# List of LM-series integrated circuits

The following is a list of LM-series integrated circuits. Many were among the first analog integrated circuits commercially produced since late 1965; some were groundbreaking innovations. As of 2007, many are still being used. The LM series originated with integrated circuits made by National Semiconductor. The prefix LM stands for linear monolithic, referring to the analog components integrated onto a single piece of silicon. Because of the popularity of these parts, many of them were second-sourced by other manufacturers who kept the sequence number as an aid to identification of compatible parts. Several generations of pin-compatible descendants of the original parts have since become de facto standard electronic components.

## Operational amplifiers

| Part number | Predecessor | Obsolete? | Description |
| LM10 | | | Op-amp with an adjustable voltage reference |
| LM12 | | Yes | High-power op-amp |
| LM101 LM201 LM301 | μA709 | | General-purpose op-amp with external compensation |
| LM107 LM207 LM307 | μA709 | Yes | General-purpose op-amp |
| LM108 LM208 LM308 | | Yes | Precision op-amp |
| LM112 LM212 LM312 | | Yes | Micropower op-amp with external compensation |
| LM118 LM218 LM318 | | | Precision, fast general-purpose op-amp with external compensation |
| LM321 | | | Low-power op-amp |
| LM124 LM224 LM324 LM2902 | | | Quadruple wide-supply-range op-amps |
| LM143 LM343 | | Yes | High-voltage operational amplifier |
| LM144 LM344 | | Yes | High-voltage, high-slew-rate operational amplifier |
| LM146 LM346 | | only LM146 | Programmable quadruple op-amps |
| LM148 LM248 LM348 | | | General-purpose quadruple op-amps |
| LM158 LM258 LM358 LM2904 | | | Low-power, wide-supply-range dual op-amps |
| LM392 | | | Low-power dual op-amps and comparator |
| LM432 | LM358, LMV431 | | Dual op-amps with fixed 2.5 V reference |
| LM611 | | | Op-amp with an adjustable voltage reference |
| LM614 | | | Quadruple op-amps with an adjustable voltage reference |
| LM675 | | | Power op-amp with a maximal current output of 3 amperes |
| LM709 | | Yes | General-purpose op-amp |
| LM741 | LM709 | | General-purpose op-amp. Widely used. |
| LM747 | | Yes | General-purpose dual op-amp. |
| LM748 | | | General-purpose op-amp with external compensation |
| LM833 | | | Dual high-speed audio operational amplifiers |
| LM837 | | | Low-noise quadruple op-amps |

## Differential comparators

| Part number | Predecessor | Obsolete? | Description |
| LM306 | | | High speed differential comparator with strobes |
| LM111 LM211 LM311 | LM106 LM710 | | High speed differential comparator with strobes |
| LM119 LM219 LM319 | LM711(?) | | High speed dual comparators |
| LM139 LM239 LM339 LM2901 | | | Quadruple wide supply range comparators |
| LM160 LM360 | μA760 | | High speed comparator with complementary TTL outputs |
| LM161 LM361 | | only LM161 | High speed comparator with strobed complementary TTL outputs |
| LM193 LM293 LM393 LM2903 | | | Dual wide supply range comparators |
| LM397 | | | General purpose comparator with an input common mode that includes ground |
| LM613 | | | Dual op-amps, dual comparators and adjustable reference |

## Current-mode (Norton) amplifiers

| Part number | Predecessor | Obsolete? | Description |
| LM359 | | | Dual, high speed, programmable current mode (Norton) amplifiers |
| LM2900 LM3900 | | | Quad, current mode (Norton) amplifiers. Rail to Rail output. |

## Instrumentation amplifiers

| Part number | Predecessor | Obsolete? | Description |
| LM363 | | Yes | Precision instrumentation amplifier |

## Audio amplifiers

| Part number | Obsolete? | Description |
| LM377 | Yes | Dual 2 W audio power amplifier |
| LM378 | Yes | Dual 4 W audio power amplifier |
| LM379 | Yes | Dual 6 W audio power amplifier |
| LM380 | | 2.5 W audio power amplifier (fixed 34 dB gain) |
| LM383/LM2002 | Yes | 8 W audio power amplifier |
| LM384 | | 5 W audio power amplifier (fixed 34 dB gain) |
| LM1875 | | 20 W audio power amplifier (up to 90 dB gain) |
| LM1876 | | Dual 20 W audio power amplifier with Mute and Standby Modes (up to 90 dB gain) |
| LM386 | | Low voltage audio power amplifier |
| LM389 | Yes | Low voltage audio power amplifier (same as LM386) with 3 NPN transistors |
| LM3875 | Yes | High-performance 56 W audio power amplifier |
| LM3886 | | High-performance 68 W audio power amplifier |

## Precision reference

| Part number | Predecessor | Obsolete? | Description |
| LM113 LM313 | | only LM313 | Temperature compensated Zener reference diode, 1.22 V breakdown voltage |
| LM329 | | | Temperature compensated Zener reference diode, 6.9 V breakdown voltage |
| LM136 LM236 LM336 | | | 2.5 V or 5 V Zener reference diode with temperature coefficient trimmer |
| LM368 | | Yes | 2.5 V precision voltage reference |
| LM169 LM369 | LM199 | Yes | 2.5 V temperature compensated precision voltage reference |
| LM185 LM285 LM385 | | | Fixed (1.2 V, 2.5 V) or adjustable micropower voltage reference |
| LM129 LM329 | | LM129 | Fixed (6.95 V) buried zener voltage reference. |
| LM199 LM299 LM399 | | LM199 & LM299 | Fixed (6.95 V) voltage reference, with built in heater (oven controlled version of LM329). |
| LM431 | | | Adjustable precision Zener shunt regulator (2.5 V-36 V) |

