MIC47050_12 Datasheet, PDF (4/16 Pages) Micrel Semiconductor – 500mA ULDO™ with Low Input and Low Output Voltage

Micrel, Inc.
MIC47050
Absolute Maximum Ratings⁽¹⁾
IN Supply Voltage (V_IN) ................................... –0.3V to +4V
Bias Supply Voltage (V_BIAS)............................. –0.3V to +6V
Enable Voltage (V_EN)....................................... –0.3V to +6V
Power Good Voltage (V_PGOOD) ....................... .–0.3V to +6V
ADJ Pin Voltage (V_ADJ)................................... .–0.3V to +6V
OUT Pin Voltage (V_OUT) ................................... .–0.3V to V_IN
Lead Temperature (soldering,10 sec.)....................... 260C
SEStoDraRgeatTinegm₍₃p_{)..e..r.a..t.u..r.e...(.T..S..)....................................................–..6..5..}_{.C....to2k+V15H0B}_MC
Operating Ratings⁽²⁾
IN Supply Voltage (V_IN) ............ +1.0V to +3.6V (V_IN < V_BIAS)
Bias Voltage (V_BIAS)...................................... +2.3V to +5.5V
Enable Voltage (V_EN)........................................... 0V to V_BIAS
Power Good Voltage (V_PGOOD) ........................... .0V to V_BIAS
Output Voltage Range …………….. ................ 0.4V to 2.0V
Junction Temperature (T_J) ........................ –40°C to +125°C
Ambient Temperature (T_A) .......................... –40°C to +85°C
Junction Thermal Resistance
2mm x 2mm MLF^®-6L (_JA)................................90°C/W
2mm x 2mm MLF^®-6L (_JC)................................45°C/W
2mm x 2mm Thin MLF^®-6L (_JA)........................90°C/W
2mm x 2mm Thin MLF^®-6L (_JC) .......................45°C/W
Electrical Characteristics⁽⁴⁾
V_IN = V_OUT + 0.5V; V_BIAS = V_OUT+2.1V; C_OUT = 1µF; I_OUT = 100µA; T_J = 25°C, bold values indicate –40°C≤ T_J ≤ +125°C, unless noted.
Parameter
Condition
Min. Typ. Max. Units
Input Supply
Input Voltage Range (V_IN)
V_IN UVLO Threshold⁽⁵⁾
V_IN Rising
1.0
3.6
V
0.7 0.85 1.0
V
V_IN UVLO Hysteresis
40
mV
Ground Current in Shutdown (I_GND)
V_EN ≤ 0.2V (Regulator Shutdown)
0.1
1.0
A
Ground Current (I_GND)
I_OUT = 500mA; V_IN = V_OUT + 0.5V
6
15
A
Bias Supply
BIAS Input Voltage (V_BIAS)
V_BIAS UVLO Threshold⁽⁵⁾
V_BIAS UVLO Hysteresis
V_BIAS Rising
2.3
5.5
V
1.7
2.1
2.3
V
75
mV
Dropout voltage (V_BIAS - V_OUT)
I_OUT = 100mA
I_OUT = 500mA
1.15
V
1.25 2.1
V
V_BIAS Supply Current (I_BIAS)
I_OUT = 1mA; V_BIAS = V_OUT + 2.1V
330
500
A
V_BIAS Supply Current in Shutdown (I_BIAS)
V_EN ≤ 0.2V (Regulator Shutdown)
0.1
1.0
A
Output Voltage
Dropout voltage
(V_IN - V_OUT)
I_OUT = 100mA
I_OUT = 500mA
9
50
mV
44
120 mV
Output Voltage Accuracy
V_BIAS Line Regulation
I_OUT = 100A
I_OUT = 100A
V_BIAS = V_OUT + 2.1V to 5.5V
-1.5
+1.5
%
-2.0
+2.0
%
-0.1 0.015 0.1 %/V
April 2012
4
M9999-040312-B