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
