Rainbow Electronics MAX1585 - Manual (Page 4)

MAX1584/MAX1585
5-Channel Slim DSC Power Supplies
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V PVSU = V PV = V PVSD = V INDL2 = 3.6V, T A = 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
V
1.1V < PVSU < 1.8V (ONSU only)
V PVSU -
0.2 ON_ Input High Level
1.8V < PVSU < 5.5V 1.6
V
ON_ Impedance to GND ON_ = 3.35V 330 k Ω