MIC3833 查看數據表（PDF） - Micrel
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MIC3833 Datasheet PDF : 10 Pages
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MIC3832/3833
Micrel
Parameter
Conditions
Min Typical Max Units
Current Limit/Shutdown Section
Bias Current
–0.02
µA
Current Limit Threshold
0.9
1.0
1.1
V
Shutdown Threshold
1.125 1.25 1.375 V
Delay to Output
400 600
ns
Front Edge Blanking Time
140
ns
PWM Comparator Section
Bias Current
measured at CMR (pin 12)
–2 –0.05 2
µA
Duty Cycle Range
C = 2.2nF
0
85
%
Delay to Output
300 500
ns
Output Sections
Output Low Level
Output High Level
Rise Time
Fall Time
UVLO Saturation
Q to Q Overlap
ISINK = 20mA
ISINK = 200mA
ISOURCE = 20mA
ISOURCE = 200mA
CL = 1000pF
CL = 1000pF
ISINK = 1mA
Q rising, Q falling, 50%
0.1
0.4
V
1.5
2.5
V
12.5
V
12 13.1
V
50
150
ns
50
150
ns
0.7
1.1
V
50
ns
Q to Q Overlap
Q rising, Q falling, 50%
50
ns
Undervoltage Lockout Section
Upper Threshold—Startup
MIC3832
15.9
V
MIC3833
8.3
V
Lower Threshold—Operating
MIC3832
9.8
V
(Shutdown)
MIC3833
7.8
V
Total Standby Current
Startup Current
0.04 0.2
mA
Operating Supply
17
mA
VCC Zener Voltage
ICC = 25mA
22
V
Note 1
Note 2
Note 3
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Electrical specifications do not apply when
operating the device beyond its specified Operating Ratings.
Minimum and maximum Electrical Characteristics are 100% tested at TA = 25°C and TA = 85°C, and 100% guaranteed over the entire range.
Typicals are characterized at 25°C and represent the most likely parametric norm.
All pins ESD protected to 2kV. Test conditions: Supply pin grounded; all other pins floating.
4-138
April 1998
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