MIC5234_11 Datasheet, PDF (3/16 Pages) Micrel Semiconductor – Low-Quiescent Current 150mA LDO Regulator

Micrel, Inc.
MIC5234
Absolute Maximum Ratings⁽¹⁾
Supply Voltage (V_IN) ....................................... −20V to +32V
Power Dissipation⁽³⁾...................................Internally Limited
Junction Temperature (T_J) ....................................... +150°C
Storage Temperature (T_S)......................... −65°C to +150°C
Lead Temperature (soldering, 10s)............................ 260°C
ESD Rating⁽⁴⁾ ................................................ ESD Sensitive
Operating Ratings⁽²⁾
Supply Voltage (V_IN)...................................... +2.3V to +30V
Enable Voltage (V_EN).......................................... 0V to +30V
Junction Temperature (T_J) ........................ –40°C to +125°C
Package Thermal Resistance
ePad SOIC (θ_JA) ................................................41°C/W
Electrical Characteristics⁽⁵⁾
V_IN = V_OUT + 1V; V_EN = 2.0V; C_OUT = 4.7µF, I_OUT = 100µA; T_J = 25°C, bold values indicate –40°C ≤ T_J ≤ +125°C, unless noted.
Symbol
Parameter
Condition
Min. Typ. Max. Units
V_ADJ
Feedback Voltage
1.2054 1.23 1.2546
V
ΔV_OUT/ΔT
Output Voltage
Temperature Coefficient⁽⁶⁾
50
ppm/°C
ΔV_OUT/V_OUT
Line Regulation
ΔV_OUT/V_OUT
Load Regulation
V_IN = V_OUT + 1V to 30V
I_OUT = 100µA to 50mA⁽⁷⁾
I_OUT = 100µA to 150mA⁽⁷⁾
0.2
0.5
%
0.15 0.3
0.5
%
0.3
0.6
1.0
I_OUT = 100µA
ΔV
Dropout Voltage⁽⁸⁾
I_OUT = 50mA
I_OUT = 100mA
50
120
230 400
mV
270
I_GND
I_GND(SHDN)
Ground Pin Current
Ground Pin in Shutdown
I_OUT = 150mA
V_EN = 2.0V, I_OUT = 100µA
V_EN = 2.0V, I_OUT = 50mA
V_EN = 2.0V, I_OUT = 100mA
V_EN = 2.0V, I_OUT = 150mA
V_EN = 0V, V_IN = 30V
320 550
20
30
µA
0.5
0.9
1.5
mA
2.8
5.0
0.1
1
µA
I_SC
Short-Circuit Current
V_OUT = 0V
150 260 400
mA
e_N
Output Noise
10Hz to 100kHz, V_OUT = 3.0V, C_OUT = 2.2µF
160
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. The maximum allowable power dissipation of any T_A (ambient temperature) is P_D(MAX) = (T_J(MAX) − T_A) ÷ θ_JA. Exceeding the maximum allowable power
dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.
4. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
5. Specification for packaged parts only.
6. Output voltage temperature coefficient is defined as the worst-case voltage change divided by the total temperature range.
7. Regulation is measured at constant junction temperature using pulse testing with a low duty cycle. Changes in output voltage due to heating effects
are covered by the speculation for thermal regulation.
8. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal value measured at
V_IN=V_OUT+1V.
September 2011
3
M9999-092711-B