参数资料
| 型号： | ISL6431CB-T |
| 厂商： | Intersil |
| 文件页数： | 1/10页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM VM 8-SOIC |
| 标准包装： | 2,500 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 340kHz |
| 占空比： | 100% |
| 电源电压： | 4.5 V ~ 5.5 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | 0°C ~ 70°C |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
ISL6431
TM
Data Sheet
June 2001
File Number
9018
Advanced Pulse-Width Modulation (PWM)
Controller for Home Gateways
The ISL6431 is a high efficiency, fixed frequency,
synchronous buck PWM controller. It is designed for use in
applications that convert 5V to lower distributed voltages
required for set-top box, cable modem, DSL modem and
residential home gateway core processor, memory and
peripheral power supplies.
This device makes simple work out of implementing a
complete control and protection scheme for a DC-DC
stepdown converter. Designed to drive N-channel MOSFETs
in a synchronous buck topology, the ISL6431 integrates the
control, output adjustment, monitoring and protection
functions into a single 8-pin package.
The ISL6431 provides simple, single feedback loop, voltage-
mode control with fast transient response. The output
voltage can be precisely regulated to as low as 0.8V, with a
maximum tolerance of ±1.5% over temperature and line
voltage variations. A fixed frequency oscillator reduces
design complexity, while balancing typical application cost
and efficiency.
The error amplifier features a 15MHz gain-bandwidth
product and 6V/ μ s slew rate which enables high converter
bandwidth for fast transient performance. The resulting
PWM duty cycles range from 0% to 100%.
Protection from overcurrent conditions is provided by
monitoring the r DS(ON) of the upper MOSFET to inhibit PWM
operation appropriately. This approach simplifies the
implementation and improves efficiency by eliminating the
need for a current sense resistor.
Ordering Information
Features
? Operates from +5V Input
? 0.8V to V IN Output Range
- 0.8V Internal Reference
- ±1.5% Over Line Voltage and Temperature
? Drives N-Channel MOSFETs
? Simple Single-Loop Control Design
- Voltage-Mode PWM Control
? Fast Transient Response
? Lossless, Programmable Overcurrent Protection
- Uses Upper MOSFET’s r DS(ON)
? Small Converter Size
- 300kHz Fixed Frequency Oscillator
- Internal Soft Start
- 8 Lead SOIC Package
? High Conversion Efficiency
? Synchronous/Standard Buck Configuration
Applications
? Cable Modems, Set Top Boxes, and DSL Modems
? DSP and Core Communications Processor Supplies
? Power Supplies for Microprocessors and Embedded
Controllers
? Memory Supplies
? Personal Computer Peripherals
? Industrial Power Supplies
? 5V-Input DC-DC Regulators
TEMP. RANGE
PKG.
? Low-Voltage Distributed Power Supplies
PART NUMBER
ISL6431CB
( o C)
0 to 70
PACKAGE
8 Ld SOIC
NO.
M8.15
Pinout
ISL6431IB
-40 to 85
8 Ld SOIC
M8.15
BOOT 1
8 PHASE
ISL6431EVAL1
Evaluation Board
UGATE 2
GND 3
LGATE 4
7 COMP/OCSET
6 FB
5 VCC
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil and Design is a trademark of Intersil Americas Inc.
Copyright ? Intersil Americas Inc. 2001, All Rights Reserved
相关PDF资料 |
PDF描述 |
|---|---|
| ISL6439CB | IC REG CTRLR BUCK PWM VM 14-SOIC |
| ISL6440IA-TK | IC REG CTRLR BUCK PWM CM 24-QSOP |
| ISL6441IR-TK | IC CTRLR PWM DUAL 1.4MHZ 28-QFN |
| ISL6443AIVZ | IC CTRLR SGL/STP DWN PWM 28TSSOP |
| ISL6443IR-TK | IC CTRLR PWM DUAL 300KHZ 28-QFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL6431IB | 制造商:Intersil Corporation 功能描述: |
| ISL6432CB | 制造商:Intersil Corporation 功能描述: |
| ISL6432CB-T | 功能描述:IC REG QD BCK/LINEAR 16-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 + 切换式 系列:- 标准包装:2,500 系列:- 拓扑:降压（降压）同步（3），线性（LDO）（2） 功能:任何功能 输出数:5 频率 - 开关:300kHz 电压/电流 - 输出 1:控制器 电压/电流 - 输出 2:控制器 电压/电流 - 输出 3:控制器 带 LED 驱动器:无 带监控器:无 带序列发生器:是 电源电压:5.6 V ~ 24 V 工作温度:-40°C ~ 85°C 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* |
| ISL6433BCB | 制造商:Intersil Corporation 功能描述: |
| ISL6434CB | 制造商:Intersil Corporation 功能描述: |
发布紧急采购，3分钟左右您将得到回复。