BD6092GU-E2_技术文档

System LED Drivers for Mobile Phones

ALC^*PWM controller

(*ALC : Auto Luminous Control)

No.09041EAY08

BD6092GU

●Description

BD6092GU is the Auto Luminous Control IC, which adjusts PWM duty by surrounding ambient light.

Analog ambient light sensor is connected, and Auto Luminous Control does the automatic adjustment of the PWM output

duty by surrounding ambient light. By connecting to the LED driver’s control port, it can decrease the power consumption of

the back light system. It is possible to input the external PWM signal, and it can be mixed to PWM output.

This IC achieves compact size with the CSP package. (VCSP85H2).

●Features

1) Ambient Light Sensor interface

Main backlight can be controlled by ambient brightness.

Photo Diode, Photo Transistor, Photo IC(Linear/Logarithm) can be connected.

Bias source for ambient light sensor, ADC with an average filter, LOG conversion function, gain and offset

2) adjustment are built in.

PWM duty as ambient level can be customized.

Automatic gain control function can reduce sensor current at high brightness, and sensitivity up at dark brightness.

It can be input the external PWM. Output is mixed internal PWM and external PWM.

3) UVLO Function

4) I²C BUS Fast-mode protocol compatible(max 400kHz)

5) Package : VCSP85H2 (2.8mm², 0.5mm pitch) 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 ^oC)

Parameter

Maximum voltage

Symbol

VMAX

Pd

Limits

7

Unit

V

Power Dissipation

1250 note)

-40 ～ +85

-55 ～ +150

mW

℃

Operating Temperature Range

Storage Temperature Range

Topr

Tstg

℃

note)Power dissipation deleting is 10mW/ ^oC, when it’s used in over 25 ^oC.(It’s deleting is on the board that is ROHM’s standard)

●Operating conditions (VBAT≧VIO, Ta=-40～85℃)

Parameter

VBAT input voltage

VIO pin voltage

Symbol

VBAT1,2

VIO

Limits

Unit

V

2.7 ～ 5.5

1.65 ～ 3.3

Note1) Using at VBAT≧VIO condition

Note2) Using at same voltage VBAT1 and VBAT2

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2009.06 - Rev.A

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Application Note

BD6092GU

●Electrical Characteristics (Unless otherwise specified, Ta=25°C, VBAT=3.6V, VIO=1.8V)

Limits

Parameter

Symbol

Unit

Condition

Min.

Typ.

Max.

【Circuit Current】

VBAT Circuit Current 1

VBAT Circuit Current 2

IBAT1

IBAT2

-

0.1

0.5

3.0

μA

RESETB=0V, VIO=0V

RESETB=0V, VIO=1.8V

ALC block ON,ADCYC=0.5s setting.

Except sensor current

VBAT Circuit Current 3

IBAT3

-

0.17

1.0

mA

【Sensor Interface】

2.85

2.47

30

3.0

2.6

-

3.15

2.73

-

V

Io=200µA

SBIAS Output voltage

VoS

Io=200µA

SBIAS Output current

IomaxS

ROFFS

mA

kΩ

Vo=2.6V setting

SBIAS Discharge resister at OFF

-

1.0

1.5

VoS×

255/256

SSENS Input range

VISS

0

-

V

ADC resolution

ADRES

ADINL

8

-

bit

ADC Integral non-linearity error

ADC differential non-linearity error

【OSC】

-3

-1

+3

+1

LSB

ADDNL

-

Oscillation frequency

【UVLO】

FOSC

0.8

1.0

1.2

MHz

UVLO detect voltage

UVLO un-detect voltage

UVLO detect voltage hysteresis

【SDA, SCL】(I²C interface)

VUVLO1

VUVLO2

1.5

-

1.95

2.15

200

-

2.65

-

V

VBAT fall down

VBAT rise up

UVLOHYS

50

mV

0.25 ×

VIO

VBAT

+0.3

Input L level voltage

VILI

VIHI

-0.3

-

V

0.75 ×

VIO

0.05 ×

VIO

Input H level voltage

Hysteresis of Schmitt trigger input

VhysI

-

Output L level voltage

VOLI

linI

0

-

0.3

10

V

SDA, IOL=3 mA

Input current

-10

μA

Input voltage= 0.1×VIO～0.9×VIO

【RESETB,EXPWMIN】(CMOS input)

0.25 ×

VIO

VBAT

+0.3

Input L level voltage

Input H level voltage

VIL

-0.3

-

V

0.75 ×

VIO

VIH

V

Input current

Iin

-10

-

10

μA

Input volage= 0.1×VIO～0.9×VIO

PWM input frequency range

【DCDCOK】(CMOS input)

fpwm

1000

kHz PWMIN, Duty=50% input

0.25 ×

VIO

VBAT

+0.3

Input L level voltage

Input H level voltage

VIL

-0.3

-

V

0.75 ×

VIO

VIH

Iin

-

Input current

-10

10

μA

Input voltage= 0.1×VIO～0.9×VIO

【PWMOUT】(CMOS output)

Output L level voltage

VOLPW

VOHPW

DTYRES

-

0.2

-

V

IOL=1mA

IOH=1mA

VIO

-0.2

Output H level voltage

Output Duty resolution

8

bit

【GC1, GC2】(Sensor gain control, CMOS output)

Output L level voltage

VOLGC

-

0.2

-

V

IOL=1mA

IOH=1mA

VoS

-0.2

Output H level voltage

VOHGC

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2009.06 - Rev.A

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Application Note

BD6092GU

●Block Diagram / Application Circuit example

VIO

Battery

(

)

(

)

RESETB

(

)(

)

