National Semiconductor Corp.
Santa Clara, CA 95051
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Buck Regulator offers PWM switching frequency to 500 kHz.
Integrating 75 V N-channel MOSFET and emulated, current-mode PWM, Model LM5005 steps down input voltage from 7-75 V to produce regulated 2.5 A power supply, adjustable from 1.225-65 V. Current-mode control provides inherent line voltage feed-forward and loop compensation. Bi-directional oscillator synchronization pin allows multiple LM5005 regulators to self-synchronize or switch synchronously...
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Linear Regulator powers analog and RF signal-path ICs.
Housed in 4-bump micro SMD package, miniature 100 mA low dropout Model LP5900A provides output voltages from 1.5 3.3 V with Ã-
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LED Driver suits handheld devices.
Housed in micro SMD package measuring 3 x 3 x 0.6 mm, Model LP3954 integrates 2 backlight drivers, dual RGB LED controller, Flash LED driver, and analog-to-digital converter on single chip. Unit drives 2 separately controlled white LED backlights for main and sub-display, and in case of single large display, units can be combined to drive up to 6 LEDs. Stand-alone features include backlight...
Read More »High-Speed Video Multiplexers achieve high bandwidths.
Model LMH6574 buffered 4:1 video MUX amplifier achieves 400 MHz-3 db bandwidth and 150 MHz 0.1 dB gain flatness to support switching of high video resolutions. It offers 8 ns switching time and 85 dB of channel-to-channel isolation. Buffered 2:1 RGB MUX amplifier, Model LMH6572, achieves 300 MHz-3 dB bandwidth and 60 MHz 0.1 dB gain flatness, which supports RGB switching. It features 10 ns...
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DC-DC Converter is optimized for RF power amplifiers.
Available in 10-pin, lead-free package, Model LM3200 features analog voltage-control input that dynamically controls output voltage of device depending on power requirements of power amplifier. High switching frequency of 2 MHz allows it to use small external components. Unit steps down input voltage from 2.7-5.5 V to variable output voltage from 0.8-3.6 V. It is suited for smart phones, wireless...
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Color LED Drivers synchronize lighting and audio.
Model LP3950 synchronizes LEDs based on music's amplitude or frequency response. Two RGB LED outputs can drive up to 300 mA output current for color LEDs or camera flash LED. Offering 16 colors with 8 brightness values, Model LP3942 features charge pump, SPI interface, and 2 separately programmable outputs. Featuring magnetic boost converter and SPI interface, Model LP3931 allows each output port...
Read More »Chips extend reach and drive of analog interfaces.
Dual 15-66 MHz, 18-bit LVDS serializer, SCAN921821, offers programmable pre-emphasis to 6 dB, IEEE 1149.1 JTAG, and 15 kV ESD protection. Each serializer handles payloads to 1.188 Gbps. In addition to JTAG, SCAN90CP02, 1.5 Gbps 2 x 2 LVDS non-blocking crosspoint switch features 6.5+ kV ESD protection and programmable pre-emphasis that operates at speeds to 1.5 Gpbs. Model DS90LV110T 1:10 LVDS...
Read More »Low-Dropout Regulators power DSPs, FPGAs, and ASICs.
Series LP385x CMOS LDO regulators feature output currents of 1.5 and 3.0 A, logic-controlled on/off, error flag or separate sense pin, over-temperature, and over-current protection. Typical dropout voltage is 240 mV at 1.5 A and 390 mV at 3.0 A load, allowing designers to generate high-eeficiency 2.5 V output from 3.3 V supply up to 2.5 A. Output-voltage accuracy is Ã-
Read More »Linear Regulators offer low dropout.
Models LP3883/2/1 CMOS dual-input, voltage regulators enable high efficiency linear conversion from 1.8-1.5 V and 1.2 V for notebook and set-top box applications, while consuming low quiescent current of only 3 mA. Power input may be fed independently from high current supply facilitating conversion from input rails of less than 2.5 V. Dropout voltage for Models LP3883/2/1 is typically 210 mV/110...
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SerDes Chipset exceeds 6 Gbps performance.
Model DS90CR485/6 serializer/deserializer (SerDes) chipset leverages low voltage differential signaling (LVDS) technology. Each model supports 48-bit parallel bus interface and serializes as many as 48 data bits, between 66 and 133 MHz, onto 8 differential LVDS pairs; clock is sent over additional ninth LVDS pair. Chipsets offer adjustable transmitter pre-emphasis, DC balance, and receiver deskew...
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