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ISL85009FRZ-T

更新时间： 2024-11-16 01:11:31
品牌 Logo 应用领域
英特矽尔 - INTERSIL 开关
页数 文件大小 规格书
20页 686K
描述
9A, 3.8V to 18V Input, Synchronous Buck Regulator

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ISL85009FRZ-T 数据手册

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DATASHEET  
9A, 3.8V to 18V Input, Synchronous Buck Regulator  
ISL85009  
Features  
The ISL85009 is a highly efficient, monolithic, synchronous  
buck regulator that can deliver 9A of continuous output current  
from a 3.8V to 18V input supply. The device uses current mode  
control architecture with a fast transient response and  
excellent loop stability.  
• Power input voltage range variable 3.8V to 18V  
• PWM output voltage adjustable from 0.6V  
• Up to 9A output load  
• Prebias start-up, fixed 3ms soft-start  
• Selectable f  
synchronization up to 1MHz  
of 300kHz, 600kHz, and external  
The ISL85009 integrates very low ON-resistance high-side and  
low-side FETs to maximize efficiency and minimize external  
component count. The minimum BOM and easy layout  
footprint are extremely friendly to space constraint systems.  
SW  
• Peak current mode control  
- DCM/CCM  
The operation frequency of this device can be set using the  
FREQ pin: 600kHz (FREQ = float) and 300kHz (FREQ = GND).  
The device can also be synchronized to an external clock up to  
1MHz.  
- Thermally compensated current limit  
- Internal/external compensation  
• Open-drain PG window comparator  
• Output overvoltage and thermal protection  
• Input overvoltage protection  
Both high-side and low-side MOSFET current limit along with  
reverse current limit, fully protect the regulator in an  
overcurrent event. Selectable OCP schemes can fit various  
applications. Other protections, such as input/output  
overvoltage and over-temperature, are also integrated into the  
device which give required system level safety in the event of  
fault conditions.  
• Integrated boot diode with undervoltage detection  
• Selectable OCP schemes  
- Hiccup OCP  
- Latch-off  
The ISL85009 is offered in a space saving 15 Ld 3.5mmx3.5mm  
Pb-free TQFN package with great thermal performance and  
0.8mm maximum height.  
• Compact size 3.5mmx3.5mm, 15 Ld TQFN  
Applications  
• Servers and cloud infrastructure POLs  
• IPCs, factory automation, PLCs  
• Telecom and networking systems  
• Storage systems  
Related Literature  
• For a full list of related documents please visit our web page  
- ISL85009 product page  
• Test measurement  
R
2
C
1
C
VIN  
R
3
100  
90  
80  
70  
60  
50  
R
1
15  
14  
13  
12  
11  
10  
VIN EN DNC DNC COMP FB  
VIN  
9
8
L
1
PVIN  
VOUT  
4.5V TO  
18V  
PHASE  
C
IN  
7
GND  
C
OUT  
SYNC MODE FREQ PG VDD BOOT  
1
2
3
4
5
6
Vout = 5V, fsw = 600kHz  
Vout = 3.3V, fsw = 600kHz  
40  
30  
C
2.2µF  
VDD  
C
BOOT  
100nF  
0
1
2
3
4
5
6
7
8
9
OUTPUT CURRENT (A)  
FIGURE 1. TYPICAL APPLICATION SCHEMATIC FOR INTERNAL COMPENSATION  
FIGURE 2. EFFICIENCY (V = 12V)  
IN  
February 13, 2017  
FN8918.0  
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 2017. 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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