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

部件名 MAXM17543
功能描述  Saves Board Space in Space-Constrained Applications
PDF  18 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

  MAXM17543 Datasheet HTML 1Page - Maxim Integrated Products MAXM17543 Datasheet HTML 2Page - Maxim Integrated Products MAXM17543 Datasheet HTML 3Page - Maxim Integrated Products MAXM17543 Datasheet HTML 4Page - Maxim Integrated Products MAXM17543 Datasheet HTML 5Page - Maxim Integrated Products MAXM17543 Datasheet HTML 6Page - Maxim Integrated Products MAXM17543 Datasheet HTML 7Page - Maxim Integrated Products MAXM17543 Datasheet HTML 8Page - Maxim Integrated Products MAXM17543 Datasheet HTML 9Page - Maxim Integrated Products Next Button
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Electrical Characteristics (continued)
(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)
Note 4: All limits are 100% tested at TA = +25°C. Maximum and minimum limits are guaranteed by design and characterized over
temperature.
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
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
MODE
MODE Threshold
VM_DCM MODE = VCC (DCM mode)
VCC - 1.6
V
VM_PFM MODE = open (PFM mode)
VCC/2
VM_PWM MODE = GND (PWM mode)
1.4
CURRENT LIMIT
Average Current-Limit Threshold IAVG_LIMIT VOUT = VFB = 0.8V, fSW = 200kHz
3.45
A
RESET
RESET Output Level Low
IRESET = 10mA
0.4
V
RESET Output Leakage Current
VRESET = 5.5V, TA = TJ = +25°C
-0.1
+0.1
µA
FB Threshold for RESET
Assertion
VFB_OKF VFB falling
90.5
92
94.6
%
FB Threshold for RESET
Deassertion
VFB_OKR VFB rising
93.8
95
97.8
%
RESET Deassertion Delay After
FB Reaches 95% Regulation
1024
Cycles
THERMAL SHUTDOWN
Thermal-Shutdown Threshold
Temperature rising
+165
°C
Thermal-Shutdown Hysteresis
10
°C
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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