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ISL91106 PDF预览

ISL91106

更新时间： 2024-11-06 01:19:23
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瑞萨 - RENESAS /
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2页 206K
描述
High Efficiency High Current Buck-Boost Regulator with Bypass Mode

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ISL91106 数据手册

 浏览型号ISL91106的Datasheet PDF文件第2页 
NOT RECOMMENDED FOR NEW DESIGNS  
RECOMMENDED REPLACEMENT PART  
DATA SHORT  
ww.intersil.com/products/isl91106  
ISL91107  
ISL91106, ISL91106A  
FN8679  
Rev 2.00  
November 20, 2015  
High Efficiency High Current Buck-Boost Regulator with Bypass Mode  
The ISL91106 and ISL91106A are highly integrated buck-  
Features  
boost switching regulators that accept input voltages either  
• ISL91106 with 3.8A switches  
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.  
• ISL91106A with 4.2A switches  
• Accepts input voltages above or below regulated output  
voltage  
• Automatic and seamless transitions between buck and  
boost modes  
These devices are capable of delivering up to 2A of output  
• Input voltage range: 1.8V to 5.5V  
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.  
• Output current (PVIN = 2.8V, V  
- 2.1A (ISL91106A)  
= 3.3V):  
OUT  
- 2A (ISL91106)  
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.  
• High efficiency: up to 96%  
• 45µA quiescent current maximizes light load efficiency  
• 2.5MHz switching frequency minimizes external component  
size  
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.  
• Selectable forced PWM mode  
• Selectable bypass power saving mode  
• Fully protected for over-temperature, overcurrent and  
undervoltage  
• Small 2.15mmx1.51mm WLCSP  
Related Literature  
• AN1959, “ISL91106IIx-EVZ, ISL91106AIIx -EVZ Evaluation  
Board User Guide”  
Applications  
• Smartphones and tablet PCs  
• Wireless communication devices  
• 2G/3G/4G power amplifiers  
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)  
FN8679 Rev 2.00  
November 20, 2015  
Page 1 of 2  
12

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