ISL9440B

概要

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. 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. 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.

Three Integrated Synchronous Buck PWM Controllers
Internal Bootstrap Diodes
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
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
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 on Input Voltage Failure
Integrated Reset Function
Pb-Free (RoHS Compliant)

Satellite and Cable Set-Top Boxes
Cable Modems
VoX Gateway Devices
NAS/SAN Devices
ATX Power Supply

ドキュメント


分類	タイトル	日時
データシート	ISL9440B, ISL9440C Datasheet PDF 2.17 MB	2008年12月23日
その他資料	TB389: PCB Land Pattern Design and Surface Mount Guidelines for QFN Packages PDF 1.17 MB	2024年3月7日
製品変更通知	PCN20029A - Alternate bond wire material and assembly facility of the listed Renesas QFN packaged products PDF 326 KB	2021年5月21日
ホワイトペーパー	How Green is Your Cloud? PDF 295 KB	2018年8月9日
製品変更通知	PCN13025 - Alternate Bond Wire Material and Manufacturing Facilities for Assembly of the Listed Intersil DFN/QFN Packaged Products - Advanced Semiconductor Engineering (ASECL) - Chung-Li , Taiwan and STATS ChipPAC (SCM) - Kuala Lumpur, Mal PDF 106 KB	2013年3月12日
製品変更通知	PCN13009 - Alternate Bond Wire Material and Manufacturing Facilities for Assembly of the Listed Intersil DFN/QFN Packaged Products - Advanced Semiconductor Engineering (ASECL) - Chung-Li (ASECL), Taiwan and STATS ChipPAC (SCM) - Kuala Lump PDF 173 KB	2013年2月5日
製品変更通知	PCN10055 - Alternate Bond Wire Material for Assembly of the Listed Intersil DFN/QFN Packaged Products - STATS ChipPAC Malaysia PDF 248 KB	2010年6月30日
アプリケーションノート	AN1681: Grounding Techniques PDF 509 KB	2004年1月19日
アプリケーションノート	AN1684: Nonideality of Ground PDF 397 KB	2004年1月19日
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ISL9440AEVAL1Z Buck PWM and Single Linear Controller Eval Board

ISL9440BEVAL1Z

Evaluation

詳しくはこちら

Triple, 180° Out-of-Phase, Step-Down PWM and Single Linear Controller Evaluation Board

The ISL9440BEVAL1Z evaluation board is used to evaluate the performance of the ISL9440B quad-output synchronous buck controller.

The ISL9440B is a quad-output...

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ISL9440BEVAL1Z User Guide

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	Pkg. Type	Carrier Type	Moisture Sensitivity Level (MSL)	Price (USD) \| 1ku	ご購入 / サンプル
(2) アクティブ (0) Obsolete / NRND / LTB	QFN	Reel Tube	3	最大値参考価格は、1,000個を基準としています。また、予告なく変更される場合があります。最小値参考価格は、1,000個を基準としています。また、予告なく変更される場合があります。	サンプルを入手購入/見積
型名	Logical Operator	Logical Operator	Logical Operator		Logical Operator
ISL9440BIRZ circleアクティブ memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model サンプル入手可能今すぐ購入する	QFN	Tube	3	5.283	サンプルを入手, 購入/見積
ISL9440BIRZ-T circleアクティブ memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model	QFN	Reel	3		購入/見積

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Triple Step-Down PWM and Single Linear Controller with Programmable Soft-Start

概要

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