Rainbow-electronics MAX1595 Manual do Utilizador descarregar pdf (Página 2)

MAX1595

Regulated 3.3V/5.0V Step-Up/Step-Down

Charge Pump

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

= 2V for MAX1595_ _ _33, V

= 3V for MAX1595_ _ _50, C

= 1µF, C

= 0.22µF, C

OUT

= 1µF, T

= -40° to +85°C, unless otherwise

noted. Typical values are at T

= +25°C.) (Note 1)

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.

IN, OUT, AOUT to GND............................................-0.3V to +6V

SHDN to PGND ........................................................-0.3V to +6V

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

CXN to PGND.....................-0.3V to (Lower of IN + 0.8V or 6.3V)

CXP to GND ................................-0.8V to (Higher of OUT + 0.8V

or IN + 0.8V but not greater than 6V)

Continuous Output Current ...............................................150mA

Continuous Power Dissipation (T

= +70°C)

8-Pin µMAX (derate 4.5mW/°C above +70°C) ............362mW

12-Pin Thin QFN (derate 18.5mW/°C

above +70°C)............................................................1481mW

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

Input Voltage Range V

1.8 5.5 V

Input Undervoltage Lockout

Threshold

1.40 1.60 1.72 V

Input Undervoltage Lockout

Hysteresis

40 mV

= 0 to +85°C 4.85 5.05 5.15

0 < I

L OA D

< 125m A,

I N

= + 3.0V

= -40°C to +85°C 4.80 5.20

= 0 to +85°C 3.20 3.33 3.40

0 < I

LOAD

< 75mA, V

= +2.0V

= -40°C to +85°C 3.16 3.44

= 0 to +85°C 3.20 3.33 3.40

Output Voltage V

OUT

0 < I

LOAD

< 30mA, V

= +1.8V

= -40°C to +85°C 3.16 3.44

= +2.0V, MAX1595_ _ _33 220 320

No-Load Input Current I

= +3.0V, MAX1595_ _ _50 240 350

µA

Switching Frequency f

OSC

L OA D

> 20m A, V

OU T

> V

0.85 1.0 1.15 MHz

Shutdown Supply Current I

SHDN

SHDN = 0, V

= +5.5V, V

OUT

= 0 5 µA

SHDN Input Voltage Low V

IN L

= 2.0V to 5.5V 0.6 V

SHDN Input Voltage High V

IN H

= 2.0V to 5.5V 1.6 V

SHDN Input Leakage Current 0.1 µA

Note 1: Specifications to -40°C are guaranteed by design, not production tested.

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Charge Pump 1

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