MAX887 100% Duty Cycle, Low-Noise, Step-Down, PWM DC-DC Converter _______________General Description
... Connect SYNC to VL for normal forced PWM operation. Forced PWM operation is desirable in sensitive RF and data-acquisition applications, to ensure that switchingnoise harmonics do not interfere with sensitive IF and data-sampling frequencies. A minimum load is not required during forced PWM operatio ...
... Connect SYNC to VL for normal forced PWM operation. Forced PWM operation is desirable in sensitive RF and data-acquisition applications, to ensure that switchingnoise harmonics do not interfere with sensitive IF and data-sampling frequencies. A minimum load is not required during forced PWM operatio ...
a AN-202 APPLICATION NOTE
... subcircuit, usually a single stage, in the overall amplifier. In the illustration, the input stage converts the differential input to a single-ended signal. The signal drives an intermediate stage (which, in practice, often includes level translator circuitry) that has low-frequency gain, but limite ...
... subcircuit, usually a single stage, in the overall amplifier. In the illustration, the input stage converts the differential input to a single-ended signal. The signal drives an intermediate stage (which, in practice, often includes level translator circuitry) that has low-frequency gain, but limite ...
SN74CBTD3305C 数据资料 dataSheet 下载
... Control input voltage range, VIN (see Notes 1 and 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V Switch I/O voltage range, VI/O (see Notes 1, 2, and 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V Control input clamp curren ...
... Control input voltage range, VIN (see Notes 1 and 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V Switch I/O voltage range, VI/O (see Notes 1, 2, and 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V Control input clamp curren ...
MAX8790A Six-String White LED Driver with Active General Description
... the light source. A current-mode step-up controller drives up to six parallel strings of multiple series-connected LEDs. Each string is terminated with ballast that achieves ±1.5% current regulation accuracy, ensuring even brightness for all LEDs. The MAX8790A has a wide input-voltage range from 4.5 ...
... the light source. A current-mode step-up controller drives up to six parallel strings of multiple series-connected LEDs. Each string is terminated with ballast that achieves ±1.5% current regulation accuracy, ensuring even brightness for all LEDs. The MAX8790A has a wide input-voltage range from 4.5 ...
The Challenge of Accurately Analyzing Thermal Resistances
... Figure 4: Thermographic imaging to extract the chip temperature Analyzing the chip area within the IR-picture leads to a maximum temperature of 103oC at a bond wire position in the center of the chip while the highest chip temperature remains at 100o C. The average considering the whole chip area is ...
... Figure 4: Thermographic imaging to extract the chip temperature Analyzing the chip area within the IR-picture leads to a maximum temperature of 103oC at a bond wire position in the center of the chip while the highest chip temperature remains at 100o C. The average considering the whole chip area is ...
PDF Reference Designs
... Connect the 120-pin connector on the EVAL-SDP-CB1Z to the SDP-PMD-IB1Z board. Use nylon hardware to firmly secure the two boards, using the holes provided at the ends of the 120-pin connectors. Connect the EVAL-CN0346-PMDZ to Connector J2 on the SDP-PMD-IB1Z board. With the power supply off, connect ...
... Connect the 120-pin connector on the EVAL-SDP-CB1Z to the SDP-PMD-IB1Z board. Use nylon hardware to firmly secure the two boards, using the holes provided at the ends of the 120-pin connectors. Connect the EVAL-CN0346-PMDZ to Connector J2 on the SDP-PMD-IB1Z board. With the power supply off, connect ...
LTC1980
... regulated output or simultaneously charging the battery while powering a system load from an unregulated AC wall adapter. Combining these features into a single IC produces a smaller area and lower cost solution compared to presently available multi-IC solutions. The LTC1980 shares the discrete comp ...
... regulated output or simultaneously charging the battery while powering a system load from an unregulated AC wall adapter. Combining these features into a single IC produces a smaller area and lower cost solution compared to presently available multi-IC solutions. The LTC1980 shares the discrete comp ...