(

VREF

OSC

VBAT1

VBAT2

SCL

SDA

LEVEL

SHIFT

I²C

CONTROL

I/O

UVLO

EXPWMIN

DCDCOK

SBIAS

Photo IC

VDD

GND

IOUT

PWMOUT

1μF

GC1

GC2

PWM

Controller

SSENS

AGND

Sensor

I/F

ALC

BH1600FVC

GC2

GC1

* The example when using BH1600FVC and assuming

brightness range 10(lx)-50000(lx) by the panel of

20% transmissivity

Pin number : 24 pins

●Pin Arrangement ［Bottom View］

E

D

C

B

A

NCIN

SSENS

DCDCOK

NCO0

PWMOUT

SCL

NCO1

SBIAS

GC1

AGND

SDA

VIO

GC2

NCO2

EXPWMIN

NCO5

index

VBAT1

VBAT2

NCO4

NCOA

TESTIN

GND

RESETB

NCO3

1

2

3

4

5

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Application Note

BD6092GU

●Package

VCSP85H2

Size：2.80mm²

Baii pitch：0.5mm

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2009.06 - Rev.A

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Application Note

BD6092GU

●Pin Functions

ESD Diode

No

Equivalent

Circuit

Pin name

VBAT1

I/O

Function

No.

For VBAT For GND

1

2

B1

B3

A3

D2

C5

A4

D5

D4

D1

E2

C1

C2

C4

E4

E3

A2

E1

D3

E5

C3

A5

B5

B4

A1

-

AGND

GND

-

Power supply

Ground

A

B

C

D

E

D

J

VBAT2

GND

-

3

-

VBAT2

VBAT1

VBAT2

VBAT1

VBAT2

VBAT1

VBAT2

4

AGND

VIO

-

Ground

5

-

GND

AGND

GND

AGND

GND

Power supply for I/O

6

RESETB

SDA

I

Reset input (L: reset, H: reset cancel)

I²C data input / output

7

I/O

I

8

SCL

I²C clock input

9

SBIAS

SSENS

GC1

O

I

Bias output for the Ambient Light Sensor

Ambient Light Sensor input

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

H

O

I

Ambient Light Sensor gain control output 1

Ambient Light Sensor gain control output 2

External PWM input

I

GC2

I

EXPWMIN

PWMOUT

DCDCOK

TESTIN

NCIN

D

G

D

K

L

H

O

I

PWM output

DC/DC rise up flag input

Test input (Ground short)

Test output(Open)

I

NCO0

NCO1

NCO2

NCO3

NCO4

NCO5

NCOA

O

Test output(Open)

Using at same voltage VBAT1 and VBAT2.

Using at same voltage GND and AGND.

Voltage level is based on the voltage of GND and AGND.

●Equivalent Circuit

A

E

I

B

F

J

VBAT

C

G

K

VBAT

D

H

L

VBAT

VIO

VBAT

VIO

VBAT

VIO

VBAT

VIO

VBAT

VoS

VBAT

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2009.06 - Rev.A

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Application Note

BD6092GU

●I²C BUS format

The writing/reading operation is based on the I²C slave standard.

・Slave address

A7

1

A6

1

A5

1

A4

0

A3

1

A2

1

A1

1

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

Data are effective

：

SDA

It can change

・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

1

2

8

9

SCL

S

clock pulse for

acknowledgement

START condition

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2009.06 - Rev.A

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Application Note

BD6092GU

・Protocol

Example

Master side, transmitter

Slave side, receiver

START condition

STOP condition

acknowledge

Terms of repetition start

A

S

P

Sr

Slave side, transmitter

Master side, receiver

not acknowledge

1. 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.

Write Timing

0

A A7 A6 A5 A4 A3 A2 A1 A0 A D7D6D5D4D3D2D1D0 A

register address

DATA

D7D6D5 D4D3D2D1D0 A

DATA

register address

increment

P

S

X

slave address

register address

increment

R/W=0(write)

2. 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

1

A D7 D6 D5 D4 D3 D2 D1 D0 A

DATA

D7 D6 D5 D4 D3 D2 D1 D0 A

DATA

P

X

X X X X X X

slave address

R/W=1(read)

register address

increment

register address

increment

3. 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

A

A Sr

1 A

X X X X X X X

slave address

0

A7A6A5A4A3A2A1A0

register address

X X X X X X X

slave address

R/W=0(write)

R/W=1(read)

A

P

D7D6D5D4D3D2D1D0 A

DATA

D7D6D5D4D3D2D1D0

DATA

register address

increment

register address

increment

*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 readingdata 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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2009.06 - Rev.A

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Application Note

BD6092GU

●Timing diagram

SDA

t BUF

t SU;DAT

t HD;STA

t LOW

SCL

t SU;STO

t SU;STA

t HD;STA

t HD;DAT

S

Sr

P

S

t HIGH

●Electrical Characteristics(Unless otherwise specified, Ta=25 ^oC, VBAT=3.6V, VIO=1.8V)

Standard-mode

Fast-mode

Typ.

Parameter

【I²C BUS format】

Symbol

Unit

Min.

Typ.

Max.

Min.

Max.

SCL clock frequency

fSCL

tLOW

0

-

100

0

-

400

kHz

μs

ns

μs

LOW period of the SCL clock

HIGH period of the SCL clock

4.7

4.0

4.7

0

-

1.3

0.6

0

-

tHIGH

-

Hold time (repeated) START condition

After this period, the first clock is generated

tHD;STA

tSU;STA

tHD;DAT

tSU;DAT

tSU;STO

tBUF

-

Set-up time for a repeated START condition

Data hold time

-

0.9

-

3.45

Data set-up time

250

4.0

4.7

-

100

0.6

1.3

Set-up time for STOP condition

-

Bus free time between a STOP

and START condition

-

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2009.06 - Rev.A

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Application Note

BD6092GU

●Register List

Resister data

Address W/R

Function

D7

D6

D5

-

D4

D3

-

D2

-

D1

-

D0

SFTRST

VSB

00h

01h

W

-

Software reset

ADCYC (1) ADCYC (0)

FOUT (1)

GAIN (1)

GAIN(0)

