Datasheet Texas Instruments LM138

Manufacturer	Texas Instruments
Series	LM138

Datasheets

Prices

Status

Packaging

Parametrics

Parameters / Models	LM138K STEEL	LM138K STEEL/NOPB
Accuracy, %	4	4
Iout(Max), A	5	5
Iq(Typ), mA	0.045	0.045
Noise, uVrms	37	37
Operating Temperature Range, C	-55 to 125	-55 to 125
Output Capacitor Type	N/A	N/A
Output Options	Adjustable Output	Adjustable Output
PSRR @ 100KHz, dB	10	10
Package Group	TO-3	TO-3
Package Size: mm2:W x L, PKG	2TO-3: 969 mm2: 24.89 x 38.94(TO-3)	2TO-3: 969 mm2: 24.89 x 38.94(TO-3)
Rating	Catalog	Catalog
Regulated Outputs	1	1
Special Features	N/A	N/A
Thermal Resistance ОёJA, В°C/W	35	35
Vdo(Typ), mV	3000	3000
Vin(Max), V	40	40
Vin(Min), V	4.2	4.2
Vout(Max), V	32	32
Vout(Min), V	1.24	1.24

Eco Plan

Application Notes

• Download
  A Topical Index of TI LDO Application Notes (Rev. F)
  PDF, 82 Kb, Revision: F, File published: Jun 27, 2019
• Download
  Digital Designer's Guide to Linear Voltage Regulators & Thermal Mgmt (LDO) (Rev. A)
  PDF, 509 Kb, Revision: A, File published: Jun 4, 2008
• Download
  Method For Cal Output Voltage Tolerances in Adj Regs (Rev. A)
  PDF, 284 Kb, Revision: A, File published: May 5, 2013
  When working with voltage regulator circuits the designer is often confronted with the need to calculatethe tolerance of the regulated output voltage. For fixed voltage regulators this problem is easily managedbecause the required information is directly supplied on the semiconductor manufacturer's data sheet.
• Download
  AN-1148 Linear Regulators: Theory of Operation and Compensation (Rev. B)
  PDF, 300 Kb, Revision: B, File published: May 6, 2013
  This application note discusses the operation and compensation of linear regulators.
• Download
  AN-103 LM340 Series Three Terminal Positive Regulators (Rev. A)
  PDF, 814 Kb, Revision: A, File published: May 6, 2013
  The LM340-XX are three terminal 1.0A positive voltage regulators with preset output voltages of 5.0V or15V. The LM340 regulators are complete 3-terminal regulators requiring no external components fornormal operation. However by adding a few parts one may improve the transient response provide for avariable output voltage or increase the output current. Included on the chip are all of t
• Download
  Understanding the Terms and Definitions of LDO Voltage Regulators
  PDF, 197 Kb, File published: Oct 21, 1999
  This report provides an understanding of the terms and definitions of low dropout (LDO) voltage regulators and describes fundamental concepts including dropout voltage quiescent current standby current efficiency transient response line/load regulation power supply rejection output noise voltage accuracy and power dissipation. Each section includes an example to increase the understandab
• Download
  A New Production Technique for Trimming Voltage Regulators
  PDF, 105 Kb, File published: Oct 3, 2002
• Download
  Packaging Limits Range of Linear Regulators
  PDF, 75 Kb, File published: May 8, 2010
  The power limitations of the physical packaging for a linear regulator device can limit the total output current or the input-to-output voltage differential. This inherent limitation is not always apparent from the product data sheet and must be evaluated during the design phase. This application note shows how the package can limit the operating envelope of a linear regulator.

Model Line

Manufacturer's Classification

• Semiconductors> Power Management> Linear Regulator (LDO)> Single Channel LDO