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BD9397EFV-E2

更新时间： 2024-12-01 01:14:11
品牌 Logo 应用领域
罗姆 - ROHM /
页数 文件大小 规格书
31页 1107K
描述
White LED Driver for large LCD panel

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BD9397EFV-E2 数据手册

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Datasheet  
LED Drivers for LCD Backlights  
White LED Driver for large LCD  
panel  
BD9397EFV  
●General Description  
●Features  
BD9397EFV 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. BD9397EFV  
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 BD9397EFV is  
available for the fail-safe design over a wide range  
output voltage.  
■ 6ch Constant LED drivers, available 400mA drive  
per 1ch.  
■
■
Constant current accuracy ±1.8% (IC only)  
Each 6ch external PWM inputs can control independent  
dimming .  
■
■
■
Current analog (linear) dimming by VREF  
1ch boost controller with current mode (external FET)  
Several protection functions  
DCDC part  
: OCP/OVP/UVLO/TSD  
LED driver part :OPEN,SHORT detection  
SHORT detection voltage is set by LSP terminal.  
Error detection output FAIL terminal inside  
(normal=Open, error=Drain)  
■
■
●Key Specification  
Operating power supply voltage range: 9.0V to 35.0V  
Oscillator frequency:  
Operating Current:  
500kHz (RT=30kΩ)  
9mA (typ.)  
Operating temperature range:  
-40°C to +85°C  
●Package  
W(Typ.) D(Typ.) H(Max.)  
13.60mm x 7.80mm x 1.00mm  
0.65mm  
●Applications  
HTSSOP-B40  
Pin Pitch:  
TV, Computer Display, Notebook, LCD Backlighting  
●Typical Application Circuit  
Vin  
Cin  
+
Cout  
REG9V  
UVLO  
OVP  
VCC  
VCC  
STB  
VREG  
UVLO  
(VCC)  
UVLO  
TSD  
OVP  
SCP  
CVCC  
FAIL_MODE  
FAIL  
CP  
PROTECTION  
Logic  
FAIL_RST  
Filter  
PWM  
REG9V  
COMP  
RT  
+
OSC  
SS  
+
-
-
N
Control  
Logic  
PGND  
SS  
DRIVER  
REG9V  
Current  
Sense  
CS  
M_DET  
LED1  
ERR  
AMP  
-
-
-
-
FB  
LED_LV  
REG9V  
LSP  
+
-
-
+
RFB  
CFB  
S1  
OPEN/SHORT  
Detect  
VREF  
1/5  
+
-
LED6  
S6  
+
-
PWM１  
PWM6  
Figure 2. HTSSOP-B40  
AGND  
AGND  
N.C.  
Figure 1. Typical Application Circuit  
○Product structure：Silicon monolithic integrated circuit ○This product has not designed protection against radioactive rays  
.www.rohm.com  
TSZ02201-0F1F0C100330-1-2  
1.Sep.2015 Rev.006  
© 2013 ROHM Co., Ltd. All rights reserved.  
1/27  
TSZ22111・14・001  
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