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PDF LM2931 Data sheet ( Hoja de datos )
| Número de pieza | LM2931 | |
| Descripción | Very low drop voltage regulators | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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1. LM2931  Hay una vista previa y un enlace de descarga de LM2931 (archivo pdf) en la parte inferior de esta página. Total 24 Páginas | ||
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LM2931
Very low drop voltage regulators with inhibit function
Datasheet - production data
Description
DPAK
TO-92
SO-8
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 VOUT = 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)
The 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.
DPAK
Table 1. Device summary
Order codes
TO-92 (bag)
SO-8
Output voltages
LM2931ADT50R
LM2931AZ50R
LM2931AD33R
LM2931AD50R
LM2931D-R
3.3 V
5.0 V
2.5 to 26 V
April 2014
This is information on a product in full production.
DocID6740 Rev 21
1/24
www.st.com
1 page  
LM2931
3 Maximum ratings
Maximum ratings
Symbol
VI
VI
VI
VI
VINH
IO
TSTG
TOP
Table 2. Absolute maximum ratings
Parameter
DC positive input voltage
DC reverse input voltage
Transient input voltage (τ < 100 ms)
Transient reverse input voltage (τ < 100 ms)
Inhibit input voltage
Output current
Storage temperature range
Operating junction temperature range
Value
40
-15
60
-50
40
Internally limited
-65 to 150
-40 to 125
Unit
V
V
V
V
V
°C
°C
Note:
Absolute maximum ratings are those values beyond which damage to the device may occur.
Functional operation under these condition is not implied.
Symbol
Table 3. Thermal data
Parameter
SO-8
RthJC Thermal resistance junction-case
RthJA Thermal resistance junction-ambient
1. Considering 6 cm2 of copper board heat-sink.
20
55 (1)
DPAK
8
100
TO-92
200
Unit
°C/W
°C/W
DocID6740 Rev 21
5/24
24
5 Page 
LM2931
Figure 9. Load regulation vs. temperature
Typical characteristics
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
DocID6740 Rev 21
11/24
24
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet LM2931.PDF ] | |
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