MIC5231_08 Datasheet, PDF (3/7 Pages) Micrel Semiconductor – Micropower μCap LDO Regulator

Micrel, Inc.
MIC5231
Absolute Maximum Ratings⁽¹⁾
Supply Voltage (V_IN) ...................................... –0.6V to +14V
Lead Temperature (soldering, 5sec.)......................... 260°C
Storage Temperature (T_s) .........................–60°C to +150°C
ESD Rating⁽³⁾.................................................................. 2kV
Operating Ratings⁽²⁾
Supply Voltage (V_IN)........................................ 3.5VV to 12V
Ambient Temperature (T_A) .......................... –40°C to +85°C
Junction Temperature (T_J) ........................ –40°C to +125°C
Thermal Resistance⁽⁴⁾
Electrical Characteristics
V_IN = V_OUT + 1V; I_L = 100µA; C_L = 0.47µF; T_J = 25°C, bold values indicate –40°C≤ T_J ≤ +125°C, unless noted.
Symbol
Parameter
Condition
Min Typ Max
Units
V_OUT
Output Voltage Accuracy
variation from nominal V_OUT
–2
+2
%
–3
+3
%
∆V_OUT/∆_T
Output Voltage
Temperature Coefficient
Note 5
250
ppm/°C
∆V_OUT/V_OUT
Line Regulation
Load Regulation
V_IN = 6V to 12V
I_L = 10µA to 10mA, Note 6
0.2
0.25
%
0.2
1
%
V_DO
Dropout Voltage, Note 7
I_Q
Ground Pin Current
PSRR
Ripple Rejection
Enable Input
I_L = 1mA
I_L = 10mA
V_IN = 6V, I_L = 10mA
V_IN = 12V, I_L = 10mA
f = 100Hz, I_L = 100µA
15
mV
150
300
mV
0.65
3
µA
1.1
4
µA
50
dB
V_ENL
I_ENL
Enable Input Voltage
Enable Input Current
V_EN = logic low (regulator off)
V_EN = logic high (regulator on)
V_ENL ≤ 0.18V (regulator off)
0.4
0.18
V
1.4
V
1
nA
I_ENH
Enable Input Current
V_ENH ≥ 1.4V (regulator on)
1
nA
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive. Handling precautions recommended.
4. The maximum allowable power dissipation at any T_A (ambient temperature) is P_D(max) = (T_J(max) – T_A) ÷ θ_JA. The θ_JC of the MIC5231 is 130°C/W.
Mounted to a standard PC board, the θ_JA is approximately 235°C/W.
5. Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.
6. Regulation is measured at constant junction temperature using low duty cycle pulse testing.
7. Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at 1Vdifferential.
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.
November 2008
3
M9999-110408-B