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MIC2104 Datasheet(PDF) 5 Page - Micrel Semiconductor

Part # MIC2104
Description  75V, Synchronous Buck Controllers featuring Adaptive On-Time Control
PDF  38 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC2104 Datasheet(HTML) 5 Page - Micrel Semiconductor

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Micrel, Inc.
MIC2103/04
November 26, 2013
5
Revision 2.0
Electrical Characteristics
(4) (Continued)
VIN = 48V, VOUT = 5V, VBST – VSW = 5V; TA = 25°C, unless noted. Bold values indicate −
40°C ≤ TJ ≤ +125°C.
Parameter
Condition
Min.
Typ.
Max.
Units
Enable Control
EN Logic Level High
1.8
V
EN Logic Level Low
0.6
V
EN Hysteresis
200
mV
EN Bias Current
VEN = 48V
23
40
µA
Oscillator
Switching Frequency
VFREQ = VIN
400
600
750
kHz
VFREQ = 50%VIN
300
Maximum Duty Cycle
85
%
Minimum Duty Cycle
VFB > 0.8V
0
%
Minimum Off-Time
140
200
260
ns
Soft Start
Soft-Start time
5
ms
Short Circuit Protection
Current-Limit Threshold
VFB = 0.79V
-30
-14
0
mV
Short-Circuit Threshold
VFB = 0V
-23
-7
9
mV
Current-Limit Source Current
VFB = 0.79V
60
80
100
µA
Short-Circuit Source Current
VFB = 0V
27
36
47
µA
FET Drivers
DH, DL Output Low Voltage
ISINK = 10mA
0.1
V
DH, DL Output High Voltage
ISOURCE = 10mA
VPVDD - 0.1V
or
VBST - 0.1V
V
DH On-Resistance, High State
2.1
3.3
Ω
DH On-Resistance, Low State
1.8
3.3
Ω
DL On-Resistance, High State
1.8
3.3
Ω
DL On-Resistance, Low State
1.2
2.3
Ω
SW, BST Leakage Current
50
µA



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