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MAX17575 Datasheet(PDF) 4 Page - Maxim Integrated Products

Part # MAX17575
Description  4.5V–60V, 1.5A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation
PDF  16 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX17575 Datasheet(HTML) 4 Page - Maxim Integrated Products

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Note 2: All limits are 100% tested at TA = +25°C. Limits over the operating temperature range and relevant supply voltage range
are guaranteed by design and characterization
(VIN = VEN/UVLO = 24V, RRT/SYNC = 40.2k, CVCC = 2.2µF, VPGND = VGND = EXTVCC = 0, LX = SS = RESET = OPEN, VBST to VLX
= 5V, VFB = 1V, TA = -40°C to 125°C, unless otherwise noted. Typical values are at TA = +25°C. All voltages are referenced to GND,
unless otherwise noted.) (Note 2)
MAX17575
4.5V–60V, 1.5A, High-Efficiency,
Synchronous Step-Down DC-DC Converter
with Internal Compensaton
www.maximintegrated.com
Maxim Integrated │ 4
Electrical Characteristics (continued)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
CURRENT LIMIT
Peak Current-Limit Threshold
IPEAK-LIMIT
2.1
2.45
2.8
A
Runaway Current-Limit
Threshold
IRUNAWAY-
LIMIT
2.3
2.75
3.1
A
Negative Current-Limit Threshold
1
A
RT/SYNC AND TIMINGS
Switching Frequency
fSW
RRT/SYNC = OPEN
430
490
550
kHz
RRT/SYNC = 51.1kΩ
370
400
430
RRT/SYNC = 40.2kΩ
475
500
525
RRT/SYNC = 8.06kΩ
1950
2200
2450
VFB Undervoltage Trip Level to
Cause HICCUP
VFB-HICF
0.56
0.58
0.65
V
HICCUP Timeout
32768
Cycles
Minimum On-Time
tON_MIN
60
80
ns
Minimum Off-Time
tOFF_MIN
140
150
160
ns
LX Dead Time
5
ns
SYNC Frequency Capture
Range
fSW set by RRT/SYNC
1.1 x
fSW
1.4 x
fSW
SYNC Pulse Width
50
ns
SYNC Threshold
VIH
2.1
V
VIL
0.8
RESET
RESET
Output Level Low
IRESET = 10mA
400
mV
RESET
Output Leakage Current
TA = TJ = 25°C, VRESET = 5.5V
-100
+100
nA
VOUT Threshold for RESET
Assertion
VOUT-OKF
VFB falling
90.5
92
94.6
%
VOUT Threshold for RESET
Deassertion
VOUT-OKR
VFB rising
93.8
95
97.8
%
RESET
Delay After FB Reaches
95% Regulation
1024
Cycles
THERMAL SHUTDOWN
Thermal-Shutdown Threshold
TSHDNR
Temp rising
165
°C
Thermal-Shutdown Hysteresis
TSHDNHY
10
°C



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