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TS2938CP550 bảng dữ liệu(PDF) 2 Page - Taiwan Semiconductor Company, Ltd

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Giải thích chi tiết về linh kiện  500mA Ultra Low Dropout Fixed Voltage Regulator with Inhibit
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TS2938/A
2-5
2004/09 rev. A
Electrical Characteristics
Vin = Vout + 1V, IL = 5mA, Co = 6.8uF, Ta = 25
oC, Vinhibit = 0V, unless otherwise specified.
Parameter
Conditions
Min
Typ
Max
Unit
TS2938A
0.990|Vo|
1.010|Vo|
v
Output Voltage
Ta = 25
oC
TS2938
0.980|Vo|
1.020|Vo|
V
TS2938A
0.980|Vo|
1.020|Vo|
Output Voltage
Ta = -25 ~ 85
oC
TS2938
0.960|Vo|
8.0 / 5.0
3.3 / 2.5
1.040|Vo|
V
Input Supply Voltage
--
--
26
V
Output Voltage Temp. Coefficient
--
50
150
ppm/
oC
Line Regulation
Vo+1V
≤ Vin ≤ 26V
--
0.05
0.5
%
Load Regulation
5mA
≤ IL ≤ 500mA
--
0.2
1.0
%
Dropout Voltage (Note 4)
IL=100mA
IL=300mA
IL=500mA
--
--
--
100
300
500
200
400
600
mV
Quiescent Current (Note 5)
IL=100uA
IL=300mA
IL=500mA
--
--
--
100
12
25
200
20
50
uA
mA
Short Circuit Current (Note 6)
Vout=0
--
0.9
1.3
A
Output Noise,
10Hz to 100KHz, IL=10mA
CL=2.2uF
CL=3.3uF
CL=33uF
--
--
--
500
350
120
--
--
--
uVrms
Ripple Rejection Ratio
Io=350mA, f=120Hz,
Co=100uF, Vin=Vo+3V+2Vpp
60
--
--
dB
Shutdown Input
Input Logic Voltage
Low (Regulator ON)
--
1.3
0.7
High (Regulator OFF)
2.0
--
--
V
Shutdown Pin Input Current
Vinhibit = 2.4V
--
30
50
Vinhibit = 26V
--
450
600
Regulator Output Current in
Shutdown
Vinhibit
≤ 2V, Vin ≤ 26V,
Vout = 0V
--
--
200
uA
Thermal Performance
Condition
Package type
Typ
Unit
TO-252
150
Thermal Resistance
Junction to Ambient
SOP-8
170
oC/W
Note 1: Absolute Maximum Rating is limits beyond which damage to the device may occur. For guaranteed Specifications
and test conditions see the Electrical Characteristics.
Note 2: Maximum positive supply voltage of 60V must be limited duration (<100mS) and duty cycle (<1%).
Note 3: The maximum allowable power dissipation is a function of the maximum junction temperature, Tj, the junction to
ambient thermal resistance, θja, and the ambient temperature, Ta. Exceeding the maximum allowable power
dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. The effective
value of θja can be reduced by using a heatsink.
Note 4: Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its
nominal value measured at 1V differential.
Note 5: Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the
ground pin current and output load current.
Note 6: Output current will decrease with increasing temperature, but it will be not dropped below 500mA at the maximum
specified temperature.


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