AAT4608 数据资料DataSheet下载
... Application Specific Power MOSFET™ (ASPM™) product family. It is a current limited P-channel MOSFET power switch designed for high-side load switching applications. This switch operates with inputs ranging from 2.7V to 5.5V, making it ideal for both 3V and 5V systems. An integrated current-limiting ...
... Application Specific Power MOSFET™ (ASPM™) product family. It is a current limited P-channel MOSFET power switch designed for high-side load switching applications. This switch operates with inputs ranging from 2.7V to 5.5V, making it ideal for both 3V and 5V systems. An integrated current-limiting ...
System Architecture and Component Evaluation for ESTCube
... Space is becoming more accessible by the year and is not no longer limited to large governmental agencies or corporations, but is also reachable for smaller research groups, startups and even individuals. Much of this is due to the emergence of the nanosatellites called CubeSats [1] in the early 200 ...
... Space is becoming more accessible by the year and is not no longer limited to large governmental agencies or corporations, but is also reachable for smaller research groups, startups and even individuals. Much of this is due to the emergence of the nanosatellites called CubeSats [1] in the early 200 ...
FINAL POWER AMPLIFIER OVERVIEW FUNCTIONAL
... FUNCTIONAL DESCRIPTION The High Level Transmitter (HLT) Final Power Amplifier (FPA) consists of two identical Final Amplifiers: FPA#1 & FPA#2. They provide the third and final stage of RF amplification in the MSR Transmitter. Although the two final amplifiers are identical, they are not redundant si ...
... FUNCTIONAL DESCRIPTION The High Level Transmitter (HLT) Final Power Amplifier (FPA) consists of two identical Final Amplifiers: FPA#1 & FPA#2. They provide the third and final stage of RF amplification in the MSR Transmitter. Although the two final amplifiers are identical, they are not redundant si ...
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... risks of same, both to and from the place of repair, will be the sole responsability of the User. This warranty expires after the date of purchase and any assistance required after said date including spare parts, labor, transport of personnel and materials will be charged to the User basated on the ...
... risks of same, both to and from the place of repair, will be the sole responsability of the User. This warranty expires after the date of purchase and any assistance required after said date including spare parts, labor, transport of personnel and materials will be charged to the User basated on the ...
MAX6397/MAX6398 Overvoltage Protection Switch/Limiter
... the output load or limit the output voltage during an input overvoltage condition. These devices are ideal for applications that must survive high-voltage transients such as those found in industrial applications. The MAX6397/MAX6398 monitor the input or output voltages and control an external n-cha ...
... the output load or limit the output voltage during an input overvoltage condition. These devices are ideal for applications that must survive high-voltage transients such as those found in industrial applications. The MAX6397/MAX6398 monitor the input or output voltages and control an external n-cha ...
The Challenge of Accurately Analyzing Thermal Resistances
... Figure 4: Thermographic imaging to extract the chip temperature Analyzing the chip area within the IR-picture leads to a maximum temperature of 103oC at a bond wire position in the center of the chip while the highest chip temperature remains at 100o C. The average considering the whole chip area is ...
... Figure 4: Thermographic imaging to extract the chip temperature Analyzing the chip area within the IR-picture leads to a maximum temperature of 103oC at a bond wire position in the center of the chip while the highest chip temperature remains at 100o C. The average considering the whole chip area is ...
DESIGN OF DC MACHINE
... armature increases, the peripheral velocity of the armature v = πDN/60 m/s , centrifugal force and its effects increases. Therefore the machine must be mechanically made robust to withstand the effect of centrifugal force. This increases the cost of the machine. In general for normal construction, p ...
... armature increases, the peripheral velocity of the armature v = πDN/60 m/s , centrifugal force and its effects increases. Therefore the machine must be mechanically made robust to withstand the effect of centrifugal force. This increases the cost of the machine. In general for normal construction, p ...
