MBI1009 - Macroblock, Inc.

Macroblock, Inc. 2004

Floor 6-4, No.18, Pu-Ting Rd., Hsinchu, Taiwan 30077, ROC.

TEL: +886-3-579-0068, FAX: +886-3-579-7534 E-mail: info@mblock.com.tw

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Macroblock

Preliminary Datasheet MBI1009

3-Channel RGB LED Lamp Driver

Features

l 3 output channels for RGB LED lamps

l Output current invariant to load voltage change

l Programmable output current for each channel

l Built-in brightness control

l Constant output current range: 5 - 40mA

l Output current accuracy:

between channels: <±5% (max.), and

between ICs: <±12% (max.)

l 3 ~ 5.5V supply voltage

General Description

MBI1009 is a 3-channel current sink driver for RGB LED lamps. It is easy to be designed in applications that need

mixing RGB light sources for multi-color output. MBI1009 contains a serial buffer and data latches which convert

serial input data into parallel output format. At MBI1009 output stage, three regulated current ports are designed to

provide uniform and constant current sinks for driving LEDs within a large range of Vf variations. The output current

is determined by an external resistor and the brightness control code, both set by users.

MBI1009 provides users with great flexibility and device performance. Users may adjust the output current from 5

mA to 40 mA, which gives users flexibility in controlling the light intensity of LEDs. MBI1009 guarantees to endure

maximum 17V at the output port.

Applications

l Multi-color (Color-variable) LED backlight for

portable devices

l Keypad backlighting

l

Push

-

button backlighting

MBI5168CP

MBI1009CP

SSOP16-150-0.64 Weight：0.07g

MBI1009 3-Channel RGB LED Lamp Driver

April 2004, V0.6

- 2 -

Block Diagram

Note: To let users understand how to use MBI1009, we assume OUT0 is GREEN output, OUT1 and OUT2

respectively for RED and BLUE. The applications of MBI1009 would not be limited to what has been shown in this

example.

Timing Diagram

Brightness Control Code

Bit Definition of 16-Bit Brightness Control Code

Bit 0

Bit 1

Bit 2

Bit 3

Bit 4

Bit 5

Bit 6

Bit 7

Bit 8

Bit 9

Bit 10

Bit 11

Bit 12

Bit 13

Bit 14

Bit 15

Meaning

G0

G1

G2

G3

G4 G5

R0

R1

R2

R3

R4

B0

B1

B2

B3

B4

GGREEN G

RED G

BLUE

Default

Value

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

16-bit Shift Register

16-bit Data Latch

LE

SDI

CLK

16

GND

IO Regulator

R

-

EXT

VDD

OE

6-bit

Brightness Control

5-bit

Brightness Control

5-bit

Brightness Control

Output Driver

OUT0 / GREEN

OUT1 / RED OUT2 / BLUE

6

5

S

DO

CLK

SDI

LE

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

G2

G1

G0 G5

G4

G3 R2

R1

R0 B0

R4

R3

B3

B2

B1 B4

Bit15

Bit14 Bit13 Bit12

Bit11

Bit10

Bit9 Bit8 Bit7 Bit6

Bit5

Bit4 Bit3 Bit2

Bit1 Bit0

MBI1009 3-Channel RGB LED Lamp Driver

April 2004, V0.6

- 3 -

Terminal Description

Pin No. Pin Name Function

1 GND Ground terminal for control logic and

current sinks

2 SDI Serial-data input to the shift register

3 CLK Clock input terminal for data shift on

rising edge

4 LE

Data strobe input terminal

Serial data is transferred to the

respective latch when LE is high. The

data is latched when LE goes low.

5 OUT0 Constant current output terminal

6-10 NC -

11 OUT1 Constant current output terminal

12 OUT2 Constant current output terminal

13 OE

Output enable terminal

When (active) low, the output drivers

are enabled; when high, all output

drivers are turned OFF (blanked).

14 SDO Serial-data output to the following SDI

of next driver IC

15 R-EXT Input terminal used to connect an

external resistor for setting up output

current for all output channels

16 VDD Supply voltage terminal

Pin Description

OE

VDD

GND

R-EXT

SDI SDO

CLK

LE

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

OUT0

NC

OUT1

OUT2

MBI1009 3-Channel RGB LED Lamp Driver

April 2004, V0.6

- 4 -

Maximum Ratings

Characteristic Symbol Rating Unit

Supply Voltage V

DD 0 ~ 7.0 V

Input Voltage V

IN -0.4 ~ VDD+0.4 V

Output Current I

OUT +60 mA

Output Voltage V

DS -0.5 ~ +17.0 V

Clock Frequency F

CLK 20 MHz

Operating Temperature T

opr -40 ~ +85 °C

Storage Temperature T

stg -55 ~ +150 °C

Electrical Characteristics (Ta = 25°C, VDD = 5V, unless otherwise noted)

