MIC5311 Datasheet, PDF (3/11 Pages) Micrel Semiconductor – LowQ Mode Dual 300mA LDO

Micrel, Inc.
Absolute Maximum Ratings⁽¹⁾
Supply Input Voltage (V_IN) .............................. 0V to 6V
Enable Input Voltage (V_EN)............................. 0V to 6V
LowQ™ Input Voltage (V_LowQ™)...................... 0V to 6V
Power Dissipation (P_D) ..................Internally Limited ⁽³⁾
Junction Temperature ....................... -40°C to +125°C
Lead Temperature (soldering, 5sec.) .................260°C
Storage Temperature (T_s) ................. -65°C to +150°C
MIC5311
Operating Ratings⁽²⁾
Supply Input Voltage (V_IN)..........................2.5V to 5.5V
Enable Input Voltage (EN1/EN2/LowQ™) ...... 0V to V_IN
Junction Temperature (T_J) .................. -40°C to +125°C
Package Thermal Resistance
MLF-10 (θ_JA) ................................................. 63°C/W
Electrical Characteristics (Full Power Mode)
V_IN = V_OUT + 1.0V for higher output of the regulator pair; LowQ™ = V_IN; C_OUT = 2.2µF, I_OUT = 100µA; T_J = 25°C, bold
values indicate -40°C to +125, unless noted.
Parameter
Output Voltage Accuracy
Line Regulation
Conditions
Variation from nominal V_OUT
Variation from nominal V_OUT; -40°C to +125°C
V_IN = V_OUT +1V to 5.5V
Load Regulation
Dropout Voltage
Ground Pin Current
I_OUT = 100µA to 150mA
I_OUT = 100µA to 300mA
I_OUT = 150mA
I_OUT = 300mA
I_OUT1 = I_OUT2 = 100µA to 300mA
Ground Pin Current in
Shutdown
V_EN < 0.2V
Ripple Rejection
f = up to 1kHz; C_OUT = 2.2µF ceramic; C_BYP = 10nF
f = 1kHz – 20kHz; C_OUT = 2.2µF ceramic; C_BYP = 10nF
Current Limit
V_OUT = 0V (Both Regulators)
Output Voltage Noise
C_OUT = 2.2µF, C_BYP = 0.01µF, 10Hz to 100kHz
Enable and LowQ™ Input (EN1/EN2/LowQ™)
Enable Input Voltage
Logic Low
Logic High
Enable Input Current
Turn-on Time
Light Load Response
Response Time ⁽⁴⁾
V_IL < 0.2V
V_IH > 1.0V
C_OUT = 2.2µF; C_BYP = 0.01µF
Into Light Load
Out of Light Load
Min Typ Max Units
-1.0
+1.0
%
-2.0
+2.0
%
0.02
0.3
0.6
%/V
0.35 1.0
%
0.7 1.5
%
60
mV
120 240 mV
28
45
50
µA
µA
0.1
µA
65
dB
35
dB
350 450 700 mA
45
µVrms
0.2
V
1.0
V
0.1 1
µA
0.1 1
µA
300 500
µs
50
µs
50
µs
February 2005
3
M9999-021105
[phone]