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MAX17761 Datasheet(PDF) 4 Page - Maxim Integrated Products

Part # MAX17761
Description  4.5V to 76V, 1A, High-Efficiency, Synchronous Step-Down DC-DC Converter
PDF  17 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX17761 Datasheet(HTML) 4 Page - Maxim Integrated Products

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(VIN = 24V, VEN/UVLO = unconnected, RRT = 105kΩ (fSW = 400kHz), LX = unconnected, TA = -40°C to +125°C, unless otherwise
noted. Typical values are at TA = +25°C. All voltages are referenced to SGND, unless otherwise noted.) (Note 2)
Note 2: Electrical specifications are production tested at TA = +25°C. Specifications over the entire operating temperature range are
guaranteed by design and characterization.
MAX17761
4.5V to 76V, 1A, High-Efficiency,
Synchronous Step-Down DC-DC Converter
www.maximintegrated.com
Maxim Integrated │ 4
Electrical Characteristics (continued)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MODE
MODE PFM Threshold
Rising
1
1.22
1.44
V
Hysteresis
0.19
V
TIMINGS
Minimum On-Time
tON-MIN
45
70
110
ns
Maximum Duty Cycle
DMAX
90
93
97
%
OSCILLATOR
Switching Frequency
fSW
RRT = 210kΩ
180
200
220
kHz
RRT = 140kΩ
270
300
330
kHz
RRT = 105kΩ
360
400
440
kHz
RRT = 69.8KΩ
540
600
660
kHz
Switching Frequency Adjustable
Range
200
600
kHz
SYNC Input Frequency
1.15 ×
fSW
1.4
× fSW
kHz
SYNC Pulse Minimum Off time
40
ns
SYNC High Threshold
VSYNC-H
1
1.22
1.44
V
Hysteresis
VSYNC-HYS
0.18
V
Number of SYNC Pulses to Enable
Synchronization
1
Cycles
RESET
FB Threshold for RESET Rising
VFB-OKR
VFB rising
95
%
FB Threshold for RESET Falling
VFB-OKF
VFB falling
92
%
RESET Delay After FB Reaches
95% Regulation
2.1
ms
RESET Output Level Low
IRESET = 1mA
0.07
V
RESET Output Leakage Current
VFB = 1.063 × VFB-REG, TA = +25°C
1
µA
THERMAL SHUTDOWN
Thermal-Shutdown Threshold
Temperature rising
160
°C
Thermal-Shutdown Hysteresis
20
°C



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