We use Cookies to give you best experience on our website. By using our website and services, you expressly agree to the placement of our performance, functionality and advertising cookies. Please see our Privacy Policy for more information.

Findchips Blog
Power Circuits / Linear Regulator ICs / LD2979M33TR
Datasheets
LD2979M33TR by: STMicroelectronics

Very low drop voltage regulators with inhibit

Part Details for LD2979M33TR by STMicroelectronics

Results Overview of LD2979M33TR by STMicroelectronics

Tip: Data for a part may vary between manufacturers. You can filter for manufacturers on the top of the page next to the part image and part number.

Applications Consumer Electronics Energy and Power Systems Transportation and Logistics Renewable Energy Automotive

LD2979M33TR Information

LD2979M33TR by STMicroelectronics is a Linear Regulator IC.
Linear Regulator ICs are under the broader part category of Power Circuits.

A power circuit delivers electricity in order to operate a load for an electronic device. Power circuits include transformers, generators and switches. Read more about Power Circuits on our Power Circuits part category page.

Price & Stock for LD2979M33TR

Part # Distributor Description Stock Price Buy
DISTI # 70390221
RS LD2979M33TR, LDO Voltage Regulator, 50mA, 3.3 V, 5-Pin SOT-23 Min Qty: 50 Package Multiple: 1 Container: Bulk 0
  • 50 $0.4500
  • 100 $0.3900
  • 250 $0.3500
  • 500 $0.3200
$0.3200 / $0.4500 RFQ
ComSIT USA VERY LOW DROP VOLTAGE REGULATOR WITH INHIBIT Fixed Positive LDO Regulator, 3.3V, 0.6V Dropout, BIPol... ar, PDSO5 more ECCN: EAR99 RoHS: Compliant Stock DE - 9000
Stock ES - 0
Stock US - 0
Stock MX - 0
Stock CN - 0
Stock HK - 0
RFQ
DISTI # LD2979M33TR
Avnet Silica LDO Regulator Pos 33V 005A 5Pin SOT23 TR (Alt: LD2979M33TR) RoHS: Compliant Min Qty: 3000 Package Multiple: 3000 Lead time: 143 Weeks, 0 Days Silica - 0
Buy Now
DISTI # LD2979M33TR
EBV Elektronik LDO Regulator Pos 33V 005A 5Pin SOT23 TR (Alt: LD2979M33TR) RoHS: Compliant Min Qty: 3000 Package Multiple: 3000 Lead time: 143 Weeks, 0 Days EBV - 0
Buy Now

Part Details for LD2979M33TR

LD2979M33TR CAD Models

  • Part Symbol

    Part Symbol

  • Footprint

    footprint

  • 3D Model

    3D Model

Available Download Formats

Sign in to download CAD models Register or Sign In

By downloading CAD models, you agree to our Terms & Conditions and Privacy Policy

LD2979M33TR Part Data Attributes

Parametric Data
LD2979M33TR STMicroelectronics
Buy Now Datasheet
Compare Parts:
LD2979M33TR STMicroelectronics Very low drop voltage regulators with inhibit
Select a part to compare:
Rohs Code Yes
Part Life Cycle Code Obsolete
Ihs Manufacturer STMICROELECTRONICS
Part Package Code SOT-23
Package Description ROHS COMPLIANT, SOT-23, 5 PIN
Pin Count 5
Reach Compliance Code compliant
ECCN Code EAR99
HTS Code 8542.39.00.01
Samacsys Manufacturer STMicroelectronics
Adjustability FIXED
Dropout Voltage1-Max 0.6 V
Dropout Voltage1-Nom 0.2 V
Input Voltage Absolute-Max 16 V
Input Voltage-Max 16 V
Input Voltage-Min 4.3 V
JESD-30 Code R-PDSO-G5
JESD-609 Code e3
Length 2.9 mm
Line Regulation-Max 0.0247%
Moisture Sensitivity Level 1
Number of Functions 1
Number of Outputs 1
Number of Terminals 5
Operating Temperature TJ-Max 125 °C
Operating Temperature TJ-Min -25 °C
Output Current1-Max 0.05 A
Output Voltage1-Max 3.432 V
Output Voltage1-Min 3.168 V
Output Voltage1-Nom 3.3 V
Package Body Material PLASTIC/EPOXY
Package Code LSSOP
Package Equivalence Code TSOP5/6,.11,37
Package Shape RECTANGULAR
Package Style SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
Packing Method TR
Peak Reflow Temperature (Cel) 260
Qualification Status Not Qualified
Regulator Type FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
Seated Height-Max 1.45 mm
Surface Mount YES
Technology BIPOLAR
Terminal Form GULL WING
Terminal Pitch 0.95 mm
Terminal Position DUAL
Voltage Tolerance-Max 4%
Width 1.625 mm

Alternate Parts for LD2979M33TR

This table gives cross-reference parts and alternative options found for LD2979M33TR. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of LD2979M33TR, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.

