MIC2225 Datasheet, PDF (4/14 Pages) Micrel Semiconductor – 2MHz 600mA Synchronous Buck Regulator with 300mA LDO

Micrel, Inc.
MIC2225
Electrical Characteristics LDO⁽⁴⁾
C_OUTLDO = 2.2µF, I_OUTLDO = 100µA; T_J = 25°C, bold values indicate –40°C < T_J < +125°C; unless noted.
Parameter
Condition
Min Typ
Input Voltage
Output Voltage Accuracy
Line Regulation
Turn-on Time
Load Regulation
Dropout Voltage, Note 5
Ripple Rejection
Current Limit
Output Voltage Noise
Variation from nominal V_OUT
Variation from nominal V_OUT; –40°C to +125°C
V_IN = V_OUT +1V to 5.5V; I_OUT = 100µA
I_LOAD = 300mA
I_OUT = 100µA to 300mA @ V_IN = V_OUT + 1
I_OUT = 300mA @ V_IN = 2.7V
f = 1kHz; C_OUT = 2.2µF
f = 20kHz; C_OUT = 2.2µF
V_OUT = 0V
C_OUT = 2.2µF, 10Hz to 100kHz
2.7
–2.0
–3.0
0.2
30
0.70
210
43
17
400
470
Max
5.5
+2.0
+3.0
Units
V
%
%
%
µs
%
mV
dB
dB
mA
µV_RMS
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. Human body model, 1.5k in series with 100pF.
4. Specification for packaged product only.
5. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal value that is initially measured at
a 1V differential. For outputs below 2.7V, the dropout voltage is the input-to-output voltage differential with a minimum input voltage of 2.7V.
October 2007
4
M9999-101107-B