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Featured National Semiconductor manuals
National Semiconductor LM117/LM317A/LM317 Adjustable Regulator Datasheet
The LM117 series of adjustable 3‑terminal positive voltage regulators provides up to 1.5 A output over a 1.2 V to 37 V range. They require only two external resistors to set the output voltage and include built‑in current limit, thermal overload and safe‑area protection. The devices are offered in a variety of TO‑3, TO‑220, TO‑263, SOT‑223, TO‑39, TO‑252 and LCC packages.
The datasheet details absolute maximum ratings, electrical characteristics, typical performance curves and application hints such as recommended input and output capacitors, ripple‑rejection techniques, and heatsink calculations. Ordering information and package markings are also provided.
Covers: General Description · Features · Typical Applications · Package Options · Absolute Maximum Ratings · Electrical Characteristics
National Semiconductor LM117/LM317A/LM317 Adjustable Regulator Datasheet
The LM117 series of adjustable 3‑terminal positive voltage regulators provides up to 1.5 A output current over a 1.2 V to 37 V range. They require only two external resistors to set the output voltage and include built‑in overload protection, current limit, thermal shutdown and safe‑area protection. The devices are offered in a variety of TO‑3, TO‑220, TO‑263, SOT‑223, TO‑39, TO‑252 and LCC packages.
The datasheet details absolute maximum ratings, electrical characteristics, typical performance curves, and application hints such as recommended input and output capacitors, ripple‑rejection techniques, and heatsink requirements. Package‑specific thermal resistance values and guidelines for minimizing line resistance are also provided.
Covers: General Description · Features · Package Options · Connection Diagrams · Absolute Maximum Ratings · Electrical Characteristics
National Semiconductor LM5035 PWM Controller Datasheet
The LM5035 half‑bridge controller/gate driver integrates high‑side and low‑side drivers capable of 2 A peak current and a supply voltage rating up to 105 V. It includes a programmable resistor‑set oscillator that can run to 2 MHz and can be synchronized to an external clock. The device provides line‑feed‑forward voltage mode control, UVLO, OVP, soft‑start, thermal shutdown and dual‑mode over‑current protection.
The datasheet details pin functions, absolute maximum ratings, electrical characteristics, thermal specifications, typical performance curves, package dimensions and example application circuits. It also contains regulatory and life‑support usage notes from National Semiconductor.
Covers: General Description · Pin Descriptions · Absolute Maximum Ratings · Electrical Characteristics · Thermal Shutdown · Typical Performance Characteristics
National Semiconductor LM117/LM317A/LM317 3-Terminal Adjustable Regulator Data Sheet
The LM117 series of adjustable 3‑terminal positive voltage regulators delivers up to 1.5 A over a 1.2 V to 37 V output range. They require only two external resistors to set the output voltage and include internal current‑limit, thermal‑overload, and safe‑area protection.
The document details absolute maximum ratings, electrical characteristics, typical performance data, application hints (including bypass capacitor recommendations and heatsinking), and physical dimensions for multiple package styles such as TO‑3, TO‑220, TO‑263, SOT‑223, and TO‑252.
Covers: General Description · Absolute Maximum Ratings · Electrical Characteristics · Typical Performance Characteristics · Application Hints · Physical Dimensions
Latest National Semiconductor manuals
National Semiconductor LM117/LM317A/LM317 Adjustable Regulator Datasheet
Datasheet 28 pages · 1 MB · ENDatasheet for the LM117/LM317A/LM317 3‑terminal adjustable positive voltage regulators covering specs, packages and application notes.
National Semiconductor LM117/LM317A/LM317 Adjustable Regulator Datasheet
Datasheet 28 pages · 1 MB · ENDatasheet for the LM117, LM317A and LM317 3‑terminal adjustable regulators with specifications, package options and application hints.
National Semiconductor LM5035 PWM Controller Datasheet
Datasheet 27 pages · 930 KB · ENThe LM5035 is a half‑bridge PWM controller with integrated high‑voltage drivers, programmable oscillator and extensive protection features.
National Semiconductor LM117/LM317A/LM317 3-Terminal Adjustable Regulator Data Sheet
Datasheet 26 pages · 643 KB · ENThe National Semiconductor datasheet provides specifications, ratings, and application notes for the LM117, LM317A, and LM317 adjustable 3‑terminal voltage…
National Semiconductor Amplifier Applications and Power Management Guide
Application Note 466 pages · 27.9 MB · ENA technical guide from National Semiconductor covering amplifier, audio, power management, portable power, and data conversion applications.
