LP3918 Battery Charge Management and
... The LP3918 is a fully integrated charger and multiregulator unit designed for CDMA cellular phones. The LP3918 contains a Li-Ion battery charger, 7 low noise low dropout (LDO) voltage regulators and a high-speed serial interface to program on/off conditions and output voltages of individual regulato ...
... The LP3918 is a fully integrated charger and multiregulator unit designed for CDMA cellular phones. The LP3918 contains a Li-Ion battery charger, 7 low noise low dropout (LDO) voltage regulators and a high-speed serial interface to program on/off conditions and output voltages of individual regulato ...
Optimizing High Level Micro Stepping of
... voltage of the sense resistor using a multimeter. If a 1-Ω sense resistor is used, 10 mV stands for 10 mA for the regulated current. Record each step of the DAC voltage and the current, the VI curve is made for further compensation. Note that the measurement should be taken when all the settings inc ...
... voltage of the sense resistor using a multimeter. If a 1-Ω sense resistor is used, 10 mV stands for 10 mA for the regulated current. Record each step of the DAC voltage and the current, the VI curve is made for further compensation. Note that the measurement should be taken when all the settings inc ...
Characteristic Impedance Of The Honey-comb Pick-up Strips
... go on decreasing the value of resistance from about 100Ω, the reflection goes on decreasing and then second reflection peak starts decreasing. At a particular value of about 50Ω the reflection becomes almost zero. We can say that the wave is fully terminated. On further decreasing the value, there i ...
... go on decreasing the value of resistance from about 100Ω, the reflection goes on decreasing and then second reflection peak starts decreasing. At a particular value of about 50Ω the reflection becomes almost zero. We can say that the wave is fully terminated. On further decreasing the value, there i ...
LM193/LM293/LM393/LM2903 Low Power Low Offset Voltage Dual
... Positive excursions of input voltage may exceed the power supply level. As long as the other voltage remains within the common-mode range, the comparator will provide a proper output state. The low input voltage state must not be less than −0.3V (or 0.3V below the magnitude of the negative power sup ...
... Positive excursions of input voltage may exceed the power supply level. As long as the other voltage remains within the common-mode range, the comparator will provide a proper output state. The low input voltage state must not be less than −0.3V (or 0.3V below the magnitude of the negative power sup ...
MAX1910/MAX1912 1.5x/2x High-Efficiency White LED Charge Pumps General Description
... Figures 2–9) improves stability when operating from lowimpedance sources such as high-current laboratory bench power supplies. This resistor can be omitted when operating from higher impedance sources such as lithium or alkaline batteries. For some designs, such as an LED driver, input ripple is mor ...
... Figures 2–9) improves stability when operating from lowimpedance sources such as high-current laboratory bench power supplies. This resistor can be omitted when operating from higher impedance sources such as lithium or alkaline batteries. For some designs, such as an LED driver, input ripple is mor ...
AD7484 数据手册DataSheet下载
... Reference Output. REFOUT connects to the output of the internal 2.5 V reference buffer. A 470 nF capacitor must be placed between this pin and AGND. Reference Input. A 470 nF capacitor must be placed between this pin and AGND. When using an external voltage reference source, the reference voltage sh ...
... Reference Output. REFOUT connects to the output of the internal 2.5 V reference buffer. A 470 nF capacitor must be placed between this pin and AGND. Reference Input. A 470 nF capacitor must be placed between this pin and AGND. When using an external voltage reference source, the reference voltage sh ...
04_ELC4345_Fall2013_DC_DC_Buck
... and the inductor is “discharging.” The inductor voltage is shown in Figure 3. ...
... and the inductor is “discharging.” The inductor voltage is shown in Figure 3. ...
MAX17498A/MAX17498B/MAX17498C AC-DC and DC
... The MAX17498A/MAX17498B/MAX17498C devices are current-mode fixed-frequency flyback/boost converters with a minimum number of external components. They contain all the control circuitry required to design wide input voltage isolated and nonisolated power supplies. The MAX17498A has its rising/falling ...
