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Página inicial > Componentes Eletrônicos > Chips de IC > PMIC - Reguladores de Tensão - Controladores de Comutação DC DC
TSSOP
Semtech International
2008
Dual Synchronous Buck Pseudo Fixed Frequency Power Supply Controller The SC1485 is a dual output constant on synchronousbuck PWM controller intended for use in notebook computers and other battery operated portable devices. Features include high efficiency and a fast dynamic response with no minimum on time. The excellent transient response, means that SC1485 based solutions will require less output capacitance than competing fixed frequency converters. The frequency is constant until a step in load or line voltage occurs at which time the pulse density and frequency will increase or decrease to counter the change in output or input voltage. After the transient event, the controller frequency will return to steady state operation. At light loads, Power-Save Mode enables the SC1485 to skip PWM pulses for better efficiency.
Description: SC1485ITSTRT is a voltage supervisor IC from Semtech Corporation. It is a low power, low voltage supervisor with an active-low reset output. Features: Low power consumption Low voltage
Estoque:10000
Mínimo:1
Favorito
TSSOP-16
Texas Instruments
10+
The UCC2891/2/3/4 family of PWM controllers is designed to simplify implementation of the various active clamp/reset switching power topologies. The UCC289x is a peak current-mode, fixedfrequency, high-performance pulse width modulator. It includes the logic and the drive capability for the auxiliary switch with a simple method of programming the critical delays for proper active clamp operation. The UCC2891/3 includes a 110-V start-up regulator for initial start-up and to provide keep-alive power during stand-by. Additional features include an internal programmable slope compensation circuit, precise DMAX limit, and a single resistor programmable synchronizable oscillator. An accurate line monitoring function also programs the converter\x92s ON and OFF transitions with regard to the bulk input voltage. Along with the UCC2897, this UCC289x family allows the power supply designer to eliminate many of the external components, reducing the size and complexity of the design.
The UCC2893PWR is a high-performance, low-cost, current-mode, PWM controller for off-line and DC-to-DC converter applications. It is designed to provide excellent line and load regulation in a wide ra
Estoque:10000
Mínimo:2
Favorito
SOIC-8
On Semiconductor
11+
The UC3844B, UC3845B series are high performance fixed frequency current mode controllers. They are specifically designed for Off-Line and dc-to-dc converter applications offering the designer a cost-effective solution with minimal external components. These integrated circuits feature an oscillator, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET. Also included are protective features consisting of input and reference undervoltage lockouts each with hysteresis, cycle-by-cycle current limiting, a latch for single pulse metering, and a flip-flop which blanks the output off every other oscillator cycle, allowing output deadtimes to be programmed from 50% to 70%. These devices are available in an 8-pin dual-in-line and surface mount (SO-8) plastic package as well as the 14-pin plastic surface mount (SO-14). The SO-14 package has separate power and ground pins for the totem pole output stage. The UCX844B has UVLO thresholds of 16 V (on) and 10 V (off), ideally suited for off-line converters. The UCX845B is tailored for lower voltage applications having UVLO thresholds of 8.5 V (on) and 7.6 V (off).
Description: The UC3844B is a high performance current mode controller. Features: * High performance current mode control * Internal oscillator * Undervoltage lockout * Cycle-by-cycle current limit *
Estoque:10000
Mínimo:3
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SOP8
Texas Instruments
09+
HIGH - SPEED VOLTAGE MODE PULSE MODE WIDTH MODULATOR
Estoque:10000
Mínimo:1
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Estoque:10000
Mínimo:2
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Estoque:10000
Mínimo:2
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The UCC2893 is a high-performance, current-mode, fixed-frequency, pulse-width modulation (PWM) controller. It is designed to provide a cost-effective solution for high-performance, low-cost, off-line
Estoque:10000
Mínimo:1
Favorito
Description: The SG1526J-883B is a monolithic integrated circuit designed for use in switched mode power supplies. Features: Operating supply voltage range of 4.5V to 40V Output current up to 1.5A
Estoque:2000
Mínimo:1
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Description: The UC2843BD1G is an improved version of the UC3843B. It is a high performance fixed frequency current mode controller. Features: * High performance fixed frequency current mode control
Estoque:10000
Mínimo:3
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Description: SG3525ADWR2G is a Pulse Width Modulation (PWM) Control Circuit. Features: High speed pulse width modulation (PWM) Low start-up and operating current Internal oscillator Programmable
Estoque:10000
Mínimo:2
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Estoque:10000
Mínimo:2
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Description: The SG3525AP013TR is a high performance pulse width modulation (PWM) controller designed to provide the necessary features to implement off-line or DC-to-DC fixed frequency current mode c
Estoque:10000
Mínimo:11
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Description: The UC3843B is a high performance fixed frequency current mode controller. Features: Current Mode Operation Low Start Up Current Internal Slope Compensation Pulse-by-Pulse Current L
Estoque:10000
Mínimo:5
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Package Type: SOP-14 Manufacturer: MOTO Description: The MC34060ADG is a monolithic control circuit containing the primary functions required for DC-to-DC converters. It consists of an internal te
Estoque:10000
Mínimo:2
Favorito
Description: The UC3845BVNG is a high performance current mode controller. It is specifically designed for off-line and DC-to-DC converter applications offering the designer a cost effective solution
Estoque:10000
Mínimo:2
Favorito
Description: The UC2524DWTR is a high performance current mode PWM controller. It is designed to provide the necessary features to implement off-line or DC to DC fixed frequency current mode control s
Estoque:10000
Mínimo:2
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QFN-16
On Semiconductor
DC/DC Cntrlr Single-OUT Step Down 330kHz 16-Pin QFN EP T/R
The NCP5212AMNTXG is a low-voltage, low-power, high-efficiency, synchronous step-down DC/DC converter with integrated MOSFETs from ON Semiconductor. It is available in a QFN-16 package and is designed
Estoque:10000
Mínimo:2
Favorito
Description: The UC2844A is a high performance fixed frequency current mode controller. Features: High performance fixed frequency current mode control Operates at up to 500kHz Undervoltage
Estoque:10000
Mínimo:2
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IXMS150PSI is a high-voltage, high-speed, low-on-resistance, dual N-channel power MOSFET from IXYS. It is available in a DIP24 package. Description: The IXMS150PSI is a high-speed, low-on-resistance
Estoque:5000
Mínimo:1
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Estoque:10000
Mínimo:2
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Especialistas em produção interrompida, podemos fornecer um grande número de componentes eletrônicos que foram interrompidos e são difíceis de encontrar, para facilitar a empresa de manutenção