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ISL91107IRTAZ

Description
Switching RegulatorHigh Efficiency Buck/BoostRegulator with 4.25A Switches in a
Categorysemiconductor    Power management IC    Voltage regulator and the voltage controller    Switching voltage stabilizer   
File Size917KB,15 Pages
ManufacturerRenesas Electronics Corporation
Websitehttps://www.renesas.com/
Environmental Compliance
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ISL91107IRTAZ Overview

Switching RegulatorHigh Efficiency Buck/BoostRegulator with 4.25A Switches in a

ISL91107IRTAZ Parametric

Parameter NameAttribute value
MakerRenesas Electronics Corporation
Product Categoryswitching regulator
Installation styleSMD/SMT
Package/boxTQFN-20
The output voltage1 V to 5.2 V
Output current2 A
Number of outputs1 Output
Maximum input voltage5.5 V
TopologyBoost, Buck
Minimum input voltage1.8 V
On-off level2.5 MHz
Minimum operating temperature- 40 C
Maximum operating temperature+ 85 C
seriesISL91107
Input voltage1.8 V to 5.5 V
range of working temperature- 40 C to + 85 C
typeHigh Efficiency Buck-Boost Regulator
width3 mm
closureShutdown
development kitISL91107IRA-EVZ
load regulation0.005 mV/mA
Working power current45 uA
Factory packaging quantity75
Supply voltage - min.1.8 V
unit weight32.500 mg
DATASHEET
ISL91107
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.
This device is capable of delivering up to 2A of output current
(PVIN = 2.8V, V
OUT
= 3.3V) and provides excellent efficiency
due to its fully synchronous 4-switch architecture. No-load
quiescent current of only 45µA also optimizes efficiency under
light-load conditions.
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.
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.
FN8584
Rev 3.00
May 3, 2018
Features
• 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
• Output current: up to 2A (PVIN = 2.8V, V
OUT
= 3.3V)
• High efficiency: up to 96%
• 45µA quiescent current maximizes light-load efficiency
• 2.5MHz switching frequency minimizes external component
size
• Selectable forced PWM mode
• Fully protected for short-circuit, over-temperature and
undervoltage
• 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
IN
=
1.8V TO 5.5V
C
1
22µF
ISL91107IIAZ
95
V
IN
= 3.8V
V
IN
= 4.2V
V
IN
= 3.3V
PVIN
LX1
EFFICIENCY (%)
L
1
1µH
VIN
MODE
EN
FB
R
2
60.4k
GND
PGND
LX2
VOUT
R
1
187k
C
4
22pF
C
2
2x22µF
V
OUT
= 3.3V
90
85
80
75
70
V
IN
= 2.5V
1
10
100
LOAD CURRENT (mA)
1000
FIGURE 1. TYPICAL APPLICATION
FIGURE 2. EFFICIENCY vs OUTPUT CURRENT (V
OUT
= 3.3V)
FN8584 Rev 3.00
May 3, 2018
Page 1 of 14
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