MIC49300 Datasheet, PDF (3/8 Pages) Micrel Semiconductor – 3.0A LOW VOLTAGE LDO REGULATOR W/DUAL INPUT VOLTAGES

MIC49300
Absolute Maximum Ratings (Note 1)
Supply Voltage (V_IN) ....................................................... 8V
Bias Supply Voltage (V_BIAS) ............................................ 8V
Enable Input Voltage (V_EN) ............................................. 8V
Power Dissipation .................................... Internally Limited
ESD Rating, Note 3 ...................................................... 2kV
Micrel
Operating Ratings (Note 2)
Supply Voltage (V_IN) ....................................... 1.4V to 6.5V
Bias Supply Voltage (V_BIAS) ............................... 3V to 6.5V
Enable Input Voltage (V_EN) .................................. 0V to V_IN
Junction Temperature Range ............. –40°C ≤T_J ≤ +125°C
Package Thermal Resistance
S-PAK(θ_JC) ............................................................ 2°C/W
Electrical Characteristics
T_A = 25°C with V_BIAS = V_OUT +2.1V; V_IN = V_OUT + 1V; bold values indicate –40°C < T_J < +125°C, Note 4; unless otherwise specified.
Parameter
Conditions
Min Typ Max Units
Output Voltage Accuracy
At 25°C, fixed voltage options
Over temperature range
–1
+1
%
–2
+2
%
Line Regulation
Load Regulation
Dropout Voltage (V_IN – V_OUT)
Dropout Voltage (V_BIAS – V_OUT)
Note 4
V_IN = 2.0V to 6.5V
I_L = 0mA to 3A
I_L = 1.5A
I_L = 3A
I_L = 3A
–0.1 0.01 +0.1 %/V
0.2
0.5
%
125 200 mV
280 400 mV
1.5
2.1
V
Ground Pin Current, Note 5
Ground Pin Current in Shutdown
Current thru V_BIAS
Current Limit
Enable Input, Note 6
I_L = 0mA
I_L = 3A
V_EN ≤ 0.6V, (I_BIAS + I_CC), Note 6
I_L = 0mA
I_L = 3A
V_OUT = 0V
25
mA
25
50
mA
0.07
5
µA
20
35
mA
50
150
mA
6.5
9
A
Enable Input Threshold
(Fixed Voltage only)
Regulator enable
Regulator shutdown
1.6
V
0.6
V
Enable Pin Input Current
0.1
1.0
µA
Reference
Reference Voltage
Adjustable option only
0.891 0.9 0.909 V
0.882
0.918 V
Note 1.
Note 2.
Note 3.
Note 4.
Note 5.
Note 6.
Exceeding the absolute maximum rating may damage the device.
The device is not guaranteed to function outside its operating rating.
Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.
For V_OUT ≤1V, V_BIAS dropout specification does not apply due to a minimum 3V V_BIAS input.
I_GND = I_BIAS + (I_IN – I_OUT). At high loads, input current on V_IN will be less than the output current, due to drive current being supplied by V_BIAS.
Fixed output voltage versions only.
October 2003
3
MIC49300