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BD9217F Datasheet, PDF (2/5 Pages) Rohm – Silicon Monolithic Integrated Circuit | |||
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âElectric Characteristicsï¼Ta=25âï¼VCC=12Vï¼
Parameter
Symbol
MIN.
ï¼ï¼WHOLE DEVICEï¼ï¼
Operating current
Stand-by current
ï¼ï¼STAND BY CONTROLï¼ï¼
Stand-by voltage H
Stand-by voltage L
Icc1
Icc2
VstH
VstL
ï¼
ï¼
2.0
ï¼0.3
ï¼ï¼UVLO BLOCKï¼ï¼
Operating voltage (VCC)
Hesteresis width (VCC)
Operating voltage (UVLO)
Hesteresis width (UVLO)
ï¼ï¼REG BLOCKï¼ï¼
REG output voltage
Vuvlo
â¿Vuvlo
Vvlo_u
â¿Vvlo_u
VREG
6.65
0.37
2.4
0.075
7.35
REG source current
IREG
20
ï¼ï¼SOFT START BLOCKï¼ï¼
Soft start current
SS_COMP detect voltage
ï¼ï¼OSC BLOCKï¼ï¼
Iss
1.5
VSS
2.3
RT Output Voltage
VRT
1.05
STR ON Resistor value
ï¼ï¼BOSC BLOCKï¼ï¼
BOSC Max voltage
BOSC Min voltage
BOSC constant current
BOSC frequency
RSRT
VBCTH
VBCTL
IBCT
FBCT
-
1.94
0.40
1.35/BRT
291
ï¼ï¼FEED BACK BLOCKï¼ï¼
IS threshold voltage
VS threshold voltage
IS source current 1
IS source current 2
Vis
1.225
Vvs
1.220
Iis1
ï¼
Iis2
40
VS source current
Ivs
ï¼
IS COMP detect voltage
ï¼ï¼OUTPUT BLOCKï¼ï¼
N output sink resistance
N output source resistance
P output sink resistance
P output source resistance
VISCOMP
0.64
Rsink_N
1.8
Rsource_N
4.5
Rsink_P
1.8
Rsource_P
4.5
Drive output frequency
MAX DUTY
OFF period
ï¼ï¼ CT SYNCHRONOUS BLOCK ï¼ï¼
Input High voltage range
Fout
57.9
MAX DUTY
-
TOFF
100
VCT_CLKIN_H
2.5
Input Low voltage range
VCT_CLKIN_L
-0.3
ï¼ï¼FAIL BLOCKï¼ï¼
FAIL High voltage
FAIL Low voltage
ï¼ï¼SEL BLOCKï¼ï¼
Input High voltage range
VFAIL_H
2.95
VFAIL_L
-0.3
VSEL_H
5.0
Input Low voltage range
VSEL_L
-0.3
ï¼ï¼TIMER LATCH BLOCKï¼
CP timer latch detect voltage
CP timer latch charge current
ï¼ï¼COMP BLOCKï¼ï¼
COMP over voltage detect voltage
VCP
1.91
ICP
0.85
VCOMP
3.88
Hysteresis width ï¼COMPï¼
â¿Vcomp
0.138
(This product is not designed to be radiation-resistant.)
2/4
Limits
TYP.
8.0
10
-
-
7.00
0.50
2.5
0.100
7.50
ï¼
2.0
2.5
1.50
100
2.00
0.50
1.50/BRT
300
1.250
1.250
ï¼
50
ï¼
0.66
3.5
9.0
3.5
9.0
60.0
48.0
200
ï¼
ï¼
3.1
-
-
-
2.00
1.05
4.00
0.185
MAX.
16
30
VCC
0.8
7.35
0.63
2.6
0.125
7.65
ï¼
2.5
2.7
1.95
200
2.06
0.60
1.65/BRT
309
1.275
1.280
0.9
60
0.9
0.68
7.0
18.0
7.0
18.0
62.1
-
400
5.0
0.5
3.25
0.3
15
0.3
2.09
1.25
4.12
0.232
Unit
Conditions
mA
FOUT=60kHz, FB=GND
uA
V
System ON
V
System OFF
V
V
V
V
V
VCC > 8.5V
mA
Source current
uA
V
V
Ω
V
fBCT=0.3kHz
V
fBCT=0.3kHz
A
Hz
(BRT=36.2KΩ, BCT=0.047uF)
V
V
uA
DUTY=2.0V
uA
DUTY=0V, IS=1.0V
uA
V
Ω
Ω
Ω
Ω
kHz
RT=28.5kΩ, FB=0V
%
FOUT=60kHz
ns
V
V
V
V
V
V
V
uA
V
VSS > 2.4V
V
REV. C
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