ROHM BD6085GUL

LED Drivers for LCD Backlights
Multifunction Backlight LED Drivers
for Small LCD Panels (Charge Pump Type)
BD6085GUL
No.11040EAT28
●Description
BD6085GUL is Multi-Function LED Driver that is the most suitable for the cellular phone.
It has many functions that are needed to "the upper side" of the cellular phone.
●Features
1) Total 7LEDs driver for LCD Backlight (Main/Sub) and LED Flash
It can set maximum 30mA by 32 steps (Current DAC) for Main/Sub Display
It can set maximum 360mA for Flash LED driver
(It has 3 channels LED driver at maximum 120mA/ch for Flash.)
The number of lighting for Main/Sub/Flash LED can be set up grouping by register.
Ex. ) 4LEDs / 0LED / 3LEDs
4LEDs / 1LED / 2LEDs
4LEDs / 2LEDs / 1LED
4LEDs / 1LED / 1LED
5LEDs / 1LED / 1LED
5LEDs / 0LED / 2LEDs
6LEDs / 0LED / 1LED
It can use the 1LED Flash module to 3LED Flash module.
Normal mode = maximum 30mA/ch, Flash mode = x4 normal mode (for 3ch LED).
The grouping of LED is independently controlled by register.
2) 4ch Series Regulator (LDO)
It has selectable output voltage by the register.
LDO1,LDO2 : Iomax=200mA
LDO3,LDO4 : Iomax=150mA
3) Charge Pump DC/DC for LED driver
It has x1/x1.33/x1.5/x2 mode that will be selected automatically.
Soft start functions
Over voltage protection (Auto-return type)
Over current protection (Auto-return type)
4) Thermal shutdown (Auto-return type)
2
5) I C BUS FS mode(max 400kHz)Write/Read
6) VCSP50L3(3.30mm×3.30mm, 0.55mm) Small and thin CSP package
*This chip is not designed to protect itself against radioactive rays.
*This material may be changed on its way to designing.
*This material is not the official specification.
●Absolute Maximum Ratings (Ta=25 ℃)
Parameter
Symbol
Ratings
Unit
Maximum voltage
VMAX
7
V
Power Dissipation
Pd
1325
mW
Operating Temperature Range
Topr
-35 ~ +85
℃
Storage Temperature Range
Tstg
-55 ~ +150
℃
note)Power dissipation deleting is 10.6mW/ ℃, when it’s used in over 25 ℃.
(It’s deleting is on the board that is ROHM’s standard)
●Operating conditions
(VBAT≥VIO, Ta=-35~85 ℃)
Parameter
VBAT input voltage
VIO pin voltage
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© 2011 ROHM Co., Ltd. All rights reserved.
Symbol
Ratings
Unit
VBAT
2.7~5.5
V
VIO
1.65~3.3
V
1/28
2011.04 - Rev.A
BD6085GUL
Technical Note
●Electrical Characteristics (Unless otherwise specified, Ta=25°C, VBAT=3.6V, VIO=1.8V)
Limits
Parameter
Symbol
Unit
Min.
Typ.
Max.
Condition
【Circuit Current】
VBAT Circuit current 1
IBAT1
-
0.1
1.0
μA
RESETB=0V, VIO=0V
VBAT Circuit current 2
IBAT2
-
0.5
3.0
μA
VBAT Circuit current 3
IBAT3
-
90
150
μA
VBAT Circuit current 4
IBAT4
-
90
150
μA
VBAT Circuit current 5
IBAT5
-
390
600
μA
VBAT Circuit current 6
IBAT6
-
61
65
mA
VBAT Circuit current 7
IBAT7
-
84
94
mA
VBAT Circuit current 8
IBAT8
-
94
104
mA
VBAT Circuit current 9
IBAT9
-
128
136
mA
RESETB=0V, VIO=1.8V
LDO1=LDO2=ON, ILDO=0mA
Other blocks=OFF
LDO3=LDO4=ON, ILDO=0mA
Other blocks=OFF
LDO1=LDO2=ON, ILDO=0mA
DC/DC x1mode,
ILED=2.8125(30x3/32)mA x 4ch
DC/DC x1mode, ILED=60mA
VBAT=3.7V, LED Vf=3.0V
DC/DC x1.33mode, ILED=60mA
VBAT=3.1V, LED Vf=3.0V
DC/DC x1.5 mode, ILED=60mA
VBAT=2.9V, LED Vf=3.5V
DC/DC x2 mode, ILED=60mA
VBAT=2.9V, LED Vf=4.0V
【LED Driver】
LED current Step
White LED Maximum setup
current
Flash LED Maximum setup
current
ILEDSTP
32
Step
LED1~7
IMAXWLED
-
30
-
mA
LED1~7 (Normal mode)
IMAXFLED
-
120
-
mA
LED5~7 (Flash mode)
White LED current accuracy
IWLED
-7%
15
+7%
mA
Flash LED current accuracy
IFLED
-
60
-
mA
LED current Matching
ILEDMT
-
-
4
%
Flash / Normal current ratio
RATFL
3.2
4
4.8
A/A
LED OFF Leak current
ILKLED
-
-
1.0
μA
Maximum Output voltage
V℃P
4.65
5.1
5.55
V
Current Load
IOUT
-
-
480
mA
Oscillator frequency
Over Voltage Protection detect
voltage
Short Circuit current limit
fosc
0.72
0.9
1.08
MHz
OVP
5.0
5.5
6.0
V
Ilim
-
250
500
mA
LOW level input voltage
VIL
-0.3
-
HIGH level input voltage
VIH
ILED=15mA setting (Normal mode)
At VLED=1.0V
ILED=60mA setting (Flash mode)
At VLED=1.0V
Between LED1~7 at VLED=1.0V
LED5~7, Flash mode/Normal mode
At VLED=1.0V
VLED=4.5V
【DC/DC(Charge Pump)】
VBAT≥3.2V, VOUT=4V
VOUT=0V
2
【I C Input (SDA, SCL)】
Hysteresis of Schmitt trigger
input
LOW level output voltage
(SDA) at 3mA sink current
Input current each I/O pin
Vhys
0.75 ×
VIO
0.05 ×
VIO
-
0.25 ×
VIO
VBAT
+0.3
V
V
-
-
V
VOL
0
-
0.3
V
lin
-3
-
3
μA
VIL
-0.3
-
Input voltage = 0.1×VIO~0.9×VIO
【RESETB】
LOW level input voltage
HIGH level input voltage
VIH
Input current each I/O pin
Iin
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© 2011 ROHM Co., Ltd. All rights reserved.
