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ISL8088IRZ-T7

Description
SWITCHING REGULATOR
CategoryPower/power management    The power supply circuit   
File Size906KB,18 Pages
ManufacturerRenesas Electronics Corporation
Websitehttps://www.renesas.com/
Environmental Compliance
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ISL8088IRZ-T7 Overview

SWITCHING REGULATOR

ISL8088IRZ-T7 Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
MakerRenesas Electronics Corporation
package instruction,
Reach Compliance Codecompliant
ECCN codeEAR99
Analog Integrated Circuits - Other TypesSWITCHING REGULATOR
JESD-609 codee3
Humidity sensitivity level2
Terminal surfaceMatte Tin (Sn) - annealed
Base Number Matches1
Dual 800mA Low Quiescent Current 2.25MHz High
Efficiency Synchronous Buck Regulator
ISL8088
The ISL8088 is a high efficiency, dual synchronous step-down
DC/DC regulator that can deliver up to 800mA continuous output
current per channel. The supply voltage range of 2.75V to 5.5V
allows the use of a single Li+ cell, three NiMH cells or a regulated
5V input. The current mode control architecture enables very low
duty cycle operation at high frequency with fast transient
response and excellent loop stability. The ISL8088 operates at
2.25MHz switching frequency allowing the use of small, low cost
inductors and capacitors. Each channel is optimized for
generating an output voltage as low as 0.6V.
The ISL8088 has a user configurable mode of operation-forced
PWM mode and PFM/PWM mode. The forced PWM mode
operation reduces noise and RF interference while the PFM
mode operation provides high efficiency by reducing switching
losses at light loads. In PFM mode of operation, both channels
draw a total quiescent current of only 30µA hence enabling high
light load efficiency in order to maximize battery life.
The ISL8088 offers a 1ms Power-Good (PG) to monitor both
output at power-up. When shutdown, ISL8088 discharges the
outputs capacitor. Other features include internal digital soft-
start, enable for power sequence, overcurrent protection, and
thermal shutdown. The ISL8088 is offered in a 3mmx3mm 10 Ld
DFN package with 1mm maximum height. The complete
converter occupies less than 1.8cm
2
area.
Features
• Internal Current Mode Compensation
• 100% Maximum Duty Cycle for Lowest Dropout
• Selectable Forced PWM Mode and PFM Mode
• External Synchronization up to 4MHz
• Start-up with Pre-biased Output
• Soft-Stop Output Discharge During Disabled
• Internal Digital Soft-Start - 2ms
• Power-Good (PG) Output with 1ms Delay
Applications
• DC/DC POL Modules
• µC/µP, FPGA and DSP Power
• Plug-in DC/DC Modules for Routers and Switchers
• Test and Measurement Systems
• Li-ion Battery Power Devices
• Bar Code Readers
100
90
EFFICIENCY (%)
80
70
60
50
40
1.8V
OUT
-PWM
VIN = 5V
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
1.8V
OUT
-PFM
2.5V
OUT
-PWM
2.5V
OUT
-PFM
OUTPUT LOAD (A)
FIGURE 1. EFFICIENCY CHARACTERISTICS CURVE
May 26, 2011
FN6858.2
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 Inc. 2009-2011. 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

ISL8088IRZ-T7 Related Products

ISL8088IRZ-T7 ISL8088IRZ-T13
Description SWITCHING REGULATOR SWITCHING REGULATOR
Is it Rohs certified? conform to conform to
Maker Renesas Electronics Corporation Renesas Electronics Corporation
Reach Compliance Code compliant compliant
ECCN code EAR99 EAR99
Analog Integrated Circuits - Other Types SWITCHING REGULATOR SWITCHING REGULATOR
JESD-609 code e3 e3
Humidity sensitivity level 2 2
Terminal surface Matte Tin (Sn) - annealed Matte Tin (Sn) - annealed
Base Number Matches 1 1
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