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ISL91107

更新时间： 2024-11-06 00:59:59
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瑞萨 - RENESAS /
页数 文件大小 规格书
14页 920K
描述
High Efficiency Buck-Boost Regulator with 3.6A Switches

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ISL91107 数据手册

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DATASHEET  
ISL91107  
FN8584  
Rev 3.00  
May 3, 2018  
High Efficiency Buck-Boost Regulator with 3.6A Switches  
The ISL91107 is a highly-integrated buck-boost switching  
regulator that accepts input voltages either above or below the  
regulated output voltage. Unlike other buck-boost regulators,  
this regulator automatically transitions between operating  
modes without significant output disturbance.  
Features  
• Accepts input voltages above or below regulated output  
voltage  
• Automatic and seamless transitions between Buck and  
Boost modes  
This device is capable of delivering up to 2A of output current  
(PVIN = 2.8V, V  
= 3.3V) and provides excellent efficiency  
• Input voltage range: 1.8V to 5.5V  
OUT  
due to its fully synchronous 4-switch architecture. No-load  
quiescent current of only 45µA also optimizes efficiency under  
light-load conditions.  
• Output current: up to 2A (PVIN = 2.8V, V  
• High efficiency: up to 96%  
= 3.3V)  
OUT  
• 45µA quiescent current maximizes light-load efficiency  
The ISL91107 is designed for standalone applications and  
supports 3.3V 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.  
• 2.5MHz switching frequency minimizes external component  
size  
• Selectable forced PWM mode  
• Fully protected for short-circuit, over-temperature and  
undervoltage  
The ISL91107 requires 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.  
• Small 2.15mmx1.51mm WLCSP  
Applications  
• Smartphones and tablet PCs  
• Wireless communication devices  
• 2G/3G/4G power amplifiers  
Related Literature  
For a full list of related documents, visit our website  
• ISL91107 product page  
100  
V
= 3.3V  
V
= 3.8V  
IN  
IN  
V
=
IN  
ISL91107IIAZ  
1.8V TO 5.5V  
V
= 4.2V  
IN  
95  
90  
85  
80  
75  
70  
PVIN  
LX1  
C
1
L
1µH  
1
22µF  
VIN  
LX2  
V
OUT  
= 3.3V  
MODE  
EN  
VOUT  
V
= 2.5V  
IN  
C
R
187k  
4
1
22pF  
C
2
FB  
2x22µF  
R
2
60.4k  
GND  
PGND  
1
10  
100  
LOAD CURRENT (mA)  
1000  
FIGURE 1. TYPICAL APPLICATION  
FIGURE 2. EFFICIENCY vs OUTPUT CURRENT (V = 3.3V)  
OUT  
FN8584 Rev 3.00  
May 3, 2018  
Page 1 of 14  
1234567...14

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