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MIC47050 Datasheet, PDF (3/14 Pages) Micrel Semiconductor – 500mA ULDO with Low Input and Low Output Voltage
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Micrel, Inc.
MIC47050
Absolute Maximum Ratings(1)
IN Supply Voltage (VIN) ................................... –0.3V to +4V
Bias Supply Voltage (VBIAS)............................. –0.3V to +6V
Enable Voltage (VEN)....................................... –0.3V to +6V
Power Good Voltage (VPGOOD) ....................... .–0.3V to +6V
ADJ Pin Voltage (VADJ)................................... .–0.3V to +6V
OUT Pin Voltage (VOUT) ................................... .–0.3V to VIN
Lead Temperature (soldering,10 sec.)....................... 260°C
Storage Temperature (TS).........................–65°C to +150°C
ESD Rating(3)......................................................... 2kV HBM
Operating Ratings(2)
IN Supply Voltage (VIN) ............ +1.0V to +3.6V (VIN < VBIAS)
Bias Voltage (VBIAS)...................................... +2.3V to +5.5V
Enable Voltage (VEN)........................................... 0V to VBIAS
Power Good Voltage (VPGOOD) ........................... .0V to VBIAS
Output Voltage Range …………….. ................ 0.4V to 2.0V
Junction Temperature (TJ) ........................ –40°C to +125°C
Ambient Temperature (TA) .......................... –40°C to +85°C
Junction Thermal Resistance
2mm x 2mm MLF®-6L (θJA)................................90°C/W
2mm x 2mm MLF®-6L (θJC)................................45°C/W
Electrical Characteristics(4)
VIN = VOUT + 0.5V; VBIAS = VOUT+2.1V; COUT = 1µF; IOUT = 100µA; TJ = 25°C, bold values indicate –40°C≤ TJ ≤ +125°C, unless noted.
Parameter
Condition
Min. Typ. Max. Units
Input Supply
Input Voltage Range (VIN)
VIN UVLO Threshold(5)
VIN Rising
1.0
3.6
V
0.7 0.85 1.0
V
VIN UVLO Hysteresis
40
mV
Ground Current in Shutdown (IGND)
VEN ≤ 0.2V (Regulator Shutdown)
0.1
1.0
μA
Ground Current (IGND)
IOUT = 500mA; VIN = VOUT + 0.5V
6
μA
Bias Supply
BIAS Input Voltage (VBIAS)
VBIAS UVLO Threshold(5)
VBIAS Rising
2.3
5.5
V
1.7
2.1
2.3
V
VBIAS UVLO Hysteresis
75
mV
Dropout voltage (VBIAS - VOUT)
IOUT = 100mA
IOUT = 500mA
1.15
V
1.25 2.1
V
VBIAS Supply Current (IBIAS)
IOUT = 1mA; VBIAS = VOUT + 2.1V
330 500 μA
VBIAS Supply Current in Shutdown (IBIAS)
VEN ≤ 0.2V (Regulator Shutdown)
0.1
1.0
μA
Output Voltage
Dropout voltage
(VIN - VOUT)
IOUT = 100mA
IOUT = 500mA
9
50
mV
44
120 mV
Output Voltage Accuracy
VBIAS Line Regulation
IOUT = 100μA
IOUT = 100μA
VBIAS = VOUT + 2.1V to 5.5V
-1.5
+1.5 %
-2.0
+2.0 %
-0.1 0.015 0.1 %/V
March 2010
3
M9999-032310-A
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