0.75 ×
VIO
-3
-
2/28
0.25 ×
VIO
VBAT
+0.3
3
V
V
μA
Input voltage = 0.1×VIO~0.9×VIO
2011.04 - Rev.A
BD6085GUL
Technical Note
●Electrical Characteristics (Unless otherwise specified, Ta=25°C, VBAT=3.6V, VIO=1.8V)
Limits
Parameter
Symbol
Unit
Min.
Typ.
Max.
Condition
【Regulator (LDO1)】
Output voltage
Vo1
1.164
1.261
1.455
1.552
1.746
2.134
2.328
2.425
2.522
2.619
2.716
2.813
2.910
3.007
3.104
3.201
1.20
1.30
1.50
1.60
1.80
2.20
2.40
2.50
2.60
2.70
2.80
2.90
3.00
3.10
3.20
3.30
1.236
1.339
1.545
1.648
1.854
2.266
2.472
2.575
2.678
2.781
2.884
2.987
3.090
3.193
3.296
3.399
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
Output Current
Io1
-
-
200
mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA <Initial Voltage>
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Vo=1.8V
Dropout Voltage
Vsat1
-
0.2
0.3
V
Load stability
ΔVo11
-
10
60
mV
Io=1~200mA, Vo=1.8V
Input voltage stability
ΔVo12
-
10
60
mV
Ripple Rejection Ratio
RR1
-
65
-
dB
Short circuit current limit
Ilim1
-
250
500
mA
VBAT=3.4~4.5V, Io=50mA, Vo=1.8V
f=100Hz, Vin=200mVp-p, Vo=1.2V
Io=50mA, BW=20Hz~20kHz
Vo=0V
ROFF1
-
1.0
1.5
kΩ
Vo2
1.164
1.261
1.455
1.552
1.746
2.134
2.328
2.425
2.522
2.619
2.716
2.813
2.910
3.007
3.104
3.201
1.20
1.30
1.50
1.60
1.80
2.20
2.40
2.50
2.60
2.70
2.80
2.90
3.00
3.10
3.20
3.30
1.236
1.339
1.545
1.648
1.854
2.266
2.472
2.575
2.678
2.781
2.884
2.987
3.090
3.193
3.296
3.399
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
Output Current
Io2
-
-
200
mA
Dropout Voltage
Vsat2
-
0.2
0.3
V
Load stability
Δvo21
-
10
60
mV
Io=1~200mA, Vo=2.5V
Input voltage stability
Δvo22
-
10
60
mV
Ripple Rejection Ratio
RR2
-
65
-
dB
Ilim2
-
250
500
mA
VBAT=3.4~4.5V, Io=50mA, Vo=2.5V
f=100Hz, Vin=200mVp-p, Vo=1.2V
Io=50mA, BW=20Hz~20kHz
Vo=0V
ROFF2
-
1.0
1.5
kΩ
Discharge resister at OFF
VBAT=2.5V, Io=200mA, Vo=2.8V
【Regulator (LDO2)】
Output voltage
Short circuit current limit
Discharge resister at OFF
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© 2011 ROHM Co., Ltd. All rights reserved.
3/28
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA <Initial Voltage>
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Vo=2.5V
VBAT=2.5V, Io=200mA, Vo=2.8V
2011.04 - Rev.A
BD6085GUL
Technical Note
●Electrical Characteristics (Unless otherwise specified, Ta=25°C, VBAT=3.6V, VIO=1.8V)
Limits
Parameter
Symbol
Unit
Min.
Typ.
Max.
Condition
【Regulator (LDO3)】
Output voltage
Vo3
1.164
1.261
1.455
1.552
1.746
2.134
2.328
2.425
2.522
2.619
2.716
2.813
2.910
3.007
3.104
3.201
1.20
1.30
1.50
1.60
1.80
2.20
2.40
2.50
2.60
2.70
2.80
2.90
3.00
3.10
3.20
3.30
1.236
1.339
1.545
1.648
1.854
2.266
2.472
2.575
2.678
2.781
2.884
2.987
3.090
3.193
3.296
3.399
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
Output Current
Io3
-
-
150
mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA <Initial Voltage>
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Vo=1.8V
Dropout Voltage
Vsat3
-
0.2
0.3
V
Load stability
Δvo31
-
10
60
mV
Io=1~150mA, Vo=1.8V
Input voltage stability
Δvo32
-
10
60
mV
Ripple Rejection Ratio
RR3
-
65
-
dB
Short circuit current limit
Ilim3
-
200
400
mA
VBAT=3.4~4.5V, Io=50mA, Vo=1.8V
f=100Hz, Vin=200mVp-p, Vo=1.2V
Io=50mA, BW=20Hz~20kHz
Vo=0V
ROFF3
-
1.0
1.5
kΩ
Vo4
1.164
1.261
1.455
1.552
1.746
2.134
2.328
2.425
2.522
2.619
2.716
2.813
2.910
3.007
3.104
3.201
1.20
1.30
1.50
1.60
1.80
2.20
2.40
2.50
2.60
2.70
2.80
2.90
3.00
3.10
3.20
3.30
1.236
1.339
1.545
1.648
1.854
2.266
2.472
2.575
2.678
2.781
2.884
2.987
3.090
3.193
3.296
3.399
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
Output Current
Io4
-
-
150
mA
Dropout Voltage
Vsat4
-
0.2
0.3
V
Load stability
Δvo41
-
10
60
mV
Io=1~150mA, Vo=2.8V
Input voltage stability
Δvo42
-
10
60
mV
Ripple Rejection Ratio
RR4
-
65
-
dB
Ilim4
-
200
400
mA
VBAT=3.4~4.5V, Io=50mA, Vo=2.8V
f=100Hz, Vin=200mVp-p, Vo=1.2V
Io=50mA, BW=20Hz~20kHz
Vo=0V
ROFF4
-
1.0
1.5
kΩ
Discharge resister at OFF
VBAT=2.5V, Io=150mA, Vo=2.8V
【Regulator (LDO4)】
Output voltage
Short circuit current limit
Discharge resister at OFF
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© 2011 ROHM Co., Ltd. All rights reserved.
