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PDF BD6583MUV-A Data sheet ( Hoja de datos )
| Número de pieza | BD6583MUV-A | |
| Descripción | 6-Channel White LED Driver | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Datasheet
6-Channel White LED Driver
for up to 72 LEDs
BD6583MUV-A
General Description
BD6583MUV-A is white LED driver IC with PWM
step-up DC/DC converter that can boost max 42.5V
and current driver that can drive max 25mA. The wide
and precision brightness can be controlled by external
PWM pulse. BD6583MUV-A has very accurate current
drivers, and it has few current errors between each
strings. So, it will be helpful to reduce brightness spots
on the LCD. Small package type is suited for saving
space.
Key Specifications
Operating power supply voltage range: 2.7V to 22.0V
LED Maximum Current:
25mA (Max.)
Quiescent Current 1:
0.6μA (Typ.)
Quiescent Current 2:
4.6μA (Typ.)
Operating temperature range:
-30 to +85
Package W(Typ.) x T(Typ.) x H(Max.)
Features
High efficiency PWM step-up DC/DC converter
(fsw=1MHz), max efficiency 93%
High accuracy & good matching (±3%) current
drivers 6ch
Drive up to 12* in series, 6 strings in parallel =72
white LEDs (*white LED Vf=3.5Vmax)
Rich safety functions
▪ Over-voltage protection (OVP)
▪ Over current limit
▪ External SBD open detect
▪ Thermal shutdown
VQFN024V4040
4.00mm x 4.00mm x 1.00mm
Figure 1. Package
Applications
All middle size LCD equipments backlight of Notebook
PC, portable DVD player, car navigation systems, etc.
Typical Application Circuit
Battery
10μF
4.7μH
2.2μF
RTR020N05
100mΩ
Power
ON/OFF
200Hz
PWM
1μF
SW
SENSP
FAILSEL VDET
SENSN
RSTB BD6583MUV-A
PWMPOW
PWMDRV
VBAT
VREG
LED1
LED2
LED3
LED4
LED5
GNDGNDGNDGNDTEST ISETHISETLLED6
24kΩ
10LED x 6parallel
Each 20mA
Figure 2F. iTgyuprieca2l.ATpyppliiccaaltiAopnpCliciractuioitn Circuit
Product structure Silicon monolithic integrated circuit
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 14 001
This product is not designed protection against radioactive rays
1/32
TSZ02201-0G3G0C400180-1-2
03.Dec.2012 Rev.001
1 page  
BD6583MUV-A
Block Diagram
Datasheet
RSTB
PW MPOW
FA ILS EL
SW
SE NSP
S ENS N
V BAT
VR EG
300kΩ
500 kΩ
REG
TSD
V IN detector
Internal P ower sup lly
S BD Open protect
+
-
UVLO
300 kΩ
1M Ω
S
QR
10 0K Ω Curre nt
S en ce
over voltage protect +
-
C ontrol
se nce
PW Mcomp
-
+
+
ERRA MP-
-
-
-
-
-
+
O SC
T ES T
PW M DRV
ISE TH
IS ETL
LE D TERM INA L
D etec t
10 0kΩ
30 0kΩ
IS E T H
Resisto r driver
IS E T L
Resisto r driver
LED TE RM INA L
Over Voltag e P ro tect
PW MDRV=H
On
PW MDRV=L
On
+
-
Current Driver
G ND G ND G ND GN D
VDE T
LED 1
LE D2
LED 3
LE D4
LE D5
LE D6
Pin number 23pin
Figure 4. Block diagram
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 15 001
5/32
TSZ02201-0G3G0C400180-1-2
03.Dec.2012 Rev.001
5 Page 
BD6583MUV-A
Typical Performance Curves - Continued
Datasheet
Figure 25. Line Transient (22V to 10V)
Figure 26. VOUT@OVP(LED OPEN)
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 15 001
11/32
TSZ02201-0G3G0C400180-1-2
03.Dec.2012 Rev.001
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet BD6583MUV-A.PDF ] | |
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