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Micrel, Inc.
Absolute Maximum Ratings (1)
V IN , V CS to PGND/AGND ................................ -0.3V to +22V
V DIM , V EN to PGND/AGND ..................................-0.3V to V IN
V LX to PGND/AGND ................................. -0.3V to V IN +1.0V
V CC to PGND/AGND ..................................... -0.3V to +7.0V
V CS to V IN ...................................................................... 0.3V
V PGND to V AGND ............................................... -0.3V to +0.3V
Storage Temperature (Ts).........................–60°C to +150°C
MIC3201
Operating Ratings (2)
Supply Voltage (V IN ).......................................... 6.0V to 20V
Junction Temperature (T J ) .........................-40°C to +125°C
Junction Thermal Resistance
SOIC ( θ JA ) ..........................................................41°C/W
SOIC ( θ JC ).......................................................14.7°C/W
Lead Temperature (Soldering, 10sec) ....................... 260°C
ESD Ratings (HBM) (3) ...... ................................………..2kV
(MM) (3) ......................... ...........................100V
Electrical Characteristics (4)
V IN = 12V, V DIM = V EN = V IN , C VCC = 1μF, bold values indicate –40°C ≤ T J ≤ +125°C, unless noted.
Typical values are at T A = +25°C.
Symbol
V IN
Parameter
Operating Input Voltage Range
Condition
Min
6.0
Typ
Max
20.0
Units
V
I S
I SD
V CS(MAX)
V CS(MIN)
V HYS
Supply Current
Shut Down Supply Current
Sense Voltage Threshold High
Sense Voltage Threshold Low
Current Sense Hysteresis
LX open
V EN = 0V
V IN - V CS
V IN - V CS
T A = 25oC
206
171
1.2
35
1.75
1
224
189
mA
μA
mV
mV
mV
Current Sense Response Time
CS Pin Input Current
V CS Rising
V CS Falling
V IN - V CS = 200mV
100
60
3
ns
ns
μA
R DSON
Internal Switch R ON
300
550
m ?
F MAX
VCC
EN HI
EN LO
Maximum Switching Frequency
VCC Regulator
EN Input Voltage High
EN Input Voltage Low
2.0
6
1.0
0.4
MHz
V
V
V
EN Input Current High
EN Input Leakage Low
V EN =12V
V EN = 0V
30
50
1
μA
μA
DIM HI
DIM LO
DIM Input Voltage High
DIM Input Voltage Low
2.0
0.4
V
V
F DIM
DIM Input Current High
DIM Input Leakage Low
Maximum DIM Frequency
V DIM =12V
V DIM = 0V
22
30
1
20
μA
μA
kHz
T LIM
T LIMHYS
LX Pin Leakage Current
Over-Temperature Shutdown
Over-Temperature Shutdown Hysteresis
V IN - V CS ≥ 250mV
V LX =V IN
5
165
20
μA
oC
oC
Start-up Time
From EN Pin going high,
300
μs
DIM = 12V, C VCC = 1μF
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.
4. Specification for packaged product only.
February 2011
3
M9999-021011-B
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