Rainbow Electronics BD6111FV User Manual
Variable output, negative voltage IC
BD6111FV
99W028A
Description
Dimension(Units:mm)
The BD6111FV is a charge-pump, negative supply IC
containing a regulator. The charge pump block inverts
a positive power supply voltage that is inputted to
VBAT pin into a negative voltage and outputs it from
the NEGOUT pin. The regulator block stabilizes this
negative voltage with low-noise and outputs it from
OUT pin. Output voltage values of this regulator can
be controlled by voltage value inputted to VIN pin and
determined by OUT=-1.6 VIN .
Features
1) Highly efficient, built-in inverting charge pump
2) Built-in variable, negative voltage linear regulator.
3) Built-in stand-by switch circuit (pull down resistor 1M Ω)
4) Compact SSOP-B8 package
Applications
Compact information computer terminal, such as PDC, PHS and PDA.
Battery driving apparatus requiring negative voltage.
SSOP-B8
Absolute Maximum Ratings (Ta=25˚C)
Parameter
Maximum applied power supply voltage
Maximum applied input voltage
Power dissipation
Operating temperature range
Storage temperature
*Derating:3.0mW/˚C for operation above Ta=25˚C.
Symbol Limits
-0.3
-0.3
-20
-55
~
~
~
~
V
BAT
V
IN
Pd
Topr
Tstg
+6.0
+6.0
*
+70
+125
Unit
V
V
mW300
˚C
˚C
December, 1999
Recommended Operating Conditions (Ta=25˚C)
Parameter Symbol UnitMin. Typ. Max.
Power supply voltage
V
BAT
-
V2.5 5.5
Electrical characteristics
Circuit current
Stand-by current
<Regulator block>
Output voltage
Output ripple voltage
Maximum output current
Load stability
Input stability
VIN pin inflow current
<Charge pump block>
Oscillation frequency
Voltage conversion efficiency
Stand-by pin pull down resistor
Stand-by pin
Control voltage
Operation
Non-operation
Application circuit
(Unless otherwise noted: Ta=25˚C, V
I
Q1
I
Q2
Vo
RR
V
IoMAX
VOL
VOI
IIN
fosc
CE
V
RSTBY
VIH
VIL
-
-
-2.1
-
20
-
-
-
-
-
2.0
-0.3
0.6
-
-2.0
-70
--
2
5
0
120
97
1.00.6
-
-
3
5
-1.9
-60
40
40
2
-
-
1.6
-
0.3
BAT=3.6V, STBY=3.6V)
mA
No-load, V
µA
No-load, V
V
V
IN=1.25V, IOUT=10mA
dBV
mA
mV
mV
µA
kHz
%
MΩ
V
V
IN=1.25V, IOUT=10mA
V
IN=1.25V, VOUT Vo+0.1V
V
V
IN=1.25V, Io=0~10mA
V
IN=1.25V
No-load, NEGOUT monitor
ConditionsParameter Symbol UnitMin. Typ. Max.
IN=1.25V
IN=0V, STBY=0V
C1
1µ
NEGOUT
C2
1µ
C+
GND
C-
VBAT
1
CHARGE
PUMP
2
8
C4
1µ
STBY
7
1M
OUT
3
1.6M
4
+
-
1M
BD6111FV
6
C3
1µ
VIN
5
+
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