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BD9423EFV PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 BD9423EFV
기능 6ch boost LED driver
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BD9423EFV 데이터시트, 핀배열, 회로
Datasheet
LED Drivers for LCD Backlights
6ch boost LED driver which constant setting
can be shared by I2C control
BD9423EFV
1.1 General Description
BD9423EFV is a high efficiency driver for white LEDs
and designed for large LCD panel. This IC is built-in high
current drive and high responsibility type 6ch LED
drivers and 1ch boost DCDC converter. BD9423EFV has
some protect function against fault conditions, such as
the over-voltage protection (OVP), LED OPEN and
SHORT protection, the over current limit protection of
DCDC (OCP). Therefore BD9423EFV is available for the
fail-safe design over a wide range output voltage.
Moreover the functions and the detection voltage can be
controlled by the I2C. This enables for the constant
setting of external parts to be shared by I2C control,
nevertheless the different usage condition.
Features
Operating power supply voltage range:9.0V to 35.0V
Oscillator frequency:
200kHz (RT=100k)
Operating Current:
9mA (typ.)
Operating temperature range:
-40°C to +85°C
Key Specifications
LED drivers Max curret
400mA per channel
Constant current accuracy
±1.8% (IC only)
Current analog (linear) dimming by ADIM pin
Several protection functions
DCDC part
: OCP/OVP/UVLO
LED driver part :OPEN,SHORT detection
SHORT detection voltage is set by LSP pin
Error detection output by FAIL pin
Master/Slave mode inside
1.2 Package
HTSSOP-B40:
Pin Pitch:
W(Typ) x D(Typ) x H(Max)
13.60mm x 7.80mm x 1.00mm
0.65mm
Applications
TV, Computer Display, Notebook, LCD Backlighting
Typical Application Circuit
Figure 1. HTSSOP-B40
Figure 2. Typical application circuit
Product structure : Silicon monolithic integrated circuit
.www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
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This product has no designed protection against radioactive rays
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BD9423EFV pdf, 반도체, 판매, 대치품
BD9423EFV
1.6 Absolute maximum ratings(Ta = 25°C)
Parameter
Power supply voltage
Power dissipation
Junction temperature range
Operation temperature range
Storage temperature range
Maximum LED output current
Symbol
VCC
Pd
Tjmax
Topr
Tstg
ILED
Rating
-0.336
4.7(Note1)
-40 +150
-40+85
-55+150
400(Note2)(Note3)
Datasheet
Unit
V
W
°C
°C
°C
mA
No. Pin
Rating [V]
No.
Pin
Rating [V]
1 VCC
-0.3~36
40
AGND
-
2 FAIL
-0.3~36
39
UVLO
-0.3~10.5
3 REG9V
-0.3~13
38
LSP
-0.3~7
4 N.C.
- 37 LED_LV
-0.3~7
5N
-0.3~13
36
ADIM_P
-0.3~20
6 PGND
- 35 ADIM
-0.3~20
7 CS
-0.3~7
34
RT
-0.3~7
8 OVP
-0.3~7
33
FB
-0.3~7
9 FAIL_MODE
-0.3~7
32
SS
-0.3~7
10 AGND
- 31 CP
-0.3~7
11 LED1
-0.3~60
30
S1
-0.3~7
12 LED2
-0.3~60
29
S2
-0.3~7
13 LED3
-0.3~60
28
S3
-0.3~7
14 LED4
-0.3~60
27
S4
-0.3~7
15 LED5
-0.3~60
26
S5
-0.3~7
16 LED6
-0.3~60
25
S6
-0.3~7
17 STB
-0.3~36 24 FAIL_RST
-0.3~22
18 DVDD
-0.3~4.0 23 SUMPWM
-0.3~7
19 SDA
-0.3~4.0
22
DGND
-
20 SCL
-0.3~4.0
21
PWM
-0.3~22
(Note1) In the case of mounting 4 layer glass epoxy base-plate of 70mm×70mm×1.6mm, 37.6mW is reduced at 1°C above Ta=25°C.
(Note2) Wide VF variation of LED increases loss at the driver, which results in rise in package temperature. Therefore, the board needs to be designed
with attention paid to heat radiation.
(Note3) This current value is per 1ch. It needs be used within a range not exceeding Pd.
Caution: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit
between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is operated over the
absolute maximum ratings.
1.7 Thermal Resistance(Note 1)
Parameter
Symbo
Thermal Resistance (Typ)
l 1 層基板(Note 3) 4 層基板(Note 4)
Unit
HTSSOP-B40
Junction to Ambient
θJA 99.8
26.0 °C/W
Junction to Top Characterization Parameter(Note 2)
ΨJT
5
2 °C/W
(Note 1)Based on JESD51-2A(Still-Air)
(Note 2)The thermal characterization parameter to report the difference between junction temperature and the temperature at the top center of the outside
surface of the component package.
(Note 3)Using a PCB board based on JESD51-3.
(Note 4)Using a PCB board based on JESD51-5, 7.
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© 2014 ROHM Co., Ltd. All rights reserved.
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TSZ02201-0F2F0C100080-1-2
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BD9423EFV 전자부품, 판매, 대치품
BD9423EFV
Datasheet
1.8 Electrical Characteristics 3/3 (unless otherwise specified, VIN=24V Tj=25°C)
Parameter
Symbol
Min
Typ Max Unit
Condition
STB block
STB pin HIGH voltage
VSTBH
2.0
-
18 V
STB pin LOW voltage
VSTBL
-0.3
-
0.8 V
STB pin pull-down Resistor
RSTB 0.6 1.0 1.4 MSTB=3.0V
PWM block
PWM pin HIGH voltage
VPWMH 1.5 - 20 V
PWM pin LOW voltage
VPWML -0.3 - 0.8 V
PWM pin pull-down Resistor
RPWM
180
300
420 kPWM=3.0V
Abnormality detection block
FAIL pin LOW output voltage
VFAILL
0.0
0.15
0.3 V IOL=500μA
FAIL_RST pin
Input HIGH voltage
VFAIL_INH 2.0 - 20 V
FAIL_MODE pin
Input HIGH voltage
VFAIL_INH 2.0 - 5.5 V
FAIL_MODE, FAIL_RST pin
Input LOW voltage
VFAIL_INL -0.3
-
0.8 V
FAIL_MODE, FAIL_RST pin
Input pull-down Resistor
RFAIL 60 100 140 kVIN=3.0V
CP detection voltage
VCP
2.91 3.0 3.09 V CP=SWEEP UP
CP source current
ICP -3.3 -3.0 -2.7 μA CP=0V
I2C block
SCL, SDA input HIGH voltage VI2C_INH 0.8*DVDD
-
3.6 V
SCL, SDA input LOW voltage
SCL, SDA input HIGH current
VI2C_INL
II2C_INH
-0.3
-
-
0.2*DVDD
V
- 10 μA DVDD=3.3V, VIN=3.3V
SCL, SDA input LOW current
II2C_INL
-10
-
- μA DVDD=3.3V, VIN=0V
L level SDA output
VSDA_OL
-
- 0.4 V
Master/Slave selection block
SUMPWM pin input HIGH
voltage
VSUM_INH 2.0
-
5.5 V
SUMPWM pin input LOW
voltage
VSUM_INL -0.3 - 0.8 V
SUMPWM pin pull-down Resistor
RSUM
60
100 140 kVIN=3.0V
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BD9423EFV

6ch boost LED driver

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