Linear Regulator. BD3989FV Datasheet

BD3989FV Regulator. Datasheet pdf. Equivalent

Part BD3989FV
Description Positive and Negative Variable Linear Regulator
Feature STRUCTURE Silicon Monolithic Integrated Circuit TYPE Positive and Negative Variable Linear Regula.
Manufacture Rohm
Total Page 5 Pages
Datasheet
Download BD3989FV Datasheet



BD3989FV
STRUCTURE
Silicon Monolithic Integrated Circuit
TYPE
Positive and Negative Variable Linear Regulator
PRODUCT SERIES
BD3989FV
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
+15.0
+18.0
V
Negative Supply Voltage
VEE
-14.0
-7.5
V
REG1 Output Voltage
Vo1
+14.0
+16.0
V
REG2 Output Voltage
Vo2
-8.5
-6.5
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



BD3989FV
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)
Bias Current (VEE)
【STB】
ICC - 500 850 μA Io1=0mA
IEE - 200 300 μA Io2=0mA
STB OFF Voltage
STB ON Voltage
STB OFF Bias Current (VEE)
STB ON Input Current
【Discharge block】
STBOFF
0
- 0.6 V Io1,2=0mA
STBON 1.6 - 3.5 V Io1,2=0mA
IOFF
0.7
1.6
2.5 mA Io1,2=0mA
Iin 10 30 60 μA VSTB=2V, Io1,2=0mA
Discharge Current
【REG1】
Idis
1.5
3.5
6.0 mA
CTL1 Voltage
Dropout Voltage 1
Peak Output Current 1
Load Regulation 1
Vctl1
ΔVd1
Io1
Vload1
1.379
25
1.400
0.25
100
1.421
0.35
V Io1=10mA
V Vcc=14.2V, Io1=25mA
mA
mV Io1=0~25mA
Short – Circuit Output Current 1
Ishort1 - 50 - mA Vo1=0V
Ripple Rejection 1
Temperature Coefficient of Output Voltage 1 ※
【REG2】
R.R.1
Tcvo1
- 50 - dB f=120Hz, ein=1Vrms, Io1=2mA
- ±0.02 - %/℃ Io1=1mA, Tj=0~125℃
CTL2 Voltage
Vctl1 -1.269 -1.250 -1.231 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.
3989
Lot No.
SSOP-B8 (UNIT:mm)
REV. B





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