STYPE

Measurement mode setting

Output mode setting

Output frequency setting

02h

W

-

FOUT (2)

FOUT (0) EXPWMEN OUTMD(2) OUTMD(1) OUTMD(0)

03h

04h

05h

W

FIXDUT (7) FIXDUT (6) FIXDUT (5) FIXDUT (4) FIXDUT (3) FIXDUT (2) FIXDUT (1) FIXDUT (0) Fixed PWM duty setting

THL (3)

THL (2)

THL (1)

THL (0)

TLH (3)

TLH (2)

TLH (1)

TLH (0)

PWM duty transition time

SOFS (3)

SOFS (2)

SOFS (1)

SOFS (0)

SGAIN (3) SGAIN (2) SGAIN (1) SGAIN (0) Measurement data correction

Ambient level output

06h

W/R

SB_ON

ADSTW(2) ADSTW(1) ADSTW(0)

AMB (3)

AMB (2)

AMB (1)

AMB (0)

AD start time setting

07h

08h

09h

0Ah

0Bh

0Ch

0Dh

0Eh

0Fh

10h

11h

12h

13h

14h

15h

16h

W

DUT0 (7)

DUT1 (7)

DUT2 (7)

DUT3 (7)

DUT4 (7)

DUT5 (7)

DUT6 (7)

DUT7 (7)

DUT8 (7)

DUT9 (7)

DUTA (7)

DUTB (7)

DUTC (7)

DUTD (7)

DUTE (7)

DUTF (7)

DUT0 (6)

DUT1 (6)

DUT2 (6)

DUT3 (6)

DUT4 (6)

DUT5 (6)

DUT6 (6)

DUT7 (6)

DUT8 (6)

DUT9 (6)

DUTA (6)

DUTB (6)

DUTC (6)

DUTD (6)

DUTE (6)

DUTF (6)

DUT0 (5)

DUT1 (5)

DUT2 (5)

DUT3 (5)

DUT4 (5)

DUT5 (5)

DUT6 (5)

DUT7 (5)

DUT8 (5)

DUT9 (5)

DUTA (5)

DUTB (5)

DUTC (5)

DUTD (5)

DUTE (5)

DUTF (5)

DUT0 (4)

DUT1 (4)

DUT2 (4)

DUT3 (4)

DUT4 (4)

DUT5 (4)

DUT6 (4)

DUT7 (4)

DUT8 (4)

DUT9 (4)

DUTA (4)

DUTB (4)

DUTC (4)

DUTD (4)

DUTE (4)

DUTF (4)

DUT0 (3)

DUT1 (3)

DUT2 (3)

DUT3 (3)

DUT4 (3)

DUT5 (3)

DUT6 (3)

DUT7 (3)

DUT8 (3)

DUT9 (3)

DUTA (3)

DUTB (3)

DUTC (3)

DUTD (3)

DUTE (3)

DUTF (3)

DUT0 (2)

DUT1 (2)

DUT2 (2)

DUT3 (2)

DUT4 (2)

DUT5 (2)

DUT6 (2)

DUT7 (2)

DUT8 (2)

DUT9 (2)

DUTA (2)

DUTB (2)

DUTC (2)

DUTD (2)

DUTE (2)

DUTF (2)

DUT0 (1)

DUT1 (1)

DUT2 (1)

DUT3 (1)

DUT4 (1)

DUT5 (1)

DUT6 (1)

DUT7 (1)

DUT8 (1)

DUT9 (1)

DUTA (1)

DUTB (1)

DUTC (1)

DUTD (1)

DUTE (1)

DUTF (1)

DUT0 (0)

DUT1 (0)

DUT2 (0)

DUT3 (0)

DUT4 (0)

DUT5 (0)

DUT6 (0)

DUT7 (0)

DUT8 (0)

DUT9 (0)

DUTA (0)

DUTB (0)

DUTC (0)

DUTD (0)

DUTE (0)

DUTF (0)

PWM duty at ambient level 0

PWM duty at ambient level 1

PWM duty at ambient level 2

PWM duty at ambient level 3

PWM duty at ambient level 4

PWM duty at ambient level 5

PWM duty at ambient level 6

PWM duty at ambient level 7

PWM duty at ambient level 8

PWM duty at ambient level 9

PWM duty at ambient level A

PWM duty at ambient level B

PWM duty at ambient level C

PWM duty at ambient level D

PWM duty at ambient level E

PWM duty at ambient level F

Input "0” for "-".

Vacancy address may be use for test.

Prohibit to accessing the address that isn’t mentioned and the register for test.

When reading data, I²C control timing and IC internal timing are non-synchronous relations. Please design that the problem

does not occur in application. For example, Three times agreement sequence is introduced.

The time indicated in register explanation is the TYP time made by dividing of the built-in OSC.

The registers except the following must be changed when only BD6092GU is not operate (OUTMD (2:0) = "000").

・FIXDUT (7:0) (Address03h: bit [7:0])

・THL (3:0)

・TLH (3:0)

・SB_ON

(Address04h: bit [7:4])

(Address04h: bit [3:0])

(Address06h: bit [7])

(Value setting of SB_ON has some restriction. See “●About setting of the output mode” to get more information.)

