BD9275F Datasheet, PDF (2/5 Pages) Rohm – Silicon Monolithic Integrated Circuit

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○Electric Characteristics（Ta=25℃、VCC=12V、STB=3.0V）
Item
(（WHOLE DEVICE）)
SYMBOL
MIN.
Operating current
Icc1
－
Stand-by current
Icc2
－
((STAND BY CONTROL））
Stand-by voltage H
VSTBH
2
Stand-by voltage L
VSTBL
-0.3
STB PIN pull down resistor
RSTB
180
（（VCC UVLO BLOCK）））
Operating voltage
Hesteresis width
（（OSC BLOCK））
VCC_UVLO
7.2
⊿UVLO_HYS
0.3
RT pin Voltage
SRT ON resistance
((PWM Dimming Block))
PWM_IN PIN voltage H
PWM_IN PIN voltage L
PWM_IN PIN pull down resistor
（（FEED BACK BLOCK））
VRT
RSRT
VPWMIN_H
VPWMIN_L
R_PWMIN
1.300
－
2.4
-0.3
1000
IS threshold voltage
VIS
VS threshold voltage
VVS
IS source current
IIS
IS COMP detect voltage
VISCOMP
（（SLOW START BLOCK））
SS term END Voltage
VSS
Soft start current
ISS
（（COMP BLOCK））
COMP over voltage
detect voltage
VCOMPH
Hysterisis width (COMP)
⊿VCOMPH
COMP PIN pull down resistor
RCOMP
FAIL ON resistance
RFAIL
（（OUTPUT BLOCK））
N1,N2 PIN output
sink resistance
N1,N2 PIN output
source resistance
RsinkN
RsourceN
MAX DUTY
MAX DUTY
Drive output frequency
FOUT
（（TIMER BLOCK））
1.225
1.200
16
0.565
2.400
1.7
1.900
0.100
1000
－
1.5
4.5
45
48.25
Timer Latch setting voltage
VCP
2.900
Timer Latch setting current
ICP
1.7
（This product is not designed to be radiation-resistant.）
LIMIT
TYP.
2.0
0
-
-
375
7.5
0.5
1.500
75
-
-
2000
1.250
1.250
20
0.625
2.500
2.0
2.000
0.200
2000
75
3.0
9
47.0
50
3.000
2.0
MAX.
4.0
20
VCC
0.8
750
7.8
0.7
1.700
150
5
0.8
4000
1.275
1.300
24
0.685
2.600
2.3
2.100
0.300
4000
150
6.0
18
49.5
51.75
3.100
2.3
UNIT
CONDITION
mA RT=100kΩ, FB=GND, IS=1.5V
μA VSTB=0V
V
System ＯＮ
V
System ＯＦＦ
kΩ VSTB=2V
V
VCC=6V→8V sweep
V
VCC=8V→6V sweep
V
RT=100kΩ
Ω VSRT=0.1V
V
VPWM_IN=0V⇒3.0V
V
VPWM_IN=3.0V⇒0V
kΩ VPWM_I=5V
V
V
μA IS=1.0V
V
IS=1.3V→0.5V
V
VSS=0V⇒3V
μA VSS=1.0V IS=1.5V
V
VSS＞2.5V VCOMP=1.5V→2.5V
V
VSS＜2.0V VCOMP=2.5V→1.5V
kΩ COMP=5V
Ω VFAIL=0.1V
Ω IIN=100mA
Ω IIN=-100mA
%
FOUT=50kHz
kHz RT=100kΩ
V
VCP=0V⇒3.2V
μA CP=1.0V IS=1.5V COMP=3.0V
REV. B