Rainbow Electronics MAX1585 User Manual
Page 3
MAX1584/MAX1585
5-Channel Slim DSC Power Supplies
_______________________________________________________________________________________
3
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
Step-Up Voltage Adjust Range
3.0
5.5
V
Start Delay of ONSD, ON1, ON2,
ON3 after SU in Regulation
1024
OSC
cycles
FBSU Regulation Voltage
1.231
1.25
1.269
V
FBSU to CCSU
Transconductance
FBSU = CCSU
80
135
185
µS
FBSU Input Leakage Current
FBSU = 1.25V
-100
+1
+100
nA
Idle Mode
TM
Trip Level
(Note 6)
150
mA
Current-Sense Amplifier
Transresistance
0.275
V/A
Step-Up Maximum Duty Cycle
FBSU = 1V
80
85
90
%
PVSU Leakage Current
V
LX
= 0V, PVSU = 5.5V
0.1
5
µA
LXSU Leakage Current
V
LXSU
= V
OUT
= 5.5V
0.1
5
µA
N channel
95
150
Switch On-Resistance
P channel
150
250
m
Ω
N-Channel Current Limit
2.4
2.8
3.2
A
P-Channel Turn-Off Current
20
mA
Startup Current Limit
PVSU = 1.8V (Note 5)
450
mA
Startup t
OFF
PVSU = 1.8V
700
ns
Startup Frequency
PVSU = 1.8V
200
kHz
STEP-DOWN DC-DC CONVERTER
Step-Down Output Voltage
Adjust Range
PVSD must be greater than output (Note 7)
1.25
5.00
V
FBSD Regulation Voltage
1.231
1.25
1.269
V
FBSD to CCSD
Transconductance
FBSD = CCSD
80
135
185
µS
FBSD Input Leakage Current
FBSD = 1.25V
-100
+0.1
+100
nA
Idle Mode Trip Level
(Note 6)
100
mA
Current-Sense Amplifier
Transresistance
0.5
V/A
LXSD Leakage Current
V
LXSD
= 0 to 3.6V, PVSU = 3.6V
0.1
5
µA
N channel
95
150
Switch On-Resistance
P channel
150
250
m
Ω
P-Channel Current Limit
0.65
0.8
0.95
A
N-Channel Turn-Off Current
20
mA
Soft-Start Interval
2048
OSC
cycles
SDOK Output Low Voltage
0.1mA into
SDOK
0.01
0.1
V
SDOK Leakage Current
ONSU = GND
0.01
1
µA
Idle Mode is a trademark of Maxim Integrated Products, Inc.