Rainbow Electronics MAX1531 User Manual
Page 6
MAX1530/MAX1531
Multiple-Output Power-Supply Controllers for
LCD Monitors
6
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(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
CONTROL AND SEQUENCE
ONL_ Input Threshold
ONL_ rising, 25mV hysteresis
1.201
1.275
V
EN Input Threshold
EN rising, 5% hysteresis
1.201
1.275
V
FAULT DETECTION
FB, FBL1, FBL2, FBL3, FBL4
Fault Trip Level
FB, FBL1, FBL2, FBL3, FBL4 falling, 25mV hysteresis
1.081
1.147
V
FBL5 Fault Trip Level
FBL5 rising, 25mV hysteresis
300
500
mV
Overcurrent Protection Threshold
(V
CSH
- V
CSL
)
270
330
mV
RESET FUNCTION
RSTIN Reset Trip Level
RSTIN falling, 25mV hysteresis
1.081
1.147
V
STEP-DOWN CONTROLLER
ERROR AMPLIFIER
FB Regulation Voltage
1.215
1.260
V
Current-Limit Threshold
(Default Mode)
PGND - LX, ILIM = VL
170
330
mV
Current-Limit Threshold
(Adjustable Mode)
PGND - LX, V
ILIM
= 1.25V
170
330
mV
LINEAR REGULATOR CONTROLLERS
POSITIVE LINEAR REGULATOR (LR1)
FBL1 Regulation Voltage
V
DRV1
= 5V, I
DRV1
= 100µA
1.220
1.270
V
FBL1 Input Bias Current
V
FBL1
= 1.5V
-50
+50
nA
POSITIVE LINEAR REGULATORS (LR2 AND LR3)
FBL_ Regulation Voltage
V
DRV
_ = 5V, I
DRV
_ = 100µA
1.220
1.270
V
FBL_ Input Bias Current
V
FBL
_ = 1.5V
-50
+50
nA
POSITIVE LINEAR REGULATOR (LR4)
FBL4 Regulation Voltage
V
DRV4
= 5V, I
DRV4
= 500µA
1.220
1.270
V
FBL4 Input Bias Current
V
FBL4
= 1.5V
-50
+50
nA
NEGATIVE LINEAR REGULATOR (LR5)
FBL5 Regulation Voltage
V
DRV5
= -10V, I
DRV5
= 100µA
100
150
mV
FBL5 Input Bias Current
V
FBL5
= 0
-50
+50
nA
DRV5 Source Current
V
FBL5
= 200mV, V
DRV5
= -10V
2
mA
Note 1: Operating supply range is guaranteed by VL line regulation test for the range of 5.5V to 28V. Between 4.5V and 5.5V, the V
L
regulator might be in dropout; however, the part continues to operate properly.
Note 2: Guaranteed by design and not production tested.
Note 3: Specifications to -40
°C are guaranteed by design and not production tested.