The LT®1246/LT1247 are 8-pin, fixed frequency, current mode, pulse width modulators. These devices are designed to improve plug-in compatible versions of the industry standard UC1842 PWM circuit. The LT1246/LT1247 are optimized for off-line and DC/DC converter applications. They contain a temperature compensated reference, high gain error amplifier, current sense comparator, ...
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The LT®3782 is a two-phase boost DC/DC current mode conversion controller. Its high switching frequency (up to 500kHz) and two-phase operation reduce system filter capacitance and inductance requirements. With a gate driver of 10V (VCC≥13V) and a peak drive current of 4A, the LT3782 can drive industrial-grade high-power and high-efficiency MOSFETs. For synchronous applic...
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The LTC®1923 is a PWM thermoelectric cooler (TEC) or heater application requiring either unidirectional or bidirectional drive circuits. All necessary control circuitry and two sets of complementary output drivers are integrated into the LTC1923 as a full-bridge driver, providing an efficient means of bidirectional TEC current flow. Accurate temperature control loops to stabiliz...
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The ISL6224 provides a power control and protection, adjustable output voltage required for power chipsets and memory banks in high-performance notebooks and PDAs. This adjustable output voltage range is from 0.9-5.5V. A hysteretic or PWM controller regulates the output voltage from the battery voltage ranging from 4V to 24V. Synchronous rectification and hysteretic operation at li...
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The ISL6244 provides core voltage regulation, driving 24 interleaved synchronous rectification buck converter channels in parallel. Staggered channel timing results in increased ripple current thereby reducing input and output ripple frequency. Reduced component cost results in lower ripple, lower power dissipation, and a smaller implementation area. The ISL6244 uses cost and space-savin...
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The ISL6431 is a high efficiency, fixed frequency, synchronous buck PWM controller. It is designed for core processor, memory and peripheral power supplies required for set-top boxes, cable modems, DSL modems and residential home gateways for applications that use lower distributed voltages to convert to 5V. This device implements a simple working DC-DC buck converter with complet...
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The ISL6439 easily enables the implementation of a DC-DC buck converter with complete control and protection schemes. Designed to drive N-channel MOSFETs in a synchronous buck topology, the ISL6439 integrates control, output regulation, monitoring and protection functions into a single package. The ISL6439 provides simple single feedback loop, voltagemode control with fast t...
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The ISL6530 provides complete control and protection of dual DC-DC converters for high performance optimized DDRAM memory applications. It is designed to drive a low-cost N-channel MOSFET synchronous rectification buck topology, effectively generating VDDQ's 2.5V-powered DDRAM memory, DDRAM's differential signals VREF, and VTT's signal termina...
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The ISL6552 multiphase PWM control IC, together with its companion gate driver, HIP6601, HIP6602 or HIP6603 and an external Intersil MOSFET, provides high precision voltage regulation for advanced microprocessors. Multiphase power conversion is a marked departure from the earlier single-phase converter configurations employed to meet the increasing current demands of mode...
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The ISL6840, ISL6841, ISL6842, ISL6843, ISL6844, ISL6845 family of adjustable pulse frequency, low power, width modulation (PWM) current mode controllers are designed for a wide range of power conversion applications including boost, flyback, and isolated output configurations. Peak current mode control efficiently handles supply transients and provides inherent overcurrent ...
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The UCC3808A is a family of BiCMOS push-pull, high speed, low power, pulse width modulators. The UCC3808A contains all the control and drive circuitry required for off-line or DC-DC fixed frequency current mode switching with very few external parts to count on the power supply. The UCC3808A dual output driver stage is arranged in a push-pull configuration. Both outputs sw...
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