LINEAR Manuals

This document mainly introduces the LT1580/LT1580-2.5 low dropout regulator, which has a low dropout voltage of 540mV and a fast transient response.

The LT1203/LT1205 150MHz Video Multiplexers are wideband 2-input video multiplexers designed for pixel switching and broadcast quality routing. The LT1205 is a dual version that is configured as a 4-input, 2-output multiplexer. These multiplexers act as SPDT video switches with 10ns transition times at toggle rates up to 30MHz. The –3dB bandwidth is 150MHz and 0.1dB gain flatness is 30MHz. Many parts can be tied together at their outputs by using the enable feature which reduces the power dissipation and raises the output impedance to 10MΩ. Output capacitance when disabled is only 3pF and the LT1203 peaks less than 3dB into a 50pF load. Channel crosstalk and disable isolation are greater than 90dB up to 10MHz. An on-chip buffer interfaces to fast TTL or CMOS logic. Switching transients are only 50mV with a 25ns duration. The LT1203 and LT1205 outputs are protected against shorts to ground. The LT1203/LT1205 are manufactured using Linear Technology’s proprietary complementary bipolar process. The LT1203 is available in both the 8-lead PDIP and SO package while the LT1205 is available in a 16-lead SO package.

The REF-01/REF-02 are precision 10V and 5V bandgap references which provide stable output voltages over a wide range of operating conditions. Output voltage is accurate to ±0.3% with a low 5ppm/°C typical temperature coefficient.

The LTC1290 is a data acquisition component from Linear Technology Corporation that uses LTCMOS TM switched capacitor technology to perform either 12-bit unipolar or 11-bit plus sign bipolar A/D conversions. The 8-channel input multiplexer can be configured for either single-ended or differential inputs (or combinations thereof).

LT3080 1 3080f Adjustable 1.1A Single Resistor Low Dropout Regulator

The LTC1099 is a high speed microprocessor compatible 8-bit analog-to-digital converter (A/D) from Linear Technology Corporation. It has a conversion rate of 2.5µs and can sample input signals up to 156kHz 5VP-P.

The LTC ®1871 is a wide input range, current mode, boost, flyback or SEPIC controller that drives an N-channel power MOSFET and requires very few external compo- nents.

LTC1091/LTC1092/LTC1093/LTC1094 is a 10-bit serial I/O data acquisition system with programmable unipolar/bipolar conversions, differential/single-ended multiplexer configurations, sample-and-holds, single supply 5V, 10V or ±5V operation, direct 3- or 4-wire interface to most MPU serial ports and all MPU parallel I/O ports, analog inputs common mode to supply rails, resolution: 10 bits, total unadjusted error (A Grade): ±1LSB over temp, fast conversion time: 20µs, low supply current LTC1091: 3.5mA Max, 1.5mA Typ LTC1092/LTC1093/LTC1094: 2.5mA Max, 1mA Typ.

This document is about LT1766/LT1766-5, LT1766/LT1766-5 are 200kHz monolithic buck switching regulators that accept input voltages up to 60V. It includes a high efficiency 1.5A, 0.2Ω switch, as well as all the necessary oscillator, control and logic circuitry. A current mode control architecture delivers fast transient response and excellent loop stability. Special design techniques and a new high voltage process achieve high efficiency over a wide input range. By using the output to bias the circuitry and by utilizing a supply boost capacitor to saturate the power switch, efficiency is maintained over a wide output current range. Patented circuitry* maintains peak switch current rating.

LTC1147-3.3 and LTC1147-5/LTC1147L are high-efficiency step-down switching regulator controllers with features such as wide input voltage range, high efficiency, low standby current, and short-circuit protection.

LT1777 is a low noise step-down switching regulator designed by Linear Technology. It features programmable di/dt limit, internally limited dv/dt, high input voltage(48V), 700mA peak switch rating, true current mode control, 100kHz fixed operating frequency, synchronizable to 250kHz, low supply current in shutdown(30µA), low thermal resistance 16-pin SO package.

The LT1424-5 is a monolithic high power switching regulator specifically designed for the isolated flyback topology. No “third winding” or optoisolator is required; the integrated circuit senses the isolated output voltage directly from the primary side flyback waveform. A high current, high efficiency switch is included on the die along with all oscillator, control and protection circuitry. The LT1424-5 operates with input supply voltages from 3V to 20V and draws only 7mA quiescent current. It can deliver up to 400mA at 5V with no external power devices. By utilizing current mode switching techniques, it provides excellent AC and DC line regulation. The LT1424-5 has a number of features not found on other switching regulator ICs. Its unique control circuitry can maintain regulation well into discontinuous mode. Load compensation circuitry allows for improved load regulation. An externally activated shutdown mode reduces total supply current to 20µA typical for standby operation.

The LT1725 is a monolithic switching regulator controller specifically designed for the isolated flyback topology. It drives the gate of an external MOSFET and is generally powered from a third transformer winding. These features allow for an application input voltage limited only by external power path components. The third transformer winding also provides output voltage feedback information, such that an optoisolator is not required. Its gate drive capability coupled with a suitable external MOSFET can deliver load power up to tens of watts. The LT1725 has a number of features not found on most other switching regulator ICs. By utilizing current mode switching techniques, it provides excellent AC and DC line regulation. Its unique control circuitry can maintain regulation well into discontinuous mode in most applications. Optional load compensation circuitry allows for improved load regulation. An optional undervoltage lockout pin halts operation when the application input voltage is too low. An optional external capacitor implements a soft-start.