4/28
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA <Initial Voltage>
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Io=50mA
Vo=2.8V
VBAT=2.5V, Io=150mA, Vo=2.8V
2011.04 - Rev.A
BD6085GUL
Technical Note
●Block Diagram / Application Circuit example
C3P
C3N
C2P
C2N
C1P
C1N
1μF (6.3V)
1μF (6.3V)
1μF (6.3V)
VBAT
VBATCP
VOUT
Charge Pump
VBAT1
VBAT2
x1 / x1.33 / x1.5 / x2
VBATLDO1
2.2μF
(6.3V)
VBATLDO2
LED1~4
10µF
OVP
Charge Pump
Mode Control
LED terminal voltage feedback
Back Light
VIO
RESETB
LED5
SCL
Level
I/O
Shift
SDA
2
I C interface
LED6
Flash
TSD
Digital Control
LED7
IREF
VBATLDO2 VBATLDO1
To LED1~7
LDO1
VREF
Vo selectable
Io=200mA
LDO2
Vo selectable
Io=200mA
LDO3
LDO1O
1μF
LDO2O
1μF
LDO3O
Vo selectable
Io=150mA
LDO4
LDO4O
1μF
T4
(Open)
T3
(Open)
T2
T1
FLGND
WGND
CPGND
AGND
Vo selectable
Io=150mA
1μF
Fig.1 Block Diagram / Application Circuit example 1
Back Light (4ch) + Flash (total 360mA)
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© 2011 ROHM Co., Ltd. All rights reserved.
5/28
2011.04 - Rev.A
BD6085GUL
Technical Note
1μF (6.3V)
1μF (6.3V)
C3P
C3N
C2P
C2N
C1P
C1N
1μF (6.3V)
VBAT
VBATCP
VOUT
Charge Pump
VBAT1
VBAT2
x1 / x1.33 / x1.5 / x2
VBATLDO1
2.2μF
(6.3V)
VBATLDO2
LED1~6
10µF
OVP
Charge Pump
Mode Control
LED terminal voltage feedback
Back Light
Main only
or
Main + Sub
VIO
RESETB
SCL
I/O
SDA
Level
I2C interface
Shift
Digital Control
TSD
LED7
IREF
VBATLDO2 VBATLDO1
To LED1~7
LDO1
VREF
Vo selectable
Io=200mA
LDO2
Vo selectable
Io=200mA
LDO3
LDO1O
1μF
LDO2O
1μF
LDO3O
Vo selectable
Io=150mA
LDO4
1μF
LDO4O
1μF
T4
(Open)
T3
(Open)
T2
T1
FLGND
WGND
CPGND
Vo selectable
Io=150mA
AGND
Flash
Fig.2 Block Diagram / Application Circuit example 2
Back Light (6ch) + Flash (max 120mA)
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© 2011 ROHM Co., Ltd. All rights reserved.
6/28
2011.04 - Rev.A
BD6085GUL
Technical Note
●Pin Arrangement ［Bottom View］
F
T4
VBATLDO2
VBAT1
AGND
VBATLDO1
T3
E
LDO2O
LDO4O
VBAT2
LDO3O
LDO1O
VIO
D
LED6
LED7
RESETB
SCL
SDA
C1N
C
LED5
FLGND
CPGND
C2N
C1P
B
LED4
WGND
LED2
VOUT
C2P
VBATCP
A
T1
LED3
LED1
C3N
C3P
T2
1
2
3
4
5
6
Index
Total: 35balls
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© 2011 ROHM Co., Ltd. All rights reserved.
7/28
2011.04 - Rev.A
BD6085GUL
Technical Note
●Package
VCSP50L3
SIZE :
3.30mm×3.30mm
A ball pitch : 0.5mm
Height :
0.55mm max
BD6085
Lot No.
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8/28
2011.04 - Rev.A
BD6085GUL
Technical Note
●Pin Functions
No
Ball
No.
Pin Name
I/O
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
B6
F3
E3
F5
F2
A1
A6
F6
F1
E6
D3
D5
D4
C4
F4
B2
C2
D6
C6
C5
B5
A4
A5
B4
E5
E1
E4
E2
A3
B3
A2
B1
C1
D1
D2
VBATCP
VBAT1
VBAT2
VBATLDO1
VBATLDO2
T1
T2
T3
T4
VIO
RESETB
SDA
SCL
CPGND
AGND
WGND
FLGND
C1N
C1P
C2N
C2P
C3N
C3P
VOUT
LDO1O
LDO2O
LDO3O
LDO4O
LED1
LED2
LED3
LED4
LED5
LED6
LED7
I
I
O
O
I
I/O
I
I/O
I/O
I/O
I/O
I/O
I/O
O
O
O
O
O
I
I
I
I
I
I
I
ESD Diode
For
For
Power
Ground
GND
GND
GND
GND
GND
VBAT
GND
VBAT
GND
VBAT
GND
VBAT
GND
VBAT
GND
VBAT
GND
VBAT
GND
VBAT
GND
VBAT
VBAT
VBAT
VBAT
VBAT
GND
GND
VBAT
GND
GND
VBAT
GND
GND
GND
VBAT
GND
VBAT
GND
VBAT
GND
VBAT
GND
GND
GND
GND
GND
GND
GND
GND
Functions
Equivalent
Circuit
Power supply for charge pump
Power supply
Power supply
Power supply for LDO
Power supply for LDO
Test Input Pin (short to Ground)
Test Input Pin (short to Ground)
Test Output Pin (Open)
Test Output Pin (Open)
Power supply for I/O and Digital
Reset input (L: reset, H: reset cancel)
I2C data input / output
I2C clock input
Ground
Ground
Ground
Ground
Charge Pump capacitor is connected
Charge Pump capacitor is connected
Charge Pump capacitor is connected
Charge Pump capacitor is connected
Charge Pump capacitor is connected
Charge Pump capacitor is connected
Charge Pump output pin
LDO1 output pin
LDO2 output pin
LDO3 output pin
LDO4 output pin
LED cathode connection 1 (for Back Light)
LED cathode connection 2 (for Back Light)
LED cathode connection 3 (for Back Light)
LED cathode connection 4 (for Back Light)
LED cathode connection 5 (for Back Light or Flash)
LED cathode connection 6 (for Back Light or Flash)
LED cathode connection 7 (for Back Light or Flash)
A
A
A
A
A
S
S
M
N
C
H
I
H
B
B
B
B
F
G
F
G
F
G
A
Q
Q
Q
Q
E
E
E
E
E
E
E
※The LED terminal that isn't used is to short-circuit to the ground. But, the setup of a register concerned with LED that isn't used is prohibited.
Total: 35Pin
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© 2011 ROHM Co., Ltd. All rights reserved.
9/28
2011.04 - Rev.A
BD6085GUL
Technical Note
●Equivalent Circuit
A
B
E
F
VBAT
VBAT
I
VBAT
VIO
J
M
VBAT
VBAT
N
Q
VBAT
VBAT
R
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© 2011 ROHM Co., Ltd. All rights reserved.
VBAT
VBAT
C
VBAT
G
VIO
K
VIO
VBAT
O
VBAT
VBAT
S
VBAT
10/28
VIO
VBAT
D
VBAT
H
VBAT
VIO
L
VBAT
VBAT
P
VBAT
VBAT
T
VIO
VBAT
2011.04 - Rev.A
BD6085GUL
Technical Note
●I2C BUS format
The writing/reading operation is based on the I2C slave standard.