## Voltage regulators

| Part number | Predecessor | Obsolete? | Description |
| LM105 LM305 | LM100 | | Adjustable positive voltage regulator (4.5 V-40 V) |
| LM109 LM309 | | | 5-volt regulator (up to 1 A) |
| LM117 LM317 | | | Adjustable 1.5 A positive voltage regulator (1.25 V-37 V) |
| LM120 LM320 | | | Fixed 1.5 A negative voltage regulator (-5 V, -12 V, -15 V) |
| LM123 LM323 | | | Fixed 3 A, 5-volt positive voltage regulator |
| LM325 | | Yes | Dual ±15-volt voltage regulator |
| LM330 | | | 5-volt positive voltage regulator, 0.6 V input-output difference |
| LM333 | | Yes | Adjustable 3 A negative voltage regulator (-1.2 V to -32 V) |
| LM137 LM237 LM337 | | | Adjustable 1.5 A negative voltage regulator (-1.2 V to -37 V) |
| LM138 LM338 | | | Adjustable 5 A voltage regulator (1.2 V-32 V) |
| LM140 LM340 | LM78xx | | 1 A positive voltage regulator (5 V, 12 V, 15 V), can be adjustable |
| LM341 LM78Mxx | | | 0.5 A protected positive voltage regulators (5 V, 12 V, 15 V) |
| LM145 LM345 | | Yes | Fixed 3 A, -5-volt negative voltage regulator |
| LM150 LM350 | | only LM150 | Adjustable 3 A, positive voltage regulator (1.2 V-33 V) |
| LM723 | | | Low power variable voltage regulator |
| LM78xx | | | Fixed 1 A positive voltage regulators (5 V-24 V) |
| LM79xx | | | Fixed 1.5 A negative voltage regulators (-5 V, -12 V, -15 V) |
| LM2576 | | | Fixed and adjustable 3 A buck/buck-boost switching regulators. output range (1.23v to 37v). |
| LM1524 LM2524 LM3524 | | | Regulating pulse width modulator. |
| LM2596 | | | Fixed and adjustable 3 A buck switching regulators. f=150 kHz. |
| LM2679 | | | Fixed and adjustable 5 A buck switching regulators. f=260 kHz. |
| LM61430-q1 | | | 3-V to 36-V, 3-A, Low-EMI Synchronous Step-Down Converter. f=0.2-2 MHz. |
| LM3281 | | | 3V to 5V, 1-A, DC-DC Step-Down Converter. 3.3V-OUT(fixed) f=6 MHz. 94% efficiency at 300mA load |

## Voltage-to-frequency converters

| Part number | Predecessor | Obsolete? | Description |
| LM231 LM331 | | | Precision voltage-to-frequency converter (1 Hz-100 kHz) |

## Current sources

| Part number | Predecessor | Obsolete? | Description |
| LM134 LM234 LM334 | | | Adjustable current source (1 μA-10 mA) |

## Temperature sensors and thermostats

| Part number | Obsolete? | Description |
| LM19 | No | Temperature sensor, 2.5 °C accuracy |
| LM20 | No | Temperature sensor, 1.5 °C accuracy |
| LM26 | No | Factory preset thermostat, 3 °C accuracy |
| LM27 | No | Factory preset thermostat (120 °C-150 °C), 3 °C accuracy |
| LM34 | No | Precision Fahrenheit temperature sensor, 0.5 °F accuracy |
| LM35 | No | Precision Celsius temperature sensor, 0.25 °C accuracy |
| LM45 | No | Precision Celsius temperature sensor, 2 °C accuracy |
| LM50 | No | Single supply Celsius temperature sensor, 2 °C accuracy |
| LM56 | No | Dual output resistor programmable thermostat with analog temperature sensor |
| LM60 LM61 LM62 | No | Single supply Celsius temperature sensors (The difference between the components is the voltage scale) |
| LM75A | No | Digital temperature sensor and programmable thermostat. |
| LM135 LM235 LM335 | No | Precision Zener temperature sensor, 1 °C accuracy |

## Others

| Part number | Obsolete? | Description |
| LM102 LM202 LM302 | Yes | Voltage Followers |
| LM110 LM210 LM310 | Yes | Voltage Followers |
| LM194 LM394 | Yes | Supermatched NPN Transistor Pair |
| LM566 | Yes | Voltage Controlled Oscillator (VCO) |
| LM567 | No | Tone decoder |
| LM3909 | | LED Flasher/Oscillator |
| LM3914 | | Bargraph display driver (linear steps) |
| LM3915 | | Bargraph display driver (logarithmic steps) |
| LM3916 | Yes | Bargraph display driver (VU-meter steps) |
| LM13600 | Yes | Operational Transconductance Amplifier (OTA) |
| LM13700 | | Operational Transconductance Amplifier (OTA) |