Rainbow-electronics MAX1765 Manual do Utilizador descarregar pdf (Página 2)

MAX1765

800mA, Low-Noise, Step-Up DC-DC Converter

with 500mA Linear Regulator

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

OUT

= V

POUT

= V

INL

= V

ONA

= V

ONL

= 3.6V, CLK/SEL = FBL = ONB = TRACK = PGND = GND, ISET = REF (bypassed with

0.22µF), LX = open, OUTL = open (bypassed with 4.7µF), T

= 0°C to +85°C, unless otherwise noted. Typical values are at

= +25°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.

ONA, ONB, ONL, TRACK, OUT, INL to GND..............-0.3V, +6V

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

LX to GND ...............................................-0.3V to (POUT + 0.3V)

OUTL to GND ..............................................-0.3V to (INL + 0.3V)

CLK/SEL, REF, FB, FBL, ISET, POUT

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

OUTL Short Circuit .....................................................Continuous

Continuous Power Dissipation (T

= +70°C)

16-Pin QSOP (derate 8.3mW/°C above +70°C)...........667mW

16-Pin TSSOP-EP (derate 19mW/°C above +70°C) ....1500mW

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

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

DC-DC CONVERTER

Input Voltage Range (Note 1) 0.7 5.5 V

INL Voltage Range (Note 1) 2.3 5.5 V

Minimum Startup Voltage I

LOAD

< 1mA, T

= +25°C, Figure 2 0.9 1.1 V

Temperature Coefficient of

Startup Voltage

LOAD

< 1mA -2 m V /°C

FB Regulation Voltage V

CLK/SEL = OUT, 0 < I

< 0.55A 1.215 1.250 1.275 V

FB Input Leakage Current V

= 1.35V 0.01 100 nA

Output Voltage Adjust Range 2.5 5.5 V

Load Regulation CLK/SEL = OUT, 0 < I

LOAD

< 800mA -1 %

OUT Voltage in Track Mode V

OUTL

> 2.0V, INL = POUT

OUTL

+ 0.4

OUTL

+ 0.5

OUTL

+ 0.6

Frequency in Startup Mode f

OUT

= 1.5V 125 1000 kHz

Startup to Normal Mode

Transition Voltage

Rising edge only (Note 2) 2.00 2.15 2.30 V

ISET Input Leakage Current V

ISET

= 1.25V 0.01 50 nA

Supply Current in Normal Mode

(Note 3)

CLK/SEL = ONL = GND, no load 100 200 µA

= 1.5V 130 200 µA

Supply Current in Low-Noise

PWM Mode (Note 3)

C LK/S E L = OU T,

no l oad

FB = GN D ( LX sw i tchi ng ) 2.5 mA

Supply Current in Shutdown ONA = ONL = GND, ONB = OUT 1 10 µA

1 2 3 4 5 6 7 ... 18 19

Comentários a estes Manuais

Sem comentários

Rainbow-electronics MAX1765 Manual do Utilizador Página 2

Comentários a estes Manuais

Manuais e produtos relacionados com Sensores Rainbow-electronics MAX1765