Linear Technology Corp.
Milpitas, CA 95035
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Switching Regulator features low 100 -µA quiescent current.
Model LT1976EFE step-down regulator operates within input voltage range of 3.3-60 V. Internal 1.5 A, 0.2 ohm switch delivers up to 1.25 A of continuous output current to voltages as low as 1.25 V. Combination of thermally enhanced TSSOP package and 200 kHz switching frequency keeps external inductors and capacitors small. Unit includes power good flag with programmable threshold and time-out. It...
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Li-Ion Battery Charger requires no external components.
Model LTC4058 charges single-cell 4.2 V Li-Ion batteries from 4.25-6.5V input sources in constant-current and constant-voltage modes. It operates autonomously, independent of firmware for battery monitoring, charge termination, and protection. Thermal regulator guarantees maximum charge current regardless of ambient temperature. By combining voltage reference with remote battery sensing, unit...
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Isolated DC/DC Controller integrates opto drive.
Model LT3804 is a 100 W, secondary side, DC/DC regulator for dual output isolated power supplies. Housed in 28-lead TSSOP package, it converts 36-72 V supplies to output voltages of 5, 3.3, 2.5, 1.5, and lower at up to 50 W per output. Differential Kelvin voltage sensing is used for each output feedback. Model LT3804 operates with switching frequencies from 200-800 kHz. It contains error...
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Op Amp features 100 MHz gain bandwidth.
Model LT6206 dual video, operational amplifier operates on supplies from 2.7-12.6 V with 400 V/Ã-µs slew rate and high output drive of 50 mA. Rail-to-rail outputs swing within 60 mV of either supply rail, making unit suited for 3 V operation requiring max output dynamic range. Amplifier offers over 90 dB of channel isolation at 10 MHz. Video specifications include 0.05% differential gain,...
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Battery Charger offers up to 4 A charge capability.
Model LTC4006 2- to 4-cell Li-Ion battery charger includes I/O status signals and is housed in narrow 16-pin SSOP package. It provides output signals for end-of-charge and wall adapter detection, as well as charge current value indicator for gas-gauging. Synchronous DC/DC step-down operation allows up to 96% operating efficiency from 6-28 V supplies. Product includes automatic recharge and...
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DC/DC Converter is offered in 6-lead ThinSOT package.
Combining internal 42 V, 1.1 A VCESAT switch with soft-start capability, LT3467 uses constant frequency current mode architecture and operates from input voltage range of 2.4-16 V. Step-up DC/DC converter employs ceramic capacitors and inductors and 1.3 MHz constant switching frequency for low noise operation. Additional offerings include pin-to-pin compatibility with LT1930 and LT1613 and...
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Interface Transceiver Chipset supports 3.3 V logic.
Models LTC2847/LTC2845 come in 5 x 7 mm QFN packages and provide multi-protocol serial port for LAN and WAN equipment with remote access ports. Two-chip solution includes configurable transceivers for data and clock signals with on-chip switchable termination resistor networks and transceivers for control signals. Units operate from single 5 V supply and support RS232, RS449, EIA-530, EIA-530-A,...
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DC/DC Converter provides step-up and step-down regulation.
Model LT3433 current-mode DC/DC converter operates from input voltage of 4-60 V, delivering regulated outputs between 3.3-20 V and 200 kHz constant frequency operation. Burst ModeÃ-® reduces no-load quiescent current to 100 Ã-µA. Converter incorporates dual internal 500 mA switches, which seamlessly switch between step-down and step-up voltage conversion. Programmable soft-start helps...
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Li-Ion Battery Charger operates from any wall adapter.
Model LTC4002 standalone, switch-mode, 1-cell battery charger, with operating supply as high as 24 V, eliminates need for input transient protection. Low 4.7 V input supply and low dropout operation guarantees continuous charging of 4.2 V batteries from 5 V wall adapters. Charger includes automatic shutdown, battery preconditioning, battery temperature sensing, end-of-charge indicator, and 3 hr...
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Buck-Boost DC/DC Converter delivers up to 1 A.
Model LTC3441 synchronous, fixed frequency converter offers efficiencies up to 95%, optimizing battery run time for battery-powered applications. It operates from input voltage of 2.4-5.5 V and can provide up to 1 A at fixed output voltage between 2.4-5.25 V. Buck-Boost topology allows unit to operate above, below, and equal to output voltage with single inductor. Operating frequency is set...
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