Rainbow-electronics MAX1531 Uživatelský manuál stáhnout pdf (Strana 6)

MAX1530/MAX1531

Multiple-Output Power-Supply Controllers for

LCD Monitors

6 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1, V

= 12V, V

= V

SEQ

= 5V, T

= -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

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.

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