Rainbow-electronics MAX1585 Manual de usuario descargar pdf (Pagina 4)

MAX1584/MAX1585

5-Channel Slim DSC Power Supplies

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

PVSU

= V

PVSD

= V

INDL2

= 3.6V, T

= 0°C to +85°C, unless otherwise noted.)

PARAMETER CONDITIONS MIN TYP MAX UNITS

AUX1, 2, 3 DC-DC CONTROLLERS

Maximum Duty Cycle FB_ = 1V 80 85 90 %

FB1 and FB3 Regulation Voltage FB_ = CC_ 1.231 1.25 1.269 V

FB2 (MAX1584) Regulation

Voltage

FB_ = CC_ 1.231 1.25 1.269 V

FB2 (MAX1585) (Inverter)

Regulation Voltage

FB_ = CC_ -0.01 0 +0.01 V

FB_ to CC_ Transconductance FB_ = CC_ 80 135 185 µS

FB_ Input Leakage Current FB_ = 1.25V -100 +1 +100 nA

DL_ Driver Resistance Output high or low 2.5 10 Ω

DL_ Drive Current Sourcing or sinking 0.5 A

Soft-Start Interval 4096

OSC

cycles

AUX1OK Output Low Voltage 0.1mA into AUX1OK 0.01 0.1 V

AUX1OK Leakage Current ONSU = GND 0.01 1 µA

OVERLOAD AND THERMAL PROTECTION

Overload-Protection Fault Delay 100,000

OSC

cycles

SCF Leakage Current ONSU = PVSU, FBSU = 1.5V 0.1 1 µA

SCF Output Low Voltage 0.1mA into SCF 0.01 0.1 V

Thermal Shutdown +160 °C

Thermal Hysteresis 20 °C

LOGIC INPUTS

1.1V < PVSU < 1.8V (ONSU only) 0.2

ON_ Input Low Level

1.8V < PVSU< 5.5V 0.4

1.1V < PVSU < 1.8V (ONSU only)

PVSU

0.2

ON_ Input High Level

1.8V < PVSU < 5.5V 1.6

ON_ Impedance to GND ON_ = 3.35V 330 kΩ

1 2 3 4 5 6 7 8 9 ... 28 29

MAX1584/MAX1585 1
Package Information 29

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Rainbow-electronics MAX1585 Manual de usuario Pagina 4

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