參數(shù)資料
型號(hào)： MAX724
廠商： Maxim Integrated Products, Inc.
英文描述： 5A/2A Step-Down, PWM, Switch-Mode DC-DC Regulators
中文描述： 5A/2A、降壓型、PWM、開關(guān)模式DC-DC穩(wěn)壓器
文件頁數(shù)： 1/12頁
文件大?。?/td> 92K
代理商： MAX724
_______________General Desc ription
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).
_______________________Applic ations
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
M
5A/2A S tep-Down, PWM,
S witc h-Mode DC-DC Regulators
________________________________________________________________ Maxim Integrated Products
Call toll free 1-800-998-8800 for free samples or literature.
1
V
IN
V
SW
GND
V
C
FB
CASE IS CONNECTED TOGROUND.
STANDARD PACKAGE HAS STAGGERED LEADS.
CONTACT FACTORY FOR STRAIGHT LEADS.
5-PIN TO-220
FRONT VIEW
MAX724
MAX726
1
2
3
4
5
__________________Pin Configuration
V
IN
V
C
V
SW
220
μ
F
GND
2.7k
0.01
μ
F
OUTPUT
5V AT 5A
FB
50
μ
H
MBR745
2.21k
2.8k
470
μ
F
INPUT
8V TO40V
MAX724
5A STEP-DOWN CONVERTER
__________Typic al Operating Circ uit
19-0107; Rev 3; 9/95
___________________________Features
o
Input Range: Up to 40V
o
5A On-Chip Power Switch (MAX724)
2A On-Chip Power Switch (MAX726)
o
Adjustable Output:
2.5V to 35V
o
100kHz Switching Frequency
o
Excellent Dynamic Characteristics
o
Few External Components
o
8.5mA Quiescent Current
o
TO-220 Package
______________Ordering Information
PART
TEMP. RANGE
0°C to+70°C
-40°C to+85°C
0°C to+70°C
-40°C to+85°C
PIN-PACKAGE
5 TO-220
5 TO-220
5 TO-220
5 TO-220
MAX724
CCK
MAX724ECK
MAX726
CCK
MAX726ECK
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