bd9757mwv ROHM Co. Ltd., bd9757mwv Datasheet - Page 2

• Manufacturer Part Number: bd9757mwv
• Description: 8-channel Switching Regulator Controller For Digital Camera
• Manufacturer: ROHM Co. Ltd.

○Electrical characteristics （Ta=25℃, VCCOUT=5.0V, VBAT=3V, STB13～7=3V,UPIC8=2.5V）
(※1)The protective circuit start working when circuit is operated by 100% duty.
(※2)Recommend resistor value over 20kΩ between VREF to NON6, because VREF current is under 100uA.
◎This product is not designed for normal operation with in a radioactive environment
So it is possible to use only for transition time shorter than charge time for SCP.
【Internal Regulator VREGA】
Output
Voltage
【Prevention Circuit of Miss Operation by Low voltage Input】
Threshold
Voltage
Hysteresis
Width1
Threshold
Voltage 2
Hysteresis
Width
【Short Circuit Protection】
SCP detect
time
Timer
threshold
voltage
【Start-up Circuit】
Frequency
Start-up
VBAT
Voltage
Start-up CH
Soft Start
Time
【Oscillator】
Frequency
CH1～5
Frequency
CH6～8
Max duty
2,3,4,5
（step-down）
Max duty 1
（step-up）
Max duty
6,7,8
【Error Amp】
Input
current
INV threshold
1
INV threshold
2
INV threshold
3 (max)
【For Inverting Base Bias Voltage Vref】
CH6 Output
Voltage
Line
Regulation
Output
Current When
Shorted
【Soft Start】
CH2,5 Soft
Start Time
CH3,4 Soft
Start Time
CH6 Soft
Start Time
CH7,8 Soft
Start Time
Parameter
start
Bias
Fstart
Vst1
Tss1
Dmax1d
Dmax1u
Dmax2
VINV1
VINV2
VINV3
Tss2,5
Tss3,4
Tss6
Tss7,8
⊿Vstd1
⊿Vstd1
VREGA
VOUT6
Symbol
Vtcinv
Vstd1
Vstd2
fosc1
fosc2
Tscp
DVLi
IINV
Ios
-6.09
MIN
0.38
0.79
0.99
100
150
370
2.4
1.5
1.8
1.0
0.5
0.2
3.4
1.2
3.4
4.4
50
20
86
86
-
-
-
-
-
-6.00
Limit
TYP
0. 48
0.80
1.00
100
200
300
400
2.5
2.0
2.4
3.0
1.2
0.6
4.0
1.0
4.4
2.2
4.4
5.4
25
92
92
-
-
0
MAX
-5.91
0.58
0.81
1.01
12.5
200
300
600
100
430
2.6
2.3
2.5
5.3
1.4
0.7
5.4
3.2
5.4
6.6
30
96
96
50
-
-
msec
msec
msec
msec
msec
MHz
MHz
Unit
mV
mV
kHz
mV
mV
mA
ms
nA
V
V
V
V
V
%
%
%
V
V
V
VREGA Monitor
VCCOUT Monitor
INV
(※1)
INV1～8, NON6=3.0V
CH1～5
CH7,8V
NON5 12kΩ, 72kΩ
(※2)
VCCOUT=2.8～5.5V
Vref=0V
Io=5mA
CH8I
Monitor
Conditions
CH3～5
REV. A
CH1 Highside SW ON
Resistance
CH1 Lowside SW ON
Resistance
CH2 Highside SW ON
Resistance
CH2 Lowside SW ON
Resistance
CH3 Highside SW ON
Resistance
CH3 Lowside SW ON
Resistance
CH4 Highside SW ON
Resistance
CH4 Lowside SW ON
Resistance
CH5 Highside SW ON
Resistance
CH5 Lowside SW ON
Resistance
CH6 Driver Output
voltage H
CH6 Driver Output
voltage L
CH7,8 NMOS SW ON
Resistance
CH7,8 Load SW ON
Resistance
STB
voltage
voltage
Stand-by
Circuit Current when
start-up
（VBAT current when
voltage supplied for the
terminal）
Circuit Current 1
（VBAT current when
voltage supplied for the
terminal）
Circuit Current 2
（VCCOUT current
when voltage supplied for
the terminal）
【Output Driver】
【STB13～7】
Control
Pull down Resistance
【UPIC8】
UPIC8
Control
Pull down Resistance
【Circuit Current】
Current
Parameter
Active
Active
Not
terminal
terminal
terminal
HS7,8H
terminal
Active
Active
VBAT
Not
Hｘ
Lx
RON1p
RON1N
RON21p
RON21N
RON3p
RON3N
RON4p
RON4N
RON5p
RON5N
Vout6H
Vout6L
RON7,8
N
RON7,8p
IST
Icc1
Icc2
VSTBL1
RUPIC1
VSTBH
Symbol
RSTB1
VUPIH
VUPIL
ISTB1
ISTB2
ISTB3
ISTB4
1
VCCOUT
MIN
-1. 5
-0.3
250
1.5
2.1
30
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0
-
-
-
-
VCCOUT
Limit
TYP
120
250
250
250
250
250
250
250
150
500
200
150
-1. 0
400
80
0.5
45
5.0
50
-
-
-
-
-
-
-
-
MAX
270
240
400
400
400
400
400
400
400
300
800
350
700
4.00
0.40
450
150
1.0
9.7
5.5
0.3
80
-
5
5
5
5
μA
μA
mA
mΩ
mΩ
mΩ
mΩ
mΩ
mΩ
mΩ
mΩ
mΩ
mΩ
mΩ
mΩ
μA
μA
μA
μA
Unit
kΩ
kΩ
V
V
V
V
V
V
Hx1=5V
VCCOUT=5. 0 V
Hx2=3V
VCCOUT=5. 0 V
Hx3=3V ,
VCCOUT=5V
VCCOUT=5. 0 V
Hx4=3V,
VCCOUT=5V
VCCOUT=5. 0 V
Hx5=3V
VCCOUT=5. 0 V
IOUT6=50mA
,NON6=0.2V
IOUT6=-50mA
NON6=-0.2V
VCCOUT=5. 0 V
HS7,8H=3V ,
VCCOUT=5. 0 V
VBAT=1.5V
VBAT=3.0V
Step down
Step up
INV1～8=1.2V ,
NON6=-0.2V
Conditions
2/4