L2750 ,DUAL LOW DROP HIGH POWER OPERATIONAL AMPLIFIERL2750DUAL LOW DROP HIGH POWEROPERATIONAL AMPLIFIERADVANCE DATAHIGH OUTPUT CURRENTVERY LOW SATURATIO ..
L290 ,TACHOMETER CONVERTERapplicationsDIP-16 Plasticsuch as carriage/daisy-wheel position control in(0.25)typewriters.The L29 ..
L290B ,TACHOMETER CONVERTERELECTRICAL CHARACTERISTICS (Refer to the test circuit, S in (A), V = ± 12 V, T =25°Cs ambunless oth ..
L290B ,TACHOMETER CONVERTERL290TACHOMETER CONVERTERDESCRIPTIONThe L290, a monolithic LSI circuit in 16-lead inlineplastic pack ..
L290B ,TACHOMETER CONVERTERABSOLUTE MAXIMUM RATINGSymbol Parameter Value UnitV Supply Voltage ± 15 VsV (FTA, FTB, FTF) Input S ..
L292 ,SWITCH-MODE DRIVER FOR DC MOTORSELECTRICAL CHARACTERISTICS (V = 36 V, T = 25 °C, f = 20 KHz unless otherwise specified)s amb oscSym ..
LB11690 ,Brushless Motor Drivers (3-phase drive): Electric bicycles motor driverAbsolute Maximum Ratings at Ta = 25°C (Note: Ratings for the LB11690H are preliminary.)Parameter Sy ..
LB11820 ,Direct PWM Drive Brushless Pre-Driver for Household Appliance MotorsOrdering number : ENN7104AMonolithic Linear ICLB11820MDirect PWM Drive Brushless Pre-Driver forHous ..
LB11822 ,Brushless Motor Drivers (3-phase drive): PPC and printer paper feed and drum motor driverAbsolute Maximum Ratings at Ta = 25°CParameter Symbol Conditions Ratings UnitSupply voltage V max ..
LB11822 ,Brushless Motor Drivers (3-phase drive): PPC and printer paper feed and drum motor driverElectrical Characteristics at Ta = 25°C, V = VM = 24 VCCRatingsParameter Symbol Conditions Unitmin ..
LB11826 ,Brushless Motor Drivers (3-phase drive): PPC and printer paper feed and drum motor driverElectrical Characteristics at Ta = 25°C, V = VM = 24 VCCRatingsParameter Symbol Conditions Unitmin ..
LB11827 ,Brushless Motor Drivers (3-phase drive): PPC and printer paper feed and drum motor driverElectrical Characteristics at Ta = 25°C, V = VM = 24 VCCRatingsParameter Symbol Conditions Unitmin ..
L2750
DUAL LOW DROP HIGH POWER OPERATIONAL AMPLIFIER
L2750DUAL LOW DROP HIGH POWER
OPERATIONAL AMPLIFIER
ADVANCE DATAHIGH OUTPUT CURRENT
VERY LOW SATURATION VOLTAGE
LOW VOLTAGEOPERATION
LOW INPUT OFFSET VOLTAGE
GND COMPATIBLE INPUTS
ST-BY FUNCTION (LOW CONSUMPTION)
HIGH APPLICATIONFLEXIBILITY
PROTECTIONS:VERY INDUCTIVE LOADS
OVERRATING CHIP TEMPERATURE
LOAD DUMP VOLTAGE
FORTUITOUS OPEN GROUND
ESD
DESCRIPTIONThe L2750isa new technology class AB dual
power operational amplifier assembledin Multi-
watt11 package.
Thanksto the fully complementary PNP/NPN out-
put configuration the L2750 can delivera rail-to-
rail output voltage swing evenat the highest cur-
rent.
Additional featureis the very low current Stand- function.
The high application flexibilityof the L2750 makes
the device suitablefor either motor driving/control
and audio applications purposes.