Simulation of DC-DC Converter-Fed BLDC Motor Drive for PFC
... [1]. These BLDC motors are not limited to household applications, but these are suitable for other applications such as medical equipment, transportation, HVAC, motion control, and many industrial tools [2]–[4]. A BLDC motor has three phase windings on the stator and permanent magnets on the rotor [ ...
... [1]. These BLDC motors are not limited to household applications, but these are suitable for other applications such as medical equipment, transportation, HVAC, motion control, and many industrial tools [2]–[4]. A BLDC motor has three phase windings on the stator and permanent magnets on the rotor [ ...
ML145170 - Lansdale Semiconductor
... applications. An external feedback resistor of approximately 5 MΩ is required across the OSCin and OSCout pins in the AC–coupled case (see Figure 8a or alternate circuit 8b). OSCout is an internal node on the device and should not be used to drive any loads (i.e. OSCout is unbuffered). However, the ...
... applications. An external feedback resistor of approximately 5 MΩ is required across the OSCin and OSCout pins in the AC–coupled case (see Figure 8a or alternate circuit 8b). OSCout is an internal node on the device and should not be used to drive any loads (i.e. OSCout is unbuffered). However, the ...
MAX1716/MAX1854/MAX1855 High-Speed, Adjustable, Synchronous Step-Down Controllers with Integrated Voltage Positioning General Description
... proprietary Quick-PWM™ quick-response, constant-ontime PWM control scheme handles wide input/output voltage ratios with ease and provides 100ns “instant-on” response to load transients while maintaining a relatively constant switching frequency. The MAX1716/MAX1854/MAX1855 are designed specifically ...
... proprietary Quick-PWM™ quick-response, constant-ontime PWM control scheme handles wide input/output voltage ratios with ease and provides 100ns “instant-on” response to load transients while maintaining a relatively constant switching frequency. The MAX1716/MAX1854/MAX1855 are designed specifically ...
chapter 5 - UniMAP Portal
... This design avoid using the permanent magnets. The simplest design is to use a non-magnetized iron vane to move the needle against spring tension, the vane being attracted toward a stationary coil of wire energized by the AC quantity to be measured, Figure ...
... This design avoid using the permanent magnets. The simplest design is to use a non-magnetized iron vane to move the needle against spring tension, the vane being attracted toward a stationary coil of wire energized by the AC quantity to be measured, Figure ...
Resistive opto-isolator
Resistive opto-isolator (RO), also called photoresistive opto-isolator, vactrol (after a genericized trademark introduced by Vactec, Inc. in the 1960s), analog opto-isolator or lamp-coupled photocell, is an optoelectronic device consisting of a source and detector of light, which are optically coupled and electrically isolated from each other. The light source is usually a light-emitting diode (LED), a miniature incandescent lamp, or sometimes a neon lamp, whereas the detector is a semiconductor-based photoresistor made of cadmium selenide (CdSe) or cadmium sulfide (CdS). The source and detector are coupled through a transparent glue or through the air.Electrically, RO is a resistance controlled by the current flowing through the light source. In the dark state, the resistance typically exceeds a few MOhm; when illuminated, it decreases as the inverse of the light intensity. In contrast to the photodiode and phototransistor, the photoresistor can operate in both the AC and DC circuits and have a voltage of several hundred volts across it. The harmonic distortions of the output current by the RO are typically within 0.1% at voltages below 0.5 V.RO is the first and the slowest opto-isolator: its switching time exceeds 1 ms, and for the lamp-based models can reach hundreds of milliseconds. Parasitic capacitance limits the frequency range of the photoresistor by ultrasonic frequencies. Cadmium-based photoresistors exhibit a ""memory effect"": their resistance depends on the illumination history; it also drifts during the illumination and stabilizes within hours, or even weeks for high-sensitivity models. Heating induces irreversible degradation of ROs, whereas cooling to below −25 °C dramatically increases the response time. Therefore, ROs were mostly replaced in the 1970s by the faster and more stable photodiodes and photoresistors. ROs are still used in some sound equipment, guitar amplifiers and analog synthesizers owing to their good electrical isolation, low signal distortion and ease of circuit design.