・Slave address
A7
A6
1
1
A5
1
A4
0
A3
1
A2
1
A1
0
R/W
1/0
・Bit Transfer
SCL transfers 1-bit data during H. SCL cannot change signal of SDA during H at the time of bit transfer. If SDA changes
while SCL is H, START conditions or STOP conditions will occur and it will be interpreted as a control signal.
SDA
SCL
SDA a state of stability：
SDA
It can change
Data are effective
・START and STOP condition
When SDA and SCL are H, data is not transferred on the I2C- bus. This condition indicates, if SDA changes from H to L
while SCL has been H, it will become START (S) conditions, and an access start, if SDA changes from L to H while SCL
has been H, it will become STOP (P) conditions and an access end.
SDA
SCL
S
P
STOP condition
START condition
・Acknowledge
It transfers data 8 bits each after the occurrence of START condition. A transmitter opens SDA after transfer 8bits data, and
a receiver returns the acknowledge signal by setting SDA to L.
DATA OUTPUT
BY TRANSMITTER
not acknowledge
DATA OUTPUT
BY RECEIVER
acknowledge
SCL
S
1
2
9
clock pulse for
acknowledgement
START condition
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8
11/28
2011.04 - Rev.A
BD6085GUL
Technical Note
・Writing protocol
A register address is transferred by the next 1 byte that transferred the slave address and the write-in command. The 3rd
byte writes data in the internal register written in by the 2nd byte, and after 4th byte or, the increment of register address is
carried out automatically. However, when a register address turns into the last address, it is set to 00h by the next
transmission. After the transmission end, the increment of the address is carried out.
*1
S X X X X X X X 0 A A7 A6 A5 A4 A3 A2 A1 A0 A D7 D6 D5 D4 D3 D2 D1 D0 A
slave address
register address
*1
D7 D6 D5 D4 D3 D2 D1 D0 A P
DATA
DATA
register address
increment
register address
increment
R/W=0(write)
A=acknowledge(SDA LOW)
A=not acknowledge(SDA HIGH)
S=START condition
P=STOP condition
*1: Write Timing
from master to slave
from slave to master
・Reading protocol
It reads from the next byte after writing a slave address and R/W bit. The register to read considers as the following address
accessed at the end, and the data of the address that carried out the increment is read after it. If an address turns into the
last address, the next byte will read out 00h. After the transmission end, the increment of the address is carried out.
S X X X X X X X
1 A D7 D6 D5 D4 D3 D2 D1 D0 A
slave address
D7 D6 D5 D4 D3 D2 D1 D0 A P
DATA
DATA
register address
increment
R/W=1(read)
register address
increment
A=acknowledge(SDA LOW)
A=not acknowledge(SDA HIGH)
S=START condition
P=STOP condition
from master to slave
from slave to master
・Multiple reading protocols
After specifying an internal address, it reads by repeated START condition and changing the data transfer direction. The
data of the address that carried out the increment is read after it. If an address turns into the last address, the next byte will
read out 00h. After the transmission end, the increment of the address is carried out.
S X X X X X X X 0 A A7 A6 A5 A4 A3 A2 A1 A0 A Sr X X X X X X X 1 A
slave address
slave address
register address
R/W=0(write)
R/W=1(read)
D7D6 D5D4D3D2D1D0 A P
D7 D6 D5 D4 D3D2 D1D0 A
DATA
DATA
register address
increment
from master to slave
from slave to master
register address
increment
A=acknowledge(SDA LOW)
A=not acknowledge(SDA HIGH)
S=START condition
P=STOP condition
Sr=repeated START condition
As for reading protocol and multiple reading protocols, please do A(not acknowledge) after doing the final reading
operation. It stops with read when ending by A(acknowledge), and SDA stops in the state of Low when the reading
data of that time is 0. However, this state returns usually when SCL is moved, data is read, and A(not acknowledge)
is done.
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12/28
2011.04 - Rev.A
BD6085GUL
Technical Note
●Timing diagram
SDA
t BUF
t SU;DAT
t LOW
t HD;STA
SCL
t HD;STA
S
t SU;STO
t SU;STA
t HD;DAT
Sr
t HIGH
P
●Electrical Characteristics(Unless otherwise specified, Ta=25 ℃, VBAT=3.6V, VIO=1.8V)
Standard-mode
Parameter
Symbol
Min.
Typ.
Max.
Min.
【I2C BUS format】
SCL clock frequency
fSCL
0
100
0
LOW period of the SCL clock
tLOW
4.7
1.3
HIGH period of the SCL clock
tHIGH
4.0
0.6
Hold time (repeated) START condition
After this period, the first clock is generated
Set-up time for a repeated START
condition
Data hold time
Data set-up time
Set-up time for STOP condition
Bus free time between a STOP
and START condition
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© 2011 ROHM Co., Ltd. All rights reserved.
S
Fast-mode
Typ.
Max.
-
400
-
kHz
μs
μs
Unit
tHD;STA
4.0
-
-
0.6
-
-
μs
tSU;STA
4.7
-
-
0.6
-
-
μs
tHD;DAT
tSU;DAT
tSU;STO
0
250
4.0
-
3.45
-
0
100
0.6
-
0.9
-
μs
ns
μs
tBUF
4.7
-
-
1.3
-
-
μs
13/28
2011.04 - Rev.A
BD6085GUL
Technical Note
●Register List
Register data
Address
Function
D7
D6
D5
D4
D3
D2
D1
D0
00h
-
GRPSET2
GRPSET1
GRPSET0
-
-
-
SFTRST
01h
-
LDO4EN
LDO3EN
LDO2EN
LDO1EN
FLLEDEN
SLEDEN
MLEDEN
Enable Control
02h
-
-
-
IMLED4
IMLED3
IMLED2
IMLED1
IMLED0
Main LED Current Setting
03h
-
-
-
ISLED4
ISLED3
ISLED2
ISLED1
ISLED0
04h
-
-
FLASHEN
IFLLED4
IFLLED3
IFLLED2
IFLLED1
IFLLED0
05h
LDO2VSEL3
LDO2VSEL2
LDO2VSEL1
LDO2VSEL0
LDO1VSEL3
LDO1VSEL2
LDO1VSEL1
LDO1VSEL0
06h
LDO4VSEL3
LDO4VSEL2
LDO4VSEL1
LDO4VSEL0
LDO3VSEL3
LDO3VSEL2
LDO3VSEL1
LDO3VSEL0
Software Reset
LED Lighting group Setting
Sub LED Current Setting
Flash LED Current Setting
Flash mode Setting
LDO1 Vout Control
LDO2 Vout Control
LDO3 Vout Control
LDO4 Vout Control
Input "0” for "-".
