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MP2493DN 数据表(PDF) 3 Page - Monolithic Power Systems

部件名 MP2493DN
功能描述  2A, 36V, Low EMI Step-Down Converter with Programmable Output Current Limit
PDF  12 Pages
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制造商  MPS [Monolithic Power Systems]
网页  http://www.monolithicpower.com
标志 MPS - Monolithic Power Systems

MP2493DN 数据表(HTML) 3 Page - Monolithic Power Systems

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MP2493 – 2A, 36V, LOW EMI STEP-DOWN WITH PROGRAMMABLE OUTPUT CURRENT LIMIT
MP2493 Rev. 0.9
www.MonolithicPower.com
3
4/23/2010
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 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 ≤ 36V
0.78
0.8
0.82
V
Feedback Bias Current
IBIAS(FB)
VFB = 0.8V
10
nA
Switch On Resistance
RDS(ON)
0.25
Ω
Switch Leakage
VEN = 0V, VSW = 0V
0.1
10
μA
Current Limit
(5)
Peak current limit
2.5
3.0
3.5
A
Oscillator Frequency
fSW
VFB = 0.6V
100
130
160
kHz
Switching frequency
VFB = 0V
35
kHz
Boot-Strap Voltage
VBST - VSW
4.5
V
Minimum On Time
(5)
tON
VFB = 1V
100
ns
SW rising edge
(5)
trise
VIN=12V, VO=5V, IO=1.5A
50
ns
SW falling edge
(5)
tfall
VIN=12V, VO=5V, IO=1.5A
50
ns
Under Voltage Lockout Threshold Rising
3.0
3.3
3.6
V
Under Voltage Lockout Threshold Hysteresis
150
mV
EN Input Low Voltage
(6)
0.4
V
En Input High Voltage
(6)
1.8
V
EN Input Bias Current
(6)
VEN = 0-6V
–10
–2
10
μA
Supply Current (Shutdown)
VEN = 0V
4
10
μA
Supply Current (Quiescent)
VEN = 2V, VFB = 1V
500
800
μA
Thermal Shutdown
(5)
150
°C
Current Sense Voltage
VISP –VISN VISP, VISN 0.4–15V
90
100
110
mV
Input Bias Current (ISN, ISP)
IBIAS (ISN,ISP) VISP, VISN 0.4–15V
–1
0.1
+1
uA
Note:
5) Guaranteed by design
6) Enable function is only available for the MP2493DQ



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