Micrel, Inc. MIC37150/51/52/53
October 2007 4
M9999-101907
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 Condition Min Typ Max Units
I
L
= 10mA –1 +1 % Output Voltage Accuracy
10mA < I
OUT
< I
L(max)
, V
OUT
+ 1 ≤ V
IN
≤ 6V
–2 +2
%
Output Voltage Line Regulation V
IN
= V
OUT
+1.0V to 6.0V 0.06 0.5 %
Output Voltage Load Regulation I
L
= 10mA to 1.5A 0.2 1 %
I
L
= 750mA
350
mV
V
IN
– V
OUT
; Dropout Voltage,
Note 6
I
L
= 1.5A
500
mV
Ground Pin Current, Note 7
I
L
= 1.5A 17
30
mA
Ground Pin Current in Shutdown V
IL
≤ 0.5V, V
IN
= V
OUT
+ 1V 1.0
µA
Current Limit V
OUT
= 0 2.25
4.0
A
Start-up Time V
EN
= V
IN
, I
OUT
= 10mA, C
OUT
= 22µF 170
500
µs
Enable Input
Regulator enable
2.25
V Enable Input Threshold
Regulator shutdown
0.8
V
V
IL
≤ 0.8V (regulator shutdown)
2
4
µA
µA
Enable Pin Input Current
V
IH
≥ 2.25V (regulator enabled) 1 15
30
75
µA
µA
Flag Output
I
FLG(LEAK)
V
OH
= 6V
1
2
µA
µA
V
FLG(LO)
V
IN
= 2.25V, I
OL
= 250µA, Note 8
210
300
400
mV
mV
Low threshold, % of V
OUT
below nominal 93 %
Hysteresis 2 %
V
FLG
High threshold, % of V
OUT
below nominal 99.2 %
1.228 1.240 1.252 V Reference Voltage
Note 9 1.215 1.265
V
Reference Voltage Temp.
Coefficient
Note 10
20
ppm/°C
Adjust Pin Bias Current 40
80
120
nA
nA
Adjust Pin Bias Current Temp.
Coefficient
0.1 nA/°C
