MIC5231(2000) Просмотр технического описания (PDF) - Micrel
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MIC5231 Datasheet PDF : 8 Pages
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MIC5231
Micrel
Electrical Characteristics
VIN = VOUT + 1V; IL = 100µA; CL = 0.47µF; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +125°C; unless noted.
Symbol
Parameter
Conditions
Min Typ
Max Units
VOUT
Output Voltage Accuracy
variation from nominal VOUT
–2
+2
%
–3
+3
%
∆VOUT/∆T
Output Voltage
Temperature Coefficient
Note 5
250
ppm/°C
∆VOUT/VOUT
∆VOUT/VOUT
VDO
Line Regulation
Load Regulation
Dropout Voltage, Note 7
IQ
Ground Pin Current
PSRR
Ripple Rejection
Enable Input
VIN = 6V to 12V
IL = 10µA to 10mA, Note 6
IL = 1mA
IL = 10mA
VIN = 6V, IL = 10mA
VIN = 12V, IL = 10mA
f = 100Hz, IL = 100µA
0.2 0.25
%
0.2
1
%
15
mV
150 300 mV
0.65
3
µA
1.1
4
µA
50
dB
VENL
IENL
IENH
Enable Input Voltage
Enable Input Current
Enable Input Current
VEN = logic low (regulator off)
VEN = logic high ((regulator on)
VENL ≤ 0.18V (regulator off)
VENH ≥ 1.4V (regulator on)
0.4 0.18
V
1.4
V
1
nA
1
nA
Note 1.
Note 2.
Note 3.
Note 4:
Note 5:
Note 6:
Note 7:
Exceeding the absolute maximum rating may damage the device.
The device is not guaranteed to function outside its operating rating.
Devices are ESD sensitive. Handling precautions recommended.
The maximum allowable power dissipation at any TA (ambient temperature) is PD(max) = (TJ(max) – TA) ÷ θJA. The θJC of the MIC5231 is
130°C/W. Mounted to a standard PC board, the θJA is approximately 235°C/W.
Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.
Regulation is measured at constant junction temperature using low duty cycle pulse testing.
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. For outputs below 3.5V, dropout voltage is the input-to-output differential with the minimum input voltage 3.5V. Minimum input
operating voltage is 3.5V.
June 2000
3
MIC5231
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