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2009.06 - Rev.A

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Application Note

BD6092GU

●Register Map

Address 00h < Software reset >

Function

BIT

Name

Init

0

1

D7

D6

D5

D4

D3

D2

D1

D0

-

0

-

SFTRST

Reset Release

Reset (Auto Return 0)

Address 01h < Measurement mode setting>

Function

BIT

Name

Init

0

1

D7

D6

-

ADCYC(1)

ADCYC(0)

Ambient brightness

measurement period

D5

ADCYC(1)

0

1

0

1

0

1

0.52 s

1.05 s

1.57 s

2.10 s

D4

D3

D2

ADCYC(0)

GAIN(1)

GAIN(0)

0

1

GAIN(1)

GAIN(0)

GC1 output

GC2 output

0

1

0

1

0

1

Automatic

1

0

1

0

linear sensor connection

(Internal LOG conversion)

D1

D0

STYPE

VSB

1

LOG sensor connection (Internal through)

SBIAS output voltage 2.6V

SBIAS output voltage 3.0V

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2009.06 - Rev.A

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Application Note

BD6092GU

Address 02h < Output mode, Output frequency setting>

Function

BIT

D7

Name

-

Init

-

0

-

1

-

D6

D5

D4

FOUT(2)

FOUT(1)

FOUT(0)

0

FOUT(2)

FOUT(1)

FOUT(0)

Output frequency

FOSC x 1/8192 (122.1Hz)

FOSC x 1/4096 (244.1Hz)

FOSC x 1/2048 (488.3Hz)

FOSC x 1/1024 (976.6Hz)

FOSC x 1/512 (1953.1Hz)

FOSC x 1/256 (3906.2Hz)

Prohibit

0

1

0

1

0

1

0

1

0

1

0

1

0

1

Prohibit

Frequency is a calculation value as an internal OSC frequency 1MHz (typ)

D3

D2

EXPWMEN

OUTMD(2)

0

Outside PWM input non-permission

Outside PWM input permission

Mode

OUTMD(2) OUTMD(1) OUTMD(0)

Output setting

Mode0

Mode1

Mode2

0

1

0

1

0

Forced L output (ALC=OFF)

Forced L output (ALC=ON)

Internal PWM forced H

(ALC=OFF)

D1

D0

OUTMD(1)

OUTMD(0)

0

Mode3

0

1

Internal PWM forced H

(ALC=ON)

Mode4

Mode5

Mode6

Mode7

1

0

1

0

1

0

1

Fixed PWM output (ALC=OFF)

Fixed PWM output (ALC=ON)

(Prohibition)

ALC PWM output

Address 03ｈ < Fixed PWM duty setting >

Function

BIT

Name

Init

0

1

D7

D6

D5

D4

D3

D2

D1

D0

FIXDUT(7)

FIXDUT(6)

FIXDUT(5)

FIXDUT(4)

FIXDUT(3)

FIXDUT(2)

FIXDUT(1)

FIXDUT(0)

0

FIXDUT(7)

FIXDUT(6)

FIXDUT(5)

FIXDUT(4)

FIXDUT(3)

FIXDUT(2)

FIXDUT(1)

FIXDUT(0)

PWM Duty

0

1/256

2/256

1/256

step

255/256

0

・

1

0

・

1

0

・

1

0

・

1

0

・

1

0

・

1

0

・

1

・

0

1

256/256

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2009.06 - Rev.A

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Application Note

BD6092GU

Address 04h <PWM duty transition time>

Function

BIT

Name

Init

0

1

THL (3)

TLH (3)

THL (2)

TLH (2)

THL (1)

TLH (1)

THL (0)

TLH (0)

LED Current slope control

1 step time

D7

THL (3)

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0.128 ms

0.256 ms

D6

D5

D4

D3

D2

D1

D0

THL (2)

THL (1)

THL (0)

TLH (3)

TLH (2)

TLH (1)

TLH (0)

1

0

1

0.512 ms

1.024 ms

2.048 ms

4.096 ms

8.192 ms

16.384 ms (TLH Initial)

32.768 ms

65.536 ms

98.304 ms

131.072 ms

163.840 ms(THL Initial)

196.608 ms

229.376 ms

262.144 ms

The duty step and the amount of Duty change per slope time vary according to the chosen output PWM frequency.

Moreover, final step is maybe rounded in the particular case of duty setting.

www.rohm.com

2009.06 - Rev.A

12/28

Application Note

BD6092GU

Address 05h < Measurement data correction >

Function

BIT

Name

Init

0

1

AD data

Offset adjust

SOFS(3)

1

SOFS(2)

0

SOFS(1)

SOFS(0)

0

D7

SOFS(3)

0

-8 LSB

1

・

0

・

0

・

1

・

-7 LSB

・

D6

D5

D4

SOFS(2)

SOFS(1)

SOFS(0)

0

1

0

・

1

0

・

1

0

・

1

0

1

・

-1 LSB

non-adjust

+1 LSB

・

0

1

0

1

+6 LSB

+7 LSB

Offset adjust is performed to ADC data.

AD data

Gain adjust

SGAIN(3)

SGAIN(2)

SGAIN(1)

SGAIN(0)

D3

D2

D1

D0

SGAIN(3)

SGAIN(2)

SGAIN(1)

SGAIN(0)

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

(reserved)

-37.5%

-31.25%

-25%

-18.75%

-12.5%

-6.25%

non-adjust

+6.25%

+12.5%

+18.75%

+25%

+31.25%

+37.5%

(reserved)

Gain adjust is performed to ADC data

The data after adjustment are round off by 8-bit data.

www.rohm.com

2009.06 - Rev.A

13/28

Application Note

BD6092GU

Address 06h < Ambient level output, AD start time setting>

Wright / Read resister

Function

BIT

D7

Name

Init

0

1

SB_ON

Intermittent ON

Usually ON

ADSTW (2) ADSTW (1) ADSTW (0)

AD start wait time

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0.512ms(16cycle)

8.704ms(272 cycle)

16.90ms(528 cycle)

33.28ms(1040 cycle)

66.05ms(2064 cycle)

131.6ms(4112 cycle)

262.7ms(8208 cycle)

Prohibit

D6

D5

D4

ADSTW(2)

ADSTW(1)

ADSTW(0)

0

“1cycle=FOSC/32 (Hz)” FOSC means internal clock frequency.

Internal frequency is 1MHz (typ.)

