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ISL9105IRZ-T PDF预览

ISL9105IRZ-T

更新时间: 2024-11-05 04:44:59
品牌 Logo 应用领域
英特矽尔 - INTERSIL 稳压器开关光电二极管
页数 文件大小 规格书
11页 580K
描述
600mA Low Quiescent Current 1.6MHz High Efficiency Synchronous Buck Regulator

ISL9105IRZ-T 数据手册

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ISL9105  
®
Data Sheet  
February 13, 2007  
FN6415.1  
600mA Low Quiescent Current 1.6MHz  
High Efficiency Synchronous Buck  
Regulator  
Features  
• High Efficiency Synchronous Buck Regulator with up to  
95% Efficiency  
ISL9105 is a 600mA, 1.6MHz step-down regulator that is  
ideal for powering low-voltage microprocessors in handheld  
devices such as PDAs and cellular phones. It is optimized  
for generating low output voltages down to 0.8V. The supply  
voltage range is from 2.7V to 5.5V allowing the use of a  
single Li+ cell, three NiMH cells or a regulated 5V input. It  
has a guaranteed minimum output current of 600mA.  
1.6MHz pulse-width modulation (PWM) switching frequency  
allows using small external components. It has flexible  
operation mode selection of forced PWM mode and low IQ  
mode with typical 25μA quiescent current for highest light  
load efficiency to maximize battery life.  
• Selectable Forced PWM Mode and SKIP Mode  
• 25μA Quiescent Supply Current in SKIP Mode  
• 2.7V to 5.5V Supply Voltage  
• 216ms POR Timer  
• 3% Output Accuracy Over Temperature/Line/Load  
• 600mA Guaranteed Output Current  
• Less Than 1μA Logic Controlled Shutdown Current  
• 100% Maximum Duty Cycle for Lowest Dropout  
• Discharge Output Capacitor when Shutdown  
• Internal Loop Compensation  
The ISL9105 includes a pair of low on-resistance P-Channel  
and N-Channel internal MOSFETs to maximize efficiency  
and minimize external component count. 100% duty-cycle  
operation allows less than 200mV dropout voltage at 600mA  
output current.  
• Internal Digital Soft-Start  
• Peak Current Limit Protection, Short Circuit Protection  
• Over-Temperature Protection  
The ISL9105 offers a typical 216ms Power-On-Reset (POR)  
timer at power-up. The timer output can be reset by RSI.  
When shutdown, ISL9105 discharges the output capacitor.  
Other features include internal digital soft-start, enable for  
power sequence, overcurrent protection, and thermal  
shutdown.  
• Enable  
• Small 8 Ld 2x3mm DFN  
• Pb-Free Plus Anneal Available (RoHS Compliant)  
The ISL9105 is offered in a 2mmx3mm 8 Ld DFN package  
with 1mm maximum height. The complete converter  
occupies less than 1cm area.  
Applications  
• Single Li-Ion Battery-Powered Equipment  
• DSP Core Power  
2
Ordering Information(to be updated)  
• PDAs and Palmtops  
TEMP.  
PART NUMBER  
(NOTE)  
PART  
MARKING  
RANGE  
(°C)  
PACKAGE  
(Pb-free)  
PKG.  
DWG. #  
Pinout  
ISL9105  
(8 LD DFN)  
TOP VIEW  
ISL9105IRZ-T  
05Z  
-40 to +85 8 Ld 2x3 DFN L8.2x3  
NOTE: Intersil Pb-free plus anneal products employ special Pb-free  
material sets; molding compounds/die attach materials and 100% matte  
tin plate termination finish, which are 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.  
VIN  
PHASE  
1
2
3
4
8
7
6
5
EN  
POR  
GND  
FB  
MODE  
RSI  
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. 2006-2007. All Rights Reserved  
1
All other trademarks mentioned are the property of their respective owners.  

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