MAX17761ATC 데이터 시트보기 (PDF) - Maxim Integrated
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MAX17761ATC Datasheet PDF : 17 Pages
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MAX17761
4.5V to 76V, 1A, High-Efficiency,
Synchronous Step-Down DC-DC Converter
Typical Operating Characteristics (continued)
(VIN = 24V, VSGND = VPGND = 0V, CVIN = 2.2μF, CVCC = 1μF, VEN/UVLO = Open, CSS = 33nF, MODE/ILIM = 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.)
SOFT-START/SHUTDOWN FROM EN/UVLO,
(3.3V OUTPUT, PWM MODE, 1A LOAD CURRENT,
FIGURE 5 CIRCUIT)
toc10
SOFT-START/SHUTDOWN FROM EN/UVLO,
(5V OUTPUT, PFM MODE, 5mA LOAD CURRENT,
FIGURE 4 CIRCUIT)
toc11
SOFT-START/SHUTDOWN FROM EN/UVLO,
(3.3V OUTPUT, PFM MODE, 5mA LOAD CURRENT,
FIGURE 5 CIRCUIT)
toc12
VEN/UVLO
5V/div
VEN/UVLO
5V/div
VEN/UVLO
5V/div
VOUT
IOUT
VRESET
2ms/div
1V/div
0.5A/div
5V/div
SOFT-START WITH 2.5V PRE-BIAS,
(5V OUTPUT, PWM MODE, 5mA LOAD CURRENT,
FIGURE 4 CIRCUIT)
toc13
VEN/UVLO
5V/div
VOUT
2V/div
VRESET
2ms/div
5V/div
SOFT-START WITH 1.65V PRE-BIAS,
(3.3V OUTPUT, PWM MODE, 5mA LOAD CURRENT,
FIGURE 5 CIRCUIT)
toc14
VEN/UVLO
5V/div
VOUT
VRESET
2ms/div
1V/div
5V/div
STEADY-STATE SWITCHING WAVEFORMS
(5V OUTPUT, FIGURE 4 CIRCUIT)
toc15
VOUT
(AC)
20mV/div
VOUT
VRESET
2ms/div
2V/div
5V/div
VOUT
VRESET
2ms/div
1V/div
5V/div
STEADY-STATE SWITCHING WAVEFORMS
(5V OUTPUT, FIGURE 4 CIRCUIT)
toc16
VOUT
(AC)
10mV/div
STEADY-STATE SWITCHING WAVEFORMS
(5V OUTPUT, FIGURE 4 CIRCUIT)
toc17
VOUT
(AC)
50mV/div
VLX
10V/div
ILX
1A/div
2µs/div
CONDITIONS: 1A LOAD CURRENT
LOAD CURRENT STEPPED FROM 0.5A TO 0.75A
(5V OUTPUT, PWM MODE, FIGURE 4 CIRCUIT)
toc18
VOUT
100mV/div
(AC)
VLX
VLX
10V/div
10V/div
ILX
500mA/div
2µs/div
CONDITIONS: NO LOAD CURRENT
500mA/div
ILX
IOUT
10μs/div
CONDITIONS: PFM MODE, 25mA LOAD CURRENT
100µs/div
200mA/div
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