Characteristics Symbol Condition Min. Typ. Max. Unit

Supply Voltage V

DD - 3.0 5.0 5.5 V

Output Voltage V

DS OUT0, OUT1, OUT2 terminals - - 17.0

V

Output Current I

OUT DC Test Circuit 5 - 40 mA

“H” level

VIH Ta = -40~85ºC 0.8VDD

- V

DD+0.3

V

Input Voltage “L” level

VIL Ta = -40~85ºC -0.3 - 0.3VDD

V

Output Leakage Current I

OH V

OH = 17.0V - - 10 μA

OUT0 / GREEN Current I

OUT,GREEN

VDS = 1.0V, Rex t = 3.6 KΩ

GGREEN = (G0,G1,G2,G3,G4,G5) =

(1,1,1,1,1,0) - 26.25

- mA

OUT1 / RED Current IOUT,RED VDS = 1.0V, Rext = 3.6 KΩ

GRED = (R0,R1,R2,R3,R4) =

(1,1,1,1,1) - 26.25

- mA

OUT2 / BLUE Current IOUT,BLUE VDS =1.0V, Rext = 3.6 KΩ

GBLUE = (B0,B1,B2,B3,B4) =

(1,1,1,1,1) - 26.25

- mA

Current Skew

∆IOUT IOUT = 26.25mA

VDS = 1.0V Rext = 3.6 KΩ - ±1 ±5 %

VDD within 2.7V and 3.3V,

R

ext = 3.6 KΩ - ±15 -

Output Current Variation

vs. Supply Voltage Variation

- VDD within 4.5V and 5.5V

Rext = 3.6 KΩ - ±3 - %

Pull-up Resistor R

IN(up) OE 250 500 800 KΩ

Pull-down Resistor R

IN(down)

LE 250 500 800 KΩ

“OUT Off”

IDD(off) 1

Rext = 3.6 KΩ, OUT0/OUT1/OUT2 =

Off, VDD = 3.3V - 3.0 6.0

“OUT On”

IDD(on) 1

Rext = 3.6 KΩ, OUT0/OUT1/OUT2 =

On, VDD = 3.3V - 3.0 6.0

“OUT Off”

IDD(off) 1

Rext = 3.6 KΩ, OUT0/OUT1/OUT2 =

Off, VDD = 5V - 8.0 12.0

Supply Current

“OUT On”

IDD(on) 1

Rext = 3.6 KΩ, OUT0/OUT1/OUT2 =

On, VDD = 5V - 8.0 15.0

mA

MBI1009 3-Channel RGB LED Lamp Driver

April 2004, V0.6

- 5 -

Switching Characteristics

(Ta = 25°C, VDD = 3.3V ~ 5V, unless otherwise noted)

Characteristics Symbol Min. Typ. Max. Unit

CLK tw(CLK) 25 - - ns

LE tw(L) 25 - - ns

Pulse Width

OE tw(OE) 1000 - - ns

Hold Time for LE th(L) 20 - - ns

Setup Time for LE tsu(L) 20 - - ns

Hold Time for SDI t

h(D) 15 - - ns

Setup Time for SDI t

su(D) 20 - - ns

Clock Frequency F

CLK - - 20 MHz

Output Rise Time (turn off) tor - 200 400 ns

Output Fall Time (turn on) tof - 200 400 ns

Timing Waveform

50%

th(L)

LE

t

W(CLK)

tsu(D) t

h(D)

50%

tW(L)

SDI

CLK 50%

tsu(L)

50%

tW(OE)

90%

10%

90%

tof

tor

OE

GREEN/RED/BLUE

MBI1009 3-Channel RGB LED Lamp Driver

April 2004, V0.6

- 6 -

Application Information

Typical Application Circuit

Current Setting for GREEN, RED, and BLUE Output Ports

The output currents of OUT0 / GREEN, OUT1 / RED, and OUT2 / BLUE are determined by an external resistor and

the 16-bit Brightness Control Code, both set by users.

That is:

IOUT,GREEN = GGREEN x I (Rext);

IOUT,RED = GRED x I (Rext);

IOUT,BLUE = GBLUE x I (Rext);

where I (Rext) is the reference current set by the external resistor Rext

and GGREEN, GRED, GBLUE are current gains for output channels OUT0 / GREEN, OUT1 / RED, and OUT2 / BLUE ,

respectively.