AMB (3)

AMB (2)

AMB (1)

AMB (0)

Brightness data

D3

D2

D1

D0

AMB (3)

AMB (2)

AMB (1)

AMB (0)

-

0

・

1

0

・

1

0

・

1

0

1

・

0

Brightness 0

Brightness 1

・

Brightness E

Brightness F

1

Read-out is possible only with AMB (3:0) of D3-0 through I²C. "0000" does read-out with D7-4

Address 07ｈ～16h < PWM duty at ambient level * >

Function

BIT

Name

Init

0

1

D7

D6

D5

D4

D3

D2

D1

D0

DUT* (7)

DUT* (6)

DUT* (5)

DUT* (4)

DUT* (3)

DUT* (2)

DUT* (1)

DUT* (0)

(*1)

DUT* (7)

DUT* (6)

DUT* (5)

DUT* (4)

DUT* (3)

DUT* (2)

DUT* (1)

DUT* (0)

PWM Duty

0

・

0

・

0

・

0

・

0

・

0

・

0

・

0

1

・

1/256

2/256

1/256

step

255/256

256/256

1

0

1

* in the table shows 0～F.

(*1) Refer to 8.PWM output duty change (table setup (initial value)).

www.rohm.com

2009.06 - Rev.A

14/28

Application Note

BD6092GU

●The explanation of the Auto Luminous Control

PWM duty to the brightness level is output by detecting the ambient information from the external ambient light sensor.

The auto luminous control system to the ambient brightness can be built by controlling DC/DC for the back light.

・Since BD6092GU has the bias adjustment function for sensors, ADC with an average filter, a gain offset adjustment

function, and LOG conversion function, an ambient light can be broadly chosen from Photo Diode, Photo Transistor,

Photo IC (a linear output / LOG output), etc.

・Ambient light is changed into brightness data by digital processing. The external output of data is possible by I²C.

・PWM Duty to brightness can be customized by the built-in pre-set table or the setting the registers.

・A slope function at PWM duty changing is built in. PWM duty changes without the incongruity.

・"Brightness data" is changing by IC internal clock. Be careful that the internal clock and the I²C clock are asynchronous

when reading the brightness by I²C.

EXPWMIN

Output voltage control

PWM Permission

LIN/LOG

Sensor offset adjust

Sensor Gain adjust

SBIAS

Conversion table

Change time setup

PWMOU

Equalization

processing LOG

conversion

sensor

Duty

SSENS

Measured

ADC

Slope

-value adjust

PWM

Change

processing

Controller

GC1

GC2

Gain

FIX Duty

Brightness data

Gain control ON/OFF

OSC

REF

: Effective even if not using ALC function

(1) Auto Luminous Control ON/OFF

・ALC block is ON/OFF automatically in accordance with the setup of OUTMD (2:0).

When only reading brightness information, an auto luminous control system can be built by reading resister by I²C.

(2) Sensor I/F

・The bias voltage is supplied to the ambient sensor by using SBIAS circuit.

・The bias voltage (VoS) is selectable by register setup.

Register: VSB

・The external resistance for the I-V conversion (Rs) is adjusted with adaptation of sensor characteristic.

Rs is large

Rs is small

Ambient

www.rohm.com

2009.06 - Rev.A

15/28

Application Note

BD6092GU

(3) I/V conversion

・Sensor gain switching function is built in to extend the dynamic range.

・It is controlled by register setup.

・When automatic gain control is off, the output logic of GC1 and GC2 can be set up in the manual.

Register: GAIN (1:0)

Non

Gain Cont.

Ambient

ex1

ex2

ex3

(BH1600FVC and connection)

SBIAS

VCC

IOUT

SSENS

BH1600

GC1

Applicationcircuit

GC1

GC2

GND

GC2

SGND

Resistance is a relative value.

Operation mode

GAIN(1:0)

Automatic

00

Manual

01

Automatic

00

Manual

01

Fixation

10

L

10

L

11

L

GC1 output

H

L

H

L

H

L

H

L

GC2 output

Sensor

H

L

Application

Automatic

High

Low

Automatic

High

Low

Gain state

Auto luminous control operates as Low gain when GAIN (1:0) is "01", as High gain when “10” or “11”.

www.rohm.com

2009.06 - Rev.A

16/28

Application Note

BD6092GU

(4). AD conversion

・Detection of ambient light information is periodically performed for low-power realization.

Bit:ADCYC(1:0)

・The current consumption of the sensor is reduced by turning off SBIAS and ADC except when measuring the brightness.

・Pull-down of SBIAS terminal and the SSENS terminal is on except when measuring the brightness.

・AD start wait time can be changed.

Bit：ADSTW(2:0)

・Since The calculation time of AMB (3:0) value is varied according to ADTSW (2:0), which means AD start wait time,

TAMB_first = 6-350mS. Take this time into consideration when reading AMB (3:0).

・SBAIS output can be set up in Intermittent or usually on.

Bit : SB_ON

SB_ON must be changed when REF block is ON only. Refer to “About setting of the output mode”.

ALCEN

ADCYC(1:0)

At SB_ON=1

ADC Cycle

At SB_ON=0

SBIAS Output

ADSTW (2:0)：AD start wait tim e

AD conversion tim e =5.5m s

ADC

AM B(3:0)

Initial =0000

T^{AM B_first = m in 6m s}

(5) ADC data gain / offset adjustment

・Gain and offset adjustment to ADC output data is possible.

・They are controlled by register setup.Register: SGAIN(3:0) Register: SOFS(3:0)

Gain Adjust = +

Gain adj.

Offset adj.

Offset Adjust = +

Ambient

(6) Average filter

・Average filter is built in to rid noise or flicker.

・16 times average

www.rohm.com

2009.06 - Rev.A

17/28

Application Note

BD6092GU

(7) Brightness data conversion

・Brightness data is judged to the 16 level by the ambient light.

・The table with LOG conversion or without LOG conversion can be chosen by the type of ambient light sensor.

Using linear type sensor: Logarithmic conversion

Using logarithmic type sensor: Data through

Resister：STYPE

・The brightness data is output through I²C.

