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Rohm

BD9275F Datasheet

Silicon Monolithic Integrated Circuit


BD9275F Datasheet Preview


1/4
STRUCTURE
NAME OF PRODUCT
Silicon Monolithic Integrated Circuit
DC-AC Inverter Control IC
TYPE
FUNCTION
BD9275F
・Using 20V process / 1ch control with Push-Pull
・Accuracy of drive output frequency:3.5%(IC Only/Built-in CT Capacitor)
・High accuracy timer latch current(±15%)
・Built-in FAIL function
・Adjustable latch timing
・Adjustable slow start time
・Lamp current and voltage sense feedback control
・Mode-selectable the operating or stand-by mode by STB pin (Typ.=0uA )
○Absolute Maximum Ratings(Ta = 25℃)
Parameter
Symbol
Limits
Unit
Supply Voltage
VCC 20
V
OUTPUT PIN Voltage
N1, N2
20
V
Operating Temperature Range
Topr
-40~+85
Storage Temperature Range
Tstg
-55~+150
Maximum Junction Temperature
Tjmax
+150
Power Dissipation
Pd SOP18:562* mW
*1Pd derate at -4.5mW/℃ for temperature above Ta = 25℃ (When mounted on a PCB 70.0mm×70.0mm×1.6mm)
〇動作範囲
項目
Supply voltage
Input Frequency Ratio PWM_IN PIN
DRIVER frequency
記号
VCC
F_PWM_IN
F_OUT
範囲
8.0 ~ 18.0
0.060~0.5
20 ~ 90
単位
V
kHz
kHz
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REV. B
Page 1

○Electric Characteristics(Ta=25℃、VCC=12V、STB=3.0V)
Item
((WHOLE DEVICE))
SYMBOL
MIN.
Operating current
Stand-by current
((STAND BY CONTROL))
Icc1
Icc2
Stand-by voltage H
Stand-by voltage L
STB PIN pull down resistor
((VCC UVLO BLOCK)))
VSTBH
VSTBL
RSTB
2
-0.3
180
Operating voltage
Hesteresis width
((OSC BLOCK))
VCC_UVLO
⊿UVLO_HYS
7.2
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.)
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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
2/4
REV. B
Page 2

〇Package Dimensions
MMAAXX1111..5555 ((iinncclluuddee.. BBUURRRR))
Device Name
BD9275F
Lot No.
3/4
SOP-16 (Unit:mm)
〇PIN No.・PIN NAME・FUNCTION
No. PIN
Function
1 VCC Supply voltage input
2 STB Stand-by switch
External resistor from SRT to RT for adjusting
3 SRT the triangle oscillator
External resistor from SRT to RT for adjusting
4 RT the triangle oscillator
5 GND GROUND
6 FB Error amplifier output
7 IS Error amplifier input
8 VS Error amplifier input
BD9275F
No. PIN
16 N1 NMOS FET driver
15 N2 NMOS FET driver
Function
14 PGND Ground for FET drivers
13 PWM_IN Dimming pulse signal input pin
12 SS External capacitor from SS to GND for Soft Start Control
11 CP External capacitor from CP to GND for Timer Latch
10 FAIL Error signal output pin
9 COMP Over voltage detect pin
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REV. B
Page 3
Part Number BD9275F
Manufactur Rohm
Description Silicon Monolithic Integrated Circuit
Total Page 5 Pages
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BD9275F datasheet
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