ROHM BD6934FV Technical data
Power Management IC Series for Automotive Body Control
Antenna Driver
BD6934FV
●Description
This 1ch half-bridje pre-driver for 125kHZ drive with a built-in oscillation circuit is equipped the driving current adjustment
function.
●Features
1)Pre-driver for driving MOS-FET
2)4MHz ceramic resonator or external pulse are available
3)Driving current adjustment function (Dependence on power supply voltage)
4)Stand-by current 0μA（typ.）
5)Built-in the resistance between Gate to Source of FET
6)Built-in FET synchro on protect
7)Built-in thermal shutdown
8)Built-in under voltage lockout protection(UVLO)
●Applications
Usable in driving low frequency , the likes of TPMS and smart entry system.
●Absolute Maximum Ratings（Ta=25℃）
Parameter Symbol Rating Unit
Supply voltage Vcc1,Vcc2 12 V
Power dissipation Pd 562 ＊ mW
Operating temperature range T
Storage temperature range T
Junction temperature T
＊Reduced by 4.496mW/℃,when mounted on a glass epoxy board (70mm×70mm×1.6mm)
●Operating range
Supply voltage Vcc1,Vcc2 3.5～8 V
RP,RN voltage Vrp,Vrn VCC2 V
XOUT,RT,CT voltage Vxout,Vrt,Vct VCC1 V
Input voltage VIN -0.3～VCC1 V
*This product described in this specification isn’t judged whether it applies to COCOM regulations.
It should not be exported without authorization from the appropriate government.
*This product is not designed for protection against radioactive rays.
Status of this document
*
The Japanese version of this document is the formal specification.
A customer may use this translation version only for a reference to help reading the formal version.
If there are any differences in translation version of this document, formal version takes priority.
(Ta=25℃)
Parameter Symbol Operating range Unit
-40～85 ℃
opr
-55～150 ℃
stg
150 ℃
jmax
No.09039EBT03
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© 2009 ROHM Co., Ltd. All rights reserved.
1/12
2009.09 - Rev.B
BD6934FV
●Electrical characteristics（Unless otherwise specified, VCC1=VCC2=3.5～8V,Ta=-40～85℃）
Technical Note
Parameter Symbol
［
Circuit current
VCC driv e cu rrent
VCC stand-by current Icc2 - - 10
］
Icc1 - 3.5 7
Min. Typ. Max.
Limit
[Output]
］
V
OHH
OHL
V
OLH
OLL
LH
I
LL
ON
D
ON
ON
T
OSC
V
I
IH
IL
VCC-0.4 VCC-0. 2 - V I o=-5ｍAFig.33
-0.20.4V Io=5
VCC-0.4 VCC-0. 2 - V I o=-5ｍAFig.33
-0.20.4V Io=5
--10μA Vo=0V Fig.32
--10μAVo=12V Fig.32
3.5 6.84 9.17 11. 5 % VCC1=VCC2=3.5V Fig.34
4
13 15 17 % VCC1=VCC2=4V Fig.34
7 44 49 54 % VCC1=VCC2=7V Fi g.34
--8μsec * Fig.34
VCC*0.8 - - V Fig.33
IH
IL
- - 1.3 V Fig.34
10 - 150
--10μAVIN=0V Fig.32
］
2.7 3 3.3 V Fig.31
2.9 3.2 3.5 V Fig.31
0.63 0.7 0.77 V Fig.35
346 432 518
300 430 560
V
UVOFF
V
UVON
RT
CTC
CTD
Upper side output v oltage H
Upper side output v oltage L V
L ower s ide output v oltage H
L ower si de output v oltage L V
Output leak current H I
Output leak current L
ON Duty 3.5V D
ON Duty 4V
ON Duty 7V D
Oscillating st ar t time *
Input（IN,SEL
［
）］
Input voltage H
Input voltage L V
Input current H
Input current L I
［
Under volt age lock out protection
UV LO ON v olt a ge V
UVLO OFF voltage
Trianglar wave generation
［
RT voltage
CT charge curr ent I
CT discharge cur r ent I
Unit
Conditions
Measurem ent
circuit
mA IN=High Fig.31
μ
A IN=Low Fig.32
AFig.33
ｍ
AFig.33
ｍ
μ
A V IN=VCC Fig.31
AVCT
μ
AVCT
μ
1.1V Fig.35
＝
1.1V Fig.35
＝
* Oscillating start time ： Time till operating output, after UVLO turn off during oscillating ceramic resonator.