Prohibit to accessing the address that isn’t mentioned.
●Register Map
Address 00h < Software Reset, LED Lighting group Setting >
Address
R/W
Bit7
00h
R/W
-
Initial
Value
00h
-
Bit7 :
Bit6
Bit5
Bit4
GRPSET2 GRPSET1 GRPSET0
0
0
0
Bit3
Bit2
Bit1
Bit0
-
-
-
SFTRST
-
-
-
0
(Not used)
Bit [6:4] : GRPSET [2:0]
(Main group)
“000” :
“001” :
“010” :
“011” :
“100” :
“101” :
“110” :
“111” :
LED1~4
LED1~4
LED1~4
LED1~4
LED1~5
LED1~5
LED1~6
LED1~6
(Sub group)
--LED5
LED5~6
LED5
LED6
-------
(Flash group)
LED5~7
LED6~7
LED7
LED7
LED7
LED6~7
LED7
LED7
Bit [3:1] : (Not used)
Bit0 :
SFTRST
“0” :
Reset cancel
“1” :
Reset (All register initializing)
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14/28
2011.04 - Rev.A
BD6085GUL
Technical Note
Address 01h < Enable Control >
Address
R/W
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
01h
R/W
-
LDO4EN
LDO3EN
LDO2EN
LDO1EN
FLLEDEN
SLEDEN
MLEDEN
Initial
Value
00h
-
0
0
0
0
0
0
0
Bit7 :
(Not used)
Bit6 :
LDO4EN
“0” :
LDO4 OFF
“1” :
LDO4 ON
Bit5 :
LDO3EN
“0” :
LDO3 OFF
“1” :
LDO3 ON
Bit4 :
LDO2EN
“0” :
LDO2 OFF
“1” :
LDO2 ON
Bit3 :
LDO1EN
“0” :
LDO1 OFF
“1” :
LDO1 ON
Bit2 :
FLLEDEN
“0” :
Flash LED OFF
“1” :
Flash LED ON
Bit1 :
SLEDEN
“0” :
Sub LED OFF
“1” :
Sub LED ON
Bit0 :
MLEDEN
“0” :
Main LED OFF
“1” :
Main LED ON
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15/28
2011.04 - Rev.A
BD6085GUL
Technical Note
Address 02h < Main LED Current Setting >
Address
R/W
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
02h
R/W
-
-
-
IMLED4
IMLED3
IMLED2
IMLED1
IMLED0
Initial
Value
00h
-
-
-
0
0
0
0
0
Bit[7:5] : (Not used)
Bit[4:0] : IMLED [4:0]
“00000” :
“00001” :
“00010” :
“00011” :
“00100” :
“00101” :
“00110” :
“00111” :
“01000” :
“01001” :
“01010” :
“01011” :
“01100” :
“01101” :
“01110” :
“01111” :
“10000” :
“10001” :
“10010” :
“10011” :
“10100” :
“10101” :
“10110” :
“10111” :
“11000” :
“11001” :
“11010” :
“11011” :
“11100” :
“11101” :
“11110” :
“11111” :
0.9375 mA
1.875 mA
2.8125 mA
3.75 mA
4.6875 mA
5.625 mA
6.5625 mA
7.5 mA
8.4375 mA
9.375 mA
10.3125 mA
11.25 mA
12.1875 mA
13.125 mA
14.0625 mA
15 mA
15.9375 mA
16.875 mA
17.8125 mA
18.75 mA
19.6875 mA
20.625 mA
21.5625 mA
22.5 mA
23.4375 mA
24.375 mA
25.3125 mA
26.25 mA
27.1875 mA
28.125 mA
29.0625 mA
30 mA
(Initial value)
* LED Current : 30 x 1/32 mA Step
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16/28
2011.04 - Rev.A
BD6085GUL
Technical Note
Address 03h < Sub LED Current Setting >
Address
R/W
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
03h
R/W
-
-
-
ISLED4
ISLED3
ISLED2
ISLED1
ISLED0
Initial
Value
00h
-
-
-
0
0
0
0
0
Bit[7:5] : (Not used)
Bit[4:0] : ISLED [4:0]
“00000” :
“00001” :
“00010” :
“00011” :
“00100” :
“00101” :
“00110” :
“00111” :
“01000” :
“01001” :
“01010” :
“01011” :
“01100” :
“01101” :
“01110” :
“01111” :
“10000” :
“10001” :
“10010” :
“10011” :
“10100” :
“10101” :
“10110” :
“10111” :
“11000” :
“11001” :
“11010” :
“11011” :
“11100” :
“11101” :
“11110” :
“11111” :
0.9375 mA
1.875 mA
2.8125 mA
3.75 mA
4.6875 mA
5.625 mA
6.5625 mA
7.5 mA
8.4375 mA
9.375 mA
10.3125 mA
11.25 mA
12.1875 mA
13.125 mA
14.0625 mA
15 mA
15.9375 mA
16.875 mA
17.8125 mA
18.75 mA
19.6875 mA
20.625 mA
21.5625 mA
22.5 mA
23.4375 mA
24.375 mA
25.3125 mA
26.25 mA
27.1875 mA
28.125 mA
29.0625 mA
30 mA
(Initial value)
* LED Current : 30 x 1/32 mA Step
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17/28
2011.04 - Rev.A
BD6085GUL
Technical Note
Address 04h < Flash LED Current Setting, Flash mode Setting >
Address
R/W
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
04h
R/W
-
-
FLASHEN
IFLLED4
IFLLED3
IFLLED2
IFLLED1
IFLLED0
Initial
Value
00h
-
-
0
0
0
0
0
0
Bit[7:6] : (Not used)
Bit5 :
FLASHEN
“0” :
Flash mode OFF
“1” :
Flash mode ON (x4 normal mode)
Bit[4:0] : IFLLED [4:0]
“00000” :
“00001” :
“00010” :
“00011” :
“00100” :
“00101” :
“00110” :
“00111” :
“01000” :
“01001” :
“01010” :
“01011” :
“01100” :
“01101” :
“01110” :
“01111” :
“10000” :
“10001” :
“10010” :
“10011” :
“10100” :
“10101” :
“10110” :
“10111” :
“11000” :
“11001” :
“11010” :
“11011” :
“11100” :
“11101” :
“11110” :
“11111” :
(At FLASHEN=0)
(At FLASHEN=1)
0.9375 mA,
1.875 mA,
2.8125 mA,
3.75 mA,
4.6875 mA,
5.625 mA,
6.5625 mA,
7.5 mA,
8.4375 mA,
9.375 mA,
10.3125 mA,
11.25 mA,
12.1875 mA,
13.125 mA,
14.0625 mA,
15 mA,
15.9375 mA,
16.875 mA,
17.8125 mA,
18.75 mA,
19.6875 mA,
20.625 mA,
21.5625 mA,
22.5 mA,
23.4375 mA,
24.375 mA,
25.3125 mA,
26.25 mA,
27.1875 mA.