BLOCK DIAGRAM
Multiwatt-11
ORDERING NUMBER: L2750
PIN CONNECTION (Top view)
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value UnitVSop Operating Supply Voltage 18 Vmax Supply Voltage 28 V
VPEAK Peak Supply Voltage(t= 50ms) 40 V Input Voltage VSop V Differential Input Voltage VSop V Output Peak Current (non rep.t= 100μs) 5 A Output Peak Current (rep.f> 10Hz) 4 A
Ptot Power Dissipation TCASE=85°C36 W
Tstg,Tj Storage and Junction Temperature -40to 150 °C
THERMAL DATA
Symbol Description Value UnitRth j-case Thermal Resistance Junction-case Max 1.8 °C/W
ELECTRICAL CHARACTERISTICS (Referto the operational amplifier with GV= 24dB; VS= 14.4V;
Tamb =25°C, unless otherwise specified
Symbol Parameter Test Condition Min. Typ. Max. Unit Supply Voltage 4 18 V Total Quiescent Drain Current 30 50 mA
VOS Input Offset Voltage 5 mV
ISB ST-BY Current Consumption 50 μA Input Bias Current 0.5 μA
IOS Input Offset Current 50 nA
VDROP Output Voltage Drop (High) IO= 0.5A =3A
Output Voltage Drop (Low) IO= 0.5A =3A
0.5 Slew Rate 4 V/μs Gain Bandwidth Prod 10 MHz Open Loop Voltage Gain f= 1KHz 85 dB
RIN Input Resistance 150 MΩ
L2750
APPLICATION SUGGESTIONThe high flexibility makes the L2750 suitablefora
wide rangeof applications.
Motor ControllerThe device can be utilizedasa motor controller.
Fig.1 representsa bidirectional DC motor control
suitablefor logic driving.In these kindsof applica-
tionitis possibleto take advantageof the high
current capabilityof the L2750 for driving several
typesof low impedance motorsina broad range applications.Moreover the low drop allows high
startup currents evenat lowest supply voltage.
Audio ApplicationsAnother typical utilizationof the L2750 concerns
the audio field,as follows: DRIVER FOR BOOSTER: The remarkably low
distortionand noise makes the deviceproperto usedas high quality driver for main amplifi-
ers (i.e. car radio boosters). An exampleis
shownby Fig.5, where the gainis setto24dB
(see also the relevant characteristics). CAR RADIO BOOSTER WITH DIFFERENTIAL
INPUT: Fig.10 showsan exampleof car radio
booster, witha gainof30 dB, thatis specially
recommendedfor active loudspeakers. Among
its main featureis the differential input and sub-
sequent high noise suppression. The typical
output power delivered intoa 4Ω loadis 24W
(VS= 14.4V;d =10%), asshownby the charac-
teristics enclosed.
ELECTRICAL CHARACTERISTICS (continued)
Symbol Parameter Test Condition Min. Typ. Max. UnitSVR Supply Voltage Rejection Rs =0= 100Hz 90 dB Crosstalk f= 1KHzto 10KHz 80 dB
Figure1
Figure2: Low Drop Voltage vs. Output Current
Figure3: High Drop Voltage vs. Output Current
Figure4: Open Loop Gain vs. Phase Response
L2750
Figure5: Stereo Audio Amplifier Application Circuit
Figure6: P.C. Board and ComponentsLayoutof the Circuitof Figure5 (1:1 scale)
L2750
Figure7: QuiescentDrain Current vs. Supply
Voltage
Figure 11: SupplyVoltageRejectionvs.Frequency
Figure9: Distortion vs. Frequency
Figure8: Distortion vs. Output Voltage
Figure 12:EN Input vs.Rg
Figure 10: Cross-Talkvs Frequency
AUDIO STEREO APPLICATION CIRCUIT OF FIGURE5
L2750
Figure 13: Bridge Power Amplifier with Balanced Input Application Circuit
Figure 14: P.C. Board and Component Layoutof the Circuitof Figure13 (1:1 scale)
L2750
