BD8179MUV-E2 Ver la hoja de datos (PDF) - ROHM Semiconductor
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BD8179MUV-E2 Datasheet PDF : 13 Pages
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BD8179MUV
Technical Note
●Electrical Characteristics (Unless otherwise specified, VIN = 3.3V; VSUP = 12 V; VGON = 25 V; VGOFF = -6V; Ta = 25℃)
1 DC/DC CONVERTER CONTROLLER BLOCK
Parameter
Limit
Symbol
Unit
Min.
Typ.
Max.
Conditions
[ ERROR AMPLIFIER BLOCK ]
FB Input Bias Current
IFB
-
0.1
-
µA
Feed Back Voltage
VFB
1.221
1.233
1.245
V
Buffer, No load
Comp Sink Current
Ioi
1
5
10
µA
VFB=1.5V VCOMP=0.5V
Comp Source Current
Ioo
-10
-5
-1
µA
VFB=1.0V VCOMP=0.5V
[ LX BLOCK ]
LX ON-Resistance
Ron
-
200
-
mΩ
LX Leak Current
Ileak
-
0
10
µA VLX=18V
MAX Duty Cycle
DMAX
-
90
-
%
LX Current Limit
ILX
2.5
-
-
A
[ INTERNAL SOFT START BLOCK ]
Soft Start Delay Time
tss
-
3.25
-
ms
2. GATE-ON LINEAR REGULATOR CONTROLLER
Parameter
Symbol
Min.
Limit
Typ.
Max.
Unit
Conditions
FBP Voltage
VFBP
1.225
1.25
1.275
V
FBP Input Bias Current
IFBP
-
0.1
-
µA
DRVP Current Limit
IDRVP
1
5
3. GATE-OFF LINEAR REGULATOR CONTROLLER
10
mA
Parameter
Symbol
Min.
Limit
Typ.
Max.
Unit
Conditions
FBN Voltage
VFBN
0.235
0.25
0.265
V
FBN Input Bias Current
IFBN
-
0.1
-
µA
DRVN Current Limit
IDRVN
1
4. OPERATIONAL AMPLIFIERS
5
10
mA
Parameter
Symbol
Min.
Limit
Typ.
Max.
Unit
Conditions
Input Offset Voltage
Voff
-
0
-
mV VPOS1～5 = 6V
Input Range
VRANGE
0
VSUP
V
DRIVE Current
Idrv
50
-
-
mA
Slew Rate
SR
-
40
-
V/us
5. GATE SHADING CONTROLLER BLOCK
Parameter
Limit
Symbol
Unit
Min.
Typ.
Max.
Conditions
DEL Start Period
tdd
-
15
-
ms
DEL Source Current
Idls
-8
-5
-2
µA
DEL Threshold Voltage
Vdls
1.2
1.25
1.3
V
CTL Input Low Voltage
Vctll
-
-
VIN x 0.3
V
CTL Input High Voltage
Vchlh VIN x 0.7
-
-
V
CTL Input Current
Ictl
8
16.5
25
µA
VCTL=3.3V
SRC ON Resistance
RonSRC
-
5
-
Ω
DRN ON Resistance
RonDRV
-
30
-
Ω
This product is not designed for protection against radioactive rays.
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© 2009 ROHM Co., Ltd. All rights reserved.
2/12
2009.07 - Rev.B
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