Linear Regulator. BD3985FV Datasheet

BD3985FV Regulator. Datasheet pdf. Equivalent

Part BD3985FV
Description Positive and Negative Variable Linear Regulator
Feature STRUCTURE Silicon Monolithic Integrated Circuit TYPE Positive and Negative Variable Linear Regula.
Manufacture Rohm
Datasheet
Download BD3985FV Datasheet



BD3985FV
STRUCTURE
Silicon Monolithic Integrated Circuit
TYPE
Positive and Negative Variable Linear Regulator
PRODUCT SERIES
BD3985FV
FEATURES
1. Built-in positive (REG1) and negative (REG2) Linear Regulator for CCDs/ Variable output/
Low saturation voltage type.
2. Built-in Discharge circuit. Negative output voltage (REG2) turns off immediately,
after STB turns off.
○ABSOLUTE MAXIMUM RATINGS (Ta=25℃)
Parameter
Symbol
Limit
Unit
Positive Supply Voltage
VCC
+18 ※1
V
Negative Supply Voltage
VEE
-18 ※1
V
Power Dissipation
Pd
380 ※2
mW
Operating Temperature Range
Topr
-40~+85
Storage Temperature Range
Tstg
-55~+125
Maximum Junction Temperature
Tjmax
125
※1 Not to exceed Pd.
※2 Reduced by 3.8mW/℃ over Ta=25℃ ,during IC without heat sink operation.
○OPERATING CONDITIONS
Parameter
Symbol
Min
Max Unit
Positive Supply Voltage
VCC
+6.0
+18.0
V
Negative Supply Voltage
VEE
-14.0
-6.0
V
REG1 Output Voltage
Vo1
+5.0
+16.0
V
REG2 Output Voltage
Vo2
-8.5
-5.0
V
Output Current 1 Io1 - 25 mA
Output Current 2 Io2 - 50 mA
※ Vdropout(Reg1) × Io(Reg1) + Vdropout(Reg2) × Io(Reg2) not to exceed Pd=380mW.
1/4
REV. B



BD3985FV
2/4
○ELECTRICAL CHARACTERISTICS(Unless otherwise specified, Ta=25℃, VCC=16.5V, VEE=-10V, Set REG1=15V, Set REG2=-7.5V)
Parameter
Limits
Symbol
Unit
MIN Typ MAX
Conditions
【Bias current】
Bias Current (VCC)
ICC - 500 850 μA Io1=0mA
Bias Current (VEE)
IEE - 150 250 μA Io2=0mA
【STB】
STB OFF Voltage
STBOFF
0
- 0.6 V Io1,2=0mA
STB ON Voltage
STBON 1.6 - 3.5 V Io1,2=0mA
STB OFF Bias Current (VEE)
IOFF
130
- μA Io1,2=0mA
STB ON Input Current
Iin 10 30 60 μA VSTB=2V, Io1,2=0mA
【Discharge block】
Discharge Current
Idis
150
300
550 μA
【REG1】
CTL1 Voltage
Vctl1 1.372 1.400 1.428 V Io1=10mA
Dropout Voltage 1
ΔVd1
0.25 0.35
V Vcc=14.2V, Io1=25mA
Peak Output Current 1
Io1 25 - - mA
Load Regulation 1
Vload1 - 100 - mV Io1=0~25mA
Short – Circuit Output Current 1
Ishort1 - 50 - mA Vo1=0V
Ripple Rejection 1
R.R.1
50
- dB f=120Hz, ein=1Vrms, Io1=2mA
Temperature Coefficient of Output Voltage 1 ※ Tcvo1
- ±0.02 - %/℃ Io1=1mA, Tj=0~125℃
【REG2】
CTL2 Voltage
Vctl1 -1.275 -1.250 -1.225 V Io2=10mA
Dropout Voltage2
ΔVd2
0.35 0.45
V VEE=-7.1V, Io2=50mA
Peak Output Current2
Io2 50 - - mA
Load Regulation2
Vload2 - 100 - mV Io2=0~50mA
Short – Circuit Output Current 2
Ishort2 - 120 - mA Vo2=0V
Ripple Rejection2
R.R.2
50
- dB f=120Hz, ein=1Vrms, Io2=2mA
Temperature Coefficient of Output Voltage 2 ※ Tcvo2
- ±0.02 - %/℃ Io2=1mA, Tj=0~125℃
◎ Discharge time
t=(Reg2×Co)/Idis [s]
(VEE=-10V)
Co:Reg2 Output capacitor(μF)
※ Design Guarantee (Shipment inspection is not done on all products.)
This product is not designed for protection against radio active rays.
○PHYSICAL DIMENSIONS・MARKING
Part No.
3985
Lot No.
SSOP-B8 (UNIT:mm)
REV. B





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