Rainbow Electronics MAX1531 User Manual
Page 5
MAX1530/MAX1531
Multiple-Output Power-Supply Controllers for
LCD Monitors
_______________________________________________________________________________________
5
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V
IN
= 12V, V
EN
= V
SEQ
= 5V, T
A
= 0
°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25
°C.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
FREQ = GND
1024 / f
OSC
Soft-Start Period
FREQ = VL
2048 / f
OSC
s
POSITIVE LINEAR REGULATOR (LR4)
FBL4 Regulation Voltage
V
DRV4
= 5V, I
DRV4
= 500µA
1.226
1.245
1.264
V
FBL4 Input Bias Current
V
FBL4
= 1.5V
-50
+50
nA
FBL4 Effective Load Regulation
Error (Transconductance)
V
DRV4
= 5V, I
DRV4
= 500µA to 10mA
-1.5
-2
%
FBL4 Line Regulation Error
I
DRV4
= 500µA, 5.5V < V
IN
< 28V
5
mV
DRV4 Sink Current
V
FBL4
= 1.175V, V
DRV4
= 5V
10
28
mA
DRV4_Off-Leakage Current
V
FBL4
= 1.5V, V
DRV4
= 28V
0.1
10
µA
FBL4 Input Common-Mode
Range
(Note 2)
-0.1
+1.5
V
Soft-Start Step Size
Measured at FBL4
1.238 / 32
V
FREQ = GND
1024 / f
OSC
Soft-Start Period
FREQ = VL
2048 / f
OSC
s
NEGATIVE LINEAR REGULATOR (LR5)
FBL5 Regulation Voltage
V
DRV5
= -10V, I
DRV5
= 100µA
100
125
150
mV
FBL5 Input Bias Current
V
FBL5
= 0
-50
+50
nA
FBL5 Effective Load Regulation
Error (Transconductance)
V
DRV5
= -10V, I
DRV5
= 50µA to 1mA
-1.5
-2
%
FBL5 Line Regulation Error
I
DRV5
= 100µA, 5.5V < V
IN
< 28V
5
mV
DRV5 Source Current
V
FBL5
= 200mV, V
DRV5
= -10V
2
9
mA
DRV5 Off-Leakage Current
V
FBL5
= 0, V
DRV5
= -20V
0.1
10
µA
FBL5 Input Common-Mode
Range
(Note 2)
-0.1
+1.5
V
Soft-Start Step Size
Measured at FBL5
1.238 / 32
V
FREQ = AGND
1024 / f
OSC
Soft-Start Period
FREQ = VL
2048 / f
OSC
s
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, V
IN
= 12V, V
EN
= V
SEQ
= 5V, T
A
= -40°C to +85°C, unless otherwise noted.) (Note 3)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
GENERAL
Operating Input Voltage Range
(Note 1)
4.5
28.0
V
VL REGULATOR
VL Output Voltage
5.5V < V
IN
< 28V, 0 < I
VL
< 30mA
4.75
5.25
V
VL Undervoltage Lockout
Threshold
VL rising, 3% hysteresis
3.2
3.8
V