National MK-G20NR Manual
national semiconductor MM54C941/MM74C941 Octal Buffers/Line Receivers/Line Drivers with TRI-STATE Outputs handbook
This is a MM54C941�MM74C941 Octal Buffers�Line Receivers�Line Drivers with TRI-STATE Outputs product manual
national semiconductor MM54C914/MM74C914 Hex Schmitt Trigger with Extended Input Voltage handbook
The MM54C914-MM74C914 is a monolithic CMOS Hex Schmitt trigger with a special input protection scheme. This scheme allows the input voltage levels to exceed VCC or ground by at least 10V (VCC ≤ 25V to GND ≥ 25V), which is valuable for applications involving voltage level shifting or mismatched power supplies. The positive and negative-going threshold voltages, VTa and VTb, show low variation with respect to temperature (typ 0.0005V/°C at VCC = 10V), and the hysteresis, VTa - VTb ≥ 0.2 VCC, is guaranteed.
National Semiconductor MM54C90/MM74C90 4-Bit Decade Counter MM54C93/MM74C93 4-Bit Binary Counter handbook
The MM54C90 and MM74C90 are 4-bit decade counters, and the MM54C93 and MM74C93 are 4-bit binary counters. They are complementary MOS (CMOS) integrated circuits constructed with N- and P-channel enhancement mode transistors. The 4-bit decade counter can reset to zero or preset to nine by applying appropriate logic level on the R01, R02, R91 and R92 inputs. Also, a separate flip-flop on the A-bit enables the user to operate it as a divide-by-2, 5 or 10 frequency counter. The 4-bit binary counter can be reset to zero by applying high logic level on inputs R01 and R02, and a separate flip-flop on the A-bit enables the user to operate it as a divide-by-2, -8 or -16 divider. Counting occurs on the negative going edge of the input pulse. All inputs are protected against static discharge damage.
National Semiconductor MM74C908/MM74C918 Dual CMOS 30V Relay Driver handbook
This is an introduction to the MM74C908 and MM74C918, two dual high voltage drivers produced by National Semiconductor Corporation, which can work in the input voltage range of 3V to 18V, have high noise immunity, low output“ON” resistance, high voltage and high current characteristics.
National Semiconductor MM54C901/MM74C901/MM54C902/MM74C902/MM54C903/MM74C903/MM54C904/MM74C904 handbook
MM54C901 and MM74C901 are CMOS type hex non-inverting buffers, MM54C903 and MM74C903 are TTL type hex inverting buffers. They employ complementary MOS technology, which has a wide supply voltage range, low power consumption and high noise immunity. These buffers can directly interface PMOS to CMOS or TTL, and directly interface CMOS to TTL or CMOS, operating at a reduced VCC supply.
National Semiconductor MM54C89/MM74C89 64-Bit TRI-STATE handbook
This file is the English manual for MM54C89/MM74C89 64-Bit TRI-STATE Random Access Read-Write Memory
National Semiconductor MM54C86/MM74C86 Quad 2-Input EXCLUSIVE-OR Gate handbook
National Semiconductor MM54C85/MM74C85 4-Bit Magnitude Comparator handbook
National Semiconductor MM54C74/MM74C74 Dual D Flip-Flop handbook
MM54C74/MM74C74 is a dual D flip-flop. It is a monolithic complementary MOS (CMOS) integrated circuit constructed with N- and P-channel enhancement transistors. Each flip-flop has independent data, preset, clear and clock inputs and Q and Q outputs. The logic level present at the data input is transferred to the output during the positive going transition of the clock pulse. Preset or clear is independent of the clock and accomplished by a low level at the preset or clear input.
Which document do I need?
Datasheet
Ratings, dimensions and ordering codes, for selection and design work.
Application Note
How to use the product for one specific task, with worked examples.
Questions answered in National Semiconductor manuals
What input bypass capacitor is recommended for the LM117?
A 0.1 µF disc or 1 µF solid‑tantalum capacitor on the input is suitable for most applications.
From: National Semiconductor LM117/LM317A/LM317 Adjustable Regulator Datasheet
When is a heatsink required for the LM317 series?
A heatsink may be needed if the calculated thermal resistance exceeds the package rating, based on power dissipation and ambient temperature.
From: National Semiconductor LM117/LM317A/LM317 Adjustable Regulator Datasheet
How much ripple rejection can be achieved with the LM117?
The LM117 can achieve up to 80 dB ripple rejection when a 10 µF bypass capacitor is used on the adjustment terminal.
From: National Semiconductor LM117/LM317A/LM317 Adjustable Regulator Datasheet
What are the line‑regulation specifications for the LM317A?
The LM317A provides a line regulation of 0.01 % per volt.
From: National Semiconductor LM117/LM317A/LM317 Adjustable Regulator Datasheet
What is the maximum voltage the high‑side gate driver can handle?
The high‑side gate driver can operate with supply voltages up to 105 V.
From: National Semiconductor LM5035 PWM Controller Datasheet
What is the peak current rating for the gate drivers?
Both high‑side and low‑side gate drivers are rated for 2 A peak current.
From: National Semiconductor LM5035 PWM Controller Datasheet