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ISL91107IR の電気的特性と機能

ISL91107IRのメーカーはIntersilです、この部品の機能は「High Efficiency Buck-Boost Regulator」です。


製品の詳細 ( Datasheet PDF )

部品番号 ISL91107IR
部品説明 High Efficiency Buck-Boost Regulator
メーカ Intersil
ロゴ Intersil ロゴ 




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ISL91107IR Datasheet, ISL91107IR PDF,ピン配置, 機能
DATASHEET
High Efficiency Buck-Boost Regulator with 4.1A
Switches
ISL91107IR
The ISL91107IR 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, VOUT = 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 ISL91107IR 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 ISL91107IR 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.
The ISL91107IR is available in a 3x4 20 Ld TQFN package.
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, VOUT = 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 3mmx4mm TQFN package
Applications
• Smartphones and tablet PCs
• Wireless communication devices
• Optical modules networking equipment
VIN =
1.8V TO 5.5V
C1
22µF
ISL91107IRTNZ
PVIN
LX1
VIN
MODE
EN
LX2
VOUT
FB
SGND PGND
L1
1µH
VOUT = 3.3V
C2
2x22µF
FIGURE 1. TYPICAL ISL91107IRTNZ APPLICATION
100
95 VIN = 3.6V
90
85
80 VIN = 4.2V
75
VIN = 2.7V
VIN = 3V
70
65 VIN = 2.5V
600.001
0.01
0.1
LOAD CURRENT (A)
1.0 3.0
FIGURE 2. EFFICIENCY vs OUTPUT CURRENT (VOUT = 3.3V)
March 2, 2015
FN8687.0
1
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 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.

1 Page





ISL91107IR pdf, ピン配列
Pin Configuration
ISL91107IR
(20 LD TQFN)
TOP VIEW
LX2 1
LX2 2
PGND 3
PGND 4
LX1 5
LX1 6
THERMAL
PAD
ISL91107IR
16 FB
15 SGND
14 MODE
13 EN
12 VIN
11 NC
Pin Descriptions
PIN # PIN NAMES
DESCRIPTION
7, 8, 9,
10
PVIN
Power input. Range: 1.8V to 5.5V. Connect 22µF
capacitor to PGND.
12 VIN Supply input. Range: 1.8V to 5.5V.
5, 6 LX1 Inductor connection, input side.
13 EN Logic input for enable. Drive HIGH to enable device,
LOW to disable. Do not leave this pin floating
3, 4 PGND Power ground for high switching current.
14 MODE Logic input, HIGH for auto PFM mode. LOW for
forced PWM operation. Do not leave this pin
floating
1, 2 LX2 Inductor connection, output side.
15 SGND Analog ground pin
17, 18,
19, 20
VOUT
Buck-boost output. Connect 2x22µF capacitor to
PGND.
16 FB Voltage feedback pin.
- EPAD Thermal pad. Connect to PGND
Ordering Information
PART NUMBER
(Notes 1, 2, 3)
PART MARKING
VOUT
(V)
TEMP RANGE
(°C)
PACKAGE
(RoHS Compliant)
PKG.
DWG. #
ISL91107IRTNZ (Note 1)
107N
3.3
-40 to +85
20 Ld TQFN
L20.3x4A
ISL91107IRTAZ (Note 1)
107A
Adj
-40 to +85
20 Ld TQFN
L20.3x4A
ISL91107IRN-EVZ
Evaluation Board for ISL91107IRTNZ for 3.3 Voltage Output
ISL91107IRA-EVZ
Evaluation Board for ISL91107IRTAZ for ADJ Voltage Output
NOTES:
1. Add “-T*” suffix for tape and reel. Please refer to TB347 for details on reel specifications.
2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte
tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-
free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
3. For Moisture Sensitivity Level (MSL), please see product information page for ISL91107IR. For more information on MSL, please see tech brief TB363.
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FN8687.0
March 2, 2015


3Pages


ISL91107IR 電子部品, 半導体
ISL91107IR
Typical Performance Curves
C1 = 22µF, C2 = 2x22µF, VOUT = 3.3V, IOUT = 0A to 2A.
80
Unless otherwise noted, operating conditions are: TA = +25°C, VIN = EN = 3.6V, L = 1µH,
18
78 16
76
74
72
70
68
66
64
62
602.0
TA = +85°C
TA = +25°C
TA = -40°C
2.5 3.0 3.5 4.0 4.5 5.0 5.5
VIN (V)
14
12
10
8
6
4
2
0
1.5
TA = +25°C
TA = +85°C
TA = -40°C
2.5 3.5 4.5
VIN (V)
5.5
FIGURE 3. QUIESCENT CURRENT vs INPUT VOLTAGE (MODE = HIGH,
VOUT = 3.3V)
FIGURE 4. QUIESCENT CURRENT vs INPUT VOLTAGE (MODE = LOW,
VOUT = 3.3V)
2.55
2.50
2.45
fSW,TA = +85°C
fSW,TA = +25°C
2.40
2.35
2.30
2.25
fSW,TA = -40°C
2.20
1.5
2.5 3.5 4.5
VIN (V)
FIGURE 5. SWITCHING FREQUENCY vs INPUT VOLTAGE
5.5
100
90
80
70 P-CHANNEL MOSFET
60
50 N-CHANNEL MOSFET
40
30
1.5 2.0 2.5
3.0 3.5
4.0 4.5
5.0
VIN (V)
FIGURE 6. MOSFET ON-RESISTANCE vs INPUT VOLTAGE
5.5
100
95 LOAD = 100mA
90
85
LOAD = 1mA
80
LOAD = 10mA
75
1.5 2.5 3.5 4.5
VIN (V)
FIGURE 7. LIGHT-LOAD EFFICIENCY vs INPUT VOLTAGE
(VOUT = 3.3V)
5.5
3.300
3.295
VIN = 3.3V
3.290
3.285
3.280
VIN = 3.8V
VIN = 4.2V
3.275
3.270
3.265
3.260
1
10 100 1000
LOAD CURRENT (mA)
FIGURE 8. OUTPUT VOLTAGE vs LOAD CURRENT
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March 2, 2015

6 Page



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部品番号部品説明メーカ
ISL91107IR

High Efficiency Buck-Boost Regulator

Intersil
Intersil


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