参数资料
型号: ISL8009EVAL1Z
厂商: Intersil
文件页数: 1/13页
文件大小: 0K
描述: EVALUATION BOARD FOR ISL8009
标准包装: 1
主要目的: DC/DC,步降
输出及类型: 1,非隔离
输出电压: 1.8V
电流 - 输出: 1.5A
输入电压: 2.7 ~ 5.5 V
稳压器拓扑结构: 降压
频率 - 开关: 1.6MHz
板类型: 完全填充
已供物品:
已用 IC / 零件: ISL8009
1.5A Low Quiescent Current 1.6MHz High Efficiency
Synchronous Buck Regulator
ISL8009A
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 for 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 100 Ω
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 1cm 2 area.
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
Pin Configuration
ISL8009A
(8 LD DFN)
TOP VIEW
VIN
EN
POR
SKIP
1
2
3
4
8 LX
7 GND
6 VFB
5 RSI
*EXPOSED PAD MUST BE CONNECTED
TO THE GND PIN*
February 28, 2013
FN6656.3
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 2008, 2009, 2013. 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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