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PDF ISL91106A Data sheet ( Hoja de datos )
| Número de pieza | ISL91106A | |
| Descripción | High Efficiency High Current Buck-Boost Regulator | |
| Fabricantes | Intersil | |
| Logotipo |  |
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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
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.
These devices are capable of delivering up to 2A of output
current (PVIN = 2.8V, VOUT = 3.3V) and provide excellent
efficiency due to their fully synchronous 4-switch architecture. No
load quiescent current of only 45µA also optimizes efficiency
under light-load conditions.
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.
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.
Related Literature
• AN1959, “ISL91106IIx-EVZ, ISL91106AIIx -EVZ Evaluation
Board User Guide”
Features
• 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
• Output current (PVIN = 2.8V, VOUT = 3.3V):
- 2.1A (ISL91106A)
- 2A (ISL91106)
• High efficiency: up to 96%
• 45µA quiescent current maximizes light load efficiency
• 2.5MHz switching frequency minimizes external component
size
• Selectable forced PWM mode
• Selectable bypass power saving mode
• 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
VIN =
1.8V to 5.5V
C1
10µF
ISL91106IINZ,
ISL91106AIINZ
PVIN
LX1
VIN LX2
MODE1 VOUT
MODE2
MODE1 MODE2 MODE
0 0 Disable
0 1 Bypass
1 0 EN, PWM
1 1 EN, Auto
FB
GND PGND
L1
1µH
VOUT = 3.3V
C2
2x22µF
FIGURE 1. TYPICAL APPLICATION ISL91106IINZ, ISL91106IIQZ OR
ISL91106IIAZ, ISL91106AIIAZ
100
VIN = 3.8V
95 VIN = 4.2V
VIN = 3.3V
90
85
VIN = 2.5V
80
75
70
1
10 100
LOAD CURRENT (mA)
1000
FIGURE 2. EFFICIENCY vs OUTPUT CURRENT (VOUT = 3.3V)
November 20, 2015
FN8679.2
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 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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| Páginas | Total 2 Páginas | |
| PDF Descargar | [ Datasheet ISL91106A.PDF ] | |
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