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MIC5255-2.8YML Datasheet(PDF) 4 Page - Micrel Semiconductor

Part # MIC5255-2.8YML
Description  150mA Low Noise UCap CMOS LDO
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC5255-2.8YML Datasheet(HTML) 4 Page - Micrel Semiconductor

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MIC5255
Micrel
August, 2004
4
M0385-080204
Electrical Characteristics(5)
V
IN = VOUT + 1V, VEN = VIN; IOUT = 100µA; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +125°C; unless noted.
Symbol
Parameter
Conditions
Min
Typical
Max
Units
V
O
Output Voltage Accuracy
I
OUT = 100µA
–11
%
–22
%
∆V
LNR
Line Regulation
V
IN = VOUT + 1V to 6V
0.02
0.05
%/V
∆V
LDR
Load Regulation
I
OUT = 0.1mA to 150mA
(6)
1.5
2.5
%
V
IN – VOUT
Dropout Voltage(7)
I
OUT = 100µA
0.1
5
mV
I
OUT = 100mA
90
150
mV
I
OUT = 150mA
135
200
mV
250
mV
I
Q
Quiescent Current
V
EN ≤ 0.4V (shutdown)
0.2
1
µA
I
GND
Ground Pin Current(8)
I
OUT = 0mA
90
150
µA
I
OUT = 150mA
117
µA
PSRR
Ripple Rejection
f = 10Hz, C
OUT = 1.0µF, CBYP = 0.01µF60
dB
f = 100Hz, V
IN = VOUT +1
60
dB
f = 10kHz, V
IN = VOUT +1
50
dB
I
LIM
Current Limit
V
OUT = 0V
160
425
mA
e
n
Output Voltage Noise
C
OUT = 1.0µF, CBYP = 0.01µF,
30
µV(rms)
f = 10Hz to 100kHz
Enable Input
V
IL
Enable Input Logic-Low Voltage
V
IN = 2.7V to 5.5V, regulator shutdown
0.4
V
V
IH
Enable Input Logic-High Voltage
V
IN = 2.7V to 5.5V, regulator enabled
1.6
V
I
EN
Enable Input Current
V
IL ≤ 0.4V, regulator shutdown
0.01
µA
V
IH ≥ 1.6V, regulator enabled
0.01
µA
Shutdown Resistance Discharge
500
Thermal Protection
Thermal Shutdown Temperature
150
°C
Thermal Shutdown Hysteresis
10
°C
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. The maximum allowable power dissipation of any T
A (ambient temperature) is PD(max) = (TJ(max)–TA)/θJA. Exceeding the maximum allowable
power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. The
θ
JA of the MIC5255-x.xBM5 (all
versions) is 235
°C/W on a PC board. See “Thermal Considerations” section for further details.
4. Devices are ESD sensitive. Handling precautions recommended.
5. Specification for packaged product only.
6. Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested for load regulation in the load range
from 0.1mA to 150mA. Changes in output voltage due to heating effects are covered by the thermal regulation specification.
7. Dropout Voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal value measured at 1V differen-
tial. For outputs below 2.7V, dropout voltage is the input-to-output voltage differential with the minimum input voltage 2.7V. Minimum input operating
voltage is 2.7V.
8. Ground pin current is the regulator quiescent current. The total current drawn from the supply is the sum of the load current plus the ground pin current.
Absolute Maximum Ratings(1)
Supply Input Voltage (V
IN) .................................. 0V to +7V
Enable Input Voltage (V
EN) ................................. 0V to +7V
Power Dissipation (P
D) ........................ Internally Limited
(3)
Junction Temperature (T
J) ....................... –40°C to +125°C
Storage Temperature (T
S) ....................... –65°C to +150°C
Lead Temperature (soldering, 5 sec.) ....................... 260
°C
ESD(4) .............................................................................................. 2kV
Operating Ratings(2)
Input Voltage (V
IN) ......................................... +2.7V to +6V
Enable Input Voltage (V
EN) .................................. 0V to VIN
Junction Temperature (T
J) ....................... –40°C to +125°C
Thermal Resistance
SOT-23
JA) ..................................................... 235°C/W
2
×2 MLF™ (θ
JA) .................................................. 90°C/W


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