LM317LM National Semiconductor, LM317LM Datasheet - Page 13

• Manufacturer Part Number: LM317LM
• Description: IC, ADJ LINEAR REG, 1.2V TO 37V, 8-SOIC
• Manufacturer: National Semiconductor

Specifications of LM317LM

• Primary Input Voltage: 40V
• Output Voltage Adjustable Range: 1.2V To 37V
• Dropout Voltage Vdo: 1.8V
• No. Of Outputs: 1
• No. Of Pins: 8
• Output Current: 100mA
• Voltage Regulator Type: Linear
• Topology: Standard
• Regulator Output Type: Adjustable
• Polarity Type: Positive
• Number Of Outputs: Single
• Input Voltage (min): 4.2V
• Input Voltage (max): 40V
• Output Voltage: 1.2 to 37V
• Package Type: SOIC N
• Load Regulation: 0.5%
• Line Regulation: 0.04%/V
• Operating Temp Range: -40C to 125C
• Operating Temperature Classification: Automotive
• Pin Count: 8
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Q1, Q2: NSD134 or similar
C1, C2: 1μF, 200V mylar**
*Heat sink
**Mylar is a registered trademark of DuPont Co.
A1 = LM301A, LM307, or LF13741 only
Tracking Regulator
Precision High Voltage Regulator
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R1, R2 = matched resistors with good TC tracking
Trim Procedure:
—If V
—Then if V
—Then if V
This will trim the output to well within ±1% of 22.00 V
expense or uncertainty of a trim pot (see LB-46). Of course, this technique
can be used at any output voltage level.
OUT
Regulator With Trimmable Output Voltage
is 23.08V or higher, cut out R3 (if lower, don't cut it out).
OUT
OUT
is 22.47V or higher, cut out R4 (if lower, don't).
is 22.16V or higher, cut out R5 (if lower, don't).
DC
, without any of the
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