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ISL91110IRAZ-T7A

更新时间： 2024-09-20 00:53:59
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瑞萨 - RENESAS /
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13页 721K
描述
High Efficiency Buck-Boost Regulator with 5.4A Switches

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ISL91110IRAZ-T7A 技术参数

生命周期：Unknown零件包装代码：QFN, WLCSP
针数：20, 25Reach Compliance Code：compliant
Factory Lead Time：17 weeks风险等级：5.7
Base Number Matches：1

ISL91110IRAZ-T7A 数据手册

 浏览型号ISL91110IRAZ-T7A的Datasheet PDF文件第2页浏览型号ISL91110IRAZ-T7A的Datasheet PDF文件第3页浏览型号ISL91110IRAZ-T7A的Datasheet PDF文件第4页浏览型号ISL91110IRAZ-T7A的Datasheet PDF文件第5页浏览型号ISL91110IRAZ-T7A的Datasheet PDF文件第6页浏览型号ISL91110IRAZ-T7A的Datasheet PDF文件第7页 
DATASHEET  
ISL91110IR  
High Efficiency Buck-Boost Regulator with 5.4A Switches  
FN8709  
Rev 0.00  
April 17, 2015  
The ISL91110IR is a high-current buck-boost switching regulator  
for systems using new battery chemistries. It uses Intersil’s  
proprietary buck-boost algorithm to maintain voltage regulation  
while providing excellent efficiency and very low output voltage  
ripple when the input voltage is close to the output voltage.  
Features  
• Accepts input voltages above or below regulated output  
voltage  
• Automatic and seamless transitions between buck and  
boost modes  
The ISL91110IR is capable of delivering at least 2A continuous  
output current (V  
= 3.3V) over a battery voltage range of 2.5V  
• Input voltage range: 1.8V to 5.5V  
OUT  
to 4.35V. This maximizes the energy utilization of advanced  
single-cell Li-ion battery chemistries that have significant capacity  
left at voltages below the system voltage. Its fully synchronous  
low ON-resistance 4-switch architecture and a low quiescent  
current of only 35µA optimize efficiency under all load conditions.  
• Output current: up to 2A (PVIN = 3.4V, V  
• Output current: up to 2A (PVIN = 2.5V, V  
= 5V)  
OUT  
= 3.3V)  
OUT  
• Burst current: up to 3A (PVIN = 2.9V, V  
600µs, t = 4.6ms)  
= 3.3V, t <  
ON  
OUT  
• High efficiency: up to 95%  
The ISL91110IR supports standalone applications with a fixed  
3.3V or 3.5V output voltage or adjustable output voltage with an  
external resistor divider. Output voltages as low as 1V or as high  
as 5.2V are supported.  
• 35µA quiescent current maximizes light load efficiency  
• 2.5MHz switching frequency minimizes external component  
size  
The ISL91110IR requires only a single inductor and very few  
external components. Power supply solution size is minimized by  
its 2.5MHz switching frequency, allowing small size external  
components.  
• Fully protected for short-circuit, over-temperature and  
undervoltage  
• Small 4mmx4mm 20 Ld TQFN package  
The ISL91110IR is available in a 4mmx4mm, 20 Ld TQFN  
package.  
Applications  
• Smartphones and tablet PCs  
TABLE 1. KEY DIFFERENCES BETWEEN FAMILY OF PARTS  
• Wireless communication devices  
• Optical modules networking equipment  
PART NUMBER  
ISL91110IRNZ-T  
ADJ or FIXED V  
OUT  
3.3  
3.3  
3.5  
3.5  
ADJ  
ADJ  
ISL91110IRNZ-T7A  
ISL91110IR2AZ-T  
ISL91110IR2AZ-T7A  
ISL91110IRAZ-T  
Related Literature  
UG022, “ISL91110IRx-EVZ Evaluation Boards User Guide”  
ISL91110IRAZ-T7A  
100  
ISL91110IRNZ  
VIN  
=
V
= 4.2V  
IN  
1.8V TO 5.5V  
95  
90  
85  
80  
75  
70  
PVIN  
LX1  
LX2  
L1  
1µH  
C1  
2x10µF  
VOUT = 3.3V  
UP TO 3A  
VIN  
EN  
VOUT  
C2  
2x22µF  
V
= 3.6V  
IN  
MODE  
FB  
V
= 3.3V  
IN  
V
= 3V  
1000  
IN  
1
10  
100  
LOAD CURRENT (mA)  
FIGURE 2. EFFICIENCY: V  
OUT  
= 3.3V, T = +25°C  
A
FIGURE 1. TYPICAL APPLICATION: V  
OUT  
= 3.3V  
FN8709 Rev 0.00  
April 17, 2015  
Page 1 of 13  
1234567...13

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