MIC5156/5157/5158 Micrel, Inc.
MIC5156/5157/5158 4 August 2005
Electrical Characteristics
(Note 5)
V
DD
= 5V, V
EN
= 5V; T
A
= 25°C; 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 µA
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 µA
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 µA
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 config.) 3.250 3.3 3.350 V
MIC5157, 5V pin to S pin (5V config.) 4.950 5.0 5.050 V
MIC5157, V
DD
= 7V, (12V config.) 11.70 12 12.30 V
MIC5158, 5V FB pin to EA pin (5V config.) 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 configuration. External MOSFET not used.
Note 5. Specification 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°C to +150°C
Lead Temperature (soldering 10 sec.) .......................
300°C
Operating Ratings (Note 2)
Ambient Temperature Range (T
A
)
MIC515xBM/BN ...................................... –40°C to +85°C
Junction Temperature (T
J
) ....................................... +150°C
Thermal Resistance (θ
JA
)
Package MIC5156 MIC5157/8
DIP ................................ 100°C/W ..................... 90°C/W
SOIC ............................. 160°C/W ................... 120°C/W
