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BD6085GUL
Technical data
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ROHM BD6085GUL Technical data

A
LED Drivers for LCD Backlights
BD6085GUL
●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 Over voltage protection (Auto-return type) Over current protection (Auto-return type)
4) Thermal shutdown (Auto-return type)
2
5) I
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 ℃)
functions
C BUS FS mode(max 400kHz)Write/Read
No.11040EAT28
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 Symbol Ratings Unit
VBAT input voltage VBAT 2.7~5.5 V
VIO pin voltage VIO 1.65~3.3 V
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℃)
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2011.04 - Rev.
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BD6085GUL
Technical Note
●Electrical Characteristics (Unless otherwise specified, Ta=25°C, VBAT=3.6V, VIO=1.8V)
Parameter Symbol
Min. Typ. Max.
Limits
Unit 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 RESETB=0V, VIO=1.8V
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
LDO1=LDO2=ON, I Other blocks=OFF LDO3=LDO4=ON, I Other blocks=OFF LDO1=LDO2=ON, I DC/DC x1mode, I
=2.8125(30x3/32)mA x 4ch
LED
DC/DC x1mode, I VBAT=3.7V, LED Vf=3.0V DC/DC x1.33mode, I VBAT=3.1V, LED Vf=3.0V DC/DC x1.5 mode, I VBAT=2.9V, LED Vf=3.5V DC/DC x2 mode, I VBAT=2.9V, LED Vf=4.0V
LDO
LDO
LDO
LED
LED
=60mA
LED
LED
【LED Driver】
LED current Step ILEDSTP 32 Step LED1~7 White LED Maximum setup
current Flash LED Maximum setup current
White LED current accuracy IWLED -7% 15 +7% mA
Flash LED current accuracy IFLED - 60 - mA
IMAXWLED - 30 - mA LED1~7 (Normal mode)
IMAXFLED - 120 - mA LED5~7 (Flash mode)
=15mA setting (Normal mode)
I
LED
At VLED=1.0V I
=60mA setting (Flash mode)
LED
At VLED=1.0V
LED current Matching ILEDMT - - 4 % Between LED1~7 at VLED=1.0V
Flash / Normal current ratio RATFL 3.2 4 4.8 A/A
LED5~7, Flash mode/Normal mode At VLED=1.0V
LED OFF Leak current ILKLED - - 1.0 μA VLED=4.5V
【DC/DC(Charge Pump)】
Maximum Output voltage V℃P 4.65 5.1 5.55 V
Current Load IOUT - - 480 mA VBAT≥3.2V, VOUT=4V
Oscillator frequency fosc 0.72 0.9 1.08 MHz Over Voltage Protection detect
voltage
OVP 5.0 5.5 6.0 V
Short Circuit current limit Ilim - 250 500 mA VOUT=0V
【I2C Input (SDA, SCL)】
LOW level input voltage VIL -0.3 -
HIGH level input voltage VIH
Hysteresis of Schmitt trigger input LOW level output voltage (SDA) at 3mA sink current
Vhys
VOL 0 - 0.3 V
0.75 × VIO
0.05 × VIO
0.25 × VIO
VBAT
­+0.3
V
V
- - V
Input current each I/O pin lin -3 - 3 μA Input voltage = 0.1×VIO~0.9×VIO
【RESETB】
LOW level input voltage VIL -0.3 -
HIGH level input voltage VIH
0.75 × VIO
0.25 × VIO
VBAT
­+0.3
V
V
Input current each I/O pin Iin -3 - 3 μA Input voltage = 0.1×VIO~0.9×VIO
=0mA
=0mA
=0mA
=60mA
=60mA
=60mA
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BD6085GUL
●Electrical Characteristics (Unless otherwise specified, Ta=25°C, VBAT=3.6V, VIO=1.8V)
Parameter Symbol
【Regulator (LDO1)】
Output voltage Vo1
Output Current Io1 - - 200 mA Vo=1.8V
Dropout Voltage Vsat1 - 0.2 0.3 V VBAT=2.5V, Io=200mA, Vo=2.8V
Load stability ΔVo11 - 10 60 mV Io=1~200mA, Vo=1.8V
Input voltage stability ΔVo12 - 10 60 mV VBAT=3.4~4.5V, Io=50mA, Vo=1.8V
Ripple Rejection Ratio RR1 - 65 - dB
Short circuit current limit Ilim1 - 250 500 mA Vo=0V
Discharge resister at OFF ROFF1 - 1.0 1.5 kΩ
【Regulator (LDO2)】
Output voltage Vo2
Output Current Io2 - - 200 mA Vo=2.5V
Dropout Voltage Vsat2 - 0.2 0.3 V VBAT=2.5V, Io=200mA, Vo=2.8V
Load stability Δvo21 - 10 60 mV Io=1~200mA, Vo=2.5V
Input voltage stability Δvo22 - 10 60 mV VBAT=3.4~4.5V, Io=50mA, Vo=2.5V
Ripple Rejection Ratio RR2 - 65 - dB
Short circuit current limit Ilim2 - 250 500 mA Vo=0V
Discharge resister at OFF ROFF2 - 1.0 1.5 kΩ
Min. Typ. Max.
