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L99VR01STR データシート(PDF) 4 Page - STMicroelectronics

部品番号 L99VR01STR
部品情報  Automotive low dropout linear voltage regulator with configurable output voltage having 200 mA current capability
PDF  47 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L99VR01STR データシート(HTML) 4 Page - STMicroelectronics

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Figure 2. Functional block diagram of L99VR01J
Table 1. Pins description
Pin name
SO-8 pin
PowerSSO-12
pin
Function
VS
1
1
Supply voltage.
Block directly to ground with ceramic capacitor ≥ 4.7 µF and a 100 nF
capacitator as close as possible to the pin
SEL1
2
2
Output voltage selectors.
SEL2
3
3
SEL3
4
4
TW
5
Advanced thermal warning output.
If the device detects a junction temperature above the warning
threshold, the pin is pulled low. If an overvoltage condition occurs, a
square wave is provided through the TW output. Leave floating if not
used.
IShort
6
Programmable short circuit output current input pin. A resistor between
Ishort pin and GND sets the short circuit output current value.
EN
5
7
Enable input.
With the Enable high, regulator, watchdog and reset are operating.
With the Enable low, regulator, watchdog and reset are shutdown,
while the fast discharge circuit is turned on.
Connect the Enable to Vs to keep the device always enabled
GND
6
8
Ground reference.
VCW
9
Watchdog timer adjust.
A capacitor between VCW pin and GND sets the time response of the
watchdog monitor (just for L99VR01J).
L99VR01
Block diagram and pins description
DS13649 - Rev 3
page 4/47



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