BD6076GUT Datasheet, PDF (11/16 Pages) Rohm – White Backlight LED Drivers for Small to Medium LCD Panels (Switching Regulator Type)

BD6076GUT
Technical Note
●Selection of external parts
Recommended external parts are listed as below.
When to use other parts than these, select the following equivalent components.
・Coil
Value Tolerance Manufacturer
Product number
Vertical
size
Size
Horizontal
size
Height
22µH
±20%
MURATA
LQH3NPN220MGOL
3.0
3.0
0.9
10µH
±20%
MURATA
LQH3NPN100MGOL
3.0
3.0
0.9
22µH
±20%
TDK
VLF3010ST220M
2.8
3.0
1.0
10µH
±20%
TDK
VLF3010ST100M
2.8
3.0
1.0
22µH
±20%
TOKO
DB3015C220M
2.6
2.8
1.5
10µH
±20%
TOKO
DB3015C100M
2.6
2.8
1.5
22µH
±20%
Taiyo Yuden
NR3010T220M
3.0
3.0
1.0
10µH
±20%
Taiyo Yuden
NR3010T100M
3.0
3.0
1.0
22µH
±20%
Panasonic
ELLVEG220NN
3.0
3.0
0.9
10µH
±20%
Panasonic
ELLVEG100NN
3.0
3.0
0.9
Please refer to the reference data of p.4 for the change in the efficiency when the coil is changed.
DCR
(Ω)
1.10
0.57
0.90
0.49
0.60
0.29
1.24
0.54
1.44
0.48
・Capacitor
Value
Manufacturer
【 CIN 】
1µF
4.7µF
【 COUT 】
1µF
4.7µF
MURATA
MURATA
MURATA
MURATA
Product number
GRM188B11A105K
GRM21BB31A475K
GRM188B31E105K
GRM21BB31E475K
Vertical
size
Size
Horizontal
size
Height
1.6
0.8
0.8
2.0
1.25
1.25
1.6
0.8
0.8
2.0
1.25
1.25
Temperature
range
-25℃~+85℃
-25℃~+85℃
-25℃~+85℃
-25℃~+85℃
・Resistor
Value Tolerance Manufacturer
Product number
【 R_FB 】
24Ω
±1%
ROHM
MCR006YZPF□□□□
Value □□□□
15Ω 15R0
24Ω 24R0
33Ω 33R0
Vertical
size
Size
Horizontal
size
Height
0.6
0.3
0.23
The coil is the component that is most influential to efficiency. Select the coil which direct current resistor (DCR) and current
- inductance characteristic are excellent. Select a capacitor of ceramic type with excellent frequency and temperature
characteristics. Further, select Capacitor to be used for CIN/COUT with small direct current resistance, and pay much
attention to the PCB layout shown in the next page.
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11/15
2011.12 - Rev.A