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| MAX17544 Datasheet, PDF (7/19 Pages) Maxim Integrated Products – Synchronous Step-Down DC-DC Converter | |||
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MAX17544
4.5Vâ42V, 3.5A, High-Efficiency,
Synchronous Step-Down DC-DC Converter
With Internal Compensation
Typical Operating Characteristics (continued)
(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.)
STEADY-STATE SWITCHING WAVEFORMS,
5V OUTPUT, 3.5A LOAD CURRENT, FIGURE 4A CIRCUIT
TOC18
VOUT(AC)
20mV/div
STEADY-STATE SWITCHING WAVEFORMS,
5V OUTPUT, PWM MODE, NO LOAD, FIGURE 4A CIRCUIT
TOC19
MODE = SGND
VOUT(AC)
20mV/div
VLX
10V/div
ILX
1μs/div
2A/div
STEADY-STATE SWITCHING WAVEFORMS,
5V OUTPUT, PFM MODE, 25mA LOAD, FIGURE 4A CIRCUIT
TOC20
VOUT(AC)
100mV/div
VLX
10V/div
ILX
500mA/div
1μs/div
STEADY-STATE SWITCHING WAVEFORMS,
5V OUTPUT, DCM MODE, 25mA LOAD, FIGURE 4A CIRCUIT
TOC21
VOUT(AC)
MODE = VCC
20mV/div
VLX
10V/div
ILX
500mA/div
MODE = OPEN
10μs/div
5V OUTPUT, PWM MODE, FIGURE 4A CIRCUIT
(LOAD CURRENT STEPPED FROM 1.75A TO 3.5A)
TOC22
VOUT (AC)
100mV/div
IOUT
2A/div
40μs/div
VLX
10V/div
ILX
200mA/div
1μs/div
3.3V OUTPUT, PWM MODE, FIGURE 4B CIRCUIT
(LOAD CURRENT STEPPED FROM 1.75A TO 3.5A)
TOC23
VOUT (AC)
IOUT
100mV/div
100μs/div
2A/div
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