LM350 Datasheet, PDF (1/10 Pages) Motorola, Inc – THREE.TERMINAL ADJUSTABLE POSITIVE VOLTAGE REGULATOR

LM350
3.0 A, Adjustable Output,
Positive Voltage Regulator
The LM350 is an adjustable three−terminal positive voltage
regulator capable of supplying in excess of 3.0 A over an output
voltage range of 1.2 V to 33 V. This voltage regulator is
exceptionally easy to use and requires only two external resistors to
set the output voltage. Further, it employs internal current limiting,
thermal shutdown and safe area compensation, making it essentially
blow−out proof.
The LM350 serves a wide variety of applications including local,
on card regulation. This device also makes an especially simple
adjustable switching regulator, a programmable output regulator, or
by connecting a fixed resistor between the adjustment and output, the
LM350 can be used as a precision current regulator.
Features
• Guaranteed 3.0 A Output Current
• Output Adjustable between 1.2 V and 33 V
• Load Regulation Typically 0.1%
• Line Regulation Typically 0.005%/V
• Internal Thermal Overload Protection
• Internal Short Circuit Current Limiting Constant with Temperature
• Output Transistor Safe Area Compensation
• Floating Operation for High Voltage Applications
• Standard 3−lead Transistor Package
• Eliminates Stocking Many Fixed Voltages
• Pb−Free Packages are Available*
http://onsemi.com
THREE−TERMINAL
ADJUSTABLE POSITIVE
VOLTAGE REGULATOR
TO−220
T SUFFIX
PLASTIC PACKAGE
CASE 221AB
1
2
3
Pin 1. Adjust
2. V_out
3. V_in
Heatsink surface is connected to Pin 2.
MARKING DIAGRAM
V_in
LM350
C_in*
0.1mF
I_{Adj Adjust}
v_out
R₁
240
+ _CO**
1mF
LM
350T
AWLYWWG
R₂
A
= Assembly Location
WL = Wafer Lot
Y
= Year
WW = Work Week
G
= Pb−Free Device
* = C_in is required if regulator is located an appreciable distance from power supply filter.
** = C_O is not needed for stability, however, it does improve transient response.
ǒ Ǔ Vout + 1.25 V
1
)
R2
R1
) IAdj R2
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 3 of this data sheet.
Since I_Adj is controlled to less than 100 mA, the error associated with this term is negligible in most applications
Figure 1. Simplified Application
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques Reference
Manual, SOLDERRM/D.
© Semiconductor Components Industries, LLC, 2006
1
August, 2006 − Rev. 4
Publication Order Number:
LM350/D