Datasheet > ISL6439CBZ-T

ISL6439CBZ-T

更新时间： 2024-11-30 22:28:23

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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ISL6439CBZ-T 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.

12 3 4 5 6 7...15

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ISL6439CBZ-T 替代型号

型号	品牌	替代类型	描述	数据表
ISL6439IBZ-T	INTERSIL	完全替代	Single Sync Buck PWM Controller for Broadband Gateway Applications

与ISL6439CBZ-T相关器件

型号	品牌	获取价格	描述	数据表
ISL6439CR	INTERSIL	获取价格	Single Sync Buck PWM Controller for Broadband Gateway Applications
ISL6439EVAL1	INTERSIL	获取价格	Single Sync Buck PWM Controller for Broadband Gateway Applications
ISL6439EVAL2	INTERSIL	获取价格	Single Sync Buck PWM Controller for Broadband Gateway Applications
ISL6439IB	INTERSIL	获取价格	Single Sync Buck PWM Controller for Broadband Gateway Applications
ISL6439IB	RENESAS	获取价格	SWITCHING CONTROLLER, 340kHz SWITCHING FREQ-MAX, PDSO14, PLASTIC, MS-012-AB, SOIC-14
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

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