bd9745ekn ROHM Co. Ltd., bd9745ekn Datasheet - Page 3

• Manufacturer Part Number: bd9745ekn
• Description: 7-channel Switching Regulator Controller For Digital Camera
• Manufacturer: ROHM Co. Ltd.

○Electrical characteristics（Ta=25℃，VBAT=3V, VCC=5V, RT=62kohm, STB1～7=3V）
【 Reference Voltage for CH5 】
Reference Voltage
Line Regulation
Load Regulation
Short Circuit Output Current
【 Internal Regulator 】
REGA Output Voltage
【 Low Voltage Input Prevented Operation Faults Circuit 】
Threshold Voltage 2
Hysteresis width 2
Threshold Voltage 3
Hysteresis width 3
【 Start up Circuit 】
Oscillator Frequency
Minimum VBAT Voltage
Soft-start time
【 Soft-Start 】
Soft-start time
(CH2～4,CH6,7)
Soft-start time CH5
【 Protection Circuit 】
Timer
Voltage
Timer
Voltage
SCP Standby Voltage
SCP Output Current
SCP Threshold Voltage
【 Triangular wave oscillator 】
Oscillator Frequency
CH1～4
Oscillator Frequency
CH5～7
【 Error Amp 】
Input Bias Current
INV Threshold
NON5 Threshold
INV7I Threshold
【 PWM Comparator 】
MAX DUTY1, 2,3,4
MAX DUTY5, 6,7
◎ This product is not designed for normal operation within a radioactive environment.
Parameter
Start
Start
Threshold
Threshold
Symbol
VREGA
VINV7I
Dmax2
Dmax4
ΔVst2
ΔVst3
VINV5
Vtcinv
DVLo
Vstd2
Vstd3
Fstart
Vref5
ｆosc1
ｆosc2
VINV
Vtcfb
Vscp
DVLi
Tss1
Tss4
Tss3
Vssc
Vst1
Iscp
Iinv
Ios
0.99
0.56
0.79
Min.
100
100
150
500
380
-12
0.2
2.4
2.3
1.6
1.5
2.6
6.8
5.8
2.1
0.9
1.0
86
77
-5
2
-
-
-
Spec.
1.00
0.64
0.80
Typ.
200
200
300
600
400
4.0
1.0
2.5
2.4
2.0
4.2
8.5
7.7
2.2
1.0
1.2
22
92
85
1
4
0
0
-
REV. D
1.01
12.5
10.2
0.72
0.81
Max
300
300
600
170
700
420
7.5
2.6
2.5
2.3
7.4
9.6
2.3
1.1
1.4
12
97
93
6
5
-
-
msec
msec
msec VREF5monitor
Units
MHz
kHz
μA
kHz
μA
mV
mV
mV
mV
mV
mA
mV
mV
%
%
V
V
V
V
V
V
V
V
V
STB5=3V
Vcc=2.8V～5.5V
Iref=10μA～100μA
Vref=0V
Ireg=5mA
VCC monitor
VREGA monitor
Error Amp Output monitor
CH1,5～7
INV monitor
CH2～4
VSCP=0.1V
RT=62kohm
RT=62kohm
INV1~4,6,7,7I,NON5=7.0V
CH1～4,CH6,7V
CH5
CH7I
Conditions.
Circuit
Test
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