MAX1531ETJ datasheet(6/33 Pages) MAXIM

Part #	MAX1531ETJ

Description	Multiple-Output Power-Supply Controllers for LCD Monitors

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Manufacturer	MAXIM [Maxim Integrated Products]

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6 / 33 page

Multiple-Output Power-Supply

Controllers for LCD Monitors

6

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1, VIN = 12V, VEN = VSEQ = 5V, TA = -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

(VCSH - VCSL)

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, VILIM = 1.25V

170

330

mV

LINEAR REGULATOR CONTROLLERS

POSITIVE LINEAR REGULATOR (LR1)

FBL1 Regulation Voltage

VDRV1 = 5V, IDRV1 = 100µA

1.220

1.270

V

FBL1 Input Bias Current

VFBL1 = 1.5V

-50

+50

nA

POSITIVE LINEAR REGULATORS (LR2 AND LR3)

FBL_ Regulation Voltage

VDRV_ = 5V, IDRV_ = 100µA

1.220

1.270

V

FBL_ Input Bias Current

VFBL_ = 1.5V

-50

+50

nA

POSITIVE LINEAR REGULATOR (LR4)

FBL4 Regulation Voltage

VDRV4 = 5V, IDRV4 = 500µA

1.220

1.270

V

FBL4 Input Bias Current

VFBL4 = 1.5V

-50

+50

nA

NEGATIVE LINEAR REGULATOR (LR5)

FBL5 Regulation Voltage

VDRV5 = -10V, IDRV5 = 100µA

100

150

mV

FBL5 Input Bias Current

VFBL5 = 0

-50

+50

nA

DRV5 Source Current

VFBL5 = 200mV, VDRV5 = -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 VL

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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