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BD9483F 데이터시트 PDF




ROHM Semiconductor에서 제조한 전자 부품 BD9483F은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


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부품번호 BD9483F 기능
기능 White LED Driver
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BD9483F 데이터시트, 핀배열, 회로
Datasheet
LED Drivers for LCD Backlights
White LED Driver for large LCD
Panels (DCDC Converter type)
BD9483F,FV
General Description
BD9483F,FV is a high efficiency driver for white LEDs
and designed for large LCDs. This IC is built-in 2ch
boost DCDC converters that employ an array of LEDs
as the light source. BD9483F,FV has some protect
function against fault conditions, such as the
over-voltage protection (OVP), the over current limit
protection of DCDC (OCP), Max duty protection, LED
OCP protection. Therefore BD9483F,FV is available for
the fail-safe design over a wide range output voltage.
Key Specification
Operating power supply voltage range:11.0V to 35.0V
Oscillator frequency:
150kHz (RT=100k)
Operating Current:
3mA (typ.)
Operating temperature range:
-40°C to +85°C
Applications
TV, Computer Display, Notebook, LCD Backlighting
Features
2ch boost DCDC converter with current mode
LED protection circuit (Max duty protection, LED
OCP protection)
Over-voltage protection (OVP) for the output
voltage Vout
Adjustable soft start
The wide range of analog dimming 0.2V-3.0V
2ch independent PWM dimming input
The UVLO detection for the input voltage of the
power stage
FAIL logic output
Package
SOP-24:
Pin Pitch:
W(Typ.) D(Typ.) H(Max.)
15.00mm x 7.80mm x 2.01mm
1.27mm
Typical Application Circuit
VCC
VIN
VOUT1
VOUT2
REG90
STB
RT
Css SS
Ccp CP
FAILB
PWM1
PWM2
ADIM
VCC
VREG
UVLO
VCC
UVLO
UVLO
TSD
OVP
OVP
REG90
UVLO
OSC
SS
SS-FB
clamper
Fail
detect
PWM
COMP
CONTROL
LOGIC
Current
compensation
REG90
GATE1
CS1
LEB
PGND1
REG90
DIMOUT1
MAXFB
LEDOCP
ERROR
amp
1.0V
ISENSE1
FB1
Each channel
GATE2
CS2
1/3 PGND2
DIMOUT2
ISENSE2
FB2
Figure 1. Typical Application Circuit
Figure 2-1. SOP-24
SSOP-B24:
Pin Pitch:
W(Typ.) D(Typ.) H(Max.)
7.80mm x 7.60mm x 1.35mm
0.65mm
Figure 2-2. SSOP-B24
Product structureSilicon monolithic integrated circuit
.www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product is not designed protection against radioactive rays
1/29
TSZ02201-0F1F0C100100-1-2
28.Nov.2013 Rev.003
Free Datasheet http://www.datasheet4u.net/




BD9483F pdf, 반도체, 판매, 대치품
BD9483F,FV
Datasheet
1.2 Electrical Characteristics 2(Unless otherwise specified, Ta=25°CVCC=24V)
Parameter
Symbol
Min.
Limit
Typ.
Max.
LED protection block
LED OCP detect voltage
VLEDOCP
2.88
3.0
3.12
MAX duty detect voltage
Dimming block
VFBMAX 3.84 4.0 4.16
ADIM pin leak current
ILADIM -2 0
2
ISENSE pin leak current
IL_ISENSE
-2
0
2
DIMOUT source on-resistance
RONSO
4.0 8.0 16.0
DIMOUT sink on-resistance
REG90 block
RONSI
2.5 5.0 10.0
REG90 output voltage
VREG90
8.91 9.00 9.09
REG90 available current
|IREG90|
15
-
-
REG90_UVLO detect voltage
REG90_TH
5.4
6.0
6.6
REG90_UVLO hysteresis
REG90_HYS
250
500
750
REG90 discharge resistance
STB block
REG90_DIS
325
500
675
STB pin HIGH voltage
STBH
2.0 -
35
STB pin LOW voltage
STBL
-0.3 -
0.8
STB pull down resistor
PWM block
ISTB
600
1000
1400
PWMx pin HIGH Voltage
PWM_H
2.0
-
5.5
PWMx pin LOW Voltage
PWM_L
-0.3
-
0.8
PWMx pin Pull Down resistance
FAIL block (OPEN DRAIN)
RPWM
600
1000
1400
FAILB pin on-resistance
RFAIL
250 500 1000
FAILB pin leak current
ILFAIL
-2 0
2
CP detect voltage
VCP
2.85 3.0 3.15
CP charge current
ICP 2.7 3.0 3.3
Unit Condition
V VISENSE=SWEEP UP
V VFB=SWEEP UP
μA VADIM=2.0V
μA VISENSE=4V
ION=-10mA
ION=10mA
V IO=0mA,VCC>11V
mA
V REG90=SWEEP DOWN
VSTB=H->L,
mV REG90=SWEEP UP
VSTB=H->L,
kREG90=9.0V
V VSTB=SWEEP UP
V VSTB=SWEEP DOWN
kVSTB=3.0V
V VPWM=SWEEP UP
V VPWM=SWEEP DOWN
kVPWM=3.0V
VFAIL=1.0V
μA VFAIL=15V
V VCP=SWEEP UP
μA
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
4/29
TSZ02201-0F1F0C100100-1-2
28.Nov.2013 Rev.003
Free Datasheet http://www.datasheet4u.net/

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BD9483F 전자부품, 판매, 대치품
BD9483F,FV
1.5 Typical Performance Curves (Reference data)
5
4
3
2
1
0
10
STB=5V
PWM1=PWM2=0V
Ta=25°C
14 18 22 26 30
VCC [V]
Figure 7. Circuit current
(operating mode)
34
100
10
1
0.1
0.01
0.001
10
Datasheet
VCC=24V
Ta=25°C
100
RT [kohm]
Figure 8. fCT v.s. RT
1000
160
140
120
100
80
60
40
20
0
0.5
VCC=24V
Ta=25°C
1.5 2.5
FB [V]
3.5
Figure 9. FB sink current v.s. FB voltage
0
-20
-40
-60
-80
-100
-120
-140
-160
0.5
VCC=24V
Ta=25°C
1.5 2.5
FB [V]
3.5
Figure 10. FB source current v.s. FB voltage
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
VCC=24V
Ta=25°C
12
ADIM [V]
3
Figure 11. ISENSE feedback voltage v.s. ADIM
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
7/29
TSZ02201-0F1F0C100100-1-2
28.Nov.2013 Rev.003
Free Datasheet http://www.datasheet4u.net/

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관련 데이터시트

부품번호상세설명 및 기능제조사
BD9483F

White LED Driver

ROHM Semiconductor
ROHM Semiconductor
BD9483FV

White LED Driver

ROHM Semiconductor
ROHM Semiconductor

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