... The MAX17498A/MAX17498B/MAX17498C devices are current-mode fixed-frequency flyback/boost converters with a minimum number of external components. They contain all the control circuitry required to design wide input voltage isolated and nonisolated power supplies. The MAX17498A has its rising/falling ...
LM3489/LM3489Q Hysteretic PFET Buck Controller with Enable Pin
... The LM3489 is a buck (step-down) DC-DC controller that uses a hysteretic control scheme. The control comparator is designed with approximately 10mV of hysteresis. In response to the voltage at the FB pin, the gate drive (PGATE pin) turns the external PFET on or off. When the inductor current is too ...
... The LM3489 is a buck (step-down) DC-DC controller that uses a hysteretic control scheme. The control comparator is designed with approximately 10mV of hysteresis. In response to the voltage at the FB pin, the gate drive (PGATE pin) turns the external PFET on or off. When the inductor current is too ...
MAX9476 - Part Number Search
... frequency for the VCXO. It is important to use a correct type of quartz crystal to avoid reducing frequency pulling range, or excessive output phase jitter. Choose an AT-cut crystal that oscillates at 35.328MHz on its fundamental mode with a variation of ±25ppm including frequency accuracy and opera ...
... frequency for the VCXO. It is important to use a correct type of quartz crystal to avoid reducing frequency pulling range, or excessive output phase jitter. Choose an AT-cut crystal that oscillates at 35.328MHz on its fundamental mode with a variation of ±25ppm including frequency accuracy and opera ...
line and motor reactance coils for converters
... the network connection we suppress commutation and current surges caused by capacitance in DC circuits, and also suppress electromagnetic noise generated by switchon of power semiconductor components. Use of line reactors also enhances the effect of noise suppressing filters. The line reactors are d ...
... the network connection we suppress commutation and current surges caused by capacitance in DC circuits, and also suppress electromagnetic noise generated by switchon of power semiconductor components. Use of line reactors also enhances the effect of noise suppressing filters. The line reactors are d ...
Design Consideration for Boundary Conduction Mode Power Factor
... ON Semiconductor and the ON Semiconductor logo are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries. ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other in ...
... ON Semiconductor and the ON Semiconductor logo are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries. ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other in ...
CMOS image sensor for the analysis of fast moving luminous objects
... Most of the CMOS image sensor developments have been, up to now, directed towards relatively slow speed image capture. But today, there is an increasing interest in the use of such sensors for high speed, high resolution applications that were until recently the exclusive domains of CCD imagers. Bes ...
... Most of the CMOS image sensor developments have been, up to now, directed towards relatively slow speed image capture. But today, there is an increasing interest in the use of such sensors for high speed, high resolution applications that were until recently the exclusive domains of CCD imagers. Bes ...
AD7823 数据手册DataSheet 下载
... this pin at the end of conversion also determines whether the part is powered down or not. See Operating Modes section of this data sheet. Positive input of the pseudo differential analog input. Negative input of the pseudo differential analog input. Ground reference for analog and digital circuitry ...
... this pin at the end of conversion also determines whether the part is powered down or not. See Operating Modes section of this data sheet. Positive input of the pseudo differential analog input. Negative input of the pseudo differential analog input. Ground reference for analog and digital circuitry ...
EX2100e Excitation Control 100, 77, 53, and 42 mm Thyristor Systems
... (SCR) is the standard Power Conversion Module (PCM). The inverting bridge can provide both positive and negative forcing voltage for optimum performance. Each rectifier bridge includes thyristor protection circuitry, such as snubbers, filters, and fuses. The thyristor bridge module is forced-air coo ...
... (SCR) is the standard Power Conversion Module (PCM). The inverting bridge can provide both positive and negative forcing voltage for optimum performance. Each rectifier bridge includes thyristor protection circuitry, such as snubbers, filters, and fuses. The thyristor bridge module is forced-air coo ...
