MAX8654ETX Ver la hoja de datos (PDF) - Maxim Integrated

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MAX8654ETX

12V, 8A 1.2MHz Step-Down Regulator

Maxim Integrated 

12V, 8A 1.2MHz

Step-Down Regulator

ELECTRICAL CHARACTERISTICS (continued)

(VIN = VEN = VVP = 12V, VVDL = 5V, VVL = 3.3V, VSYNC = 0V, VFB = 0.5V, TA = -40°C to +85°C, typical values are at TA = +25°C,

unless otherwise noted.)

PARAMETER

SYNC

SYNC Capture Range

SYNC Pulse Width

SYNC Input Threshold

SYNC Input Current

SYNCOUT

SYNCOUT Frequency Range

CONDITIONS

tLO

tHI

VIL

VIH

VSYNC = 0V or 3.6V

IIL

IIH

MIN TYP MAX UNITS

0.25

1.20 MHz

100

ns

100

0.4

V

1.6

10

nA

7

µA

0.25

1.2

MHz

SYNCOUT Phase Shift from

SYNCIN or Internal Oscillator

Frequency = 1MHz

170

180

190 Degrees

SYNCOUT Output Voltage

THERMAL SHUTDOWN

Thermal-Shutdown Threshold

Thermal-Shutdown Hysteresis

POWER-GOOD

ISYNCOUT = ±1mA

VOH

VOL

When LX stops switching

VVL - 0.4

V

0.2

+165

°C

20

°C

PWRGD Threshold Voltage

VFB falling, 30mV hysteresis, VREFIN > 540mV

90

% of

REFIN

PWRGD Falling Edge Deglitch

48

PWRGD Output Voltage Low

PWRGD Leakage Current

IPWRGD = 4mA

VPWRGD = 5.5V, VFB = 0.9V

0.03 0.06

0.01

1

Note 2: All devices are production tested at TA = +25°C. Limits over the operating range are guaranteed by design.

Clock

cycles

V

µA

4 _______________________________________________________________________________________

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