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| 型号： | ISL8088IRZ-T |
| 厂商： | Intersil |
| 文件页数： | 1/18页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 0.8A 10DFN |
| 标准包装： | 6,000 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 2 |
| 输出电压： | 0.6 V ~ 5.5 V |
| 输入电压： | 2.75 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 2.25MHz |
| 电流 - 输出： | 800mA |
| 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： | 10-VFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 10-DFN（3x3） |
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.
100
90
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
80
70
1.8V OUT -PFM
2.5V OUT -PFM
2.5V OUT -PWM
60
50
1.8V OUT -PWM
VIN = 5V
40
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
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
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL8088IRZ-T7A | 功能描述:直流/直流开关转换器 DUAL 2.25MHZ 800MA SYNC REG - 3X3 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| ISL8101 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Two-Phase Multiphase Buck PWM Controller with Integrated MOSFET Drivers |
| ISL8101CRZ | 功能描述:电压模式 PWM 控制器 W/ANNEAL P6 TWO PHS W/INT DRVRS GEN PURP RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| ISL8101CRZ-T | 功能描述:电压模式 PWM 控制器 W/ANNEAL P6 TWO PHS W/INT DRVRS GEN PURP RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| ISL8101EVAL1 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Two-Phase Multiphase Buck PWM Controller with Integrated MOSFET Drivers |
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