Power On Behavior of Xilinx CPLDs Introduction
... The I/O tracking gap described above occurs if configuration SRAM bits pass their values (zeros or ones) to device I/O cells before an internal Power-On Reset (POR) is able to clear them. It can also occur if internal nodes (such as Node A from the earlier supply sequencing discussion) cause the out ...
... The I/O tracking gap described above occurs if configuration SRAM bits pass their values (zeros or ones) to device I/O cells before an internal Power-On Reset (POR) is able to clear them. It can also occur if internal nodes (such as Node A from the earlier supply sequencing discussion) cause the out ...
GE Controls | Installation Guide | Centralized Lighting Control Panel
... These instructions do not cover all details or variations in equipment nor do they provide for every possible contingency that may be met in connection with installation, operation or maintenance. Should further information be desired or should particular problems arise that are not covered for the ...
... These instructions do not cover all details or variations in equipment nor do they provide for every possible contingency that may be met in connection with installation, operation or maintenance. Should further information be desired or should particular problems arise that are not covered for the ...
LMV710, LMV711, LMV715 (Rev. A)
... low power, low cost, and small size required by battery-powered portable electronics. These devices have an input common-mode voltage range that exceeds the rails, rail-to-rail output, and high output-current drive. The devices offer a bandwidth of 5 MHz and a slew rate of 5 V/µs. On the LMV711 and ...
... low power, low cost, and small size required by battery-powered portable electronics. These devices have an input common-mode voltage range that exceeds the rails, rail-to-rail output, and high output-current drive. The devices offer a bandwidth of 5 MHz and a slew rate of 5 V/µs. On the LMV711 and ...
DS4266 DDR Clock Oscillator General Description Features
... and stability better than ±50ppm, including aging. Jitter performance is better than 0.7psRMS typically over a 12kHz to 20MHz bandwidth, and duty-cycle performance is better than 48%/52%. The DS4266 has an output frequency of 266MHz, and it supports LVDS and LVPECL output types. The DS4266 is constr ...
... and stability better than ±50ppm, including aging. Jitter performance is better than 0.7psRMS typically over a 12kHz to 20MHz bandwidth, and duty-cycle performance is better than 48%/52%. The DS4266 has an output frequency of 266MHz, and it supports LVDS and LVPECL output types. The DS4266 is constr ...
BDTIC www.BDTIC.com/infineon AN2011-01 – Module Adapter
... In case the values of RGon and RGoff need to be different, the Diode D25 needs to be assembled to separately adjust the values of RGon and RGoff. ...
... In case the values of RGon and RGoff need to be different, the Diode D25 needs to be assembled to separately adjust the values of RGon and RGoff. ...
Pulse-width modulation
Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a modulation technique used to encode a message into a pulsing signal. Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial loads such as motors. In addition, PWM is one of the two principal algorithms used in photovoltaic solar battery chargers, the other being MPPT.The average value of voltage (and current) fed to the load is controlled by turning the switch between supply and load on and off at a fast rate. The longer the switch is on compared to the off periods, the higher the total power supplied to the load.The PWM switching frequency has to be much higher than what would affect the load (the device that uses the power), which is to say that the resultant waveform perceived by the load must be as smooth as possible. Typically switching has to be done several times a minute in an electric stove, 120 Hz in a lamp dimmer, from few kilohertz (kHz) to tens of kHz for a motor drive and well into the tens or hundreds of kHz in audio amplifiers and computer power supplies.The term duty cycle describes the proportion of 'on' time to the regular interval or 'period' of time; a low duty cycle corresponds to low power, because the power is off for most of the time. Duty cycle is expressed in percent, 100% being fully on.The main advantage of PWM is that power loss in the switching devices is very low. When a switch is off there is practically no current, and when it is on and power is being transferred to the load, there is almost no voltage drop across the switch. Power loss, being the product of voltage and current, is thus in both cases close to zero. PWM also works well with digital controls, which, because of their on/off nature, can easily set the needed duty cycle.PWM has also been used in certain communication systems where its duty cycle has been used to convey information over a communications channel.