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MP24943 Datasheet(PDF) 3 Page - Monolithic Power Systems

Part # MP24943
Description  3A, 55V, 100kHz Step-Down Converter with Programmable Output OVP Threshold
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Manufacturer  MPS [Monolithic Power Systems]
Direct Link  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP24943 Datasheet(HTML) 3 Page - Monolithic Power Systems

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MP24943 –3A, 55V, 100kHz STEP-DOWN CONVERTER
MP24943 Rev. 0.83
www.MonolithicPower.com
3
12/11/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN = 12V, TA = 25°C, unless otherwise noted.
Parameters
Symbol
Condition
Min
Typ
Max
Units
Feedback Voltage
VFB
4.5V
≤ VIN ≤ 55V
0.78
0.80
0.82
V
Feedback Bias Current
IBIAS(FB)
VFB = 0.8V
-100
10
100
nA
Output Over-Voltage
Reference
VOVREF
0.88
0.92
0.96
V
Switch-On Resistance
RDS(ON)
0.125
0.15
Switch Leakage
VEN = 0V, VSW = 0V
0.1
1
μA
Current Limit
Duty Cycle=10%
5.5
6.5
8
A
Oscillator Frequency
fSW
VFB = 0.6V
70
100
140
kHz
Bootstrap Voltage
VBST - VSW
4.3
5.5
V
Minimum-On Time
tON
50
100
250
ns
SW-rising edge
trise
50
100
ns
SW-falling edge
tfall
50
100
ns
EN-Input Low Voltage
0.4
V
EN-Input High Voltage
1.8
V
EN-Input Bias Current
VEN=0-6V
-10
-2
10
μA
Under-Voltage Lockout Threshold
Rising
3.0
3.3
3.6
V
Under-Voltage Lockout Threshold
Hysteresis
200
mV
Supply Current (Shutdown)
VEN=0V
4
10
μA
Supply Current (Quiescent)
VEN = 2V, VFB = 1V
650
800
μA
Thermal Shutdown
150
°C


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