28.125 mA,
29.0625 mA,
30 mA,
3.75 mA
7.5 mA
11.25 mA
15 mA
18.75 mA
22.5 mA
26.25 mA
30 mA
33.75 mA
37.5 mA
41.25 mA
45 mA
48.75 mA
52.5 mA
56.25 mA
60 mA
63.75 mA
67.5 mA
71.25 mA
75 mA
78.75 mA
82.5 mA
86.25 mA
90 mA
93.75 mA
97.5 mA
101.25 mA
105 mA
108.75 mA
112.5 mA
116.25 mA
120 mA
(Initial value)
* LED Current : 30 x 1/32 mA Step (at FLASHEN=0), 120 x 1/32 mA Step (at FLASHEN=1)
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18/28
2011.04 - Rev.A
BD6085GUL
Technical Note
Address 05h < LDO1 Vout Control, LDO2 Vout Control >
Address
R/W
05h
R/W
Initial
Value
74h
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
LDO2VSEL3 LDO2VSEL2 LDO2VSEL1 LDO2VSEL0 LDO1VSEL3 LDO1VSEL2 LDO1VSEL1 LDO1VSEL0
0
1
1
1
0
1
0
0
Bit[7:4] : LDO2VSEL [3:0]
“0000” : 1.20 V
“0001” : 1.30 V
“0010” : 1.50 V
“0011” : 1.60 V
“0100” : 1.80 V
“0101” : 2.20 V
“0110” : 2.40 V
“0111” : 2.50 V (Initial value)
“1000” : 2.60 V
“1001” : 2.70 V
“1010” : 2.80 V
“1011” : 2.90 V
“1100” : 3.00 V
“1101” : 3.10 V
“1110” : 3.20 V
“1111” : 3.30 V
Bit[3:0] : LDO1VSEL [3:0]
“0000” : 1.20 V
“0001” : 1.30 V
“0010” : 1.50 V
“0011” : 1.60 V
“0100” : 1.80 V (Initial value)
“0101” : 2.20 V
“0110” : 2.40 V
“0111” : 2.50 V
“1000” : 2.60 V
“1001” : 2.70 V
“1010” : 2.80 V
“1011” : 2.90 V
“1100” : 3.00 V
“1101” : 3.10 V
“1110” : 3.20 V
“1111” : 3.30 V
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19/28
2011.04 - Rev.A
BD6085GUL
Technical Note
Address 06h < LDO3 Vout Control, LDO4 Vout Control >
Address
R/W
06h
R/W
Initial
Value
A4h
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
LDO4VSEL3 LDO4VSEL2 LDO4VSEL1 LDO4VSEL0 LDO3VSEL3 LDO3VSEL2 LDO3VSEL1 LDO3VSEL0
1
0
1
0
0
1
0
0
Bit[7:4] : LDO4VSEL [3:0]
“0000” : 1.20 V
“0001” : 1.30 V
“0010” : 1.50 V
“0011” : 1.60 V
“0100” : 1.80 V
“0101” : 2.20 V
“0110” : 2.40 V
“0111” : 2.50 V
“1000” : 2.60 V
“1001” : 2.70 V
“1010” : 2.80 V (Initial value)
“1011” : 2.90 V
“1100” : 3.00 V
“1101” : 3.10 V
“1110” : 3.20 V
“1111” : 3.30 V
Bit[3:0] : LDO3VSEL [3:0]
“0000” : 1.20 V
“0001” : 1.30 V
“0010” : 1.50 V
“0011” : 1.60 V
“0100” : 1.80 V (Initial value)
“0101” : 2.20 V
“0110” : 2.40 V
“0111” : 2.50 V
“1000” : 2.60 V
“1001” : 2.70 V
“1010” : 2.80 V
“1011” : 2.90 V
“1100” : 3.00 V
“1101” : 3.10 V
“1110” : 3.20 V
“1111” : 3.30 V
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20/28
2011.04 - Rev.A
BD6085GUL
Technical Note
●Explanation for operate
1. Reset
There are two kinds of reset, software reset and hardware reset.
(1) Software reset
・All the registers are initialized more than making a register (SFTRST) setup "1".
・The register of software resetting is an automatic return (Auto Return 0).
(2) Hardware reset
・It shifts to hardware reset by changing RESETB pin “H” → “L”.
・The condition of all the registers under hardware reset pin is returned to the initial value,
and it stops accepting all address.
・It’s possible to release from a state of hardware reset by changing RESETB pin “L” → “H”.
・RESETB pin has delay circuit. It doesn’t recognize as hardware reset in “L” period under 5μs.
(3) Reset Sequence
・When hardware reset was done during software reset, software reset is canceled when
hardware reset is canceled. (Because the initial value of software reset is “0”)
2. Thermal shutdown
The blocks which thermal shutdown function is effective in the following.
Charge pump
LED Driver
LDO1, LDO2, LDO3, LDO4
A thermal shutdown function works in about 190℃.
Detection temperature has a hysteresis, and detection release temperature is about 170℃.
(Design reference value)
3. Charge Pump for LED driver
Charge Pump block is designed for the power supply for LED driver.
It has the x1.0/x1.33/x1.5/x2.0 mode. it changes to the most suitable mode automatically by Vf of LED and the battery
voltage. It has the mode of x1.33 and it can be higher efficiency than traditional.
Start
Charge Pump circuit operates when any LED turns ON.
Soft start
When the start of the Charge Pump circuit is done, it has the soft start function to prevent a rush current.
VBAT
T VBATON
T VBATOFF
VIO
T VIOON=min 0.1ms
T VIOOFF=min 1ms
RESETB
T RSTB=min 0.1ms
T RST=min 0ms
EN (*1)
T SOFT
VOUT
LED Current
(*1) An EN signal in the upper figure means the following;
“EN is high” = Any LED turns ON
But if Ta >TSD, EN Signal doesn’t become effective.
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21/28
2011.04 - Rev.A
BD6085GUL
Technical Note
Charge Pump Mode transition
The transition of boost multiple transits automatically by Vf of LED and the battery voltage.
