- Buyers Guide
Linear Technology Corp. announces the automotive (H-grade) and high reliability military (MP-grade) versions of the LT4320, an ideal diode bridge controller for 9 to 72 V systems. The LT4320 replaces a full-wave diode bridge rectifier with a low loss N-channel MOSFET bridge to reduce the power and voltage losses by a factor of ten or more. Power supply size is reduced as the enhanced power efficiency eliminates bulky heat sinks.
Linear Technology Corporation announces the LT3048, a step-up DC/DC converter with an integrated LDO output that delivers a low noise, low ripple 15 V bias supply. The LT3048-15 delivers up to 40 mA of continuous output current at 15 V with output ripple and noise less than 500 µVPK-PK and 0.1 % load regulation. The device operates from an input voltage range of 2.7 to 4.8 V, making it suitable for single-cell Li-Ion batteries or 3.3 V logic rails.
Linear Technology Corp. announces the LT8309, a flyback secondary-side synchronous rectifier driver that replaces the output diode with a MOSFET, allowing up to 10A output current without the use of a heat sink. The maximum output current of a flyback power supply has been limited by the power loss and heat generated from the output diode when no heat sink is used.
Linear Technology announces the LTC3107, a highly integrated DC/DC converter designed to extend the life of a primary battery in low power wireless system networks (WSNs). The LTC3107 combines energy harvesting and power management capability with a primary battery cell to extend the battery’s usable lifetime. The LTC3107 harvests energy from thermoelectric generators (TEGs) and thermopiles when these sources are available.
Linear Technology Corp. introduces the LTC2323-16, a dual 16-bit 5 Msps simultaneous sampling, successive approximation register (SAR) ADC with flexible differential inputs. The LTC2323-16 supports a wide input common mode range and simplifies system-level design by relaxing the signal conditioning requirements to drive the ADC with a wide range of analog signals up to Nyquist frequencies.
Linear Technology Corp. announces the LT3840, a wide range synchronous step-down DC/DC controller which includes a 7.5 V buck-boost bias voltage to provide efficient gate drive over a 2.5 to 60 V input voltage range. The LT3840 generates a 7.5 V bias voltage for MOSFET gate drive regardless of whether the input voltage is above, below or equal to 7.5 V.
Linear Technology Corp. announces the LTC3784, a high power two phase single output synchronous step-up DC/DC controller that replaces rectifying boost diodes with high efficiency N-channel MOSFETs. This device can produce a 24 V output at 10 A from a 12 V input at up to 97% efficiency without any heat sink. The LTC3784 operates from an input voltage ranging from 4.5 V to 60 V during start-up.
Linear Technology Corporation introduces the LTC3128, a high efficiency, input current-limited buck-boost super capacitor charger with active charge balancing for 1 or 2 series super capacitors. The LTC3128 features an average input current limit that can be programmed up to 3A with +/-2% accuracy, preventing power source overload while minimizing capacitor recharge time.
Linear Technology Corp. announces the LT8612, a 6 A, 42 V input capable synchronous step-down switching regulator. Synchronous rectification delivers efficiency as high as 95% while Burst Mode® operation keeps quiescent current under 3 µA in no-load standby conditions. Its 3.4 to 42 V input voltage range makes it ideal for automotive and industrial applications. Its internal high efficiency switches deliver up to 6 A of continuous output current to voltages as low as 0.97 V.
Linear Technology announces the LTC3638, a 140 V input-capable high efficiency buck converter that delivers up to 250 mA of continuous output current. It operates from an input voltage range of 4 to 140 V, making it ideal for telecom, industrial, avionic and automotive applications. The LTC3638 utilizes internal synchronous rectification and a programmable hysteretic-mode design to optimize efficiency over a broad range of output currents.
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