(I²C and internal data are asynchronous.)

Ambient-brightness

conversion curve

Ambient

SSENS voltage

With LOG conversion

With GAIN control (GAIN ≠ 11)

Without LOG conversion

Without GAIN control

(GAIN=11, STYPE=1)

VoS×0／256

Brightness data

Without GAIN control

(GAIN=11, STYPE=0)

Low mode

High mode

0

1

2

3

4

5

6

7

8

9

A

B

C

D

E

F

VoS×0／256

VoS×1／256

VoS×2／256

VoS×3／256

-

VoS×0／256

VoS×17／256

VoS×18／256

VoS×26／256

VoS×27／256

VoS×36／256

VoS×37／256

VoS×47／256

VoS×48／256

VoS×59／256

VoS×60／256

VoS×71／256

VoS×72／256

VoS×83／256

VoS×84／256

VoS×95／256

VoS×96／256

VoS×107／256

VoS×108／256

VoS×119／256

VoS×120／256

VoS×131／256

VoS×132／256

VoS×143／256

VoS×144／256

VoS×155／256

VoS×156／256

VoS×168／256

VoS×169／256

VoS×181／256

VoS×182／256

VoS×255／256

-

VoS×1／256

VoS×2／256

-

VoS×3／256

VoS×4／256

-

VoS×4／256

VoS×5／256

VoS×6／256

VoS×7／256

VoS×8／256

VoS×5／256

VoS×7／256

-

VoS×8／256

VoS×0／256

VoS×1／256

VoS×12／256

VoS×13／256

VoS×21／256

VoS×22／256

VoS×37／256

VoS×38／256

VoS×65／256

VoS×66／256

VoS×103／256

VoS×104／256

VoS×179／256

VoS×180／256

VoS×255／256

VoS×10／256

VoS×11／256

VoS×15／256

VoS×16／256

VoS×22／256

VoS×23／256

VoS×32／256

VoS×33／256

VoS×47／256

VoS×48／256

VoS×68／256

VoS×69／256

VoS×95／256

VoS×96／256

VoS×135／256

VoS×136／256

VoS×186／256

VoS×187／256

VoS×255／256

VoS×2／256

VoS×3／256

VoS×4／256

VoS×6／256

VoS×7／256

VoS×10／256

VoS×11／256

VoS×18／256

VoS×19／256

VoS×32／256

VoS×33／256

VoS×59／256

VoS×60／256

VoS×99／256

VoS×100／256

VoS×186／256

VoS×187／256

VoS×255／256

-

In the Gain control mode, sensor gain changes in gray-colored ambient level.

www.rohm.com

2009.06 - Rev.A

18/28

Application Note

BD6092GU

(8) PWM output Duty setting

・The current of the LED driver to each Brightness is set up.

Although a table setup (initial value) is prepared beforehand, it can change into a user setup by overwriting.

Bit：DUT*(7:0)

Table setup (Initial value)

Brightness setup

Duty

Brightness setup

Duty

0

1

2

3

4

5

6

7

2Dh

31h

36h

3Fh

4Eh

60h

7Ch

99h

46/256

50/256

55/256

64/256

79/256

97/256

125/256

154/256

8

9

B9h

DEh

F5h

FFh

186/256

223/256

246/256

256/256

A

B

C

D

E

F

A conversion

rule can be

changed.

Brightness

(9) Slope process

Slope process is given to LED current to dim naturally.

・LED current changes in the 256Step gradation in slopeing.

UP(dark→bright ),Down(bright→dark) LED current transition speed are set individually.

Bit ：THL(3:0), TLH(3:0)

・PWM Duty as follows at the time of a slope.

TLH (THL) is a time setup of the current steps 2/256.

Data of a conversion table

PWM Duty

TLH

slope time

light→Dark, light→Dark

A setup to each is possible.

1

THL

256

t

www.rohm.com

2009.06 - Rev.A

19/28

Application Note

BD6092GU

(10) External PWM input

・The external PWM signal is output in accordance with the setup of OUTMD (2:0).

・It becomes PWM operation added to the PWM signal formed inside, and the most suitable for brightness compensation,

which reflected a factor except for ambient light.

The external PWM signal and an internal PWM signal are composed of the simple gate circuit with an output step, and it

can't keep synchronous relations. Therefore, a short pulse at the time of the mixing input may be output. Confirm that

you don't have an influence with a device to connect fully.

・The frequency of the external PWM signal and the internal PWM signal is to give the difference in ten times and more as

a recommendation. The frequency of the internal PWM signal can be set up with FOUT [2:0].

(Example)

The external PWM input frequency =5kHz

Internal PWM output frequency = 488.3Hz (FOUT [2:0] = "010" setup)

EXPWMEN

(Register)

FOUT(2:0)

Inside PWM

EXPWMIN

(Input)

PWMOUT

(Output)

・Set up Duty of internal longer PWM than the period of the external PWM when a mixing has the external PWM signal and

an internal PWM signal. (Recommendation)

In case of theALC (automatic style light) mode, DUT* register (*=0～F)

Period B

In case of the fixed PWM mode, FIXDUT (7:0) register

Internal PWM

EXPWMIN

(Input)

Period A

Periodic A << Periodic B

www.rohm.com

2009.06 - Rev.A

20/28

Application Note

BD6092GU

●About setting of the output mode

The output mode is set up by the register OUTMD (2:0) as follows.

The state of internal circuit operation to each setup as follows.

Ambient lbrightness measurement

and external PWM function

Internal block

Mode

PWMOUT output

(OUTMD(2:0)

A/D Internal PWM

SBIAS Slope setting

Ambient light

External PWM

measurement

REF OSC

Mode 0

(“000”)

Mode 1

(“001)

Forced L output

(ALC= off)

Forced L output

(ALC=ON)

OFF OFF

OFF

ON

Invalid

Acceptable

Possible

It can't be output.

