Rainbow-electronics MAX8614B Manual de usuario descargar pdf (Pagina 2)

MAX8614A/MAX8614B

Dual-Output (+ and -) DC-DC

Converters for CCD

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

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.

, AV

to GND...................................................-0.3V to +6V

LXN to V

.............................................................

-18V to +0.3V

LXP to PGND ..........................................................-0.3V to +33V

REF, ONINV, ONBST, SEQ, FBN, FBP

FLT to GND ..........................................-0.3V to (AV

+ 0.3)V

PVP to GND................................................-0.3V to (V

+ 0.3)V

to V

..........................................................-0.3V to +0.3V

PGND to GND .......................................................-0.3V to +0.3V

Continuous Power Dissipation (T

= +70°C Multilayer Board)

14-Pin 3mm x 3mm TDFN (derate 18.2mW/°C above

= +70°C) ............................................................1454.4mW

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

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

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

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

ELECTRICAL CHARACTERISTICS

= V

AVCC

= V

ONINV =

ONBST

= 3.6V, PGND = SEQ = GND, C6 = 0.22µF, C1 = 2.2µF, C2 = 4.7µF, Figure 1, T

= 0°C to +85°C,

unless otherwise noted. Typical values are at T

= +25°C.)

PARAMETER CONDITIONS MIN TYP MAX UNITS

and V

Voltage Range (Note 1) 2.7 5.5 V

UVLO Threshold V

rising 2.42 2.55 2.66 V

UVLO Hysteresis 25 mV

Step-Up Output Voltage Adjust Range V

AVCC

24 V

Inverter Output Voltage Adjust Range V

INV

- V

(Note 2) -16 0 V

MAX8614B 0.7 0.8 0.9

LXP Current Limit

MAX8614A 0.34 0.44 0.52

MAX8614B 0.90 1.05 1.20

LXP Short-Circuit Current Limit

MAX8614A 0.52 0.61 0.70

MAX8614B 0.65 0.75 0.85

LXN Current Limit

MAX8614A 0.28 0.33 0.38

LXN On-Resistance V

= 3.6V 0.6 1.1 Ω

LXP On-Resistance V

= 3.6V 0.625 Ω

PVP On-Resistance V

= 3.6V 0.15 0.3 Ω

Maximum Duty Cycle Step-up and inverter 82 90 %

AVCC

0.75 1.4

Quiescent Current (Switching, No Load)

VCC

AVCC

400 800

Quiescent Current (No Switching, No Load)

815

µA

= +25°C 0.1 5

Shutdown Supply Current

= +85°C 0.1

µA

FBP Line Regulation V

= 2.7V to 5.5V -20 mV/D

FBN Line Regulation V

= 2.7V to 5.5V 20

mV/

(D - 0.5)

1 2 3 4 5 6 7 ... 14 15

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Rainbow-electronics MAX8614B Manual de usuario Pagina 2

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