L4993 Datasheet PDF - STMicroelectronics
| Part Number | L4993 | |
| Description | Low drop voltage regulator | |
| Manufacturers | STMicroelectronics | |
| Logo |  |
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L4993
Low drop voltage regulator
Features
Max DC supply voltage
Max output voltage tolerance
Max dropout voltage
Output current
Quiescent current
VS
∆V0
Vdp
I0
Iqn
1. Typical value with watchdog disabled.
40V
+/-2%
400 mV
150 mA
79 µA(1)
■ Operating DC supply voltage range 5.6V to
31V
■ Reset circuit sensing the output voltage down
to 1V
■ Programmable reset pulse delay with external
capacitor
■ Watchdog
■ Programmable watchdog timer with external
capacitor
■ Enable input for enabling/disabling the
watchdog functionality
■ Thermal shutdown and short circuit protection
■ Wide temperature range (Tj = -40°C to 150°C)
SO-8
SO-20
Description
The L4993 is a monolithic integrated 5V Voltage
regulator with a low drop voltage at currents up to
150mA.The output voltage regulating element
consists in a p-channel MOS and the regulation is
performed regardless of input voltage transients
up to 40V. The high precision of the output voltage
is obtained with a pre-trimmed reference voltage.
The L4993 is protected against short circuit and
an over-temperature protection switches off the
device in case of extremely high power dissipa-
tion. The L4993 watchdog is active when the
Enable is high. State of the art features like reset
and watchdog make this device particularly
suitable to supply microprocessor systems in
automotive applications.
Table 1. Device summary
Package
SO-8
SO-20 (16+2+2)
Tube
L4993D
L4993MD
Order codes
Tape & reel
L4993DTR
L4993MDTR
April 2008
Rev 6
1/30
www.st.com
30
Free Datasheet http://www.datasheet4u.com/
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L4993
1
Block diagram and pins description
Block diagram and pins description
Figure 1. Block diagram
IS
VS
ICW
Iwi
VWi
VCW
IWEn
VWEn
Icr
Vcr
Thermal
protection
Watchdog
+
-
Voltage reference
Reset
Gnd
5V, 150 mA
IO
VO
IRes
VRes
5/30
Free Datasheet http://www.datasheet4u.com/
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for L4993 electronic component. |
| Information | Total 30 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ L4993.PDF Datasheet ] | |
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