Part Number Manufacturer Composite Price Description Compare
MIC5256-2.85YM5-TR Micrel Inc Check for Price Fixed Positive LDO Regulator, 2.85V, 0.25V Dropout, CMOS, PDSO5, SOT-23, 5 PIN LD2979M33TR vs MIC5256-2.85YM5-TR
SPX3819M5-3-1 Sipex Corporation Check for Price Fixed Positive LDO Regulator, 3.1V, 0.7V Dropout, PDSO5, MO-178AA, SOT-23, 5 PIN LD2979M33TR vs SPX3819M5-3-1
LP2985AIM5-4.7 Texas Instruments Check for Price 4.7V FIXED POSITIVE LDO REGULATOR, 0.575V DROPOUT, PDSO5, SOT-23, 5 PIN LD2979M33TR vs LP2985AIM5-4.7
LP2985IBP-2.4/NOPB Texas Instruments Check for Price 2.4V FIXED POSITIVE LDO REGULATOR, 0.575V DROPOUT, PBGA5, MICRO, SMD-5 LD2979M33TR vs LP2985IBP-2.4/NOPB
FAN2535S285X Fairchild Semiconductor Corporation Check for Price Fixed Positive LDO Regulator, 2.85V, 0.22V Dropout, CMOS, PDSO5, SOT-23, 5 PIN LD2979M33TR vs FAN2535S285X
LP2981AIM5-3.8/NOPB Texas Instruments Check for Price 3.8V FIXED POSITIVE LDO REGULATOR, 0.375V DROPOUT, PDSO5, SOT-23, SOP-5 LD2979M33TR vs LP2981AIM5-3.8/NOPB
LP2985AIBP-1.8 Texas Instruments Check for Price 1.8V FIXED POSITIVE LDO REGULATOR, 0.6V DROPOUT, PBGA5, MICRO, SMD-5 LD2979M33TR vs LP2985AIBP-1.8
ILC7082AIM5-31 Fairchild Semiconductor Corporation Check for Price Fixed Positive LDO Regulator, 3.1V, 0.3V Dropout, CMOS, PDSO5, PLASTIC, SOT-23, 5 PIN LD2979M33TR vs ILC7082AIM5-31
FAN2515S27X Fairchild Semiconductor Corporation Check for Price Fixed Positive LDO Regulator, 2.7V, 0.2V Dropout, CMOS, PDSO5, SOT-23, 5 PIN LD2979M33TR vs FAN2515S27X
ZXCL5213V30H5TA Diodes Incorporated Check for Price Fixed Positive LDO Regulator, 3V, 0.28V Dropout, CMOS, PDSO5, SC-70, 5 PIN LD2979M33TR vs ZXCL5213V30H5TA

LD2979M33TR Related Parts

LD2979M33TR Frequently Asked Questions (FAQ)

  • A good PCB layout for optimal thermal performance involves placing the device near a thermal pad or a heat sink, and ensuring good thermal conductivity between the device and the PCB. A 2-layer or 4-layer PCB with a solid ground plane is recommended. Avoid placing thermal vias under the device, and keep the PCB traces away from the device's thermal pad.

  • To ensure the device's output voltage is stable and accurate, make sure to decouple the input and output pins with suitable capacitors, and use a stable input voltage source. Also, ensure the device is operated within its recommended operating conditions, and the output voltage is set correctly using the feedback resistors.

  • The recommended input capacitor value is 10uF to 22uF, and the type should be a low-ESR ceramic capacitor, such as X5R or X7R. This helps to filter out noise and ripple on the input voltage.

  • To protect the device from overcurrent and overheating, use a suitable current limiting resistor or a fuse in series with the input voltage, and ensure the device is operated within its recommended operating conditions. Also, use a thermal monitoring circuit to detect overheating and shut down the device if necessary.

  • The recommended output capacitor value is 10uF to 22uF, and the type should be a low-ESR ceramic capacitor, such as X5R or X7R. This helps to filter out noise and ripple on the output voltage.