BD9855MWV Datasheet, PDF (2/5 Pages) Rohm – Silicon Monolithic Integrated Circuit

2/4
○Electrical Characteristics（Ta=25℃，VCC=PVCC=6V, RT=82kohm, CTL1～4=3V with no designation）
Parameter
【Internal Regulator】
Regulator Output voltage for Boost terminal
Regulator Output Voltage for inside standard
【Under Voltage Lock Function】
Threshold Voltage１,2
Hysterisis voltage width
【Short Circuit Protection】
Timer Start Threshold Voltage
SCP Out Source Voltage
SCP Threshold Voltage
Stand by Voltage
【Oscillator】
Frequency CH1～3
Frequency CH4
Max duty 1,2(Step Down)
Max duty CH3 Lx31
Max duty CH3 Lx32
Max duty 4
RTSS Pin Standby Voltage
RTSS Pin smk Current
RTSS Pin source Current
【Error AMP】
Input Bias Current
INV Threshold Voltage 1
NON_INVoffset Voltage
【Reference Voltage VREF】
VREF　Output Voltage
Line Regulation
Load Regulation
Output Current when shorted
【Soft Start】
SS1,2,3,4　source current
SS Discharge Resistance
【Output Driver】
CH1,2 Highside SW ON Resistance
CH1,2 Highside SW ON Resistance
CH3 Driver Output Voltage H
CH3 Driver Output Voltage L
CH3 Lx31Pin Lowside SW ON Resistance
CH3 Lx32Pin Highside SW ON Resistance
CH3 Lx32Pin Lowside SW ON Resistance
CH4 Driver Output Voltage H
CH4 Driver Output Voltage L
【PG Output Pin】
PG Pin ON Resistance
PG Pin Leak Current
【Control terminal】
CTL terminal voltage(ON),
CTL terminal voltage (OFF),
SEL terminal voltage (? frequency)
SEL terminal voltage (same frequency)
CTL,SEL Pull down Resistance
【Circuit Current】
STAND-by Current
Circuit Current（VCC,PVCC Pin Input Current）
Circuit Current（Application Io=none）
Symbol
VREG
VREGA
Vstd1,2
Vhys1,2
Vtc
Iscp1
Vtsc
Vssc
fosc123
Fosc4
Dmax1,2
Dmax31
Dmax32
Dmax4
RTSSF
IRTSSI
IRTSSO
IINV
VINV1
Voff
VOREF
DVLi
DVLo
Ios
Iss
RdisSS
RON12p
RON12N
Vout3H
Vout3L
RON31N
RON32p
RON32N
Vout4H
Vout4L
RonPG
IlkPG
VCTLH
VCTLL
VSELH
VSELL
RCTL,RSEL
ISTB
Icc
Iccapl
Standard value
MIN
TYP
MAX
4.8
5
5.2
2.4
2.5
2.6
3.4
3.6
3.8
－
0.1
0.2
2.1
2.2
2.3
2.5
5
7.5
0.45
0.5
0.55
－
10
100
0.8
1
1.2
0.4
0.5
0.6
-
-
100
-
-
100
78
84
90
86
92
96
-
1
20
-7
-5
-3
3
5
7
-
30
100
0.79
0.8
0.81
-
-
5
0.99
1
1.01
-
1
7.5
-
1
7.5
2
10
-
1
2
3
-
500
1000
-
200
350
-
150
300
PVCC-1.0
PVCC -0.5
-
-
0.5
1
-
250
400
-
200
350
-
150
300
PVCC-1.0
PVCC -0.5
-
-
0.5
1
-
0.5
1
-
0
1
2
--
Vcc
-0.3
-
0.8
2
-
7
-0.3
-
0.8
250
400
700
-
0
5
-
4
8
-
25
35
Units
Conditions
V ^Ireg=1mA
V ^Ireg=1mA
V VCCMonitor,VREGMonitor
V VCC cancel ,VREG cancel
V FB Pin Monitor
μA VSCP=0.1V
V
mV
MHz RT=82kΩ、SEL=GND
MHz RT=82kΩ、SEL=VREGA
% Vscp=0V ※
%
%
% SEL=VREGA
mV CTL1～4=0V
μA
μA
nA INV1～4, NON4=0V
V CH1～3
mV NON4=1V, INV4=FB4
V
mV VCC=4.8～8.4V
mV Iref=10μA～100μA
mA Vref=0V
μA VSCP=0.1V
Ω Vss=0.2V
mΩ ILX=50mA
mΩ ILX=-50mA
V _IOUT3=50mA
V _IOUT3=-50mA
mΩ ILX=-50mA
mΩ _{Vo3=6.0V, ILX=50mA}
mΩ ILX=-50mA
V _{IOUT4=50mA,INV4=1.1V}
V _{IOUT4=-50mA,INV4=0.9V}
kΩ _PG=1V
uA _PG=15V
V
V
V
V
kΩ
μA CTL1～4=0V
mA INV=2.5V,NON=1V
mA All CH ON
Test
circuit
※The protective circuit start working when circuit is operated by 100% duty. So it is possible to use only for transition time shorter than charge
time for SCP.
◎This product is not designed for normal operation with in a radioactive environment.
REV. C