC
2 HIN
3 LIN
4 DT
5 VSS
6 COM
7 LO
14
VB 13
HO 12
VS 11
10
9
8
14 Lead SOIC
IR21084S
5