ROHM BD9206EFV Technical data
LED Driver Series for LCD Backlight
Simple Structure Constant Current
Backlight Driver for LCD panels
(Non-step type)
BD9206EFV
No.09040EAT03
●Description
BD9206EFV is an IC with a built-in 6ch high-accuracy (absolute accuracy:±4%) constant-current driver.
Capable of lighting a maximum of 36 white LEDs with 6 rows×6 lines.
Due to the wide input voltage range (8V~30V), it can be widely used from a backlights of Note PC and PDA etc. to LED light
sources of Scanner and PPC etc.
Moreover, it restrain the generation of heat at the time of large current drive because of adoption of high-heat-radiation
package(HTSSOP-B20).
●Features
1) A wide input voltage range（8V～30V）
2) Capable of driving a maximum of 36 white LEDs of 6 series×6 parallel
3) Value of constant current is set by the VSET terminal
4) Due to the STBY terminal, the consumption current at the time of standby is low
5) PWM dimming is possible due to the clock input to the EN terminal
6) Built-in 5V regulator
7) High-heat-radiation package of HTSSOP-B20 6.4×6.5×0.85mm
●Applications
For use in LED light source of PPC and Scanner etc., LED lighting fixture, and LCD backlight lights of monitor
and note PC etc.
●Absolute maximum ratings（Ta＝25℃）
Item Symbol Rating Unit
Power Supply Voltage Vcc 36 V
V
LED output voltage
Power Dissipation Pd 3.2
Operational Temperature Range
Storage Temperature Range Tstg -55～+150 ℃
LED Maximum Current
*1 Reduce with 25.6mW at 1℃ if Ta= 25℃ or above at the time of mounting a base-plate of glass
epoxy in 4 layer of 70mm×70mm×1.6mm.
*2 It is value per LED driver 1ch.
Please set inside the range which does not exceed the allowable loss value of the package.
LED 28 V
Topr -40～+85 ℃
I
LED 30
*1
W
*2
mA
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© 2009 ROHM Co., Ltd. All rights reserved.
2009.07 - Rev.A
BD9206EFV
●Recommended Operational condition（Ta=25℃）
Item
Power Supply Voltage
EN terminal clock input possible range VENCLK 100～10000 Hz
VSET input possible range VSET 0.6～3 V
Applied voltage range for LED terminal VLED 0.6～28 V
●Electrical Characteristics（Unless specified, Ta=25℃,Vcc=24V）
Item Symbol
【Whole】
Circuit electric current
when OFF
Circuit electric current
when stand by
Circuit electric current
when operating
【LED Driver 1~6】
IOFF - 17 28 μA STBY=L, EN=L, TEST=L
ST - 1.8 3.6 mA STBY=H, EN=L, TEST=L
I
ICC - 2.5 5.0 mA STBY=H, EN=H, TEST=L
Symbol Rating Unit
Vcc 8～30 V
Ratings
Min.
Typ.
Technical Note
Unit Conditions
Max.
Output current ILED 19.2 20.0 20.8 mA VSET=2.0V, VLED=1V
Leak electric current
when OFF
Influx electric current to
VSET terminal
【VREG】
Output voltage VREG 4.7 5.0 5.3 V Io=1mA
Output current IOMAX 10 30 - mA Vo=VREG×0.9
【UVLO】
Detection voltage VUVREG 2.4 2.9 3.4 V VREG fall down
Hysteresis voltage VUHYVREG 0.05 0.1 0.2 V VREG rise up
【STBY, EN, TEST】
Input Low level VIL -0.3 - 0.8 V
Input high level VIH 2.0 - Vcc V
Input current RPD 33 47 66 μA Vin=3V
It is not the radiation-proof design for this product.
ILEDLK - 0.0 5.0 μA VLED=26V
INVSET - -0.05 -0.10 μA VSET=2V
I
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© 2009 ROHM Co., Ltd. All rights reserved.