STANDBY
ALL off
Any LED on
1
○
Ta<TTSD
VBAT>2.3V(typ)
SOFT
CP x1.0 mode
After “VOUT>1.5V(typ)” detected, 142us(typ) wait
X1.0
CP x1.0 mode
mode up=”H”
mode down=”H”
X1.33
CP x1.33 mode
mode up=”H”
mode down=”H”
X1.5
CP x1.5mode
mode up=”H”
mode down=”H”
X2.0
CP x2.0mode
All LED OFF
RESET
BD6085GUL changes the four charge pump movement mode automatically to realize low consumption power.
< Mode Up >
A LED terminal voltage is monitored, and the movement mode is changed to ×1→×1.33, ×1.33→×1.5 and ×1.5→×2
automatically when a LED terminal voltage is lower than 0.2V (typ).
At this time, the maximum output voltage of the charge pump is restricted to 5.1V (typ).
< Mode Down >
The rise in the battery voltage, the off control of LED lighting and the data writing to the address 02h,03h,04h (LED
Current Setting) is monitored, and the movement mode is changed to ×2→×1.5→×1.33→×1 automatically at FLASHEN
(Address 04h) =“0”. This mode down movement lasts until a mode up movement happens. At FLASHEN=“1”, the mode
down doesn't happen.
The thresholds of rise in a battery voltage are 2.9V, 3.3V, 3.7V and 4.1V (typ).
And, as for the off control of LED lighting, it is shown that MLEDEN, SLEDEN and FLLEDEN (Address 01h) and
FLASHEN (Address 04h) transited in “1”→“0”.
Over Voltage protection / Over Current protection
Charge Pump circuit output (VOUT) is equipped with the over-voltage protection and the over current protection function.
A VOUT over-voltage detection voltage is about 5.5V(typ). (VOUT at the time of rise in a voltage)
A detection voltage has a hysteresis, and a detection release voltage is about 5.1V(typ).
And, when VOUT output short to ground, input current of the battery terminal is limited by an over current protection
function.
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22/28
2011.04 - Rev.A
BD6085GUL
Technical Note
4. LED Driver
LED current value setting (for Main/Sub)
Internal circuit fixes maximum current value of LED.
LED current is maximum 30mA/ch.
LED current value setting (for Flash)
Internal circuit fixes maximum current value of LED.
When FLASHEN (Address 04h)=0, LED current is maximum 30mA/ch. (Normal mode)
When FLASHEN (Address 04h)=1, LED current change to x4 of Normal mode. (Flash mode)
At Normal mode, it can use for LCD Backlight or Torch mode of Flash.
At Flash mode, it can use for LED Flash.
The number of LED Lighting
The number of lighting for Main/Sub/Flash LED can be set up grouping by the register GRPSET*
(Address 00h).
The setting of the number of lighting is as the following.
The grouping of LED (Main/Sub/Flash) is independently controlled by register MLEDEN, SLEDEN, FLLEDEN
(Address 01h).
Grouping
LED1
LED2
LED3
LED4
LED5
LED6
setting
(0,0,0)
Main
Main
Main
Main
Flash
Flash
(0,0,1)
Main
Main
Main
Main
Sub
Flash
(0,1,0)
Main
Main
Main
Main
Sub
Sub
(0,1,1)
Main
Main
Main
Main
Sub
(1,0,0)
Main
Main
Main
Main
Main
Sub
(1,0,1)
Main
Main
Main
Main
Main
Flash
(1,1,0)
Main
Main
Main
Main
Main
Main
(1,1,1)
Main
Main
Main
Main
Main
Main
Grouping setting (*,*,*) means (“GRPSET2”,”GRPSET1”,”GRPSET0”).
LED7
Main/Sub/Flash
Flash
Flash
Flash
Flash
Flash
Flash
Flash
Flash
4/0/3
4/1/2
4/2/1
4/1/1
5/1/1
5/0/2
6/0/1
6/0/1
The change of the Grouping setting with turning it on is prohibited.
The LED terminal that isn’t used must be connected to the ground.
Normal mode/Flash mode
Normal mode and Flash mode change as the figure of the follow.
ILED is set by the register.
FLLEDEN
FLASHEN
4×ILED
LED current
ILED
Normal mode
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Flash mode
23/28
Normal mode
2011.04 - Rev.A
BD6085GUL
Technical Note
5. I/O
When the RESETB pin is Low, the input buffers (SDA and SCL) are disable for the Low consumption power.
VBAT
VIO
RESETB=L, Output “H”
SCL
(SDA)
EN
LOGIC
Level
Shift
RESETB
6. About the start of LDO1~LDO4
It must start as follows.
VBAT
TVBATON
TVBATOFF
VIO
TVIOON=min 0.1ms
TVIOOFF=min 1ms
RESETB
TRSTB=min 0.1ms
TRST=min 0ms
LDO1EN or LDO2EN or
LDO3EN or LDO4EN
TRISE = max 1ms
LDO1O or LDO2O or
LDO3O or LDO4O
(LDO output)
<Start Sequence>
VBAT ON (Enough rise up) → VIO ON (Enough rise up) → Reset release → LDO ON
(Register access acceptable)
<End Sequence>
LDO OFF → Reset → VIO OFF (Enough fall down) → VBAT OFF
7. About the terminal management of the function that isn't used
Set up the terminal that isn't used as follows.
The LED terminal which isn't used : Short to ground
Don't do the control concerned with this terminal.
T1, T2 : Short to ground
T3, T4 : Open
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24/28
2011.04 - Rev.A
BD6085GUL
Technical Note
●PCB pattern of the Power dissipation measuring board
1st layer(component)
2nd layer
3rd layer
4th layer
5th layer
6th layer
7th layer
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© 2011 ROHM Co., Ltd. All rights reserved.
8th layer(solder)
25/28
2011.04 - Rev.A
BD6085GUL
Technical Note
●Cautions on use
(1) Absolute Maximum Ratings
An excess in the absolute maximum ratings, such as supply voltage, temperature range of operating conditions, etc.,
can break down devices, thus making impossible to identify breaking mode such as a short circuit or an open circuit. If
any special mode exceeding the absolute maximum ratings is assumed, consideration should be given to take physical
safety measures including the use of fuses, etc.
(2) Power supply and ground line
Design PCB pattern to provide low impedance for the wiring between the power supply and the ground lines. Pay
attention to the interference by common impedance of layout pattern when there are plural power supplies and ground
lines. Especially, when there are ground pattern for small signal and ground pattern for large current included the
external circuits, please separate each ground pattern. Furthermore, for all power supply pins to ICs, mount a capacitor
between the power supply and the ground pin. At the same time, in order to use a capacitor, thoroughly check to be sure
the characteristics of the capacitor to be used present no problem including the occurrence of capacity dropout at a low
temperature, thus determining the constant.
