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ISL91106A PDF预览

ISL91106A

更新时间： 2024-09-20 01:16:35
品牌 Logo 应用领域
英特矽尔 - INTERSIL /
页数 文件大小 规格书
2页 125K
描述
High Efficiency High Current Buck-Boost Regulator with Bypass Mode

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ISL91106A 数据手册

 浏览型号ISL91106A的Datasheet PDF文件第2页 
DATASHEET  
To request the full datasheet, please visit www.intersil.com/products/isl91106  
High Efficiency High Current Buck-Boost Regulator  
with Bypass Mode  
ISL91106, ISL91106A  
Features  
The ISL91106 and ISL91106A are highly integrated buck-boost  
switching regulators that accept input voltages either above or  
below the regulated output voltage. Unlike other buck-boost  
regulators, these regulators automatically transitions between  
operating modes without significant output disturbance. The  
devices also include a selectable bypass mode for low power  
consumption in applications that have a sleep or low-power  
mode.  
• ISL91106 with 3.8A switches  
• ISL91106A with 4.2A switches  
• Accepts input voltages above or below regulated output  
voltage  
• Automatic and seamless transitions between buck and boost  
modes  
• Input voltage range: 1.8V to 5.5V  
These devices are capable of delivering up to 2A of output  
• Output current (PVIN = 2.8V, V  
- 2.1A (ISL91106A)  
= 3.3V):  
OUT  
current (PVIN = 2.8V, V  
= 3.3V) and provide excellent  
OUT  
efficiency due to their fully synchronous 4-switch architecture. No  
load quiescent current of only 45µA also optimizes efficiency  
under light-load conditions.  
- 2A (ISL91106)  
• High efficiency: up to 96%  
The ISL91106 and ISL91106A are designed for stand-alone  
applications. They support 3.3V and 3.4V fixed output voltages or  
variable output voltages with an external resistor divider. Output  
voltages as low as 1V or as high as 5.2V are supported using an  
external resistor divider.  
• 45µA quiescent current maximizes light load efficiency  
• 2.5MHz switching frequency minimizes external component  
size  
• Selectable forced PWM mode  
• Selectable bypass power saving mode  
The ISL91106 and ISL91106A require only a single inductor and  
very few external components. Power supply solution size is  
minimized by a 2.15mmx1.51mm WLCSP and a 2.5MHz  
switching frequency, which further reduces the size of external  
components.  
• Fully protected for over-temperature, overcurrent and  
undervoltage  
• Small 2.15mmx1.51mm WLCSP  
Applications  
• Smartphones and tablet PCs  
• Wireless communication devices  
• 2G/3G/4G power amplifiers  
Related Literature  
• AN1959, “ISL91106IIx-EVZ, ISL91106AIIx -EVZ Evaluation  
Board User Guide”  
ISL91106IINZ,  
ISL91106AIINZ  
VIN  
=
1.8V to 5.5V  
100  
V
= 3.3V  
PVIN  
V
= 3.8V  
IN  
LX1  
IN  
L1  
1µH  
C1  
10µF  
V
= 4.2V  
IN  
95  
90  
85  
80  
75  
70  
VOUT = 3.3V  
VIN  
LX2  
MODE1 VOUT  
MODE2  
C2  
2x22µF  
FB  
V
= 2.5V  
IN  
GND PGND  
MODE1 MODE2 MODE  
0
0
1
1
0
1
0
1
Disable  
Bypass  
EN, PWM  
EN, Auto  
1
10  
100  
LOAD CURRENT (mA)  
1000  
FIGURE 1. TYPICAL APPLICATION ISL91106IINZ, ISL91106IIQZ OR  
ISL91106IIAZ, ISL91106AIIAZ  
FIGURE 2. EFFICIENCY vs OUTPUT CURRENT (V  
OUT  
= 3.3V)  
November 20, 2015  
FN8679.2  
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 2014, 2015. 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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