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MAX17543 数据表(PDF) 6 Page - Maxim Integrated Products

部件名 MAX17543
功能描述  Synchronous Step-Down DC-DC Converter
PDF  19 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

MAX17543 数据表(HTML) 6 Page - Maxim Integrated Products

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(VIN = VEN/UVLO = 24V, VPGND = VSGND = 0V, CVIN = CVCC = 2.2µF, CBST = 0.1µF, CSS = 5600pF, RT = MODE = open, TA = TJ = -40°C
to +125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to GND, unless otherwise noted.)
3
3.1
3.2
3.3
3.4
3.5
3.6
0
500
1000
1500
2000
2500
LOAD CURRENT (mA)
3.3V OUTPUT, PFM MODE,
FIGURE 4 CIRCUIT,
LOAD AND LINE REGULATION
VIN = 36V
VIN = 12V
VIN = 24V
TOC10
FIGURE 4b C RCUIT,
I
0
200
400
600
800
1000
1200
1400
1600
1800
2000
2200
2400
0 20 40 60 80 100 120 140 160 180 200
RRT (kΩ)
SWITCHING FREQUENCY vs. RT RESISTANCE
TOC11
SOFT-START/SHUTDOWN FROM EN/UVLO
5V OUTPUT, 2.5A LOAD CURRENT,
FIGURE 4a CIRCUIT
MAX17543 toc12
VRESET
5V/div
IOUT
1A/div
VOUT
2V/div
VEN/UVLO
2V/div
1ms/div
SOFT-START/SHUTDOWN FROM EN/UVLO
3.3V OUTPUT, 2.5A LOAD CURRENT,
FIGURE 4b CIRCUIT
MAX17543 toc13
VRESET
5V/div
IOUT
1A/div
VOUT
2V/div
VEN/UVLO
2V/div
1ms/div
SOFT-START/SHUTDOWN FROM EN/UVLO
5V OUTPUT, PFM MODE, 5mA LOAD CURRENT,
FIGURE 4a CIRCUIT
MAX17543 toc14
VRESET
5V/div
VOUT
1V/div
VEN/UVLO
2V/div
2ms/div
MODE = OPEN
SOFT-START/SHUTDOWN FROM EN/UVLO,
3.3V OUTPUT, PFM MODE, 5mA LOAD
CURRENT, FIGURE 4b CIRCUIT
MAX17543 toc15
VRESET
5V/div
VOUT
1V/div
VEN/UVLO
2V/div
2ms/div
MODE = OPEN
5V OUTPUT, PWM MODE
SOFT-START WITH 2.5V PREBIAS,
FIGURE 4a CIRCUIT
MAX17543 toc16
VRESET
5V/div
VOUT
2V/div
VEN/UVLO
2V/div
1ms/div
MODE = SGND
3.3V OUTPUT, PFM MODE
SOFT-START WITH 2.5V PREBIAS,
FIGURE 4b CIRCUIT
MAX17543 toc17
VRESET
5V/div
VOUT
1V/div
VEN/UVLO
2V/div
1ms/div
MODE = OPEN
Maxim Integrated │ 6
www.maximintegrated.com
MAX17543
4.5V–42V, 2.5A, High-Efficiency,
Synchronous Step-Down DC-DC Converter
with Internal Compensation
Typical Operating Characteristics (continued)



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