BD6112FVM Datasheet PDF - Rohm

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BD6112FVM
Rohm

Part Number BD6112FVM
Description Programmable negative supply IC
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00W148A
Programmable negative supply IC
BD6112FVM
Description
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.
Features
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 1M)
4) Ultra small MSOP8 package
Dimension (Units : mm)
2.9±0.1
8765
0.475 1 2 3 4
0.145
+0.05
-0.03
0.65
0.22 +0.05
-0.04
0.08 S
0.08 M
MSOP8
Applications
Small terminal devics such as cellular phones, PHS, and PDA etc.
Other equipments driven by battery required for negative voltage.
Absolute Maximum Ratings (Ta=25˚C)
Parameter
Symbol
Maximum applied supply voltage VBAT
Maximum applied input voltage
Power dissipation
Operating temperature range
Storage temperature range
*Derating : 3.5mW/˚C for operation above Ta=25˚C
VIN
Pd
Topr
Tstg
Limits
–0.3 ~ +6.0
–0.3 ~ +6.0
350 *
–30 ~ +85
–55 ~ +125
Unit
V
V
mW
˚C
˚C
February, 2001



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Recommended Operating Conditions (Ta=25˚C)
Parameter
Symbol Min.
Power supply voltage
VBAT
2.5
Typ.
3.6
Max.
5.5
Unit
V
Electrical characteristics (Unless otherwise noted; Ta=25˚C, VBAT=3.6V, STBY=3.6V)
Parameter
Symbol Min. Typ. Max. Unit
Conditions
Circuit current
IQ1 – 0.5 3 mA No load, VIN=1.25V
Stand-by current
<Regulator block>
IQ2 –
5 µA No load, VIN=0V, STBY=0V
Output voltage 1
Vo –2.1 –2.0 –1.9 V VIN=1.25V, IOUT=5mA
Output voltage 2
Output ripple voltage
Vo2 Vo x 0.95 Vo Vo x 1.05 V
VRR – –70 –60 dBV
VIN=0.5~1.8V, Vo=–1.6 x VIN,IOUT=5mA
VIN=1.25V, IOUT=5mA
Maximum output current
Load regulation
Line regulation
VIN pin inflow current
<Charge-pump block>
IOMAX
10
– mA VIN=1.25V, VOUTVo+0.1V
VOL
2 40 mV VIN=1.25V, Io=0~5mA
VOI
10 40 mV VBAT=3.0~6.0V, Io=5mA
IIN – 0 2 µA VIN=1.25V
Oscillation frequency
fosc – 120 – kHz
Voltage conversion efficiency VCE
97 –
% No load, NEGOUT monitor
Stand-by pin pull down resistance RSTBY
0.6
1.0
1.6 M
Stand-by pin Operating
control voltage Non-operating
VIH
VIL
2.0
–0.3
–V
0.3 V
Application Circuit
C+
1
C1 + GND
1µ
2
C-
3
NEGOUT
C2
1µ +
4
CHARGE
PUMP
8 VBAT
1µ
+
C4
7 STBY
1.6M
1M
6 OUT
1µ + C3
+-
+
1M
5 VIN
BD6112FVM



BD6112FVM datasheet pdf
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BD6112FVM Programmable negative supply IC BD6112FVM
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BD6112FVM pdf

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