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ISL85410

更新时间： 2024-11-15 12:05:47
品牌 Logo 应用领域
英特矽尔 - INTERSIL 稳压器
页数 文件大小 规格书
21页 918K
描述
Wide VIN 1A Synchronous Buck Regulator

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ISL85410 数据手册

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Wide V 1A Synchronous Buck Regulator  
IN  
ISL85410  
The ISL85410 is a 1A Synchronous buck regulator with an  
input range of 3V to 36V. It provides an easy to use, high  
efficiency low BOM count solution for a variety of applications.  
Features  
• Wide input voltage range 3V to 36V  
• Synchronous Operation for high efficiency  
• No compensation required  
The ISL85410 integrates both high-side and low-side NMOS  
FET's and features a PFM mode for improved efficiency at light  
loads. This feature can be disabled if forced PWM mode is  
desired. The part switches at a default frequency of 500kHz  
but may also be programmed using an external resistor from  
300kHz to 2MHz. The ISL85410 has the ability to utilize  
internal or external compensation. By integrating both NMOS  
devices and providing internal configuration options, minimal  
external components are required, reducing BOM count and  
complexity of design.  
• Integrated High-side and Low-side NMOS devices  
• Selectable PFM or forced PWM mode at light loads  
• Internal fixed (500kHz) or adjustable Switching frequency  
300kHz to 2MHz  
• Continuous output current up to 1A  
• Internal or external Soft-start  
• Minimal external components required  
• Power-good and enable functions available.  
With the wide V range and reduced BOM the part provides an  
IN  
easy to implement design solution for a variety of applications  
while giving superior performance. It will provide a very robust  
design for high voltage Industrial applications as well as an  
efficient solution for battery powered applications.  
Applications  
• Industrial control  
• Medical devices  
• Portable instrumentation  
• Distributed Power supplies  
• Cloud Infrastructure  
The part is available in a small Pb free 4mmx3mm DFN plastic  
package with an operation temperature range of -40°C to  
+125°C  
Related Literature  
• See AN1905, “ISL85410EVAL1Z, ISL85410AEVAL1Z,  
ISL85418EVAL1Z Wide VIN 1A, 800mA Synchronous Buck  
Regulator”  
• See AN1908, “ISL85410DEMO1Z, ISL85418DEMO1Z Wide  
VIN 1A, 800mA Synchronous Buck Regulator”  
100  
V
= 5V  
IN  
95  
90  
85  
80  
75  
70  
65  
60  
55  
50  
V
= 12V  
IN  
12  
11  
1
2
SS  
FS  
V
= 15V  
IN  
COMP  
SYNC  
BOOT  
VIN  
R2  
R3  
CFB  
10  
9
3
4
FB  
CBOOT  
100nF  
GND  
VCC  
CVIN  
10µF  
CVCC  
1µF  
V
= 24V  
V
= 33V  
IN  
IN  
5
6
VOUT  
PHASE  
PGND  
PG  
EN  
L1  
22µH  
COUT  
10µF  
INTERNAL DEFAULT PARAMETER SELECTION  
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0  
OUTPUT LOAD (A)  
FIGURE 1. TYPICAL APPLICATION  
FIGURE 2. EFFICIENCY vs LOAD, PFM, V  
= 3.3V  
OUT  
November 22, 2013  
FN8375.2  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas LLC 2013. All Rights Reserved  
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.  
All other trademarks mentioned are the property of their respective owners.  
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