AMS2596S-ADJ PDF预览

AMS2596S-ADJ

更新时间: 2025-07-15 11:45:19
品牌 Logo 应用领域
奥地利微 - AMS /
页数 文件大小 规格书
9页 417K
描述
3.3V, 5V, 12Vand adjustable versions

AMS2596S-ADJ 数据手册

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3A Step-Down Voltage Regulator  
AMS2596  
GENERAL DESCRIPTION  
FEATURES  
‹ 3.3V, 5V, 12Vand adjustable versions  
‹ Wide input voltage range, up to 40V  
‹ Internal oscillator of 150KHz fixed frequency  
‹ Guaranteed 2.5A output current  
‹ Wide adjust version output voltage range  
from 1.23V to 37V ±4% max. at over line and  
load conditions  
The AMS2596 Series are step-down switching  
regulators with all required active functions. It is  
capable of driving 2.5A load with excellent line and  
load regulations. These devices are available in  
fixed output voltages of 3.3V, 5V, 12V and an  
adjustable output version.  
The AMS2596 series offers a high-efficiency  
replacement for popular three-terminal linear  
regulators. Also it requires a minimum number of  
external components. It substantially not only  
reduces the area of board size but also the size of  
heat sink, and in some cases no heat sink is  
required. The ±4% tolerance on output voltage  
within specified input voltages and output load  
conditions is guaranteed. Also, the oscillator  
frequency accuracy is within ±15%. External  
shutdown is included. Featuring 80µA (typical)  
standby current. The output switch includes  
cycle-by-cycle current limiting, as well as thermal  
shutdown for full protection under fault conditions.  
‹ Low standby current, typ. 80µA, at shutdown  
mode  
‹ Requires only 4 external components  
‹ Thermal shutdown and current limit  
protection  
APPLICATIONS  
„
„
„
„
„
LCD Monitors.  
ADD-ON Cards Switching Regulators  
High Efficiency Step-Down Regulators  
Efficient Pre-regulator for Linear Regulators  
Positive to Negative converter (Buck-Boost)  
This series are offered in 5-pin TO-263,  
TO-220 package.  
Block Diagram  
Enable  
Vin  
DC Input  
Internal  
Regulator  
1
Enable  
5
+
4
Fixed Gain  
Error amp.  
2.5Amp.  
Driver Switch  
R2  
Feed  
Back  
Comparator  
+
-
+
-
R1  
1K  
L1  
Output  
2
3
+
Thermal  
Shutdown  
Cout  
D1  
1.23V  
Band-Gap  
Reference  
Current  
Limited  
150KHz  
Oscillator  
Reset  
1
Advanced Monolithic Systems http://www.ams-semitech.com  

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