ON

By EXPWMEN

(EXPWMIN through

is possible.)

By EXPWMEN

(EXPWMIN through

is possible.)

By EXPWMEN

(An EXPWMIN mixing is

possible.)

By EXPWMEN

(An EXPWMIN mixing

is possible.)

Mode 2

(“010)

Internal PWM forced H

(ALC=OFF)

OFF OFF

OFF

ON

Invalid

Acceptable

Possible

Mode 3

(“011)

Internal PWM forced H

(ALC=ON)

ON

Mode 4

(“100”)

Fixed PWM output

(ALC=OFF)

OFF

ON

Effective

Acceptable

Possible

Mode 5

(“101”)

Fixed PWM output

(ALC=ON)

Mode 6

(“110”)

(Prohibition

against a setup)

(Prohibition against a setup)

ON ON Effective

(Prohibition against a setup)

By EXPWMEN

Mode 7

(“111”)

ON

ALC PWM output

Possible

(An EXPWMIN mixing

is possible.)

A/D circuit operates regardless of SB_ON synchronizing with a measurement cycle.

SBIAS circuit operates synchronizing with a measurement cycle at SB_ON=0, and always operates at SB_ON=1.

(Note)It is necessary for setting SB_ON=1, to turn on REF block (Mode1,3,4,5,7).

When REF block turn off (Mode0,2), SB_ON must be set to “0”.

Example of SB_ON value setting

Mode

Mode7("111")

ON state

Mode0("000")

(OUTMD(2:0))

Internal

Reference

OFF state

Fix "0"

OFF state

Fix "0"

SB_ON

Measured brightness is reflected in AMB (3:0) register when A/D, SBIAS circuit are operating.

The enable/disenable of external PWM signal input, is controlled by register EXPWMEN.

PWMOUT output forced L at Mode0, Mode.

In order to spread external PWM signal in the IO or internal circuit, it consumes toggle current.

Supposing you care about consumption current, please stop an external PWM signal.

www.rohm.com

2009.06 - Rev.A

21/28

Application Note

BD6092GU

●Output PWM frequency and slope time

Output PWM frequency to choose, and slope time become the following relations.

When slope time is shortened in the slow PWM frequency, PWM Duty value to change in 1 step hit disappears in every 1

step. (The yellow part of the bottom table) Because of that, a slope becomes rough. Though it becomes the following step by

the internal calculation, it is rounded, and an error goes through the final step

FOUT

(2:0)

The time per

1 step (ms)

The number of PWM

clocks per 1 step

The change value

of PWM duty

FOUT

(2:0)

The time per

1 step (ms)

The number of PWM

clocks per 1 step

The change value

of PWM duty

0.128

0.256

1

64

32

16

8

0.128

0.256

1

32

16

8

0.512

1

0.512

1

1.024

1

1.024

1

4

2.048

1

4

2.048

1

2

4.096

1

2

4.096

1

8.192

1

8.192

2

1

16.384

32.768

65.536

98.304

131.072

163.840

196.608

229.376

262.144

2

1

16.384

32.768

65.536

98.304

131.072

163.840

196.608

229.376

262.144

4

1

(000)

(001)

4

1

8

1

8

1

16

24

32

40

48

56

64

1

12

16

20

24

28

32

1

FOUT

(2:0)

The time per

1 step (ms)

The number of PWM

clocks per 1 step

The change value

of PWM duty

FOUT

(2:0)

The time per

1 step (ms)

The number of PWM

clocks per 1 step

The change value

of PWM duty

0.128

0.256

1

16

8

4

2

1

0.128

0.256

1

8

4

2

1

0.512

1

0.512

1

1.024

1

1.024

1

2.048

1

2.048

2

4.096

2

4.096

4

8.192

4

8.192

8

16.384

32.768

65.536

98.304

131.072

163.840

196.608

229.376

262.144

8

16.384

32.768

65.536

98.304

131.072

163.840

196.608

229.376

262.144

16

32

64

96

128

160

192

224

256

(010)

(011)

16

32

48

64

80

96

112

128

FOUT

(2:0)

The time per

1 step (ms)

The number of PWM

clocks per 1 step

The change value

of PWM duty

FOUT

(2:0)

The time per

1 step (ms)

The number of PWM

clocks per 1 step

The change value

of PWM duty

0.128

0.256

1

4

2

1

0.128

0.256

1

2

1

0.512

1

0.512

2

1.024

2

1.024

4

2.048

4

2.048

8

4.096

8

4.096

16

8.192

16

32

64

128

192

256

320

384

448

512

8.192

32

16.384

32.768

65.536

98.304

131.072

163.840

196.608

229.376

262.144

16.384

32.768

65.536

98.304

131.072

163.840

196.608

229.376

262.144

64

(100)

(101)

128

256

384

512

640

768

896

1024

Slope

image

Setup PWM Duty value

PWM Duty value

Slope image

Final Step is at the limit

by the setup Duty

value.

PWM The amount of a change in Duty ・・・ Does Duty change 【 what Step each 】?

PWM The amount of a change in Duty

The number of PWM clocks of the 1step hit ・・・

How many PWM pulses are within 1Step time?

www.rohm.com

2009.06 - Rev.A

22/28

Application Note

BD6092GU

●Start sequence

1. Powers supply applied, register access

Do applied of the VIO voltage, a release of resetting and access to the register with the following process.

When the voltage condition of the VIO voltage >VBAT voltage occurred in short off of VBAT and so on,

the ESD protection diode of the VIO-VBAT space has the possibility that has electric current pass occurs.

But, there is no faulty operation if it is within the movement voltage range in a VIO voltage

and a VBAT voltage.

VBAT (Supplied)

VIO (Supplied)

RESETB

(External terminal control)

Register access

Possible

Impossible

Release RESETB after supplying VIO.

Prohibit to release VIO before falling RESETB.

2.PWM output start

A PWM signal starts as follows.

