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L4995AJTR Scheda tecnica(PDF) 10 Page - STMicroelectronics

Il numero della parte L4995AJTR
Spiegazioni elettronici  5V, 500mA low drop voltage regulator
PDF  35 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L4995AJTR Scheda tecnica(HTML) 10 Page - STMicroelectronics

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Electrical specifications
L4995
10/35
Doc ID 13103 Rev 14
VS, Vo
Iqn_150
Current consumption
with regulator enabled
VS = 13.5V,
Io = 150mA,
740
1000
µA
VS, Vo
Iqn_250
Current consumption
with regulator enabled
VS= 13.5V,
Io= 250mA,
11.4
mA
VS, Vo
Iqn_500
Current consumption
with regulator enabled
VS= 13.5V,
Io= 500mA,
2.1
2.7
mA
Tw
Thermal protection
temperature
150
190
°C
Tw_hy
Thermal protection
temperature hysteresis
10
°C
1.
See Figure 28.
2.
Measured output current when the output voltage has dropped 100mV from its nominal value obtained at
Vs=13.5V and Io= 250mA.
3.
Vs-Vo measured when the output voltage has dropped 100mV from its nominal value obtained at Vs=13.5V
and Io= 250mA.
4.
Guaranteed by design.
Table 6.
Reset
Pin
Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit
Res
Vres_l
Reset output low voltage
Rext = 5kΩ to Vo,
Vo > 1V
0.4
V
Res
IRes_lkg
Reset output high leakage
current
VRes = 5V
1
µA
Res
RRes
Pull up internal resistance
(versus Vo)
10
20
40
k
Ω
Res
Vo_th
Vo out of regulation
threshold
VS = 5.6 to 31V
Io = 1 to 500mA
6%
8%
10%
below
Vo_ref
Vcr
VRlth
Reset delay circuit low
threshold
VS = 13.5V
10%
13%
16%
Vo_ref
Vcr
VRhth
Reset delay circuit high
threshold
VS =13.5V
44%
47%
50%
Vo_ref
Vcr
Icr
Charge current
VS = 13.5V
8
15
30
µA
Vcr
Idr
Discharge current
VS = 13.5V
8
15
30
µA
Res
Trr
Reset reaction time(1)
1.
When Vo becomes lower than 4V, the reset reaction time decreases down to 2µs assuring a faster reset
condition in this particular case.
Vo = Vo_th -100mV
100
250
700
µs
Res
Trd
Reset delay time
VS = 13.5V,
Ctr = 47nF
12
33
73
ms
Table 5.
General (continued)
Pin
Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit



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