1.164 1.20 1.236 V Io=50mA
1.261 1.30 1.339 V Io=50mA
1.455 1.50 1.545 V Io=50mA
1.552 1.60 1.648 V Io=50mA
1.746 1.80 1.854 V Io=50mA <Initial Voltage>
2.134 2.20 2.266 V Io=50mA
2.328 2.40 2.472 V Io=50mA
2.425 2.50 2.575 V Io=50mA
2.522 2.60 2.678 V Io=50mA
2.619 2.70 2.781 V Io=50mA
2.716 2.80 2.884 V Io=50mA
2.813 2.90 2.987 V Io=50mA
2.910 3.00 3.090 V Io=50mA
3.007 3.10 3.193 V Io=50mA
3.104 3.20 3.296 V Io=50mA
3.201 3.30 3.399 V Io=50mA
1.164 1.20 1.236 V Io=50mA
1.261 1.30 1.339 V Io=50mA
1.455 1.50 1.545 V Io=50mA
1.552 1.60 1.648 V Io=50mA
1.746 1.80 1.854 V Io=50mA
2.134 2.20 2.266 V Io=50mA
2.328 2.40 2.472 V Io=50mA
2.425 2.50 2.575 V Io=50mA <Initial Voltage>
2.522 2.60 2.678 V Io=50mA
2.619 2.70 2.781 V Io=50mA
2.716 2.80 2.884 V Io=50mA
2.813 2.90 2.987 V Io=50mA
2.910 3.00 3.090 V Io=50mA
3.007 3.10 3.193 V Io=50mA
3.104 3.20 3.296 V Io=50mA
3.201 3.30 3.399 V Io=50mA
Limits
Unit Condition
f=100Hz, Vin=200mVp-p, Vo=1.2V Io=50mA, BW=20Hz~20kHz
f=100Hz, Vin=200mVp-p, Vo=1.2V Io=50mA, BW=20Hz~20kHz
Technical Note
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2011.04 - Rev.
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BD6085GUL
●Electrical Characteristics (Unless otherwise specified, Ta=25°C, VBAT=3.6V, VIO=1.8V)
Parameter Symbol
【Regulator (LDO3)】
Output voltage Vo3
Output Current Io3 - - 150 mA Vo=1.8V
Dropout Voltage Vsat3 - 0.2 0.3 V VBAT=2.5V, Io=150mA, Vo=2.8V
Load stability Δvo31 - 10 60 mV Io=1~150mA, Vo=1.8V
Input voltage stability Δvo32 - 10 60 mV VBAT=3.4~4.5V, Io=50mA, Vo=1.8V
Ripple Rejection Ratio RR3 - 65 - dB
Short circuit current limit Ilim3 - 200 400 mA Vo=0V
Discharge resister at OFF ROFF3 - 1.0 1.5 kΩ
【Regulator (LDO4)】
Output voltage Vo4
Output Current Io4 - - 150 mA Vo=2.8V
Dropout Voltage Vsat4 - 0.2 0.3 V VBAT=2.5V, Io=150mA, Vo=2.8V
Load stability Δvo41 - 10 60 mV Io=1~150mA, Vo=2.8V
Input voltage stability Δvo42 - 10 60 mV VBAT=3.4~4.5V, Io=50mA, Vo=2.8V
Ripple Rejection Ratio RR4 - 65 - dB
Short circuit current limit Ilim4 - 200 400 mA Vo=0V
Discharge resister at OFF ROFF4 - 1.0 1.5 kΩ
Min. Typ. Max.
