Micrel, Inc.
MIC37110/MIC37112
MIC37120/MIC37122
Absolute Maximum Ratings
(1)
Supply Voltage (V
IN
) ......................................... -0.3V to +6V
Enable Voltage (V
EN
). ....................................... -0.3V to +V
IN
Adjust Pin Voltage (V
ADJ
).................................. -0.3V to +V
IN
Lead Temperature (soldering, 5s) .............................. 260°C
Storage Temperature (T
s
) ......................... –65°C to +150°C
(3)
ESD Rating
HBM ......................................................................... 3kV
Operating Ratings
(2)
Supply Voltage (V
IN
) ................................. +2.375V to +5.5V
Enable Voltage (V
EN
). ............................................. 0V to V
IN
(4)
Power Dissipation (P
D(max)
)………………Internally Limited
Junction Temperature (T
J
) ........................ –40°C to +125°C
Package Thermal Resistance
SOT-223 (θ
JA
) .................................................... 40°C/W
SOIC-8 (θ
JA
) ....................................................... 63°C/W
Thin MLF-6 (θ
JA
) .............................................. 100°C/W
Electrical Characteristics
(5)
V
IN
= V
EN
= V
OUT
+ 1V; I
OUT
= 10mA; C
IN
= 1.0 µF; C
OUT
= 2.2µF; T
J
= 25°C,
bold
values indicate –40°C
≤
T
J
≤ +125°C,
unless noted.
Parameter
Power Supply Input
Input Voltage Range (V
IN
)
Input Supply UVLO
Input Supply UVLO Hysteresis
Ground Pin Current
(6)
Condition
Min.
Typ.
Max.
Units
2.375
5.5
2.2
100
V
V
mV
10mA
≤
I
OUT
≤
1.0A
V
EN
= V
OUT
= 0V
250
0.1
500
5
µA
µA
Ground Current in Shutdown
Reference
Adjust Pin Voltage
Output Voltage Accuracy
Load Regulation
Line Regulation
ADJ Pin Current
Current Limit
Current Limit
Dropout Voltage
Dropout Voltage (V
IN
−
V
OUT
)
(7)
Adjustable Option
Fixed Option
I
OUT
= 10mA to 1A
V
IN
= (V
OUT
+
1V) to 5.5V
V
ADJ
= 1.0V
0.975
-2
-2.5
-1.0
1
1.025
+2
+2.5
+1.0
V
%
%
%
µA
0.05
0.01
0.5
1
V
OUT
= 0V
1.2
2.3
4.0
A
I
OUT
= 1A
230
400
mV
Load Discharge Resistance (MIC37120/MIC37122)
Load Discharge Resistance
Enable Input
Enable Logic Level High
Enable Logic Level Low
EN Hysteresis
EN Pin Current
V
EN
= 0.2V (Regulator Shutdown)
V
IN
= V
EN
= 3.6V (Regulator Enabled)
1.2
0.75
0.65
100
0.1
0.1
1
1
0.25
V
V
mV
µA
V
EN
= 0V; V
IN
= 3.6V; I
OUT
= 3mA
30
Ω
December 2012
4
M9999-121312-A
MICREL [ MICREL SEMICONDUCTOR ]
