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BD9486F Datasheet(PDF) 3 Page - Rohm

Part # BD9486F
Description  1ch Boost up type White LED Driver for large LCD
PDF  38 Pages
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Manufacturer  ROHM [Rohm]
Direct Link  http://www.rohm.com
Logo ROHM - Rohm

BD9486F Datasheet(HTML) 3 Page - Rohm

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Datasheet
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TSZ02201-0F1F0C100240-1-2
© 2013 ROHM Co., Ltd. All rights reserved.
15.Feb.2016 Rev.006
www.rohm.com
TSZ22111・15・001
BD9486F
●1.9 Electrical Characteristics
(Unless otherwise specified, Ta=25°C，VCC=12V)
Parameter
Symbol
Limit
Unit
Condition
Min.
Typ.
Max.
【Total Current Consumption】
Circuit Current
Icc
－
2.6
5.2
mA
VSTB=3.0V, PWM=3.0V,
GATE=L,IREG50=0mA
Circuit Current (standby)
IST
－
40
80
μA
VSTB=0V
【UVLO Block】
Operation Voltage（VCC）
VUVLO_VCC
6.5
7.5
8.5
V
VCC=SWEEP UP
Hysteresis Voltage（VCC）
VUHYS_VCC
150
300
600
mV
VCC=SWEEP DOWN
UVLO Release Voltage
VUVLO
2.88
3.00
3.12
V
VUVLO=SWEEP UP
UVLO Hysteresis Voltage
VUHYS
250
300
350
mV
VUVLO=SWEEP DOWN
UVLO Pin Leak Current
UVLO_LK
-2
0
2
μA
VUVLO=4.0V
【DC/DC Block】
ISENSE Threshold Voltage 1
VLED1
0.225
0.233
0.242
V
VADIM=0.7V
ISENSE Threshold Voltage 2
VLED2
0.656
0.667
0.677
V
VADIM=2.0V
ISENSE Threshold Voltage 3
VLED3
0.988
1.000
1.012
V
VADIM=3.0V
ISENSE Clamp Voltage
VLED4
0.989
1.015
1.040
V
VADIM=3.3V
(at masked analog dimming)
Oscillation Frequency
FCT
142.5
150
157.5
KHz
RT=100kΩ
RT Short Protection Range
RT_DET
-0.3
-
VRT
×90%
V
RT=SWEEP DOWN
RT Terminal Voltage
VRT
1.6
2.0
2.4
V
RT=100kΩ
RT Pin ON Resistance at OFF
RRT_L
-
2.0
4.0
kΩ
At latch off
GATE Pin MAX DUTY Output
MAX_DUTY
90
95
99
%
RT=100kΩ
GATE Pin ON Resistance
(as source)
RONSO
2.5
5.0
10.0
Ω
GATE Pin ON Resistance
(as sink)
RONSI
2.0
4.0
8.0
Ω
SS Pin Source Current
ISSSO
-3.75
-3.0
-2.25
μA
VSS=2.0V
SS Pin ON Resistance at OFF
RSS_L
-
3.0
5.0
kΩ
Soft Start Ended Voltage
VSS_END
3.52
3.70
3.88
V
SS=SWEEP UP
FB Source Current
IFBSO
-115
-100
-85
μA
VISENSE=0.2V, VADIM=3.0V,
VFB=1.0V
FB Sink Current
IFBSI
85
100
115
μA
VISENSE=2.0V, VADIM=3.0V,
VFB=1.0V
OCP Detect Voltage
VCS
360
400
440
mV
CS=SWEEP UP
OCP Latch Off Detect Voltage
VCS
0.85
1.00
1.15
V
CS=SWEEP UP
【DC/DC Protection Block】
OVP Detect Voltage
VOVP
2.88
3.00
3.12
V
VOVP SWEEP UP
OVP Detect Hysteresis
VOVP_HYS
150
200
250
mV
VOVP SWEEP DOWN
OVP Pin Leak Current
OVP_LK
-2
0
2
μA
VOVP=4.0V, VSTB=3.0V



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