Micrel, Inc.
MIC37150/51/52/53
Absolute Maximum Ratings
(1)
Supply Voltage (V
IN
) ......................................................6.5V
Enable Input Voltage (V
EN
)............................................6.5V
Power Dissipation .....................................Internally Limited
Junction Temperature .........................–40°C
≤
T
J
≤
+125°C
Storage Temperature (T
s
) ...................–65°C
≤
T
J
≤
+150°C
Lead Temperature (soldering, 5sec.)......................... 260°C
EDS Rating................................................................
Note 3
Operating Ratings
(2)
Supply voltage (V
IN
) ....................................... 2.25V to 6.0V
Enable Input Voltage (V
EN
).................................. 0V to 6.0V
Junction Temperature Range .............–40°C
≤
T
J
≤
+125°C
Maximum Power Dissipation.....................................
Note 4
Package Thermal Resistance
S-Pak (θ
JC
) ..........................................................2°C/W
Power SOIC-8 (θ
JA
) ...........................................63°C/W
e-Pad SOIC-8 (θ
JC
)............................................10°C/W
Electrical Characteristics
(5)
T
A
= 25°C with V
IN
= V
OUT
+ 1V; V
EN
= V
IN
;
bold
values indicate –40°C < T
J
< +125°C, unless otherwise noted.
Parameter
Output Voltage Accuracy
Output Voltage Line Regulation
Output Voltage Load Regulation
V
IN
– V
OUT
; Dropout Voltage,
Note 6
Ground Pin Current,
Note 7
Ground Pin Current in Shutdown
Current Limit
Start-up Time
Condition
I
L
= 10mA
10mA < I
OUT
< I
L(max)
, V
OUT
+ 1
≤
V
IN
≤
6V
V
IN
= V
OUT
+1.0V to 6.0V
I
L
= 10mA to 1.5A
I
L
= 750mA
I
L
= 1.5A
I
L
= 1.5A
V
IL
≤
0.5V, V
IN
= V
OUT
+ 1V
V
OUT
= 0
V
EN
= V
IN
, I
OUT
= 10mA, C
OUT
= 22µF
Regulator enable
Regulator shutdown
V
IL
≤
0.8V (regulator shutdown)
V
IH
≥
2.25V (regulator enabled)
Min
–1
Typ
Max
+1
Units
%
%
%
%
mV
mV
mA
µA
A
µs
V
–2
0.06
0.2
+2
0.5
1
350
500
17
1.0
2.25
170
30
4.0
500
Enable Input
Enable Input Threshold
Enable Pin Input Current
2.25
0.8
2
4
1
15
30
75
1
2
210
93
2
99.2
1.228
1.240
1.252
300
400
V
µA
µA
µA
µA
µA
µA
mV
mV
%
%
%
V
V
ppm/°C
Flag Output
I
FLG(LEAK)
V
FLG(LO)
V
FLG
V
OH
= 6V
V
IN
= 2.25V, I
OL
= 250µA,
Note 8
Low threshold, % of V
OUT
below nominal
Hysteresis
High threshold, % of V
OUT
below nominal
Reference Voltage
Note 9
Reference Voltage Temp.
Coefficient
Adjust Pin Bias Current
Adjust Pin Bias Current Temp.
Coefficient
1.215
20
40
0.1
1.265
Note 10
80
120
nA
nA
nA/°C
October 2007
4
M9999-101907
MICREL [ MICREL SEMICONDUCTOR ]
