BD9352GUL Datasheet, PDF (2/5 Pages) Rohm – Silicon Monolithic Integrated Circuit

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○Electrical characteristics（Ta=25℃, VCC=3.0V, STB1～4=3V）
Parameter
Limit
Symbol
Unit
MIN
TYP MAX
【Internal Regulator VREGA】
Output Voltage VREGA
2.4
2.5
2.6
V
【Prevention Circuit of Miss Operation by Low voltage Input】
Threshold
Voltage
Vstd2
2.25
2.3
2.35
V
Hysteresis
Width
⊿Vstd1 50
100
150
mV
【Short Circuit Protection】
SCP
detect time
Tscp
20
25
30
ms
Timer
start threshold Vtcinv
0.38
0.48
0.58
V
voltage
【Oscillator】
Frequency CH2 fosc1
1.2
1.5
1.8 MHz
Frequency
CH1,3,4
fosc2
0.6
0.75
0.9 MHz
Max duty
CH1 LX11
Dmax11
-
-
100
%
Max duty CH1
Dmax12
86
92
96
%
LX12
Max duty 2
（step-down）
Dmax2
-
-
100
%
Max duty 3,4
Dmax3,4 86
92
96
%
【Error Amp】
Input
Bias current
IINV
-
0
50
nA
INV threshold 1 VINV1 0.79 0.80 0.81
V
【For Inverting Base Bias Voltage Vref】
CH3
Output Voltage
VOUT3
-7.105
Line Regulation DVLi
-
Output Current
Ios
0.2
When Shorted
【Soft start】
CH1
Soft Start Time
Tss1
2.6
CH2
Tss2
0.6
Soft Start Time
CH3
Soft Start Time
Tss3
2.6
CH4
Tss4
2.6
Soft Start Time
-7.00
4.0
1.0
3.5
0.9
3.5
3.5
-6.895
12.5
-
4.4
1.2
4.4
4.4
V
mV
mA
msec
msec
msec
msec
Conditions
Io=5mA
VCC Monitor
INV Monitor CH2
INV1～4,
NON3=3.0V
CH1, 2, 4
VCC=2.8～5.5V
Vref=0V
Parameter
Symbol
MIN
【Output Driver】
CH1 LX11 terminal
Highside SW
ON Resistance
CH1 LX11 terminal
Lowside SW
ON Resistance
CH1 LX12 terminal
Highside SW
ON Resistance
CH1 LX12 terminal
Lowside SW
ON Resistance
CH2 Highside SW
ON Resistance
CH2 Lowside SW
ON Resistance
CH3 Driver
Output voltage H
CH3 Driver
Output voltage L
CH4 NMOS SW
ON Resistance
CH4 Load SW
ON Resistance
RON11P
-
RON11N
-
RON12P
-
RON12N
-
RON2P
-
RON2N
-
VCC
Vout3H
-1.5
Vout3L
-
RON4N
-
RON4P
-
【Discharge switch】
CH3discharge SW
ON Resistance
RDCM
82
【Switch to configure Inverting/Step-down】
IDSEL
Control
voltage
Step
down
Inverting
VIDDO
VIDIN
VCC
×0.7
0
【STB1～4】
STB
Control
voltage
Active
Not
Active
Pull down Resistance
【Circuit Current】
VBAT
terminal
Stand-by
Hx
terminal
Current
Lｘ
terminal
HS4H
terminal
Circuit Current
（VCC current when
voltage supplied for
the terminal）
VSTBH1 1.5
VSTBL1 -0.3
RSTB1 250
ISTB1
-
ISTB2
-
ISTB3
-
ISTB4
-
Icc
-
Limit
TYP
120
130
120
100
250
250
VCC
-1.0
0.5
500
250
165
-
-
-
-
400
-
-
-
-
2.0
Unit
MAX
Conditions
200 mΩ Hx1=3.0V
210 mΩ VCC=3.0V
200 mΩ VOUT1=3.0V
160 mΩ VCC=3.0V
400 mΩ Hx2=3.0V
400 mΩ VCC=3.0V
IOUT3=-50mA
-
V
,NON3=0.2V
1.0
V
IOUT3=50mA
NON3=-0.2V
800 mΩ VCC=3.0V
350
mΩ
HS4H=3V ,
VCC=3.0V
330 Ω
VCC V (※1)
VCC
V (※1)
×0.3
5.5
V
0.3
V
700 kΩ
5 μA
5 μA Step down
5 μA Step up
5 μA
INV1～
4.0
mA
4=1.2V ,
NON3=-0.2V
(※1)The input of IDSEL terminal is CMOS inverter input that makes VCC a power supply.
Please connect to either of GND or VCC for irregular prevention.
◎This product is not designed for normal operation with in a radioactive environment
REV. B