參數(shù)資料
型號(hào)： ISL9440A
廠商： Intersil Corporation
英文描述： Triple, 180∑ Out-of-Phase, Step-Down PWM and Single Linear Controller
中文描述： 三，180Σ門診的階段，降壓型PWM和線性控制器單
文件頁(yè)數(shù)： 1/20頁(yè)
文件大?。?/td> 978K
代理商： ISL9440A
1
FN6383.1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
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Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2007. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
Triple, 180°
Out-of-Phase, Step-Down
PWM and Single Linear Controller
The ISL9440, ISL9440A and ISL9441 are quad-output
synchronous buck controllers that integrate 3 PWM
controllers and 1 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.
The ISL9440, ISL9440A and ISL9441 offer internal 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. The ISL9440
and ISL9440A offer an early warning function to output a
logic signal to warn the system to back up data when input
voltage falls below a certain level.
The ISL9440, ISL9440A and ISL9441 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.
The table below shows the difference in terms of ISL9440,
ISL9440A and ISL9441 features.
Features
Three Integrated Synchronous Buck PWM Controllers
- Internal Bootstrap Diodes
- Internal Compensation
- Internal Soft-Start
Independent Control for Each Regulator and
Programmable Output Voltages; Independent
Enable/Shutdown
Fixed Switching Frequency: 300kHz (ISL9440, ISL9441);
600kHz (ISL9440A)
Adaptive Shoot Through Protection on all Synchronous
Buck Controllers
Independently Programmable Voltage Outputs
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
- Overcurrent, Overvoltage, Undervoltage Lockout,
Over-Temperature
Cycle by Cycle Current Limiting
Wide Input Voltage Range
- Input Rail Powers VIN Pin: 5.6V to 24V
- Input Rail Powers VCC_5V Pin (VIN tied to VCC_5V, for
5V input applications): 4.5V to 5.6V
Early Warning (ISL9440, ISL9440A) on Input Voltage
Failure
Integrated Reset Function (ISL9440, ISL9440A)
Pb-free (RoHS compliant)
Applications
Satellite and Cable Set-Top Boxes
Cable Modems
VoX Gateway Devices
NAS/SAN Devices
Related Literature
Technical Brief TB389 “PCB Land Pattern Design and
Surface Mount Guidelines for QFN (MLFP) Packages”
PART
NUMBER
EARLY
WARNING
SWITCHING FREQUENCY
(kHz)
ISL9440
YES
300
ISL9440A
YES
600
ISL9441
NO
300
Data Sheet
December 5, 2007
ISL9440, ISL9440A, ISL9441
相關(guān)PDF資料
PDF描述
ISL9441 Triple, 180∑ Out-of-Phase, Step-Down PWM and Single Linear Controller
ISL95810UIRT8 Low Noise, Low Power I2C Bus, 256 Taps
ISL95810UIU8Z Single Digitally Controlled Potentiometer (XDCP)
ISL95810 Single Digitally Controlled Potentiometer (XDCP)
ISL95810WIU8Z Single Digitally Controlled Potentiometer (XDCP)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ISL9440AEVAL1Z 功能描述:EVALUATION BOARD FOR ISL9440 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)估板 - DC/DC 與 AC/DC（離線）SMPS 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:True Shutdown™ 主要目的:DC/DC，步升 輸出及類型:1，非隔離 功率 - 輸出:- 輸出電壓:- 電流 - 輸出:1A 輸入電壓:2.5 V ~ 5.5 V 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):升壓 頻率 - 開關(guān):3MHz 板類型:完全填充 已供物品:板 已用 IC / 零件:MAX8969
ISL9440AIRZ 功能描述:IC REG QD BCK/LINEAR SYNC 32-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 + 切換式 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 拓?fù)?降壓（降壓）同步（3），線性（LDO）（2） 功能:任何功能 輸出數(shù):5 頻率 - 開關(guān):300kHz 電壓/電流 - 輸出 1:控制器 電壓/電流 - 輸出 2:控制器 電壓/電流 - 輸出 3:控制器 帶 LED 驅(qū)動(dòng)器:無(wú) 帶監(jiān)控器:無(wú) 帶序列發(fā)生器:是 電源電壓:5.6 V ~ 24 V 工作溫度:-40°C ~ 85°C 安裝類型:* 封裝/外殼:* 供應(yīng)商設(shè)備封裝:* 包裝:*
ISL9440AIRZ-T 功能描述:IC REG QD BCK/LINEAR SYNC 32-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 + 切換式 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 拓?fù)?降壓（降壓）同步（2），線性（LDO）（1） 功能:任何功能 輸出數(shù):3 頻率 - 開關(guān):300kHz 電壓/電流 - 輸出 1:控制器 電壓/電流 - 輸出 2:控制器 電壓/電流 - 輸出 3:控制器 帶 LED 驅(qū)動(dòng)器:無(wú) 帶監(jiān)控器:無(wú) 帶序列發(fā)生器:是 電源電壓:4.5 V ~ 24 V 工作溫度:-40°C ~ 85°C 安裝類型:* 封裝/外殼:28-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:* 包裝:帶卷 (TR) 其它名稱:ISL6402IVZ-TTR
ISL9440BEVAL1Z 功能描述:EVAL BOARD 1 FOR ISL9440B RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)估板 - DC/DC 與 AC/DC（離線）SMPS 系列:* 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:True Shutdown™ 主要目的:DC/DC，步升 輸出及類型:1，非隔離 功率 - 輸出:- 輸出電壓:- 電流 - 輸出:1A 輸入電壓:2.5 V ~ 5.5 V 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):升壓 頻率 - 開關(guān):3MHz 板類型:完全填充 已供物品:板 已用 IC / 零件:MAX8969
ISL9440BIRZ 功能描述:IC REG QD BCK/LINEAR SYNC 32-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 + 切換式 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 拓?fù)?降壓（降壓）同步（2），線性（LDO）（1） 功能:任何功能 輸出數(shù):3 頻率 - 開關(guān):300kHz 電壓/電流 - 輸出 1:控制器 電壓/電流 - 輸出 2:控制器 電壓/電流 - 輸出 3:控制器 帶 LED 驅(qū)動(dòng)器:無(wú) 帶監(jiān)控器:無(wú) 帶序列發(fā)生器:是 電源電壓:4.5 V ~ 24 V 工作溫度:-40°C ~ 85°C 安裝類型:* 封裝/外殼:28-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:* 包裝:帶卷 (TR) 其它名稱:ISL6402IVZ-TTR
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