|
|
BD9397EFVのメーカーはROHM Semiconductorです、この部品の機能は「LED Drivers」です。 |
部品番号 | BD9397EFV |
| |
部品説明 | LED Drivers | ||
メーカ | ROHM Semiconductor | ||
ロゴ | |||
このページの下部にプレビューとBD9397EFVダウンロード(pdfファイル)リンクがあります。 Total 30 pages
Datasheet
LED Drivers for LCD Backlights
White LED Driver for large LCD
panel
BD9397EFV
●General Description
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.
●Key Specification
Operating power supply voltage range: 9.0V to 35.0V
Oscillator frequency:
500kHz (RT=30kΩ)
Operating Current:
9mA (typ.)
Operating temperature range:
-40°C to +85°C
●Applications
TV, Computer Display, Notebook, LCD Backlighting
●Typical Application Circuit
Vin Cin
VCC
VCC
STB
CVCC
FAIL_MODE
FAIL_RST
RT
SS
REG9V UVLO
VREG
UVLO
(VCC)
UVLO TSD
OVP SCP
OSC
SS
PROTECTION
Logic
PWM
COMP
++
-
-
Control
Logic
Filter
REG9V
Current
Sense
DRIVER
REG9V
OVP
FAIL
CP
N
PGND
CS
FB
RFB
CFB LED_LV
REG9V
LSP
ERR
AMP ----
-
+
OPEN/SHORT
Detect
M_DET
LED1
+
-
S1
VREF
PWM1
1/5
+
-
PWM6
AGND
AGND
LED6
+
-
S6
N.C.
Figure 1. Typical Application Circuit
+Cout
●Features
■ 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)
●Package
HTSSOP-B40
Pin Pitch:
W(Typ.) D(Typ.) H(Max.)
13.60mm x 7.80mm x 1.00mm
0.65mm
Figure 2. HTSSOP-B40
○Product structure:Silicon monolithic integrated circuit
.www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product has not designed protection against radioactive rays
1/27
TSZ02201-0F1F0C100330-1-2
9.Jan.2014 Rev.001
http://www.Datasheet4U.com
1 Page BD9397EFV
Datasheet
●1.1 Electrical Characteristics 1(Unless otherwise specified, Ta=25°C,VCC=24V)
Parameter
Symbol
Min.
Limit
Typ.
Max.
【Whole device】
Operating circuit current
ICC - 9 16
Stand-by circuit current
【REG9V block】
REG9V output voltage
Maximum REG9V output current
【Switching block】
ISTB
REG9V
IREG9V
N terminal source resistance
RONH
N terminal sink resistance
RONL
【Over current protection (OCP) block】
Over current protection voltage
【Soft-start block】
VOCP
SS terminal source current
ISS
SS terminal release voltage
【Error amplifier block】
VSS
LED control voltage
VLED
FB sink current
IFBSINK
FB source current
IFBSOURCE
LED_LV terminal input current
【CT oscillator block】
ILED_LV
Oscillation frequency
FCT
MAX DUTY
DMAX
【Over voltage protection (OVP) block】
OVP detection voltage
VOVP
OVP hysteresis voltage
VOVPHYS
-
8.9
20
-
-
0.40
-1.4
2.9
0.66
55
-155
-2
440
78
2.34
10
12
9.0
-
2.5
3.0
0.45
-1.0
3.0
0.7
100
-100
0
500
84
2.43
50
20
9.1
-
3.5
4.2
0.50
-0.6
3.1
0.74
155
-55
2
560
91
2.52
100
OVP feedback voltage
FBOVP
【Short current protection (SCP) block】
Short circuit protection voltage
【M_LED block】
VSCP
Diode forward voltage
VFLED
Forward voltage offset each ch
VFOFFSET
REG9V pull up resistance
RM_DET
0.93
0.12
1120
-
60
1.05
0.20
1340
-
100
1.17
0.28
1560
20
140
Unit Condition
mA
STB=3V,LED1-6=ON,
RT=30kΩ
μA STB=0V
V IO=0mA
mA
Ω ION=-10mA
Ω ION=10mA
V VCS=SWEEP UP
μA
V SS=SWEEP UP
V LED_LV=0.7V
μA LED=2.0V, VFB=1.0V
μA LED=0V, VFB=1.0V
uA VLED_LV=3V
kHz RT=30kΩ
%
V VOVP=SWEEP UP
mV VOVP=SWEEP DOWN
V
PMW1-6=0V,SS=2.8V,
VLED_LV=0.7V
V VOVP=SWEEP DOWN
mV VLED=0V
mV VLED=0V
kΩ
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
3/27
TSZ02201-0F1F0C100330-1-2
9.Jan.2014 Rev.001
http://www.Datasheet4U.com
3Pages BD9397EFV
●1.4.1 I/O equivalence circuit
REG9V / N / PGND / CS
SS
Datasheet
FB
FB
LED1 to LED6, S1 to S6
LED1-6
S1-6
CP
CP
PWM1 to PWM6
PWM1-6
300k
OVP
VREF
VREF
FAIL
FAIL
500
STB
STB
1M
FAIL_MODE / FAIL_RST
UVLO
LSP,LED_LV
LSP
RT
RT
M_DET
Figure 5. I/O equivalence circuit
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
6/27
TSZ02201-0F1F0C100330-1-2
9.Jan.2014 Rev.001
http://www.Datasheet4U.com
6 Page | |||
ページ | 合計 : 30 ページ | ||
|
PDF ダウンロード | [ BD9397EFV データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
BD9397EFV | LED Drivers | ROHM Semiconductor |