Programmable negative supply IC
BD6112FVM
Description Dimension (Units : mm)
Features
Applications
BD6112FVM is a charge-pump negative supply IC
with a built-in regulator. The charge-pump block
inverts the positive supply voltage in the VBAT pin
into a negative voltage, which generates from the
NEGOUT pin. The regulator block stabilizes
this negative voltage with low-noise that produces
from the OUT pin. Output voltage values of this
regulator can be controlled by voltage value inputted
to the VIN pin and determined by OUT=—1.6 x VIN.
00W148A
1) Built-in high efficiency, inverting charge-pump
2) Built-in negative voltage regulator
(low noise, output voltage variable)
3) Built-in standby SW (pull down resistance 1MΩ)
4) Ultra small MSOP8 package
Small terminal devics such as cellular phones, PHS, and PDA etc.
Other equipments driven by battery required for negative voltage.
February, 2001
Absolute Maximum Ratings (Ta=25˚C)
Maximum applied supply voltage
Maximum applied input voltage
Power dissipation
Operating temperature range
Parameter Symbol Limits Unit
*Derating : 3.5mW/˚C for operation above Ta=25˚C
VBAT
VIN
Pd
Topr
~
~
+85–30
350
~
V
mW
˚C
Storage temperature range Tstg +125–55
~˚C
V
*
–0.3 +6.0
–0.3 +6.0
MSOP8
41 2 3
58 7 6
2.9±0.1
0.475
0.22
0.65
4.0±0.2
0.6±0.2
0.29±0.15
2.8±0.1
0.75±0.05
0.08±0.05
0.9Max.
0.08 S
+0.05
-
0.04
0.145
+0.05
-
0.03
0.08 M
Power supply voltage
Recommended Operating Conditions (Ta=25˚C)
Parameter Min. Max. UnitTyp.Symbol
Circuit current
<Regulator block>
Output voltage 1
Output voltage 2
Output ripple voltage
Maximum output current
Load regulation
Line regulation
VIN pin inflow current
<Charge-pump block>
Oscillation frequency
Voltage conversion efficiency
Stand-by pin pull down resistance
Stand-by pin
control voltage
Electrical characteristics (Unless otherwise noted; Ta=25˚C, VBAT=3.6V, STBY=3.6V)
IQ1 –
–
–2.1
Vo x 0.95
–
10
–
–
–
0.5
–
–2.0
Vo
–70
–
2
10
0
3
5
–1.9
Vo x 1.05
–60
–
40
40
2
mA
µA
V
V
dBV
mA
mV
mV
µA
IQ2
Vo
Vo2
VRR
IOMAX
∆VOL
∆VOI
IIN
No load, VIN=1.25V
No load, VIN=0V, STBY=0V
VIN=1.25V, IOUT=5mA
VIN=0.5~1.8V, Vo=–1.6 x VIN,IOUT=5mA
VIN=1.25V, IOUT=5mA
VIN=1.25V, VOUT≤Vo+0.1V
VIN=1.25V, Io=0~5mA
VBAT=3.0~6.0V, Io=5mA
VIN=1.25V
–
–
0.6
2.0
–0.3
120
97
1.0
–
–
–
–
1.6
–
0.3
kHz
%
MΩ
V
V
fosc
VCE
RSTBY
VIH
VIL
No load, NEGOUT monitor
Symbol Min. Max. Unit ConditionsTyp.Parameter
Operating
Stand-by current
VBAT
V5.53.62.5
Application Circuit
8
6
5
1
2
3
4
CHARGE
PUMP
7STBY
+
+
+
VBAT
C4
1µ
+
OUT
C3
1µ
VIN
1M
1M
1.6M
+
+ -
GND
C-
C+
C1
1µ
C2
1
µ
NEGOUT
BD6112FVM
Non-operating
Appendix
Appendix1-Rev1.0
The products listed in this document are designed to be used with ordinary electronic equipment or devices
(such as audio visual equipment, office-automation equipment, communications devices, electrical
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level of
reliability and the malfunction of with would directly endanger human life (such as medical instruments,
transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other
safety devices), please be sure to consult with our sales representative in advance.
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any
means without prior permission of ROHM CO.,LTD.
The contents described herein are subject to change without notice. The specifications for the
product described in this document are for reference only. Upon actual use, therefore, please request
that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM
CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any
third party's intellectual property rights or other proprietary rights, and further, assumes no liability of
whatsoever nature in the event of any such infringement, or arising from or connected with or related
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ROHM CO., LTD. is granted to any such buyer.
Products listed in this document use silicon as a basic material.
Products listed in this document are no antiradiation design.
About Export Control Order in Japan
Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control
Order in Japan.
In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause)
on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
