LM340 DATASHEET PDF
LM–XX. Input. Cin*. µF. CO**. Output. 1. MOTOROLA ANALOG IC DEVICE DATA. Three-Terminal Positive. Fixed Voltage Regulators. This family of fixed. the LM is available in the SOT package, as well .. †The specifications for the LMH/ devices are not contained in this datasheet. Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2All trademarks are the property of their respective.
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The input capacitor is not overly critical when the regulator is fed from an already well decoupled system bus.
Series 3-Terminal Positive Regulators
Output 1 2 3 Heatsink surface is connected to Pin 2. An integrated circuit or monolithic integrated circuit also referred to as an ic, a chip, or a microchip is a set of electronic circuits on one small plate chip of semiconductor material, normally silicon. The LM datasheet provides clear guidance on the essential and desirable characteristics of the input and output capacitors. Absolute maximum ratings note 1 if militaryaerospace specified devices are required, please contact the national semiconductor sales office distributors for availability and specifications.
This family of fixed voltage regulators are monolithic integrated circuits. Ordering information heatsink surface connected to pin 2.
The lmh and lmk may also be procured as jan devices on slash sheet jm Still, I’d like to know for sure. Only slightly more complex – good Sueful – stack exchange Useful Lots of related pictures And one datashret note, did you refer to the ripple voltage on the cap being large even for small currents as an inherent issue due to the small size? XX these two digits of the type number indicate.
LM Motorola Three-Terminal Positive Voltage Regulators ChipFind Datasheet Archive |
I’m still a little puzzled about why they specifically call out tantalum so much, but your answer makes clear that I can overlook this. Output capacitor ESR required for stability: The overall feedback is described by a transfer function involving the components involved.
Required ESR is stated as. These three—terminal regulators employ internal current limiting, thermal shutdown, and safe—area compensation.
Lm datasheet, lm pdf, lm data sheet, lm manual, lm pdf, lm, datenblatt, electronics lm, alldatasheet, free, datasheet, datasneet, data sheet. The ESR of the output capacitor should range between 0. This is an extremely wide and unusual requirement. I’ve read this so many times – “maintain regulator stability”. Would the output oscillate with high ripple or be undefined or what exactly would happen?
LM(TO-3) NTE Equivalent NTEK VOLTAGE REGULATOR PO – Wholesale Electronics
MattYoung And how long do you think that edit would last? Russell McMahon k 9 Here are some typical new maximum ESRs for new aluminum wet electrolytic capacitors. The ESR of satasheet output capacitor will cause loop instability if it is too high or too low.
If adequate heat sinking is provided, they can deliver over 1. Tantalum offers OK cost per capability at capacitances from about 10 uF up. MattYoung Actually yes, it is.
Lm datasheet, lm pdf, pinouts, circuit texas. Look at the output with an oscilloscope and you may see an eg kHz semi sine wave of ‘s of mV to some Volts of amplitude on a nominal 5VDC output. With the price of dataasheet these days I would recommend using one of your electrolytics with a small ceramic capacitor in parallel – say nF.
There are various factors and cost is one. This requirement could be met by an aluminum wet electrolytic cap or a ceramic cap. Peter Mortensen 1, 3 14 Home Questions Tags Users Unanswered.
The lmalmlm78xxc monolithic series is available in the to plastic power package, and the lm The acceptable range of ESR plotted versus load current is shown in Figure BUT anything can happen. Smoke, flame, noise, bad smell and explosion all optional – I have seen one tantalum cap do all of these in turn: The second group are what would be used with Cadj bypassed and could be used anyway – ESRs are far away from limits in both directions.
The active regulator can work to reduce this ripple, but it is nice to not have your filter capacitor adding to the problem you want it to fix. This series of devices can be used with a series—pass transistor to boost output current capability at the nominal output voltage.
ESR is a “Goldilocks requirement”: Sign up using Facebook.