MIC5156/5157/5158
Micrel, Inc.
MIC5156/5157/5158
4
August 2005
Electrical Characteristics
(Note 5)
V
DD
= 5V, V
EN
= 5V; T
A
= 25癈; unless noted.
Symbol
Parameter
Condition
Min
Typ
Max     Units
V
DD
Supply Voltage
3
36
V
I
DD(ON)
Supply Current MIC5156
Operating, V
EN
= 5V
2.7
10
mA
I
DD(OFF)
Shutdown, V
EN
= 0V
0.1
5
礎
I
DD(ON)
Supply Current MIC5157/8
Operating, V
EN
= 5V
4.5
10
mA
I
DD(OFF)
Shutdown, V
EN
= 0V
0.1
5
礎
V
IH
Enable Input Threshold
High
2.4
1.3
V
V
IL
Low
1.3
0.8
V
EN I
B
Enable Input Bias Current
V
EN
= 2.4V
20
25
礎
V
CP
Max. Charge Pump Voltage
V
CP
V
DD
, V
DD
> 10V
17.5
18.5
V
f
CP
Charge Pump Frequency
160
kHz
V
OUT MAX
   Maximum Gate Drive Voltage
V
SOURCE
= 0V
(MIC5157/8)
V
DD
= 3.5V
5
7.0
9
V
V
DD
= 5V
9
11.3
15
V
V
DD
= 12V
24
28
30
V
V
OUT MIN
    Minimum Gate Drive Voltage
V
SOURCE
> V
OUT(NOM)
1.0
V
V
LIM
Current Limit Threshold
V
DD
V
D
@ I
LIM
28
35
42
mV
V
S
Source Voltage
Short G (gate) to (S) source, Note 4
MIC5156-3.3
3.267
3.3
3.333
V
MIC5156-5.0
4.950
5.0
5.050
V
MIC5157, 3.3V pin to S pin (3.3V cong.)
3.250
3.3
3.350
V
MIC5157, 5V pin to S pin (5V cong.)
4.950
5.0
5.050
V
MIC5157, V
DD
= 7V, (12V cong.)
11.70
12
12.30
V
MIC5158, 5V FB pin to EA pin (5V cong.)
4.925
5.0
5.075
V
V
BG
Bandgap Reference Voltage
MIC5156 [adjustable] and MIC5158
1.222     1.235     1.248
V
V
LR
Output Voltage Line Regulation    5V < V
DD
< 15V, V
OUT
= 3.3V
2
7
mV
V
GS MAX
Gate to Source Clamp
14
16.6
20
V
V
FT
Flag Comparator Threshold
% of nominal V
SOURCE
92
%
V
FH
Flag Comparator Hysteresis
% of nominal V
SOURCE
3
%
V
SAT
Flag Comparator Sat. Voltage
I
FLAG
= 1mA
0.09
0.2
V
Note 1. Exceeding the absolute maximum rating may damage the device.
Note 2.   The device is not guaranteed to function outside its operating rating.
Note 3.   Devices are ESD sensitive. Handling precautions recommended.
Note 4.   Test conguration. External MOSFET not used.
Note 5.   Specication for packaged product only.
Absolute Maximum Ratings (Note 1)
Supply Input (V
DD
) .......................................................+38V
Enable Input (V
EN
) ..........................................0.3V to 36V
Gate Output (V
G
) MIC5156 .........................................+55V
Charge Pump Node (V
CP
) MIC5157/8 ........................+55V
Source Connection (V
S
) ...................................1.3 to +36V
Flag (V
FLAG
) ....................................................0.3 to +40V
Storage Temperature (T
S
) ........................ 65癈 to +150癈
Lead Temperature (soldering 10 sec.) ....................... 300癈
Operating Ratings (Note 2)
Ambient Temperature Range (T
A
)
MIC515xBM/BN ...................................... 40癈 to +85癈
Junction Temperature (T
J
) ....................................... +150癈
Thermal Resistance (?/DIV>
JA
)
Package
MIC5156
MIC5157/8
DIP ................................100癈/W .....................90癈/W
SOIC .............................160癈/W ...................120癈/W