MAX1778 查看數據表（PDF） - Maxim Integrated

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MAX1778

Quad-Output TFT LCD DC-DC Converters with Buffer

Maxim Integrated 

Quad-Output TFT LCD DC-DC

Converters with Buffer

ABSOLUTE MAXIMUM RATINGS

IN, SHDN, TGND, FLTSET to GND...........................-0.3V to +6V

DRVN to GND .........................................-0.3V to (VSUPN + 0.3V)

DRVP to GND..........................................-0.3V to (VSUPP + 0.3V)

PGND to GND.....................................................................±0.3V

RDY, SUPB to GND ................................................-0.3V to +14V

LX, SUPP, SUPN to PGND .....................................-0.3V to +14V

SUPL to GND..........................................................-0.3V to +18V

LDOOUT to GND ....................................-0.3V to (VSUPL + 0.3V)

INTG, REF, FB, FBN, FBP to GND ...............-0.3V to (VIN + 0.3V)

FBL to GND .............-0.3V to the lower of (VSUPL + 0.3V) or +6V

BUFOUT, BUF+, BUF- to GND ...............-0.3V to (VSUPB + 0.3V)

Continuous Power Dissipation (TA = +70°C)

20-Pin TSSOP (derate 10.9mW/°C above +70°C) ......879mW

24-Pin TSSOP (derate 12.2mW/°C above +70°C) ......975mW

Operating Temperature Range

MAX1778EUG, MAX1883EUP ........................-40°C to +85°C

Junction Temperature ......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

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

(VIN = +3.0V, SHDN = IN, VSUPP = VSUPN = VSUPB = VSUPL = 10V, LDOOUT = FBL, BUF- = BUFOUT, BUF+ = FLTSET = TGND =

PGND = GND, CREF = 0.22µF, CBUF = 1µF, TA = 0°C to +85°C. Typical values are at TA = +25°C, unless otherwise noted.)

PARAMETER

Input Supply Range

Input Undervoltage Threshold

IN Quiescent Supply Current

SUPP Quiescent Current

SUPN Quiescent Current

IN Shutdown Current

SUPP Shutdown Current

SUPN Shutdown Current

SUPL Shutdown Current

SUPB Shutdown Current

SYMBOL

VIN

VUVLO

IIN

ISUPP

ISUPN

CONDITIONS

VIN rising, 40mV hysteresis (typ)

VFB = VFBP

= 1.5V, VFBN

= -0.2V

MAX1778/MAX1880/

MAX1883 (fOSC = 1MHz)

MAX1881/MAX1882/

MAX1884/MAX1885

(fOSC = 500kHz)

VFBP = 1.5V

MAX1778/MAX1880

(fOSC = 1MHz)

MAX1881/MAX1882

(fOSC = 500kHz)

VFBN = -0.2V

MAX1778/MAX1880

(fOSC = 1MHz)

MAX1881/MAX1882

(fOSC = 500kHz)

VSHDN = 0, VIN = 5V

VSHDN = 0, VSUPP = 13V,

MAX1778/MAX1880/MAX1881/MAX1882

VSHDN = 0, VSUPN = 13V,

MAX1778/MAX1880/MAX1881/MAX1882

VSHDN = 0, VSUPL = 13V

MAX1778/MAX1881/MAX1883/MAX1884

VSHDN = 0, VSUPB = 13V

MIN TYP MAX UNITS

2.7

5.5

V

2.2

2.4

2.6

V

0.7

1

mA

0.6

1

0.4

0.7

mA

0.3

0.5

0.4

0.7

mA

0.3

0.5

0.1

10

µA

0.1

10

µA

0.1

10

µA

0.1

10

µA

6

13

µA

2 _______________________________________________________________________________________

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