MIC5385 Datasheet, PDF (3/13 Pages) Micrel Semiconductor – Ultra Small Triple 150mA Output LDO

Micrel, Inc.
MIC5385
Absolute Maximum Ratings⁽¹⁾
Supply Voltage (V_IN) ........................................... -0.3V to 6V
Enable Voltage (V_EN)..........................................-0.3V to V_IN
Power Dissipation (P_D) ........................... Internally Limited⁽³⁾
Lead Temperature (soldering, 3µsec)........................ 260°C
Junction Temperature (T_J) ........................–40°C to +150°C
Storage Temperature (T_s) .........................–65°C to +150°C
ESD Rating⁽⁴⁾.................................................................. 2kV
Operating Ratings⁽²⁾
Supply Voltage (V_IN)......................................... 2.5V to 5.5V
Enable Voltage (V_EN).............................................. 0V to V_IN
Junction Temperature (T_J) ........................ –40°C to +125°C
Junction Thermal Resistance
2mm x 2mm Thin MLF^® (θ_JA).............................90°C/W
Electrical Characteristics⁽⁵⁾
V_IN = V_EN1 = V_EN2 = V_EN3 = V_OUT + 1V; highest of the three outputs; C_IN = C_OUT1 = C_OUT2 = C_OUT3 = 1µF; I_OUT1 = I_OUT2 = I_OUT3
= 100µA; T_J = 25°C, bold values indicate –40°C to +125°C, unless noted.
Parameter
Condition
Min
Typ Max Units
Output Voltage Accuracy
Variation from nominal V_OUT
–2.0
+2.0
%
Variation from nominal V_OUT; –40°C to +125°C
–3.0
+3.0
%
Line Regulation
Load Regulation⁽⁶⁾
Dropout Voltage⁽⁷⁾
V_IN = V_OUT +1V to 5.5V; I_OUT = 100µA
I_OUT = 100µA to 150mA
I_OUT = 50mA; V_OUT ≥ 2.8V
0.02
0.3
%
0.65
%
55
110 mV
I_OUT = 150mA; V_OUT ≥ 2.8V
155
310
mV
I_OUT = 50mA; V_OUT < 2.8V
60
135 mV
Ground Pin Current⁽⁸⁾
I_OUT = 150mA; V_OUT < 2.8V
I_OUT = 0mA; V_OUT > 1.3V, Single output enabled
180
380
mV
32
µA
I_OUT = 0mA; V_OUT > 1.3V, V_EN1=V_EN2= V_EN3 ≥ 1.2V
96
120
µA
Ground Pin Current in Shutdown V_EN1=V_EN2= V_EN3≤ 0.2V
0.05
1
µA
Ripple Rejection
f = up to 1kHz; C_OUT = 1µF; V_OUT < 2.5V
70
dB
f = 1kHz – 10kHz; C_OUT = 1µ F; V_OUT < 2.5V
50
dB
Current Limit
V_OUT = 0V
200
325
550 mA
Output Voltage Noise
C_OUT = 1µF, 10Hz to 100kHz
200
µV_RMS
Enable Input
Enable Input Voltage
Logic Low
0.2
V
EN1, EN2, EN3
Logic High
1.2
V
Enable Input Current
EN1, EN2, EN3
V_IL ≤ 0.2V
V_IH ≥ 1.2V
0.01
1
µA
0.01
1
µA
Turn-on Time
C_OUT = 1µF; I_OUT = 150mA
50
125
µs
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 product only.
6. Regulation is measured at constant junction temperature using low duty cycle pulse testing, 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
differential.
For outputs below 2.5V, dropout voltage is the input-to-output differential with the minimum input voltage 2.5V.
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.
December 2009
3
M9999-122109-A