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ISL8009A PDF Data sheet ( 特性 )

部品番号 ISL8009A
部品説明 1.5A Low Quiescent Current 1.6MHz High Efficiency Synchronous Buck Regulator
メーカ Intersil Corporation
ロゴ Intersil Corporation ロゴ 



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ISL8009A Datasheet, ISL8009A PDF,ピン配置, 機能
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Data Sheet
February 13, 2008
ISL8009A
FN6656.0
1.5A Low Quiescent Current 1.6MHz High
Efficiency Synchronous Buck Regulator
The ISL8009A is a high efficiency, monolithic, synchronous
step-down DC/DC regulator that can deliver up to 1.5A
continuous output current. It is optimized for generating low
output voltages down to 0.8V. The supply voltage range of
2.7V to 5.5V, allows the use of single Li+cell, three NiMH
cells or a regulated 5V input. The ISL8009A uses current
mode control architecture to deliver very low duty cycle
operation at high frequency with fast transient response and
excellent loop stability. It has flexible operation mode
selection of forced PWM mode and automatic PFM/PWM
with as low as 17µA quiescent current, achieving high power
conversion efficiency under light load condition, hence
maximizing battery life. High 1.6MHz pulse-width modulation
(PWM) switching frequency allows the use of small external
components.
The ISL8009A integrates a pair of low ON-resistance
P-Channel and N-Channel internal MOSFETs to maximize
efficiency and minimize external component count. The
100% duty-cycle operation allows less than 400mV dropout
voltage at 1.5A output current.
The ISL8009A offers a 2ms Power-On-Reset (POR) timer at
power-up. The timer output can be reset by RSI. When
shutdown, ISL8009A discharges the output capacitor
through a 100Ω resistor. Other features include internal
digital soft-start, enable for power sequence, overcurrent
protection, and thermal shutdown.
The ISL8009A is offered in a 2mmx3mm 8 Ld DFN package
with 1mm maximum height. The complete converter
occupies less than 1cm2 area.
Ordering Information
TEMP.
PART NUMBER PART RANGE
(Note)
MARKING (°C)
PACKAGE PKG.
(Pb-free) DWG. #
ISL8009AIRZ-T* 09A
-40 to +85 8 Ld 2x3 DFN L8.2x3
*Please refer to TB347 for details on reel specifications.
NOTE: 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.
Features
• High Efficiency Synchronous Buck Regulator with up to
95% Efficiency
• 2ms Reset Timer
• 2.7V to 5.5V Supply Voltage
• 3% Output Accuracy Over-Temperature/Load/Line
• 1.5A Guaranteed Output Current
• 17µA Quiescent Supply Current in PFM Mode
• Selectable Forced PWM Mode and PFM Mode
• Less Than 1µA Logic Controlled Shutdown Current
• 90% Maximum Duty Cycle for Lowest Dropout at 1.5A
• Internal Current Mode Compensation
• Internal Digital Soft-Start
• Peak Current Limiting, Short Circuit Protection
• Over-Temperature Protection
• Enable
• Soft Discharge Disable
• Small 8 Ld 2mmx3mm DFN
• Pb-Free (RoHS Compliant)
Applications
• DC/DC POL Modules
• µC/µP, FPGA and DSP Power
• Plug-in DC/DC Modules for Routers and Switchers
• Portable Instruments
• Test and Measurement Systems
Pinout
ISL8009A
(8 LD DFN)
TOP VIEW
VIN 1
EN 2
POR 3
SKIP 4
8 LX
7 GND
6 VFB
5 RSI
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2008. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.

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ISL8009A

1.5A Low Quiescent Current 1.6MHz High Efficiency Synchronous Buck Regulator

Intersil Corporation
Intersil Corporation

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