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
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