Micrel, Inc.
MIC2590B
 
September 2008 
6
M9999-091808
 
Absolute Maximum Ratings
(1)
Supply Voltage
(12V
IN
) ..........................................................................+14V
(12MV
IN
).......................................................................14V
(5V
IN
) ..............................................................................+7V
(3V
IN
), (V
STBY
) .................................................................+7V
Any Logic Output Voltage ...............0.5 (min)/+5.5V (max)
Any Logic Input Voltage................... 0.5 (min)/+5.5V (max
Output Current (FAILT[A/B]#, /INT, SDA)...................10mA
Lead Temperature
IR Reflow, Peak Temperature..........................235 +5/0癈
Storage Temperature (T
s
).........................65癈 to +150癈
ESD Rating
(3)
..................................................................2kV
Operating Ratings
(2)
Supply Voltage
(12V
IN
)....................................................+11.65V to +12.6V
(12MV
IN
)................................................... 11.0V to 13.2V
(5V
IN
).......................................................... +4.85V to 5.25V
(3V
IN
)............................................................+3.1V to +3.6V
 (V
STBY
) ......................................................... +3.15V to 3.6V
Ambient Temperature (T
A
)..............................0癈 to +70癈
Junction Temperature (T
J
) .........................................125癈
Thermal Resistance
     TQFP (?/DIV>
JA
)......................................................56.5癈/W
 
 
 
 
Electrical Characteristics
(4)
 
12V
IN
 = 12V; 12MV
IN
 = 12V; 5V
IN
 = 5V; 3V
IN
 = 3.3V; V
STBY
 = 3.3V; T
A
 = 0癈 to 70癈; unless noted.
Power Control and Logic Sections
Symbol
Parameter
Condition
Min
Typ
Max
Units
I
CC12
 
I
CC5
 
I
CC33
 
I
CC12M
 
I
CCVSBY
 
Supply Current
 
 
0.6
1.2
0.5
1.0
2.5
2.0
2.0
0.7
2.0
5.0
mA
mA
mA
mA
mA
V
UVLO
 
Under Voltage Lockout
12V
IN
 increasing
3V
IN
 increasing
5V
IN
 increasing
12MV
IN
 increasing
V
STBY
 increasing
8
2.2
3.7
10
2.8
9
2.5
4.0
9
2.9
10
2.75
4.3
8
3.0
V
V
V
V
V
V
HYSUV
 
Under Voltage Lockout Hysteresis -
12V
IN
, 12MV
IN
, 5V
IN
, 3V
IN
 
 
 
180
 
mV
V
HYSSTBY
 
Under-voltage Lockout Hysteresis -
V
STBY
 
 
 
50
 
mV
V
UVTH
V
UVTH(12V)
V
UVTH(12MV)
V
UVTH(3V)
V
UVTH(5V)
 
V
UVTH(VAUX)
 
Power Good Under-Voltage Thresholds
12V
OUT
[A/B]
12MV
OUT
 [A/B]
3V
OUT
 [A/B]
5V
OUT
 [A/B]
V
AUX
[A/B]
 
12V
OUT
[A/B] decreasing
12MV
OUT
[A/B] decreasing
3V
OUT
[A/B] decreasing
5V
OUT
[A/B] decreasing
V
AUX
[A/B] decreasing
 
10.2
10.8
2.7
4.4
2.7
 
10.5
10.6
2.8
4.5
2.8
 
10.8
10.2
2.9
4.7
2.9
 
V
V
V
V
V
V
HYSPG
 
Power-Good Detect Hysteresis
 
 
30
 
mV
V
GATE
 
5V
GATE
/3V
GATE
 Voltage
 
12V
IN
15
 
12V
IN
 
V
I
GATE(SOURCE)
     5V
GATE
/3V
GATE
 Output Source
start cycle
15
25
35
I
GATE(SINK
)
5V
GATE
/3V
GATE
 Output Sink Fault
Current
any fault condition, V
GATE
 = 5V
 
70
 
mA
 
 
 
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