Datasheet > ISL6439IB

ISL6439IB

更新时间： 2024-11-30 22:13:47

品牌	Logo	应用领域
英特矽尔 - INTERSIL		开关光电二极管栅控制器
页数	文件大小	规格书
15页	378K
描述
Single Sync Buck PWM Controller for Broadband Gateway Applications

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ISL6439IB 数据手册

ISL6439

Data Sheet

July 2004

FN9057.4

Single Sync Buck PWM Controller for

Broadband Gateway Applications

Features

• Operates from 3.3V to 5V Input

The ISL6439 makes easy 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 ISL6439

integrates the control, output adjustment, monitoring and

protection functions into a single package.

• 0.8V to V Output Range

- 0.8V Internal Reference

- ±1.5% Over Load, Line Voltage and Temperature

• Drives N-Channel MOSFETs

• Simple Single-Loop Control Design

- Voltage-Mode PWM Control

The ISL6439 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.

• Fast Transient Response

- High-Bandwidth Error Amplifier

- Full 0% to 100% Duty Cycle

• Lossless, Programmable Overcurrent Protection

- Uses Upper MOSFET’s r

DS(on)

The error amplifier features a 15MHz gain-bandwidth

product and 6V/µs slew rate which enables high converter

bandwidth for fast transient performance. The resulting PWM

duty cycles range from 0% to 100%.

• Converter can Source and Sink Current

• Small Converter Size

- Internal Fixed Frequency Oscillator

ISL6439: 300kHz

ISL6439A: 600kHz

Protection from overcurrent conditions is provided by

monitoring the r

of the upper MOSFET to inhibit PWM

DS(ON)

• Internal Soft-Start

operation appropriately. This approach simplifies the

implementation and improves efficiency by eliminating the

need for a current sense resistor.

• 14 Pin SOIC or 16 Lead 5x5 QFN

• QFN Package:

- Compliant to JEDEC PUB95 MO-220 QFN - Quad Flat

No Lead - Package Outline

- Near Chip Scale Package footprint, which improves

PCB efficiency and has a thinner profile

• Pb-free available

Applications

• Cable Modems, Set Top Boxes, and DSL Modems

• DSP and Core Communications Processor Supplies

• Memory Supplies

• Personal Computer Peripherals

• Industrial Power Supplies

• 3.3V-Input DC-DC Regulators

• Low-Voltage Distributed Power Supplies

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 registered trademark of Intersil Americas Inc.

All other trademarks mentioned are the property of their respective owners.

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与ISL6439IB相关器件

型号	品牌	获取价格	描述	数据表
ISL6439IB-T	INTERSIL	获取价格	Single Sync Buck PWM Controller for Broadband Gateway Applications
ISL6439IB-T	RENESAS	获取价格	SWITCHING CONTROLLER, 340kHz SWITCHING FREQ-MAX, PDSO14, PLASTIC, MS-012-AB, SOIC-14
ISL6439IBZ	INTERSIL	获取价格	Single Sync Buck PWM Controller for Broadband Gateway Applications
ISL6439IBZ-T	INTERSIL	获取价格	Single Sync Buck PWM Controller for Broadband Gateway Applications
ISL6439IR	INTERSIL	获取价格	Single Sync Buck PWM Controller for Broadband Gateway Applications
ISL6439IR-T	INTERSIL	获取价格	Single Sync Buck PWM Controller for Broadband Gateway Applications
ISL6439IR-T	RENESAS	获取价格	SWITCHING CONTROLLER, 340kHz SWITCHING FREQ-MAX, PQCC16, 5 X 5 MM, PLASTIC, MO-220VHHB, ML
ISL6439IRZ	INTERSIL	获取价格	Single Sync Buck PWM Controller for Broadband Gateway Applications
ISL6439IRZ	RENESAS	获取价格	SWITCHING CONTROLLER, 340kHz SWITCHING FREQ-MAX, PQCC16, 5 X 5 MM, LEAD FREE, PLASTIC, MO-
ISL6439IRZ-T	INTERSIL	获取价格	Single Sync Buck PWM Controller for Broadband Gateway Applications

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