TS2938CS12 Datasheet, PDF (2/6 Pages) Taiwan Semiconductor Company, Ltd – 500mA Ultra Low Dropout Voltage Regulator with Inhibit Function

TS2938
500mA Ultra Low Dropout Voltage Regulator
with Inhibit Function
Electrical Characteristics ( V_IN=V_OUT+1V, I_L=5mA, C_O=10uF, T_A=25^oC, unless otherwise noted)
Parameter
Conditions
Min Typ Max
Unit
Output Voltage
T_A=25^oC
T_A=25~85^oC
Output Voltage Temperature Coefficient
0.980|V
o|
0.960|V
o|
--
V_OUT
50
1.020|V
o|
1.040|V
o|
150
V
V
ppm/ ^oC
Line Regulation
Load Regulation
Dropout Voltage (Note 4)
Quiescent Current (Note 5)
Short Circuit Current (Note 6)
Output Noise,
10Hz to 100KHz, I_L=10mA
Ripple Rejection
Vo+1V ≤ V_IN ≤ 26V
5mA ≤ I_L ≤ 500mA
I_L=100mA
I_L=300mA
I_L=500mA
I_L=100uA
I_L=300mA
I_L=500mA
V_OUT =0
C_L=2.2uF
C_L=3.3uF
C_L=33uF
Ratio
--
0.05
0.5
%
--
0.2
1.0
%
--
100
200
--
300
400
mV
--
500
600
--
200
300
uA
--
12
20
mA
--
25
50
mA
--
0.9
1.3
A
--
500
--
--
350
--
uVrms
--
120
--
60
--
--
dB
Shutdown Input
Input Logic Voltage
Low (Regulator ON)
--
1.3
0.7
V
High (Regulator OFF)
2.0
--
--
Shutdown Pin Input Current
Regulator Output Current in Shutdown
Vinhibit = 2.4V
Vinhibit = 26V
Vinhibit≤2V, Vin≤26V
Vout=0V
--
30
50
--
450
600
uA
--
--
200
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.
2/6
Version: E11