2009.07 - Rev.A
BD9206EFV
●Block diagram ●Package outline drawing
VCC
20
STBY
2
PREREG
AGND
100k
4
5VREG
Driver
Current
Setting
5VREG
EN
3
VSET
100k
PREREG
TSD
18
RSET
REF
5V
REG
UVLO
5VREG
ENH1
ISET1
5VREG
6
ISET2～5
4
Current
Driver
1
6
LED2～5
VREG
Vo
LED1
BD9206EFV
・・・・
ISET6
5VREG
・・・・ ・
LED6
15
PGND1～2
HTSSOP-B20（Unit：mm）
17
TEST
●Terminal placement diagram ●Terminal explanation
VREG
1
2
STBY
EN
3
4
AGND
5
PGND1
6
LED1
LED2
7
LED3
8
N.C.
9
N.C.
10
Fig..3
Fig..1 Fig..2
Terminal
VCC
20
19
N.C.
18
VSET
TEST
17
PGND2
16
15
LED6
LED5
14
13
LED4
12
N.C.
11
N.C.
number
Terminal
name
Function
Terminal
number
Terminal
name
1 VREG Power supply for internal circuit 11 N.C. (Not yet connected terminal)
2 STBY
Stand by terminal
(Low:OFF,High:stand by,
operation)
12 N.C. (Not yet connected terminal)
3 EN LED1～16 Enable terminal(Active:High) 13 LED4 Output terminal 4 for LED driver
4 AGND
GND for internal standard section 14 LED5 Output terminal 5 for LED driver
5 PGND1 POWER GND for LED driver 15 LED6 Output terminal 6 for LED driver
6 LED1
Output terminal 1 for LED driver 16 PGND2
7 LED2 Output terminal 2 for LED driver 17 TEST
8
9 N.C.
LED3 Output terminal 3 for LED driver 18 VSET
(Not yet connected terminal) 19 N.C. (Not yet connected terminal)
10 N.C. (Not yet connected terminal) 20 VCC Terminal of power supply
Technical Note
Lot No.
Function
Power GNDPOWER GND for LED
driver
Terminal for test mode shift
(Use at usual time：Low)
Standard voltage terminal for fixed
electric current setting
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© 2009 ROHM Co., Ltd. All rights reserved.
2009.07 - Rev.A
BD9206EFV
(
)
(
)
●Reference data(Unless specified,VCC=24V, Ta=25℃)
0.05
0.04
0.03
0.02
ICC [mA]
0.01
0.00
0 4 8 12162024283236
STBY=L
EN=L
VCC [V]
Fig..4-1 Circuit electric current
(at the time of OFF mode)
35
30
25
20
15
ILED [mA]
10
5
0
0 0.5 1 1.5 2 2.5 3 3.5
VSET [V]
Fig..4-4 VSET Constant electric
current Characteristics
10
9
8
7
6
5
4
VREG [V]
3
2
1
0
0 4 812162024283236
VCC [V]
Io=0mA
Fig..4-7 VREG_VCC characteristic
8
7
6
5
4
3
VRED [V]
2
1
0
0 0.5 1 1.5 2 2.5 3
VEN [V]
Fig..4-10 EN Threshold voltage
3.0
2.5
2.0
1.5
ICC [mA]
1.0
0.5
0.0
0 4 8 12 162024283236
Fig..4-2 Circuit electric current
at the time of stand bymode
32
28
24
20
16
12
ILED [mA]
8
4
0
0123456
Fig..4-5 VLED Dependency of ILED
5.5
5.4
5.3
5.2
5.1
5.0
4.9
VREG [V]
4.8
4.7
4.6
4.5
-40 -20 0 20 40 60 80 100
Fig..4-8 VREG temperature
VCC [V]
VSET [V]
TEMP [℃]
characteristic
Technical Note
5
STBY=H
EN=L
VSET=2V VSET=2V
Io=0mA
4
3
2
ICC [mA]
1
0
0 4 8 12162024283236
VCC [V ]
Fig..4-3 Circuit electric current
at the time of operatingmode
24
23
22
21
20
ILED [mA]
19
18
17
-40 -20 0 20 40 60 80 100
TEMP [℃]
Fig..4-6 Constant electric current
temperature characteristic
8
7
6
5
4
3
VREG [V]
2
1
0
0 0.5 1 1.5 2 2.5 3
VSTBY [V]
Fig..4-9 STBY Threshold voltage
STBY=H
EN=H
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© 2009 ROHM Co., Ltd. All rights reserved.
2009.07 - Rev.A
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