LM350 - 3-Amp Adjustable Regulator
Datasheet Packaging Samples & Pricing Reliability Application Notes Knowledge Base

Features
Adjustable output down to 1.2V
Guaranteed 3A output current
Guaranteed thermal regulation
Output is short circuit protected
Current limit constant with temperature
P+ Product Enhancement tested
86 dB ripple rejection
Guaranteed 1% output voltage tolerance (LM350A)
Guaranteed max. 0.01%/V line regulation (LM350A)
Guaranteed max. 0.3% load regulation (LM350A)

General Description


The LM150 series of adjustable 3-terminal positive voltage regulators is capable of supplying in excess of 3A over a 1.2V to 33V output range. More...


Applications


Adjustable power supplies
Constant current regulators
Battery chargers
  Typical Application
click for larger image


ParametersValues
Output Current 3000 mA
Output Voltage Undefined Volt
Input Min Voltage 4.2 Volt
Input Max Voltage 35 Volt
Adjustable Output Yes
On/Off Pin No
Error Flag No
Temperature Min 0 deg C
Temperature Max 125 deg C
RegType Linear Regulator
Feedback Voltage 1.25 Volt


Typical Performance


click for larger image


  Also Recommended
LM25576Switching Operation With Much Higher Effieiency , Wider Voltage Range
LM2676No Heatsink Required
LP38690Lower Dropout Voltage
LP38692Lower Dropout Voltage , Shutdown Mode
LM2650No Heatsink Required, SOIC Wide Package
Additional Resources
Application Notes


Connection Diagram


*click for larger image



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LM150/LM350A/LM350 3-Amp Adjustable Regulators 408
Kbytes
3-Mar-99 Download
LM150/LM350A/LM350 3-Amp Adjustable Regulators (Japanese)
214 Kbytes   Download

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Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders
Budgetary PricingStd
Pack
Size
Package
Marking
Format
TypePinsSpec.MSL
Rating
Peak
Reflow
RoHS
Report
CAD
Symbols
WeeksQtyQty$US each
LM350ATTO-2203NOPB
STD
1
1
NA
NA
RoHS Download Full productionN/A
Samples
Buy Now
1K+$1.63rail
of
45
NSUZXYTTE#
LM350AT
P+
12 weeks1000
LM350TTO-2203NOPB
STD
1
1
NA
NA
RoHS Download Full productionN/A
Samples
Buy Now
1K+$0.80rail
of
45
NSUZXYTTE#
LM350T P+
12 weeks1000
LM350K STEELTO-32NOPB
STD
1
1
NA
NA
RoHS Download Full productionN/A
 
Buy Now
1K+$22.00tray
of
50
NS
ZXYTTE#
LM350K
STEELP+
12 weeks500
LM350A MWCWaferFull productionN/A
  CALLwafer jar
of
N/A
-
6 weeksN/A

General Description


The LM150 series of adjustable 3-terminal positive voltage regulators is capable of supplying in excess of 3A over a 1.2V to 33V output range. They are exceptionally easy to use and require only 2 external resistors to set the output voltage. Further, both line and load regulation are comparable to discrete designs. Also, the LM150 is packaged in standard transistor packages which are easily mounted and handled.

In addition to higher performance than fixed regulators, the LM150 series offers full overload protection available only in IC's. Included on the chip are current limit, thermal overload protection and safe area protection. All overload protection circuitry remains fully functional even if the adjustment terminal is accidentally disconnected.

Normally, no capacitors are needed unless the device is situated more than 6 inches from the input filter capacitors in which case an input bypass is needed. An output capacitor can be added to improve transient response, while bypassing the adjustment pin will increase the regulator's ripple rejection.

Besides replacing fixed regulators or discrete designs, the LM150 is useful in a wide variety of other applications. Since the regulator is "floating" and sees only the input-to-output differential voltage, supplies of several hundred volts can be regulated as long as the maximum input to output differential is not exceeded, i.e., avoid short-circuiting the output.

By connecting a fixed resistor between the adjustment pin and output, the LM150 can be used as a precision current regulator. Supplies with electronic shutdown can be achieved by clamping the adjustment terminal to ground which programs the output to 1.2V where most loads draw little current.

The part numbers in the LM150 series which have a K suffix are packaged in a standard Steel TO-3 package, while those with a T suffix are packaged in a TO-220 plastic package. The LM150 is rated for -55°C < TJ < +150°C, while the LM350A is rated for -40°C < TJ < +125°C, and the LM350 is rated for 0°C < TJ < +125°C.

Reliability Metrics


Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LM350A MWCSLM04404600353250011002356520
LM350ATSLM04404600353250011002356520
LM350TSLM04404600353250011002356520

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.


More Application Notes


TitleSize in Kbytes Date Click link below to Download
AN-1407: Application Note 1407 AN-1407 LM3502/03 Evaluation Board 519
Kbytes
18-Jul-06 Download
AN-1407 (Chinese): Application Note 1407 AN-1407 LM3502/03 Evaluation Board
280 Kbytes  
AN-460: Application Note 460 LM34/LM35 Precision Monolithic Temperature Sensors 306
Kbytes
20-Sep-02 Download
AN-460 (Japanese): Application Note 460 LM34/LM35 Precision Monolithic Temperature Sensors
322 Kbytes   Download
AN-298: Application Note 298 Isolation Techniques for Signal Conditioning 379
Kbytes
2-Oct-02 Download
AN-D: Application Note D Versatile Monolithic V/Fs can Compute as Well as Convert with High Accuracy 248
Kbytes
3-Oct-02 Download
AN-C: Application Note C V/F Converter ICs Handle Frequency-to-Voltage Needs 187
Kbytes
3-Oct-02 Download
AN-1309: Application Note 1309 LM3500 Evaluation Board 35
Kbytes
12-Feb-04 Download
AN-1594: Application Note 1594 LM3509 Evaluation Board 1020
Kbytes
5-Jun-07 Download
AN-1318: Application Note 1318 LM3501 Evaluation Board 36
Kbytes
12-Feb-04 Download
AN-1593: Application Note 1593 LM3508 Evaluation Board 612
Kbytes
5-Jun-07 Download
AN-258: Application Note 258 Data Acquisition Using the ADC0816 and ADC0817 8-Bit A/D Converter with On-Chip 16 Channel Multiplexer 683
Kbytes
4-Oct-04 Download
AN-278: Application Note 278 Designing with a New Super Fast Dual Norton Amplifier 259
Kbytes
3-Oct-02 Download
AN-247: Application Note 247 Using the ADC0808/ADC0809 8-Bit µP Compatible A/D Converters with 8-Channel Analog Multiplexer 547
Kbytes
3-Oct-02 Download
AN-116: Application Note 116 Use the LM158/LM258/LM358 Dual, Single Supply Op Amp 101
Kbytes
1-Oct-02 Download
AN-946: Application Note 946 High-Efficiency 3A Battery Chargers Use LM2576 Regulators 109
Kbytes
3-Oct-02 Download
AN-946 (Japanese): Application Note 946 High-Efficiency 3A Battery Chargers Use LM2576 Regulators
72 Kbytes   Download
AN-284: Application Note 284 Single-Supply Applications of CMOS MICRODACs 121
Kbytes
3-Oct-02 Download
AN-1852: Application Note 1852 Designing With pH Electrodes 190
Kbytes
25-Sep-08 Download
AN-274: Application Note 274 CMOS A/D Converter Interfaces Easily with Many Microprocessors 73
Kbytes
3-Oct-02 Download

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[Information as of 8-Nov-2009]