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参数资料
| 型号： | ISL9444IRZ-T |
| 厂商： | Intersil |
| 文件页数： | 23/24页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 40-QFN |
| 标准包装： | 6,000 |
| PWM 型： | 电流模式 |
| 输出数： | 3 |
| 频率 - 最大： | 1.32MHz |
| 电源电压： | 4.5 V ~ 28 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： | -40°C ~ 85°C |
| 封装/外壳： | 40-VFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
ISL9444
Revision History
The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to web to make
sure you have the latest revision.
DATE
April 27, 2012
REVISION
FN7665.3 In “Ordering Information” on page 2, added:
CHANGE
“ISL9444CRZ, ISL9444CRZ, -0 to +85, 40 Ld 5x5 QFN, L40.5X5B” and Evaluation Board
In “Electrical Specifications”, section “REFERENCE SECTION” on page 10, added:
“FBx Accuracy” . . . . . . . . . . . . . . . . . -1.5%, min. and +=1.5% max.
In “Electrical Specifications”, Line “tOFF_MIN” on page 10”, changed:
“R FS = 169k Ω "
to:
“R T = 169k Ω "
In Equation 2 on page 16, changed:
“Frequency”
to:
“F SW ”
In Equation 3 on page 16, deleted:
First “VOUT”outside of parentheses
In “Frequency Selection” on page 17, added:
“See Equation 1 in “Pin Descriptions” on page 3 for selecting R T .”
In “Frequency Synchronization” on page 17, added:
“See Equation 1 in “Pin Descriptions” on page 2 for selecting R T . ”
In“Output Inductor Selection” on page 21, Equation 16, changed:
“fs” to:“F SW ”
In “Block Diagram” on page 5, added:
“180k Ω ” matching resistor from 0.7V VREF.
February 13, 2012
June 14, 2011
May 23, 2011
FN7665.2 Changed Input Voltage Range from “4.5V to 26V” to “4.5V to 28V” throughout datasheet.
Page 3 - Pin Description table, Pin 23/MODE/SYNC: Update 2nd sentence from “Tie this pin to ground or VCC_5V for
light load operation mode selection.” to “Tie this pin to ground or VCC_5V for DEM or CCM operation mode selection.”
FN7665.1 In “Absolute Maximum Ratings” on page 9, changed:
"PHASE1,2,3 and ISEN1, 2,3, to GND. . . . . . . . . . . -5V (<100ns, 10μJ)/-0.3V (DC) to +28V"
to:
"PHASE1,2,3 and ISEN1, 2,3, to GND. . . . . . . . . . . -5V (<100ns, 10μJ)/-0.3V (DC) to +30V"
In “Recommended Operating Conditions” on page 9, changed:
"Supply Voltage . . . . . . . . . . . . . . . . . 4.5V to 28V"
to:
"Supply Voltage . . . . . . . . . . . . . . . . . 4.5V to 26V"
In common conditions of “Electrical Specifications” table, changed "V IN = 5.0V to 28V" to "V IN = 5.0V to 26V".
Changed “Input Voltage Range” Max from 28V to 26V.
In “Input Voltage Range” on page 16, changed input supply from "4.5V to 28V" to "4.5V to 26V"
FN7665.0 Initial Release
Products
Intersil Corporation is a leader in the design and manufacture of high-performance analog semiconductors. The Company's products
address some of the industry's fastest growing markets, such as, flat panel displays, cell phones, handheld products, and notebooks.
Intersil's product families address power management and analog signal processing functions. Go to www.intersil.com/products for a
complete list of Intersil product families.
For a complete listing of Applications, Related Documentation and Related Parts, please see the respective device information page on
intersil.com: ISL9444
To report errors or suggestions for this datasheet, please go to: www.intersil.com/askourstaff
FITs are available from our website at: http://rel.intersil.com/reports/search.php
Intersil products are manufactured, assembled and tested utilizing ISO9000 quality systems as noted
in the quality certifications found at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time
without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be
accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third
parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
23
FN7665.3
May 29, 2012
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相关代理商/技术参数 |
参数描述 |
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| ISL9444IRZ-T7A | 功能描述:软开关 PWM 控制器 ISL9444 TRIPLE STEP DWN PWM CONTRLR RoHS:否 制造商:Fairchild Semiconductor 输出端数量: 输出电流: 开关频率: 工作电源电压:30 V 电源电流: 最大工作温度:+ 105 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
| ISL9444IRZ-T7AS2750 | 制造商:Intersil Corporation 功能描述:ISL9444 TRIPLE, STEP- DOWN PWM CONTROLLER IMVP-6. 40 LD MLFP - Tape and Reel |
| ISL9444IRZ-TS2750 | 制造商:Intersil Corporation 功能描述:PB FREE. ISL9444 TRIPLE, STEP- DOWN PWM CONTROLLER IMVP-6. 4 - Tape and Reel |
| ISL9491AERZ | 功能描述:线性稳压器 - 标准 SING OUTPUT LNB SUPP VAGEG FOR SATELLITE RoHS:否 制造商:STMicroelectronics 输出类型: 极性: 输出电压:1.8 V 输出电流:150 mA 负载调节: 最大输入电压:5.5 V 线路调整率: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-323-5L |
| ISL9491AERZ-T | 功能描述:线性稳压器 - 标准 SING OUTPUT LNB SUPP VAGEG FOR SATELLITE RoHS:否 制造商:STMicroelectronics 输出类型: 极性: 输出电压:1.8 V 输出电流:150 mA 负载调节: 最大输入电压:5.5 V 线路调整率: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-323-5L |
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