1.164 1.20 1.236 V Io=50mA
1.261 1.30 1.339 V Io=50mA
1.455 1.50 1.545 V Io=50mA
1.552 1.60 1.648 V Io=50mA
1.746 1.80 1.854 V Io=50mA <Initial Voltage>
2.134 2.20 2.266 V Io=50mA
2.328 2.40 2.472 V Io=50mA
2.425 2.50 2.575 V Io=50mA
2.522 2.60 2.678 V Io=50mA
2.619 2.70 2.781 V Io=50mA
2.716 2.80 2.884 V Io=50mA
2.813 2.90 2.987 V Io=50mA
2.910 3.00 3.090 V Io=50mA
3.007 3.10 3.193 V Io=50mA
3.104 3.20 3.296 V Io=50mA
3.201 3.30 3.399 V Io=50mA
1.164 1.20 1.236 V Io=50mA
1.261 1.30 1.339 V Io=50mA
1.455 1.50 1.545 V Io=50mA
1.552 1.60 1.648 V Io=50mA
1.746 1.80 1.854 V Io=50mA
2.134 2.20 2.266 V Io=50mA
2.328 2.40 2.472 V Io=50mA
2.425 2.50 2.575 V Io=50mA
2.522 2.60 2.678 V Io=50mA
2.619 2.70 2.781 V Io=50mA
2.716 2.80 2.884 V Io=50mA <Initial Voltage>
2.813 2.90 2.987 V Io=50mA
2.910 3.00 3.090 V Io=50mA
3.007 3.10 3.193 V Io=50mA
3.104 3.20 3.296 V Io=50mA
3.201 3.30 3.399 V Io=50mA
Limits
Unit Condition
f=100Hz, Vin=200mVp-p, Vo=1.2V Io=50mA, BW=20Hz~20kHz
f=100Hz, Vin=200mVp-p, Vo=1.2V Io=50mA, BW=20Hz~20kHz
Technical Note
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BD6085GUL
A
●Block Diagram / Application Circuit example
VBAT
VBATCP
VBAT1
VBAT2
VBATLDO1
VBATLDO2
10µF
Charge Pump
Mode Control
VIO
RESETB
SCL
SD
I/O
Level
Shift
IREF
VREF
AGND
WGND
CPGND
FLGND
Fig.1 Block Diagram / Application Circuit example 1
1μF (6.3V)
C1N
1μF (6.3V)
C1P
C2N
1μF (6.3V)
C2P
C3P
C3N
Charge Pump
x1 / x1.33 / x1.5 / x2
OVP
LED terminal voltage feedback
2
I
C interface
Digital Control
To L ED1 ~7
T3
T1
T2
Back Light (4ch) + Flash (total 360mA)
TSD
VBATLDO1VBATLDO2
LDO1
Vo selectable
Io=200mA
LDO2
Vo selectable
Io=200mA
LDO3
Vo s ele ctab le
Io=150mA
LDO4
Vo s ele ctab le
Io=150mA
T4
(Open)
(Open)
VOUT
LED1~4
LED5
LED6
LED7
LDO1O
LDO2O
LDO3O
LDO4O
1μF
1μF
1μF
1μF
Technical Note
2.2μF (6.3V)
Back Light
Flash
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2011.04 - Rev.
