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G5ELM2576 PDF预览

G5ELM2576

更新时间: 2022-04-23 23:00:11
品牌 Logo 应用领域
GTM 稳压器
页数 文件大小 规格书
7页 358K
描述
Simple Switcher 3A Step-Down Voltage Regulator

G5ELM2576 数据手册

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ISSUED DATE :2005/04/15  
REVISED DATE :  
GTM  
CORPORATION  
G5ELM2576  
Simple Switcher 3A Step-Down Voltage Regulator  
Description  
The G5ELM2576 series of regulators are monolithic integrated circuits that provide all active functions for a step-down (buck) switching  
regulator, capable of driving 3A load with excellent line and load regulation. These devices are available in fixed output voltage of 3.3v, 5v,  
12v, 15v and an adjustable output version. Requiring a minimum number of external components, these regulators are simple to use and  
include internal frequency compensation and a fixed-frequency oscillator.  
The G5ELM2576 series offers a high-efficiency replacement for popular three-terminal linear regulators. It substantially reduces the size of  
the heat sink, and in some cases no heat sink is required.  
A standard series if inductors optimized for use with the G5ELM2576 are available from several different manufactures. This feature  
greatly simplifies the design of switch-mode power supplies. Other feature include a guaranteed ̈́4% to tolerance on output voltage within  
specified input voltages and output load condition, and ̈́10% on the oscillator frequency. External shutdown is included, featuring 50uA  
(typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under  
fault condition.  
Features  
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3.3V, 5.0V, 12V, 15V and adjustable output versions  
Adjustable version output voltage range , 1.23V to 37V ̈́ˇ% max over line and load conditions  
Guaranteed 3A output current  
Wide input voltage range  
Efficient pre-regulator for linear regulators  
Requires only 4 external components  
52kHz fixed frequency oscillator  
TTL shutdown capability, low power standby mode  
High efficiency  
Uses readily available standard inductors  
Thermal shutdown and current limit protection  
Applications  
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Simple high-efficiency step-down (buck) regulator  
On-card switching regulators  
Positive to negative converter (Buck-Boost)  
Package Dimensions  
Millimeter  
Millimeter  
REF.  
REF.  
Min.  
Max.  
4.80  
1.00  
0.50  
9.00  
10.4  
15.3  
Min.  
6.20  
1.25  
Max.  
6.60  
1.45  
A
b
c
D
E
L4  
4.40  
0.76  
0.36  
8.60  
9.80  
14.7  
L5  
c1  
L
e
L1  
13.25  
14.25  
1.70 REF.  
2.60  
3.71  
2.89  
3.96  
Ø
Typical Application (Fixed Output Voltage Version)  
G5ELM2576-5.0  
G5ELM2576  
Page: 1/7  

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