I (Rext) (Ta = 25°C, VDD = 3.3V) – A reference table

I (Rext) in mA

Rext Vout=

0.1V

Vout=

0.2V

Vout=

0.3V

Vout=

0.4V

Vout=

0.5V

Vout=

0.6V

Vout=

0.7V

Vout=

0.8V

Vout=

0.9V

Vout=

1.0V

4571Ω 3.05

4.01

4.19

4.26

3600Ω 3.64

5.07

5.4 5.52

5.52

2952Ω 4.14

6.08

6.62

6.80

I (Rext) (Ta = 25°C, VDD = 5V) – A reference table

I (Rext) in mA

Rext Vout=

0.1V

Vout=

0.2V

Vout=

0.3V

Vout=

0.4V

Vout=

0.5V

Vout=

0.6V

Vout=

0.7V

Vout=

0.8V

Vout=

0.9V

Vout=

1.0V

4571Ω 2.86

3.65

3.79

3.84

3600Ω 3.40

4.57

4.81

4.88

2952Ω 3.89

5.45

5.84

5.94

V

LED

CLK

SDO

/OE

LE

VDD

SD

I

MBI1009

Controller

3.3V or 5.0V

OUT0 / GREEN OUT1 / RED OUT2 / BLUE

R

-

EXT

GND

3.6 KΩ

MBI1009 3-Channel RGB LED Lamp Driver

April 2004, V0.6

- 7 -

Current Gain and Brightness Control Code

Bit Definition of 16-Bit Brightness Control Code

Bit 0

Bit 1

Bit 2

Bit 3

Bit 4

Bit 5

Bit 6

Bit 7

Bit 8

Bit 9

Bit 10

Bit 11

Bit 12

Bit 13

Bit 14

Bit 15

Meaning

G0

G1

G2

G3

G4 G5

R0

R1

R2

R3

R4

B0

B1

B2

B3

B4

GGREEN G

RED G

BLUE

Default

Value

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Bit 6 Bit 7 Bit 8 Bit 9 Bit 10

GRED R0 R1 R2 R3 R4

0 0 0 0 0 0

1 1 0 0 0 0

2 1 1 0 0 0

3 1 1 1 0 0

4 1 1 1 1 0

5 1 1 1 1 1

Bit 11 Bit 12 Bit 13 Bit 14 Bit 15

GBLUE B0 B1 B2 B3 B4

0 0 0 0 0 0

1 1 0 0 0 0

2 1 1 0 0 0

3 1 1 1 0 0

4 1 1 1 1 0

5 1 1 1 1 1

Bit 0 Bit 1 Bit 2 Bit 3 Bit 4 Bit 5

GGREEN G0 G1 G2 G3 G4 G5

0 0 0 0 0 0 0

1 1 0 0 0 0 0

2 1 1 0 0 0 0

3 1 1 1 0 0 0

4 1 1 1 1 0 0

5 1 1 1 1 1 0

6 1 1 1 1 1 1

Brightness Control Code

for GREEN (6-bit)

Brightness Control Code

for RED (5-bit)

Brightness Control Code

for BLUE (5-bit)

CLK

SDI

LE

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

G2

G1

G0 G5

G4

G3 R2

R1

R0 B0

R4

R3

B3

B2

B1 B4

Bit15

Bit14 Bit13

Bit12

Bit11

Bit10

Bit9 Bit8 Bit7 Bit6

Bit5

Bit4 Bit3 Bit2 Bit1 Bit0

MBI1009 3-Channel RGB LED Lamp Driver

April 2004, V0.6

- 8 -

An Example

Setting Rext = 4571Ω, Vout = 1.0V for OUT0 / GREEN, OUT1 / RED, and OUT2 / BLUE , then I (Rext) = 4mA

If the 16-bit Configuration Code is {111111, 00000, 11110},

IOUT,GREEN = GGREEN x I (Rext) = 6 x 4mA = 24mA ;

IOUT,RED = GRED x I (Rext) = 0 x 4mA = 0mA ;

IOUT,BLUE = GBLUE x I (Rext) = 4 x 4mA = 16mA;

The mixing multi-color is determined by IOUT,GREEN = 24mA, IOUT,RED = 0mA, and IOUT,BLUE = 16mA.

Assuming Luminous Intensity (mcd) of R/G/B LEDs are the same and I (Rext) = 4mA, we may ideally let

G

GREEN + GRED + GBLUE = C (Constant value) to get a stable brightness.

For instance, while C = 10, that is GGREEN +GRED + GBLUE = 10, MB1009 can easily give system designers a wide

range of color and brightness control in portable electronic devices.

(GGREEN, GRED, GBLUE) (0, 6, 4)

(0, 5, 5)

Total 26 color Combinations

(1, 6, 3)

(1, 5, 4)

(1, 4, 5)

(2, 6, 2)

(2, 5, 3)

(2, 4, 4)

(2, 3, 5)

(3, 6, 1)

(3, 5, 2)

(3, 4, 3)

(3, 3, 4)

(3, 2, 5)

(4, 6, 0)

(4, 5, 1)

(4, 4, 2)

(4, 3, 3)

(4, 2, 4)

(4, 1, 5)

(5, 5, 0)

(5, 4, 1)

(5, 3, 2)

(5, 2, 3)

(5, 1, 4)

(5, 0, 5)

Package Outline

MBI1009 Package Information

Device Type

Package Type Weight (g)

CP SSOP16-150-0.64 0.07

Note: The unit for the outline drawings is mm.

MBI1009CP Outline Drawing