The start sequence which kept in touch with the LED driver is possible by using the DCDCOK input.

m

o d e

7

(m o d e 4 , 5 )

O

U T M D (2 :0 )

①

In te r n a l

O

S C

K

②

D C D C O

T L H ( 3 :0 )

( E x te r n a l In p u t)

P W

M O u tp u t D u ty

＜

A L C fu n c tio n ( m o d e 7 )＞

h e n U T M D ( 2 :0 )= (1 11 ) a n d

W

①

O

② D C D C O K = ’H ’, P W M o u tp u t

d u ty s ta rts in c r e a s in g to th e v a lu e s e t in b r ig h tn e s s le v e l 0 .

＜

F ix e d d u ty fu n c tio n (m o d e 4 , 5 )＞

W

h e n

①

O

U T M D ( 2 :0 )= (1 0 0 ) o r ( 1 0 1 ), a n d

o u tp u t d u ty s ta r ts in c r e a s in g to th e v a lu e s e t b y

F IX D U T ( 7 :0 ) .

② D C D C O K = ’H ’,

P W

M

3.PWM output end

Do the following sequence when you make it finish LED electric current of the LED driver which connects PWM output

smoothly. PWM output becomes L momentarily when DCDCOK=L or OUTMD (2:0) = "000" is taken.

mode7

mode4

mode0

OUTMD(2:0)

AMB(3:0)

When A/D is off, AMB (3:0) =”0000”

Inside OSC

DCDCOK

Tfinish

(External Input)

THL(3:0)

1/256

PWM output Duty

0/256(=L output)

Initially set FIXOUT (7:0) =’0’.

PWM output duty start decreasing to 1/256 in the slope of THL(3:0).

Set OUTMD(2:0)=”000” after PWM output duty is 1/256.

Host must manage Tfinish, which means the sloping time.

In this case, internal OSC doesn't stop. PWM output duty will be

changing to the fixed value by the time set by TLH (3:0) or THL (3:0

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2009.06 - Rev.A

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Application Note

BD6092GU

●Explanation for operate

1. Reset

There are two kinds of reset, software reset and hardware reset.

(1) Software reset

・All the registers are initialized by SFTRST="1".

・SFTRST is an automatically returned to "0". (Auto Return 0).

・Reset state needs over 1µs wait times from SFTRST=”1”.

(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.

・Even if RESETB=L, at FLASHCNT=H, Flash mode becomes ON by minimum setting.

(3) Reset Sequence

・When hardware reset was done during software reset, software reset is canceled whenhardware reset is canceled.

(Because the initial value of software reset is “0”)

●I/O

An optional input signal never spreads in the part Logic of the IC to stop the movement of the input buffer of SDA and SCL at

the time of the RESETB terminal =L.

At the time of RESETB=L, output "H"

Level Shift

SCL

Logic

(SDA)

EN

RESETB

It goes through the protection Diode of the terminal by rise up of the I/O power supply and the input level, and an electric

current route may occur.

●UVLO

The decrease voltage detection circuit of the VBAT terminal is built in.

It is effective when an internal standard voltage (REF) is turned on.

PWMOUT output becomes L forcibly at the time of the decrease voltage detection, and resetting gets the order circuit of the

ALC block except for the control register of I²C and the PWM control block, and it is initialized

●About the terminal management of the function which isn't used

Set up a test terminal and the terminal which isn't used as follows.

Do terminal management so that there may not be a problem referring to the equivalent circuit of the former extension under

the state of actual use.

EXPWMIN・・・・・・It short-circuits to the ground. (Make a setup of a register EXPWMEN=0.)

DCDCOK ・・・・・・It short-circuits to VIO. (It doesn't start when it short-circuits in the ground.)

GC1, GC2 ・・・・・・For the output terminal, opening

NCIN, TESTIN ・・・・It short-circuits to the ground.

NCO0～5,NCOA ・・・For the output terminal, opening

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2009.06 - Rev.A

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Application Note

BD6092GU

●PCB pattern of the Power dissipation measuring board

1^stlayer(component)

2^ndlayer

3^rdlayer

4^thlayer

5^thlayer

6^thlayer

7^thlayer

8^thlayer(solder)

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2009.06 - Rev.A

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Application Note

BD6092GU

●Notes for 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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2009.06 - Rev.A

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Application Note

BD6092GU

●Power dissipation (On the ROHM’s standard board)

1.6

ROHM’s standard board

Material : glass-epoxy

1.4

1250mW

Size : 50mm×58mm×1.75mm (8 layers)

Pattern : Refer to after

1.2

1.0

0.8

0.6

0.4

0.2

0.0

0

25

50

75

100

125

150

Ta（℃）

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2009.06 - Rev.A

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Application Note

BD6092GU

●Ordering part number

B

D

6

0

9

2

G U

-

E

2

Part No.

6092

Package

Packaging and forming specification

GU : VCSP85H2 E2: Embossed tape and reel

VCSP85H2 (BD6092GU)

Tape

Embossed carrier tape

2500pcs

1PIN MARK

Quantity

E2

Direction

of feed

2.8 0.1

0.08

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

(

)

S

φ

24- 0.30 0.05

0.05

A B

A

E

D

C

B

φ

(

0.15)INDEX POST

A

1

2 3 4 5

Direction of feed

1pin

0.4 0.1

P=0.5×4

Reel

Order quantity needs to be multiple of the minimum quantity.

(Unit : mm)

∗

www.rohm.com

2009.06 - Rev.A

28/28

Notice

N o t e s

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, commu-

nication 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,

fuel-controller 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/

www.rohm.com

R0039

A


型号：	BD6092GU-E2
厂家：	ROHM
描述：	Analog Circuit, 1 Func, PBGA24, 2.80 X 2.80 MM, 0.50 MM PITCH, ROHS COMPLIANT, VCSP85H2-24
文件：	总29页 (文件大小：570K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

BD6092GU-E2 [ROHM]

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