Product Overview
LM723CN Precision Linear Voltage Regulator 2V-37V DIP-14 IC
Condition
Unused new old stock (NOS). Authentic National Semiconductor production with molded mark BD on underside and top-side markings legible: wave logo, M9406A+, and LM723CN. Physical leads are clean and straight with no solder residue.
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Product Overview
National Semiconductor LM723CN precision adjustable linear voltage regulator in a standard 14-pin dual in-line package (DIP-14). Designed for series, shunt, switching, or floating regulator configurations, the LM723 provides an internal 7.15V reference, adjustable output from 2V to 37V DC, and 150mA continuous internal output current. By pairing with an external NPN or PNP pass transistor, usable output current scales beyond 10A.
Key Features
- Output voltage adjustable from 2 V to 37 V DC
- Input voltage operating range up to 40 V DC
- Internal continuous output current capability of 150 mA
- Expands beyond 10 A output current when paired with an external pass transistor
- Internal 7.15 V typical reference voltage output
- 14-lead plastic dual in-line package (PDIP-14, NS package N14A)
- On-chip current limit and current sense inputs for overload protection
- Commercial operating temperature range: 0°C to +70°C
Applications
- Benchtop linear DC power supply designs requiring low ripple and adjustable output
- Restoring vintage audio gear, ham radio transceivers, and analog lab instruments
- High-current bench supply builds paired with 2N3055 or similar external pass transistors
- Maker prototyping and breadboard power distribution circuits needing stable reference regulation
Frequently Asked Questions
What is the difference between the LM723 and LM723C?
The LM723C represents the commercial temperature grade version rated for operation from 0°C to +70°C, while the standard LM723 covers the full military temperature range.
Can this IC deliver more than 150mA of current?
Yes. While internal pass transistors handle up to 150mA directly, external NPN or PNP power transistors can be driven to supply currents well exceeding 10A.
Why buy individual pieces instead of a bulk surplus lot?
You receive genuine, cleanly marked National Semiconductor components without having to buy surplus reels or mystery assortments of unknown age. More pieces cost less each, and the price-break table on this page shows what each quantity costs. Orders ship for an $8 flat rate, qualify for free shipping at $28, and depart our Idaho warehouse the same or next business day.
The quintessential workhorse of classic linear bench supplies, ready to hold line and load exactly where you dial them.
