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MAXM17543 数据表(PDF) 3 Page - Maxim Integrated Products

部件名 MAXM17543
功能描述  4.5V to 42V, 2.5A High-Efficiency, DC-DC Step- Down Power Module with Integrated Inductor
PDF  20 Pages
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制造商  MAXIM [Maxim Integrated Products]
网页  https://www.maximintegrated.com/en.html
标志 MAXIM - Maxim Integrated Products

MAXM17543 数据表(HTML) 3 Page - Maxim Integrated Products

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(VIN = VEN = 24V, RRT = 40.2kΩ (500kHz) to SGND, VPGND = VMODE = VSYNC = VSGND = 0V, VCC = LX = SS = RESET = OUT =
open, VBST to VLX = 5V, VFB = 1V, TA = TJ = -40ºC to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages
are referenced to SGND, unless otherwise noted.) (Note 4)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
LOGIC INPUTS
EN Threshold
VENR
VEN rising
1.192
1.215
1.26
V
VENF
VEN falling
1.068
1.09
1.131
V
Enable Pullup Resistor
RENP
Pullup resistor between IN and EN pins
3.15
3.3
3.45
MΩ
LDO
VCC Output Voltage Range
VCC
6V < VIN < 42V, 1mA < IVCC < 25mA
4.75
5
5.25
V
VCC Current Limit
IVCC_MAX VIN = 6V, VCC = 4.3V
26.5
60
100
mA
VCC Dropout
VCC_DO VIN = 4.5V, IVCC = 20mA
4.2
V
VCC UVLO
VCC_UVR VCC rising
4.05
4.2
4.3
V
VCC_UVF VCC falling
3.65
3.8
3.9
V
OUTPUT SPECIFICATIONS
Line Regulation Accuracy
VIN = 6.5V to 42V, VOUT = 5V
0.1
mV/V
Load Regulation Accuracy
Tested with IOUT = 0A and 1A
1
mV/A
FB Regulation Voltage
VFB_REG
MODE = SGND
0.887
0.910
V
MODE = open
0.890
0.915
0.936
V
FB Input Bias Current
IFB
0V < VFB < 1V, TA = +25°C
-50
+50
nA
FB Undervoltage Trip Level to
Cause Hiccup
VFB_HICF
0.56
0.58
0.65
V
Hiccup Timeout
32,768
Cycles
SOFT-START (SS)
Charging Current
ISS
VSS = 0.5V
4.7
5
5.3
μA
RT AND SYNC
Switching Frequency
fSW
RRT = 210kΩ
90
100
110
kHz
RRT = 9.76kΩ
1800
kHz
RRT = open
450
500
550
kHz
SYNC Frequency Range
1.1 x
fSW
1.4 x
fSW
kHz
SYNC Pulse Width
50
ns
SYNC Threshold
VIH
2.1
V
VIL
0.8
Electrical Characteristics (continued)
www.maximintegrated.com
Maxim Integrated │ 3
MAXM17543
4.5V to 42V, 2.5A High-Efficiency, DC-DC Step-Down
Power Module with Integrated Inductor



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