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MIC47150 Datasheet, PDF (3/11 Pages) Micrel Semiconductor – 1.5A, Low Voltage, Adjustable, High-Bandwidth LDO Regulator with Dual Input Supplies
Micrel, Inc.
MIC47150
Absolute Maximum Ratings(1)
Supply Voltage (VIN) ......................................... -0.3V to +8V
Bias Supply Voltage (VBIAS).............................. -0.3V to +8V
Power Dissipation .....................................Internally Limited
ESD Rating(3).................................................................. 2kV
Operating Ratings(2)
Supply Voltage (VIN)..................................... +1.4V to +6.5V
Bias Supply Voltage (VBIAS)............................. +3V to +6.5V
Junction Temperature (TJ) ..................–40°C ≤ TJ ≤ +125°C
Package Thermal Resistance
TO-252 (θJC) ........................................................3°C/W
TO-252 (θJA).......................................................56°C/W
Electrical Characteristics(4)
VIN = VOUT + 1V, VBIAS = VOUT + 2.1V, IOUT = 10mA; TA = 25°C, bold values indicate –40°C≤ TJ ≤ +125°C, unless noted.
Symbol Parameter
Condition
Min Typ Max Units
VLNREG Line Regulation
VIN = (VOUT +1V) to 6.5V
–0.1 0.01 +0.1
%/V
VLDREG Load Regulation
IOUT = 10mA to 1.5A
0.2
1.5
%
VDO
Dropout Voltage (VIN - VOUT)
IOUT = 750mA
IOUT = 1.5A
130
300
mV
280
500
mV
VDO(BIAS) Dropout Voltage (VBIAS - VOUT),
Note 5
IOUT = 750mA
IOUT = 1.5A
1.3
1.65
2.1
V
IGND
Ground Pin Current, Note 6
IOUT = 10mA
IOUT = 1.5A
15
15
30
mA
IBIAS
Current thru VBIAS
IOUT = 10mA
IOUT = 1.5A
9
25
mA
32
mA
ILIM
Current Limit
VOUT = 0V
1.6
2.3
3.4
A
4
A
TSD
Thermal Shutdown
168
°C
Thermal Shutdown Hysteresis
10
°C
Reference (Adjust Pin)
VADJ
Reference Voltage
0.891 0.9 0.909
V
0.882
0.918
V
IADJ
Adjust Pin Current
VADJ = 1.2V
0.01
1
μA
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, 1.5kΩ in series with 100pF.
4. Specification for packaged product only.
5. For VOUT ≤1V, VBIAS dropout specification does not apply due to a minimum 3V VBIAS input.
6. IGND = IBIAS + (IIN – IOUT). At high loads, input current on VIN will be less than the output current, due to drive current being supplied by VBIAS.
October 2009
3
M9999-102309-A