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ISL80083

更新时间： 2024-01-31 03:27:12
品牌 Logo 应用领域
英特矽尔 - INTERSIL /
页数 文件大小 规格书
21页 1051K
描述
2.5MHz Integrated Power Management IC with I2C Compatible Interface

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ISL80083 数据手册

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2
2.5MHz Integrated Power Management IC with I C  
Compatible Interface  
ISL80083  
Features  
ISL80083 is an integrated mini Power Management IC  
(mini-PMIC) for powering low-voltage microprocessor, or  
applications using a single Li-Ion or Li-Polymer cell battery to  
power multiple voltage rails. ISL80083 integrates a  
high-efficiency 2.5MHz synchronous step-down converter, a  
low-input low-dropout linear regulator, 33MHz oscillator, level  
shift, and input supply select.  
• 800mA synchronous step-down converter and 300mA,  
general-purpose LDO  
2
• 400kb/s I C-bus series interface transfers the control data  
between the host controller and the ISL80083  
2
• Fixed SMPS output voltage I C programmability  
- At 25mV/step. . . . . . . . . . . . . . . . . . . . . . 0.625V to 2.225V  
2
• LDO output voltage I C programmability  
The 2.5MHz PWM switching frequency allows for the use of  
very small external inductors and capacitors. The step-down  
converter can enter skip mode under light load conditions to  
further improve the efficiency and maximize the battery life.  
For noise sensitive applications, it can also be programmed  
- At 50mV/step. . . . . . . . . . . . . . . . . . . . . . . . . . . 0.9V to 3.6V  
• 33MHz oscillator  
• Level shift from 1.8V to 3V with enable  
• Input select  
2
through I C interface to operate in forced PWM mode,  
2
regardless of the load current condition. The I C interface  
2
• Switcher I C programmable skip mode under light load or  
forced fixed switching frequency PWM mode  
supports on-the-fly control of the output voltage from 0.625V  
to 2.225V at 25mV/step size for dynamic power saving. The  
step-down converter can supply up to 800mA load current.  
ISL80083 also provides a 300mA low dropout (LDO) regulator.  
The input voltage range is from 2.6V to 5.5V allowing it to be  
powered from one of the on-chip step-down converters or directly  
from the battery. The default LDO output comes with factory  
pre-set fixed output voltage options between 0.9V to 3.6V.  
Applications  
• Power cable  
ISL80083 is available in a 2.11mm x 2.13mm 25 Ball CSP  
package.  
100  
90  
80  
70  
60  
50  
40  
1V - PFM  
0.0  
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. EFFICIENCY vs LOAD (3.3V , T +25°C)  
IN A =  
May 15, 2013  
FN7886.1  
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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