Rainbow-electronics MAX726 Uživatelský manuál stáhnout pdf

_______________General Description

The MAX724/MAX726 are monolithic, bipolar, pulse-

width modulation (PWM), switch-mode DC-DC regula-

tors optimized for step-down applications. The

MAX724 is rated at 5A, and the MAX726 at 2A. Few

external components are needed for standard opera-

tion because the power switch, oscillator, and control

circuitry are all on-chip. Employing a classic buck

topology, these regulators perform high-current step-

down functions, but can also be configured as invert-

ers, negative boost converters, or flyback converters.

These regulators have excellent dynamic and transient

response characteristics, while featuring cycle-by-cycle

current limiting to protect against overcurrent faults and

short-circuit output faults. The MAX724/MAX726 also

have a wide 8V to 40V input range in the buck step-

down configuration. In inverting and boost configura-

tions, the input can be as low as 5V.

The MAX724/MAX726 are available in a 5-pin TO-220

package. The devices have a preset 100kHz oscillator

frequency and a preset current limit of 6.5A (MAX724)

or 2.6A (MAX726).

_______________________Applications

Distributed Power from High-Voltage Buses

High-Current, High-Voltage Step-Down Applications

High-Current Inverter

Negative Boost Converter

Multiple-Output Buck Converter

Isolated DC-DC Conversion

MAX724/MAX726

5A/2A Step-Down, PWM,

Switch-Mode DC-DC Regulators

________________________________________________________________

Maxim Integrated Products

GND

CASE IS CONNECTED TO GROUND. 

STANDARD PACKAGE HAS STAGGERED LEADS.

CONTACT FACTORY FOR STRAIGHT LEADS.

5-PIN TO-220

FRONT VIEW

MAX724

MAX726

__________________Pin Configuration

220µF

GND

2.7k

0.01µF

OUTPUT

5V AT 5A

50µH

MBR745

2.21k

2.8k

470µF

INPUT

8V TO 40V

MAX724

5A STEP-DOWN CONVERTER

__________Typical Operating Circuit

Call toll free 1-800-998-8800 for free samples or literature.

19-0107; Rev 3; 9/95

___________________________Features

♦ Input Range: Up to 40V

♦ 5A On-Chip Power Switch (MAX724)

2A On-Chip Power Switch (MAX726)

♦ Adjustable Output: 2.5V to 35V

♦ 100kHz Switching Frequency

♦ Excellent Dynamic Characteristics

♦ Few External Components

♦ 8.5mA Quiescent Current

♦ TO-220 Package

______________Ordering Information

PART TEMP. RANGE PIN-PACKAGE

MAX724CCK

0°C to+70°C 5 TO-220

MAX724ECK -40°C to+85°C 5 TO-220

MAX726CCK

0°C to+70°C 5 TO-220

MAX726ECK -40°C to+85°C 5 TO-220

1 2 3 4 5 6 ... 11 12

Shrnutí obsahu

Strany 1 - Switch-Mode DC-DC Regulators

_______________General DescriptionThe MAX724/MAX726 are monolithic, bipolar, pulse-width modulation (PWM), switch-mode DC-DC regula-tors optimized for

Strany 2

MAX724/MAX7265A/2A Step-Down, PWM,Switch-Mode DC-DC Regulators10 _____________________________________________________________________________________

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___________________Typical ApplicationsPositive-to-Negative DC-DC InverterThe MAX724/MAX726 can convert positive input volt-ages to negative outputs i

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Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses arei

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8V ≤ VIN≤ 40VMAX724/MAX7265A/2A Step-Down, PWM,Switch-Mode DC-DC Regulators2 _________________________________________________________________________

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MAX724/MAX7265A/2A Step-Down, PWM,Switch-Mode DC-DC Regulators_______________________________________________________________________________________

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MAX724/MAX7265A/2A Step-Down, PWM,Switch-Mode DC-DC Regulators4 ______________________________________________________________________________________

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MAX724/MAX7265A/2A Step-Down, PWM,Switch-Mode DC-DC Regulators_______________________________________________________________________________________

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MAX724/MAX7265A/2A Step-Down, PWM,Switch-Mode DC-DC Regulators6 ______________________________________________________________________________________

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MAX724/MAX7265A/2A Step-Down, PWM,Switch-Mode DC-DC Regulators_______________________________________________________________________________________

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MAX724/MAX7265A/2A Step-Down, PWM,Switch-Mode DC-DC Regulators8 ______________________________________________________________________________________

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MAX724/MAX7265A/2A Step-Down, PWM,Switch-Mode DC-DC Regulators_______________________________________________________________________________________

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Rainbow-electronics MAX726 Uživatelský manuál

Procházejte online nebo si stáhněte Uživatelský manuál pro Senzory Rainbow-electronics MAX726. Rainbow Electronics MAX726 User Manual Uživatelská příručka

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