参数资料
| 型号： | ISL9109IRZ-T |
| 厂商： | Intersil |
| 文件页数： | 1/13页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 1.5A 8DFN |
| 标准包装： | 6,000 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.8 V ~ 5.5 V |
| 输入电压： | 2.7 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1.6MHz |
| 电流 - 输出： | 1.5A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-VFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-DFN（2x3） |
?
ISL9109
Data Sheet
September 29, 2008
FN6681.1
RF PA 1.5A DC/DC Regulator
ISL9109 is 1.6MHz synchronous step-down regulator with
integrated power switches capable of delivering 1.5A output
for powering RF Power Amplifiers in cellular phones. The
ISL9109 features a standby mode which allows for rapid
startup while prolonging battery life. 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. 1.6MHz
pulse-width modulation (PWM) switching frequency allows
using small external components. It has a flexible operation
mode selection of forced PWM mode and Skip (Low I Q )
mode with typical 22μA quiescent current for highest light
load efficiency to maximize battery life.
The ISL9109 integrates a pair of low ON-resistance
P-Channel and N-Channel MOSFETs to maximize efficiency
and minimize external component count.
When in standby, the ISL9109 band-gap reference is
powered. This assists in a rapid power-up when the EN pin
is asserted high. Other features include soft-start,
overcurrent protection, and thermal shutdown.
The ISL9109 is offered in 8 Ld 2mmx3mm DFN package
with 0.9mm typical height. The complete converter can
occupy less than 1cm 2 area.
Ordering Information
Features
? Integrated Synchronous Buck Regulator with up to 95%
Efficiency
? 2.7V to 5.5V Supply Voltage
? 1.5A Output Current
? 4.3μA Quiescent Supply Current in Standby Mode
? 22μA Quiescent Supply Current in Skip (Low I Q ) Mode
? 3% Output Accuracy Over Temperature/Load/Line
? Selectable Forced PWM Mode or Skip Mode
? Less Than 1μA Logic Controlled Shutdown Current
? 100% Maximum Duty Cycle for Lowest Dropout
? Soft-Start
? Peak Current Limiting, Short Circuit Protection
? Over-Temperature Protection
? 8 Ld 2mmx3mm DFN
? Pb-Free (RoHS Compliant)
Applications
? Single Li-Ion Battery-Powered Equipment
? RF Power Amplifier
PART
TEMP.
? CPU Power
NUMBER
(Note)
PART
MARKING
RANGE
(°C)
PACKAGE
(Pb-free)
PKG.
DWG. #
? PDAs and Palmtops
ISL9109IRZ*
109
-40 to +85 8 Ld 2x3 DFN
L8.2x3
Pinout
NOTE: These Intersil Pb-free plastic packaged products employ
special Pb-free material sets, molding compounds/die attach
ISL9109
(8 LD 2X3 DFN)
TOP VIEW
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.
VIN
EN
N/C
MODE
1
2
3
4
8
7
6
5
SW
GND
FB
STBY
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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