BD8179MUV-E2 データシートの表示（PDF） - ROHM Semiconductor
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BD8179MUV-E2 Datasheet PDF : 13 Pages
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BD8179MUV
●Pin Assignments Diagram
24 23 22 21 20 19 18 17
FBP 25
DRVP 26
FBN 27
DRVN 28
DEL 29
CTL 30
DRN 31
COM 32
BD8179MUV
16 NEG4
15 POS4
14 SUP
13 OUT3
12 POS3
11 BGND
10 POS2
9 NEG2
1 23 4 56 78
●Block Diagram
VCN
Technical Note
VCP
VIN
IN
STEP-UP
LX
FB
CONTROLLER
COMP
PGND
AGND
SRC
COM
DRN
GATE-ON
CONTROLLER
GATE SHADING
CONTROLLER
DRVP
FBP
DEL
CTL
SUP
NEG1
OUT1 OP－1
POS1 ＋
NEG2
OUT2 OP－2
POS2 ＋
GATE-OFF
CONTROLLER
DRVN
FBN
REF
REF
NEG4
O＋P4 OUT4
－
POS4
OP－3
OUT2 ＋
POS3
＋
OP5
－
BGND
NEG5
OUT5
POS5
VMAIN
VCP
VGON
VCN
VGOFF
●Pin Assignments
PIN Pin
NO. Name
Function
PIN Pin
NO. Name
Function
1 SRC Highside Input for Gate Shading switch
17 OUT4 Operational Amplifier 4 Output
2 REF Reference for VGOFF
18 POS5 Operational Amplifier 5 Noninverting Input
3 AGND Ground
19 NEG5 Operational Amplifier 5 Inverting Input
4 PGND Power Ground
20 OUT5 Operational Amplifier 5 Output
5 OUT1 Operational Amplifier 1 Output
21
LX Nch Power MOS FET Drain and Switching Node
6 NEG1 Operational Amplifier 1 Inverting Input
22
IN Power Supply voltage Input
7 POS1 Operational Amplifier 1 Noninverting Input
23
FB Feedback Input for step up DC/DC
8 OUT2 Operational Amplifier 2 Output
24 COMP Error Amplifier Compensation Point for step up DC/DC
9 NEG2 Operational Amplifier 2 Inverting Input
25 FBP Feedback Input for Gate-ON Linear-Regulator
10 POS2 Operational Amplifier 2 Noninverting Input
26 DRVP Gate-ON Linear-Regulator Base Drive
11 BGND Ground
27 FBN Feedback Input for Gate-OFF Linear-Regulator
12 POS3 Operational Amplifier 3 Noninverting Input
28 DRVN Gate-OFF Linear-Regulator Base Drive
13 OUT3 Operational Amplifier 3 Output
29 DEL Delay Input for Gate Shading
14 SUP Power Supply voltage Input for operational Amplifier 30 CTL Switch Control Input for Gate Shading
15 POS4 Operational Amplifier 4 Noninverting Input
31 DRN Lowside Input for Gate Shading switch
16 NEG4 Operational Amplifier 4 Inverting Input
32 COM Gate Shading Output
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5/12
2009.07 - Rev.B
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