Datasheet > ISL9440BIRZ

ISL9440BIRZ

更新时间： 2024-11-24 05:39:47

品牌	Logo	应用领域
英特矽尔 - INTERSIL		软启动控制器
页数	文件大小	规格书
24页	1727K
描述
Triple Step-Down PWM and Single Linear Controller with Programmable Soft-Start

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

ISL9440BIRZ 数据手册

ISL9440B, ISL9440C

Data Sheet

June 24, 2010

FN6799.3

Triple Step-Down PWM and Single Linear

Controller with Programmable Soft-Start

Features

• Three Integrated Synchronous Buck PWM Controllers

- Internal Bootstrap Diodes

The ISL9440B and ISL9440C are quad-output synchronous

buck controllers that integrate three PWM controllers and one

low drop-out linear regulator controller, which are full featured

and designed to provide multi-rail power for use in products

such as cable and satellite set-top boxes, VoIP gateways,

cable modems, and other home connectivity products as well

as a variety of industrial and general purpose applications.

Each output is adjustable down to 0.8V. The PWMs are

synchronized at 180° out-of-phase thus, reducing the RMS

input current and ripple voltage.

- Internal Compensation

• Independent Control for each Regulator and

Programmable Output Voltages; Independent

Enable/Shutdown/Soft-start

• Fixed Switching Frequency: 300kHz(B), 600kHz(C)

• Adaptive Shoot-Through Protection on all Synchronous

Buck Controllers

The ISL9440B and ISL9440C offer programmable soft-start,

independent enable inputs for ease of supply rail

sequencing, and integrated UV/OV/OC/OT protections in a

space conscious 5mmx5mm QFN package. An early

warning function is offered to output a logic signal to warn

the system to back up data when input voltage falls below a

certain level.

• Pre-biased Output Start-up Capability

• Out-of-Phase Switching to Reduce Input Capacitance

(0°/180°/0°)

• No External Current Sense Resistor

- Uses Lower MOSFET’s r_DS(ON)

• Current Mode Controller with Voltage Feed-Forward

• Complete Protection

The ISL9440B and ISL9440C utilize internal loop

compensation to keep minimum peripheral components for

compact design and a low total solution cost. These devices

are implemented with current mode control with feed-forward

to cover various applications even with fixed internal

compensations.

- Overcurrent, Overvoltage, Undervoltage Lockout,

Over-Temperature

• Cycle-by-Cycle Current Limiting

Table 1 shows the difference in terms of ISL944xx family

features.

• Wide Input Voltage Range

- Input Rail Powers VIN Pin: 5.6V to 24V

TABLE 1.

- Input Rail Powers VCC_5V Pin (VIN tied to VCC_5V, for

5V input applications): 4.5V to 5.6V

SWITCHING

PART

NUMBER

EARLY

WARNING

FREQUENCY

(kHz)

SOFT-STARTING

TIME (ms)

• Early Warning on Input Voltage Failure

• Integrated Reset Function

ISL9440

Yes

300

600

300

600

1.7

ISL9440A

ISL9441

• Pb-Free (RoHS Compliant)

1.7

Applications

ISL9440B

ISL9440C

Yes

Programmable

• Satellite and Cable Set-Top Boxes

• Cable Modems

• VoX Gateway Devices

• NAS/SAN Devices

• ATX Power Supply

Related Literature

• Technical Brief TB389 “PCB Land Pattern Design and

Surface Mount Guidelines for QFN (MLFP) Packages”

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.

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

12 3 4 5 6 7...24

中文翻译

下载PDF

与ISL9440BIRZ相关器件

型号	品牌	获取价格	描述	数据表
ISL9440BIRZ-T	RENESAS	获取价格	Triple Step-Down PWM and Single Linear Controller with Programmable Soft-Start; QFN32; Tem
ISL9440C	INTERSIL	获取价格	Triple PWM Step-Down Synchronous Buck Controller and One LDO
ISL9440CEVAL1Z	INTERSIL	获取价格	Triple PWM Step-Down Synchronous Buck Controller and One LDO
ISL9440CIRZ	INTERSIL	获取价格	Triple Step-Down PWM and Single Linear Controller with Programmable Soft-Start
ISL9440CIRZ	RENESAS	获取价格	0.1A SWITCHING REGULATOR, 678kHz SWITCHING FREQ-MAX, PQCC32, 5 X 5 MM, ROHS COMPLIANT, PLA
ISL9440CIRZ-T	RENESAS	获取价格	0.1A SWITCHING REGULATOR, 678kHz SWITCHING FREQ-MAX, PQCC32, 5 X 5 MM, ROHS COMPLIANT, PLA
ISL9440IRZ	RENESAS	获取价格	Triple, 180Â° Out-of-Phase, Step-Down PWM and
ISL9440IRZ	INTERSIL	获取价格	Triple, 180Â° Out-of-Phase, Step-Down
ISL9440IRZ-T	INTERSIL	获取价格	Triple, 180Â° Out-of-Phase, Step-Down
ISL9440IRZ-T13	RENESAS	获取价格	SWITCHING CONTROLLER

与ISL9440BIRZ相关文章

解析光耦仿真器：升级光耦合器技术的必要性
2024-11-18

39
英伟达新一代Blackwell GPU过热问题致交付延迟
2024-11-18

31
国产厂商思特威CMOS图像传感器芯片单月出货超1亿颗，技术创新引领行业发展
2024-11-14

59
台积电5nm和3nm产能利用率达100%，半导体行业景气度持续攀升
2024-11-14

55

产品中心

服务支持

精选活动

关于我们

帮助中心

ISL9440BIRZ

ISL9440BIRZ 数据手册

与ISL9440BIRZ相关器件

与ISL9440BIRZ相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

ISL9440BIRZ

ISL9440BIRZ 数据手册

与ISL9440BIRZ相关器件

与ISL9440BIRZ相关文章

您还可以找

您在本页遇到什么问题？