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BD6085GUL
A
VBAT
VBATCP
VBAT1
VBAT2
VBATLDO1
VBATLDO2
10µF
RESETB
SCL
SD
VIO
1μF (6.3V)
C1N
1μF (6.3V)
C1P
C2N
1μF (6.3V)
C2P
C3P
C3N
Charge Pump
x1 / x1.33 / x1.5 / x2
Charge Pump Mode Control
2
I
FLGND
C interface
Digital Control
To L ED1 ~7
T1
T2
Level
I/O
Shift
IREF
VREF
AGND
CPGND
WGND
Fig.2 Block Diagram / Application Circuit example 2
Back Light (6ch) + Flash (max 120mA)
OVP
LED terminal voltage feedback
TSD
T3
T4
(Open)
(Open)
VBATLDO1VBATLDO2
LDO1
Vo selectable
Io=200mA
LDO2
Vo selectable
Io=200mA
LDO3
Vo selectable
Io=150mA
LDO4
Vo selectable
Io=150mA
VOUT
LED1~6
LED7
LDO1O
LDO2O
LDO3O
LDO4O
Technical Note
Back Light
Main + Sub
Flash
1μF
1μF
1μF
1μF
2.2μF (6.3V)
Main only
or
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2011.04 - Rev.
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BD6085GUL
●Pin Arrangement ［Bottom View］
Technical Note
F
E
D
C
B
A
T4 VBATLDO2 VBAT1 AGND VBATLDO1 T3
LDO2O LDO4O VBAT2 LDO3O LDO1O VIO
LED6 LED7 RESETB SCL SDA C1N
LED5 FLGND CPGND C2N C1P
LED4 WGND LED2 VOUT C2P VBATCP
T1 LED3 LED1 C3N C3P T2
1 2 3 4 5 6
Index
Total: 35balls
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2011.04 - Rev.
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BD6085GUL
●Package
VCSP50L3
SIZE : 3.30mm×3.30mm A ball pitch : 0.5mm Height : 0.55mm max
Technical Note
BD6085
Lot No.
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2011.04 - Rev.
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BD6085GUL
●Pin Functions
Ball
No
No.
1 B6 VBATCP - - GND Power supply for charge pump A 2 F3 VBAT1 - - GND Power supply A 3 E3 VBAT2 - - GND Power supply A 4 F5 VBATLDO1 - - GND Power supply for LDO A 5 F2 VBATLDO2 - - GND Power supply for LDO A 6 A1 T1 I VBAT GND Test Input Pin (short to Ground) S 7 A6 T2 I VBAT GND Test Input Pin (short to Ground) S 8 F6 T3 O VBAT GND Test Output Pin (Open) M
9 F1 T4 O VBAT GND Test Output Pin (Open) N 10 E6 VIO - VBAT GND Power supply for I/O and Digital C 11 D3 RESETB I VBAT GND Reset input (L: reset, H: reset cancel) H 12 D5 SDA I/O VBAT GND I2C data input / output I 13 D4 SCL I VBAT GND I2C clock input H 14 C4 CPGND - VBAT - Ground B 15 F4 AGND - VBAT - Ground B 16 B2 WGND - VBAT - Ground B 17 C2 FLGND - VBAT - Ground B 18 D6 C1N I/O VBAT GND Charge Pump capacitor is connected F 19 C6 C1P I/O - GND Charge Pump capacitor is connected G 20 C5 C2N I/O VBAT GND Charge Pump capacitor is connected F 21 B5 C2P I/O - GND Charge Pump capacitor is connected G 22 A4 C3N I/O VBAT GND Charge Pump capacitor is connected F 23 A5 C3P I/O - GND Charge Pump capacitor is connected G 24 B4 VOUT O - GND Charge Pump output pin A 25 E5 LDO1O O VBAT GND LDO1 output pin Q 26 E1 LDO2O O VBAT GND LDO2 output pin Q 27 E4 LDO3O O VBAT GND LDO3 output pin Q 28 E2 LDO4O O VBAT GND LDO4 output pin Q 29 A3 LED1 I - GND LED cathode connection 1 (for Back Light) E 30 B3 LED2 I - GND LED cathode connection 2 (for Back Light) E 31 A2 LED3 I - GND LED cathode connection 3 (for Back Light) E 32 B1 LED4 I - GND LED cathode connection 4 (for Back Light) E 33 C1 LED5 I - GND LED cathode connection 5 (for Back Light or Flash) E 34 D1 LED6 I - GND LED cathode connection 6 (for Back Light or Flash) E 35 D2 LED7 I - GND LED cathode connection 7 (for Back Light or Flash) 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
Pin Name I/O
ESD Diode
For
Power
For
Ground
Functions
Technical Note
Equivalent
Circuit
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