MAX17014 Просмотр технического описания (PDF) - Maxim Integrated

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MAX17014

Low-Cost Multiple-Output Power Supply for LCD TVs

Maxim Integrated 

Low-Cost Multiple-Output

Power Supply for LCD TVs

ABSOLUTE MAXIMUM RATINGS

VIN, IN2, OVIN, SUP, EN1, EN2, FSEL to GND ......-0.3V to +22V

GND1, OGND, CPGND to GND .........................................±0.3V

MODE, DLP, CTL, THR, DEL1, DEL2, VL to GND ...-0.3V to +7.5V

REF, FBP, FBN, FB1, FB2, COMP,

OUT to GND ...........................................-0.3V to (VVL + 0.3V)

SWI, SWO to GND ..................................................-0.3V to +22V

LX1 to GND1 ..........................................................-0.3V to +22V

SWI to SWO ............................................................-0.3V to +22V

SWI to SUI .............................................................-0.3V to +7.5V

POS1, NEG1, OUT1, POS2, NEG2,

OUT2 to OGND ...................................-0.3V to (VOVIN + 0.3V)

DRVN, DRVP to CPGND ...........................-0.3V to (VSUP + 0.3V)

LX2 to CPGND ...........................................-0.3V to (VIN2 + 0.3V)

BST to VL................................................................-0.3V to +22V

SRC to GND ...........................................................-0.3V to +48V

GON, DRN to GND ...................................-0.3V to (VSRC + 0.3V)

GON to DRN...........................................................-0.3V to +48V

POS_ to NEG_ RMS Current ...................................5mA (Note 1)

REF Short Circuit to GND ...........................................Continuous

RMS LX1 Current (total for both pins) ...................................3.2A

RMS GND1 Current (total for both pins) ...............................3.2A

RMS IN2 Current (total for both pins)....................................3.2A

RMS LX2 Current (total for both pins) ...................................3.2A

RMS CPGND Current............................................................0.8A

RMS SWI Current ..................................................................2.4A

RMS SWO Current ................................................................2.4A

RMS DRVN, DRVP Current ...................................................0.8A

RMS VL Current ..................................................................50mA

Continuous Power Dissipation (TA = +70°C)

48-Pin Thin QFN

(derate 38.5mW/°C above +70°C) .........................3076.9mW

Operating Temperature Range ...........................-40°C to +85°C

Junction Temperature ......................................................+160°C

Storage Temperature Range .............................-65°C to +165°C

Soldering Temperature (reflow) .......................................+260°C

Note 1: See Figure 6 for the op amp clamp structures.

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

ELECTRICAL CHARACTERISTICS

(Circuit of Figure 1, VIN = VIN2 = 12V, AVDD = VOVIN = VSUP = 15V, TA = 0°C to +85°C. Typical values are at TA = +25°C, unless oth-

erwise noted.)

PARAMETER

CONDITIONS

GENERAL

VIN, IN2 Input Voltage Range

VIN + IN2 Quiescent Current

Only LX2 switching (VFB1 = VFBP = 1.5V, VFBN = 0);

EN1 = EN2 = VL, VFSEL= 0

VIN + IN2 Standby Current

LX2 not switching (VFB1 = VFB2 = VFBP = 1.5V,

VFBN = 0); EN1 = EN2 = VL, VFSEL= 0

VIN + IN2 Shutdown Current

SUP + OVIN Shutdown Current

EN1 = EN2 = GND (shutdown)

EN1 = EN2 = GND (shutdown)

SMPS Operating Frequency

FSEL = VIN

FSEL = GND

Phase Difference Between Step-

Down/Positive and Step-Up/Negative

Regulators

MIN

8.0

1020

510

TYP

8

2

300

10

1200

600

180

MAX UNITS

16.5

V

mA

mA

μA

μA

1380

kHz

690

Degrees

VIN Undervoltage Lockout Threshold VIN rising edge, 100mV typical hysteresis

5.75 6.50 7.25

V

VL REGULATOR

VL Output Voltage

VL Undervoltage Lockout Threshold

IVL = 25mA, VFB1 = VFB2 = VFBP = 1.1V, VFBN =

0.4V (all regulators switching)

VL rising edge, 100mV typical hysteresis

4.9

5.0

5.1

V

3.5

3.9

4.3

V

2 _______________________________________________________________________________________

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