(3) Ground voltage
Make setting of the potential of the ground pin so that it will be maintained at the minimum in any operating state.
Furthermore, check to be sure no pins are at a potential lower than the ground voltage including an actual electric
transient.
(4) Short circuit between pins and erroneous mounting
In order to mount ICs on a set PCB, pay thorough attention to the direction and offset of the ICs. Erroneous mounting
can break down the ICs. Furthermore, if a short circuit occurs due to foreign matters entering between pins or between
the pin and the power supply or the ground pin, the ICs can break down.
(5) Operation in strong electromagnetic field
Be noted that using ICs in the strong electromagnetic field can malfunction them.
(6) Input pins
In terms of the construction of IC, parasitic elements are inevitably formed in relation to potential. The operation of the
parasitic element can cause interference with circuit operation, thus resulting in a malfunction and then breakdown of
the input pin. Therefore, pay thorough attention not to handle the input pins, such as to apply to the input pins a voltage
lower than the ground respectively, so that any parasitic element will operate. Furthermore, do not apply a voltage to the
input pins when no power supply voltage is applied to the IC. In addition, even if the power supply voltage is applied,
apply to the input pins a voltage lower than the power supply voltage or within the guaranteed value of electrical
characteristics.
(7) External capacitor
In order to use a ceramic capacitor as the external capacitor, determine the constant with consideration given to a
degradation in the nominal capacitance due to DC bias and changes in the capacitance due to temperature, etc.
(8) Thermal shutdown circuit (TSD)
This LSI builds in a thermal shutdown (TSD)circuit. When junction temperatures become detection temperature or
higher, the thermal shutdown circuit operates and turns a switch OFF. The thermal shutdown circuit, which is aimed at
isolating the LSI from thermal runaway as much as possible, is not aimed at the protection or guarantee of the LSI.
Therefore, do not continuously use the LSI with this circuit operating or use the LSI assuming its operation.
(9) Thermal design
Perform thermal design in which there are adequate margins by taking into account the permissible dissipation (Pd)in
actual states of use.
(10) LDO
Use each output of LDO by the independence. Don’t use under the condition that each output is short-circuited because
it has the possibility that an operation becomes unstable.
(11) About the pin for the test, the un-use pin
Prevent a problem from being in the pin for the test and the un-use pin under the state of actual use. Please refer to a
function manual and an application notebook. And, as for the pin that doesn't specially have an explanation, ask our
company person in charge.
(12) About the rush current
For ICs with more than one power supply, it is possible that rush current may flow instantaneously due to the internal
powering sequence and delays. Therefore, give special consideration to power coupling capacitance, power wiring,
width of ground wiring, and routing of wiring.
(13) About the function description or application note or more.
The function description and the application notebook are the design materials to design a set. So, the contents of the
materials aren't always guaranteed. Please design application by having fully examination and evaluation include the
external elements.
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© 2011 ROHM Co., Ltd. All rights reserved.
26/28
2011.04 - Rev.A
BD6085GUL
Technical Note
●Power dissipation (On the ROHM’s standard board)
1.6
1.4
1325mW
Power Dissipation Pd （W)
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
25
50
75
100
125
150
Ta（℃）
Information of the ROHM’s standard board
Material : glass-epoxy
Size :
Refer to after page.
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© 2011 ROHM Co., Ltd. All rights reserved.
27/28
2011.04 - Rev.A
BD6085GUL
Technical Note
●Ordering part number
B
D
6
Part No.
0
8
5
G
Part No.
6085
U
L
Package
GUL : VCSP50L3
-
E
2
Packaging and forming specification
E2: Embossed tape and reel
VCSP50L3(BD6085GUL)
35- φ 0.25±0.05
A
0.05 A B
(φ0.15)INDEX POST
F
E
D
C
B
A
S
Embossed carrier tape
Quantity
2500pcs
Direction
of feed
E2
The direction is the 1pin of product is at the upper left when you hold
( reel on the left hand and you pull out the tape on the right hand
B
1 2 3 4 5 6
0.4±0.1
)
0.4± 0.1
0.08 S
0.55MAX
3.3±0.1
Tape
P=0.5 × 5
1PIN MARK
0.1± 0.05
3.3± 0.1
<Tape and Reel information>
1pin
P=0.5×5
(Unit : mm)
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© 2011 ROHM Co., Ltd. All rights reserved.
Reel
28/28
Direction of feed
∗ Order quantity needs to be multiple of the minimum quantity.
2011.04 - Rev.A
Notice
Notes
No copying or reproduction of this document, in part or in whole, is permitted without the
consent of ROHM Co.,Ltd.
The content specified herein is subject to change for improvement without notice.
The content specified herein is for the purpose of introducing ROHM's products (hereinafter
"Products"). If you wish to use any such Product, please be sure to refer to the specifications,
which can be obtained from ROHM upon request.
Examples of application circuits, circuit constants and any other information contained herein
illustrate the standard usage and operations of the Products. The peripheral conditions must
be taken into account when designing circuits for mass production.
Great care was taken in ensuring the accuracy of the information specified in this document.
However, should you incur any damage arising from any inaccuracy or misprint of such
information, ROHM shall bear no responsibility for such damage.
The technical information specified herein is intended only to show the typical functions of and
examples of application circuits for the Products. ROHM does not grant you, explicitly or
implicitly, any license to use or exercise intellectual property or other rights held by ROHM and
other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the
use of such technical information.
The Products specified in this document are intended to be used with general-use electronic
equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices).
The Products specified in this document are not designed to be radiation tolerant.
While ROHM always makes efforts to enhance the quality and reliability of its Products, a
Product may fail or malfunction for a variety of reasons.
Please be sure to implement in your equipment using the Products safety measures to guard
against the possibility of physical injury, fire or any other damage caused in the event of the
failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM
shall bear no responsibility whatsoever for your use of any Product outside of the prescribed
scope or not in accordance with the instruction manual.
The Products are not designed or manufactured to be used with any equipment, device or
system which requires an extremely high level of reliability the failure or malfunction of which
may result in a direct threat to human life or create a risk of human injury (such as a medical
instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuelcontroller or other safety device). ROHM shall bear no responsibility in any way for use of any
of the Products for the above special purposes. If a Product is intended to be used for any
such special purpose, please contact a ROHM sales representative before purchasing.
If you intend to export or ship overseas any Product or technology specified herein that may
be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to
obtain a license or permit under the Law.
Thank you for your accessing to ROHM product informations.
More detail product informations and catalogs are available, please contact us.
ROHM Customer Support System
http://www.rohm.com/contact/
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© 2011 ROHM Co., Ltd. All rights reserved.
R1120A