bh6948gu ROHM Co. Ltd., bh6948gu Datasheet - Page 2

• Manufacturer Part Number: bh6948gu
• Description: 7 X 7 Matrix Led Driver For Mobile Phone
• Manufacturer: ROHM Co. Ltd.

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(Unless otherwise specified, Ta=25℃,VBAT1=VBATCP=VBATCP1-3=3.6V,DVDD1=1.8V,DVDD2=2.85V)
Circuit
Current
DCDC
Converter
PMOS Switch
Current Driver
(Lo-Mode,
LED1~7)
Current Driver
(RGB with PWM
：LED1~7)
Under Voltage
Lockout
Soft-Start
Short Circuit
Protector
Over Current
Protector
Over Voltage
Protector
LED Dropout
Detector
SPI I/F
RSTB
Electrical Characteristics
Parameter
Stand-by Circuit Current
DC-DC Converter Current1
DC-DC Converter Current2
DC-DC Converter Current3
CPOUT Voltage1
CPOUT Output Current1
CPOUT Voltage2
CPOUT Output Current2
CPOUT Voltage3
CPOUT Output Current3
CPOUT Voltage4
CPOUT Output Current4
Oscillator Frequency
Leak Current when OFF
(SW1～7 total)
Output Current1
Output Current2、3
Output Current4～31
Output Current matching1
Output Current matching2
Leak Current when OFF
(SW1～7 total)
PWM on duty1
PWM on duty2
PWM on duty3
UVLO Threshold
UVLO Hysteresis
SS Mode Time
SCP Threshold
Delay Time
Reset Time
OCP Threshold
OVP Threshold
Detect Voltage
Input “H” Level
Input “L” Level
“H” Level Input Current
“L” Level Input Current
Input ”H” Level
Input “L” Level
”H” Level Input Current
“L” Level Input Current
Symbol
PWMD1
PWMD2
PWMD3
V
V
I
Mat1
Mat2
Vovp
I
I
I
V
V
V
V
I
V
fosc
LEAKP
T
T
I
V
QCP1
QCP2
QCP3
I
I
I
I
T
I
LEAK
V
V
I
I
V
V
I
UVLO
UVLO
OCP
CP1
CP2
CP3
CP4
I
I
I
O
RST
I
ST
CP1
CP2
CP3
CP4
O2
O4
SCP
DLY
SS
DR
IH
IH
IH
IL
IH
IH
１
IL
IL
MIN
4.55
4.55
0.96
1.54
43.7
84.6
5.50
0.36
-8.5
-8.0
-7.0
-0.3
-0.3
5.1
5.1
2.0
1.6
1.0
1.4
1.4
50
80
8
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
REV. B
Spec
TYP
0.93
4.75
4.75
1.20
5.04
47.2
88.1
2.25
5.62
0.40
100
100
790
6.4
4.8
5.3
5.3
2.0
1.2
10
0
0
0
0
0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
DVDD1
DVDD1
MAX
4.95
4.95
1.44
+8.5
+8.0
+7.0
8.54
40.7
91.6
5.74
0.44
+0.3
+0.3
11.5
190
190
190
190
150
120
8.8
1.4
9.6
7.2
5.5
5.5
7.0
7.0
2.6
2.4
1.4
0.4
0.4
10
12
1
1
1
1
-
Units
MHz
μA
mA
mA
mA
mA
mA
mA
mA
mV
mS
mS
mA
ms
uA
uA
uA
uA
uA
uA
%
%
%
%
%
%
%
%
V
V
V
V
V
V
V
V
V
V
V
V
Stand-by mode (RSTB=”H”)
1times mode
1.5times mode (CPOUT=4.75V)
2times mode (CPOUT=4.75V)
1.5times mode No Load
1.5times mode, VCPOUT>4V
49 LED lighting
2.0times mode No Load
2.0times mode, VCPOUT>4V
49 LED lighting
1.5times mode No Load
1.5times mode, VCPOUT>4V
49 LED lighting
2.0times mode No Load
2.0times mode, VCPOUT>4V
49 LED lighting
When
35H(MATRIXCNT)bit0(START)=0
I=1mA Setting
I=2～3mA Setting
I=4～31mA Setting
I=1～3mA Setting,
Mat1=(IoMax-IoMin)/IoMinx100
I=4～31mA Setting
Mat2=(IoMax-IoMin)/IoMinx100
When
35H(MATRIXCNT)bit0(START)=0
PWM1～7SET=5digit
PWM1～7SET=32digit
PWM1～7SET=58digit
VBAT falling
CPOUT falling
Condition
2/4