LM2931AD33R ,Very low drop voltage regulators with inhibit functionFeaturesinput voltage can exceed the specified maximum • Very low dropout voltage (90 mV typ. at 10 ..
LM2931AD-5.0 ,LOW DROPOUT VOLTAGE REGULATORSMAXIMUM RATINGSRating Symbol Value UnitInput Voltage Continuous V 40 VdcITransient Input Voltage (τ ..
LM2931AD-5.0R2 ,100mA, 5V, Low Dropout Voltage Regulator with 60V Load Dump ProtectionFeaturesD2T SUFFIX1• Pb−Free Packages are AvailableCASE 9363• Input−to−Output Voltage Differential ..
LM2931AD50R ,VERY LOW DROP VOLTAGE REGULATOR WITH INHIBIT FUNCTIONpin configuration installations or 2 battery jumps. During the(SO-8), fully compatible to the older ..
LM2931ADT33 ,VERY LOW DROP VOLTAGE REGULATOR WITH INHIBIT FUNCTIONELECTRICAL CHARACTERISTICS FOR LM2931A 3.3V (refer to the test circuits, oT = 25 C, V = 14 V, C = ..
LM2931ADT-5.0RKG , 100 mA, Adjustable Output, LDO Voltage Regulator with 60 V Load Dump Protection
LM78L62ACZ ,3-Terminal Positive Regulatorsapplications.Whenusedasazener
LM78L62ACZ ,3-Terminal Positive Regulatorsapplications.Whenusedasazener
LM78L82ACZ ,3-Terminal Positive Regulatorsapplications.Whenusedasazener
LM78M05CDT ,3-Terminal Positive Voltage Regulatorsapplications would include localn Available in TO-220, TO-39, and TO-252 D-PAK(on-card) regulators ..
LM78M05CDTX ,3-Terminal Positive Voltage RegulatorsElectrical Characteristics=Limits in standard typeface are for T 25˚C, and limits in boldface type ..
LM78M05CH ,3-Terminal Positive Voltage RegulatorsLM341/LM78MXX Series 3-Terminal Positive Voltage RegulatorsJuly 1999LM341/LM78MXX Series3-Terminal ..
LM2931AD33R
Very low drop voltage regulators with inhibit function
April 2014 DocID6740 Rev 21 1/24
LM2931Very low drop voltage regulators with inhibit function
Datasheet - production data
Features Very low dropout voltage (90 mV typ. at 10 mA
load) Low quiescent current (typ. 2.5 mA, at 100 mA
load) Output current up to 100 mA Adjustable (from V OUT = 2.5 V only SO-8) and
fixed (3.3 V and 5 V) output voltage version Internal current and thermal limit Load dump protection up to 60 V Reverse transient protection up to - 50 V Temperature range: - 40 to 125 °C Package available: TO-92, DPAK, SO-8 (with
inhibit control)
DescriptionThe LM2931 are very low drop regulators. The
very low drop voltage and the low quiescent
current make them particular suitable for low
noise, low power applications and in battery-
powered systems. In the 8-pin configuration
(SO-8), fully compatible with the older L78L
family, a shutdown logic control function is
available. This means that when the device is
used as a local regulator it is possible to put a part
of the board in standby, decreasing total power
consumption. Ideal for automotive applications,
LM2931 is protected from reverse battery
installations or 2 battery jumps. During the
transient, such as a 60 V load dump, when the
input voltage can exceed the specified maximum
operating input voltage of 26 V, the regulator
automatically shuts down to protect both internal
circuitry and the load.
Table 1. Device summary
Contents LM29312/24 DocID6740 Rev 21
Contents Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Application circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Packaging mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3/24
LM2931 Diagram
1 Diagram
Figure 1. Schematic diagram
Pin configuration LM29314/24 DocID6740 Rev 21
2 Pin configuration(*) ADJ pin on the Adjustable version, Not Connected in the fixed output version.
Figure 2. Pin connections (top view)
DocID6740 Rev 21 5/24
LM2931 Maximum ratings
3 Maximum ratings Note: Absolute maximum ratings are those values beyond which damage to the device may occur.
Functional operation under these condition is not implied.
Table 2. Absolute maximum ratings
Table 3. Thermal data Considering 6 cm2 of copper board heat-sink.
Application circuits LM29316/24 DocID6740 Rev 21
Application circuits Note: R1 suggested value = 27 kΩ
VO = VREF (R1 + R2)/R1
Inhibit pin: regulator is enabled when VINH < 1.2 V , disabled when VINH > 3.25 V
Figure 3. Application circuit for fixed output
Figure 4. Application circuit for adjustable output
DocID6740 Rev 21 7/24
LM2931 Electrical characteristics
5 Electrical characteristicsRefer to the application circuit Figure 3, TJ = 25 °C, CI = 0.1 µF , CO = 100 µF, VI = 14 V,
IO = 10 mA, VINH = 0 V, unless otherwise specified.
Table 4. Electrical characteristics of LM2931A33 Reference voltage is measured from VOUT to ADJ pin. Vd measured when the output voltage has dropped 100 mV from the nominal value obtained at 14 V.
Electrical characteristics LM29318/24 DocID6740 Rev 21
Refer to the application circuit Figure 3, TJ = 25 °C, CI = 0.1 µF, CO = 100 µF, VI = 14 V, IO =
10 mA, VINH = 0 V, unless otherwise specified.
Table 5. Electrical characteristics of LM2931A50 Reference voltage is measured from VOUT to ADJ pin. Vd measured when the output voltage has dropped 100 mV from the nominal value obtained at 14 V.
DocID6740 Rev 21 9/24
LM2931 Electrical characteristicsRefer to the application circuit Figure 4 with R1 = 27 KΩ and R2 = 40.5 kΩ, TJ = 25 °C,
CI = 0.1 µF, CO = 100 µF, VI = 14 V, IO = 10 mA, VINH = 0 V, unless otherwise specified.
Table 6. Electrical characteristics of LM2931 Reference voltage is measured from VOUT to ADJ pin. Vd measured when the output voltage has dropped 100 mV from the nominal value obtained at 14 V.
Typical characteristics LM293110/24 DocID6740 Rev 21
6 Typical characteristicsUnless otherwise specified CI = 0.1 µF, CO = 100 µF.
Figure 5. Output voltage vs. temperature Figure 6. Output voltage vs. temperature
Figure 7. Reference voltage vs. temperature Figure 8. Line regulation vs. temperature
LM2931 Typical characteristics
Figure 9. Load regulation vs. temperature Figure 10. Dropout voltage vs. temperature
Figure 11. Dropout voltage vs. temperature Figure 12. Dropout voltage vs. output current
Figure 13. Output voltage vs. input voltage Figure 14. Short circuit current vs. drop voltage
Typical characteristics LM2931
Figure 15. Quiescent current vs. temperature Figure 16. Quiescent current vs. input voltage
Figure 17. Quiescent current vs. output current Figure 18. Supply voltage rejection vs.
temperature
Figure 19. Supply voltage rejection vs.
frequency
Figure 20. Supply voltage rejection vs. output
current
