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L4979MD डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - LOW DROP VOLTAGE REGULATOR - STMicroelectronics

भाग संख्या L4979MD
समारोह LOW DROP VOLTAGE REGULATOR
मैन्युफैक्चरर्स STMicroelectronics 
लोगो STMicroelectronics लोगो 
पूर्व दर्शन
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<?=L4979MD?> डेटा पत्रक पीडीएफ

L4979MD pdf
L4979MD L4979D
Table 2. Pin Function
SO8
1
SO20
1
Pin
Name
En
2 4 gnd
5,6,15,16
gnd
3 7 Res
4 10 Vcr
5 11 Vcw
6 14 Wi
7 17 Vo
8 20 Vs
2, 3, 8, 9, 12, N. C.
13, 18, 19
Function
Enable input
If high, regulator, watchdog and reset are operating. If low, regulator, watchdog
and reset are shut down.
Ground reference
Ground
These pins are to be connected to a heat spreader electrically grounded
Reset output.
It is pulled down when output voltage drops below Vo_th or frequency at Wi is too
low.
Reset timing adjust
A capacitor between Vcr pin and gnd sets the reset delay time (trd)
Watchdog timer adjust
A capacitor between Vcw pin and gnd sets the time response of the watchdog
monitor.
Watchdog input.
If the frequency at this input pin is too low, the Reset output is activated.
Voltage regulator output
Output capacitor >100nF is needed for regulator stability
Supply voltage
Supply capacitor (e.g. 200nF) is needed for regulator stability.
not connected
Figure 3. Pins Connection (Top view)
EN
GND
RES
VCR
18
27
3 SO8 6
45
SO8
VS
VO
WI
VCW
EN
N.C.
N.C.
GND
GND
GND
RES
N.C.
N.C.
VCR
1 20
2 19
3 18
4 17
5 16
6 SO20 15
7 14
8 13
9 12
10 11
D00AT457
VS
N.C.
N.C.
VO
GND
GND
WI
N.C.
N.C.
WCW
2/10

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