◎This product is not designed for protection against radioactive rays.
●Dimension
Product No.
D6934
Lot No.
Fig.1 SSOP-B16 （UNIT:mm）
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© 2009 ROHM Co., Ltd. All rights reserved.
2/12
2009.09 - Rev.B
BD6934FV
●Reference Data
5
4
3
2
ICC1[mA]
1
0
036912
VCC1,VCC2[V]
Fig.2 VCC drive current
0.0
-0.3
-0.6
V_OUTN(V)
-0.9
Ta=85℃
Ta=25℃
Ta=-40℃
Ta=-40℃
Ta=25℃
Ta=85℃
4.0
3.0
2.0
ICC2[μA]
1.0
0.0
Ta=-40℃
036912
Ta=25℃
Ta=85℃
VCC1,VCC2[V]
Fig.3 VCC stand-by current
1.2
0.9
0.6
V_OUTN[V]
0.3
Ta=85℃
T=a25℃
Ta=-40℃
Technical Note
0.0
-0.3
-0.6
-0.9
V_OUTN-VCC2[V]
-1.2
V_OUTN[V]
Ta=-40℃
Ta=25℃
Ta=85℃
0 5 10 15 20
I_OUTP[mA]
Fig.4 output voltage H (Vcc3.5V)
1.2
0.9
0.6
0.3
Ta=85℃
Ta=25℃
Ta=-40℃
-1.2
0 5 10 15 20
I_OUTP[mA]
Fig.5 output voltage H (Vcc8V)
4
3
2
I_OUTP[μA]
1
0
036912
Ta=85℃
Ta=25℃
Ta=-40℃
VCC1,VCC2[V]
Fig.8 Output leak current H
OUTP
OUTN
0.0
0 5 10 15 20
I_OUTN[mA]
Fig.6 output voltage L (Vcc3.5V)
4
3
2
I_OUTP[μA]
1
0
036912
Ta=85℃
Ta=25℃
Ta=-40℃
VCC1,VCC2[V]
Fig.9 Output leak current L
OUTP
OUTN
OUTP
OUTN
0.0
0 5 10 15 20
I_OUTN[mA]
Fig.7 output voltage L (Vcc8V)
Fig.10 ON Duty3.5V
0.8
0.6
From Left Ta=-40℃
Ta=25℃
0.4
V_RT[V]
0.2
Ta=85℃
Fig.11 ON Duty4V
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Fig.12 ON Duty7V
3/12
0.0
0.00.71.42.12.83.5
V_IN[V]
Fig.13 Input voltage H / L (Vcc3.5V)
2009.09 - Rev.B
BD6934FV
0.8
0.6
0.4
V_RT[V]
0.2
0.0
0.0 1.0 2.0 3.0 4.0
Fig.14 Input voltage H / L (Vcc4V)
4
3
2
I_IN[μA]
1
0
04812
Fig.17 Input current H
1.0
0.8
0.6
0.4
V_RT[V]
0.2
0.0
036912
From Left Ta=-40℃
Ta=25℃
Ta=85℃
V_IN[V]
Ta=85℃
VCC1,VCC2[V]
Ta=85℃
Ta=25℃
Ta=-40℃
VCC1 ,VCC2[V]
Fig.20 RT voltage
0.8
0.6
From Left Ta=-40℃
Ta=25℃
Ta=85℃
0.4
V_RT[V]
0.2
0.0
0.0 2.0 4.0 6.0
V_IN[V]
Fig.15 Input voltage H / L (Vcc7V)
200
150
Ta=85℃
100
I_IN[μA]
50
0
036912
Ta=25℃
Ta=-40℃
VCC1,VCC2[V]
Fig.18 Input current L
1000
500
I_CT[μA]
-500
-1000
From Left Ta=-40℃
Ta=25℃
Ta=85℃
0
0.00.30.60.91.21.5
V_CT[V]
Fig.21 CT charge-discharge current
Technical Note
0.8
0.6
From Left Ta=-40℃
Ta=25℃
0.4
V_RT[V]
0.2
0.0
0.02.04.06.08.0
Fig.16 Input voltage H / L (Vcc8V)
4.0
3.0
2.0
V_OUTP[V]
1.0
0.0
01234
Fig.19 UVLO ON/OFF voltage
Ta=85℃
V_IN[V]
From Left Ta=85℃
Ta=25℃
Ta=-40℃
VCC1,VCC2[V]
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© 2009 ROHM Co., Ltd. All rights reserved.
4/12
2009.09 - Rev.B
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