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參數(shù)資料
| 型號： | ISL6420AIAZ-TK |
| 廠商： | INTERSIL CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Circular Connector; No. of Contacts:22; Series:MS27473; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:12; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:12-35 RoHS Compliant: No |
| 中文描述： | 0.05 A SWITCHING CONTROLLER, 1400 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封裝： | 0.150 INCH, GREEN, PLASTIC, QSOP-20 |
| 文件頁數(shù)： | 1/20頁 |
| 文件大?。?/td> | 560K |
| 代理商： | ISL6420AIAZ-TK |
1
FN9169.1
ISL6420A
Advanced Single Synchronous Buck
Pulse-Width Modulation (PWM) Controller
The ISL6420A simplifies the implementation of a complete
control and protection scheme for a high-performance
DC/DC buck converter. It is designed to drive N-channel
MOSFETs in a synchronous rectified buck topology, the
ISL6420A integrates control, output adjustment, monitoring
and protection functions into a single package. Additionally,
the IC features an external reference voltage tracking mode
for externally referenced buck converter applications and
DDR termination supplies, as well as a voltage margining
mode for system testing in networking DC/DC converter
applications.
The ISL6420A provides simple, single feedback loop,
voltage mode control with fast transient response. The
output voltage of the converter can be precisely regulated to
as low as 0.6V, with a maximum tolerance of ±1.0% over
temperature and line voltage variations.
The operating frequency is fully adjustable from 100kHz to
1.4MHz. High frequency operation offers cost and space
savings.
The error amplifier features a 15MHz gain-bandwidth
product and 6V/μs slew rate that enables high converter
bandwidth for fast transient response. The PWM duty cycle
ranges from 0% to 100% in transient conditions. Selecting
the capacitor value from the ENSS pin to ground sets a fully
adjustable PWM soft-start. Pulling the ENSS pin LOW
disables the controller.
The ISL6420A monitors the output voltage and generates a
PGOOD (power good) signal when soft-start sequence is
complete and the output is within regulation. A built-in
overvoltage protection circuit prevents the output voltage
from going above typically 115% of the set point. Protection
from overcurrent conditions is provided by monitoring the
r
DS(ON)
of the upper MOSFET to inhibit the PWM operation
appropriately. This approach simplifies the implementation
and improves efficiency by eliminating the need for a current
sensing resistor.
Features
Operates from 4.5V to 28V Input
Excellent Output Voltage Regulation
- 0.6V Internal Reference
- ±1.0% Reference Accuracy Over Line and Temperature
Resistor-Selectable Switching Frequency
- 100kHz to 1.4MHz
Voltage Margining and External Reference Tracking
Modes
Output Can Sink or Source Current
Lossless, Programmable Overcurrent Protection
- Uses Upper MOSFET’s r
DS(ON)
Programmable Soft-Start
Drives N-Channel MOSFETs
Simple Single-Loop Control Design
- Voltage-Mode PWM Control
Fast Transient Response
- High-Bandwidth Error Amplifier
- Full 0% to 100% Duty Cycle
Extensive Circuit Protection Functions
- PGOOD, Overvoltage, Overcurrent, Shutdown
Diode Emulation during Startup for Pre-Biased Load
Applications
Offered in 20 Ld QFN and QSOP Packages
QFN (4x4) Package
- QFN compliant to JEDEC PUB95 MO-220 QFN - Quad
Flat No Leads - Product Outline
- QFN Near Chip Scale Package Footprint; Improves
PCB Efficiency, Thinner in Profile
Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
Power Supplies for Microprocessors/ASICs
- Embedded Controllers
- DSP and Core Processors
- DDR SDRAM Bus Termination
Ethernet Routers and Switchers
High-Power DC/DC Regulators
Distributed DC/DC Power Architecture
Personal Computer Peripherals
Externally Referenced Buck Converters
Data Sheet
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.
Copyright Intersil Americas Inc. 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
October 13, 2005
相關PDF資料 |
PDF描述 |
|---|---|
| ISL6420IAZ-TK | PCB Relay; Contacts:SPDT; Contact Carry Current:500mA; Coil Voltage DC Max:9V; Relay Terminals:SMT Gullwing; Coil Resistance:405ohm; Contact Rating:10mA at 30VAC; Leaded Process Compatible:Yes; Peak Reflow Compatible (260 C):No RoHS Compliant: Yes |
| ISL6420IRZ-T | Advanced Single Synchronous Buck Pulse-Width Modulation (PWM) Controller |
| ISL6420IA-TK | Advanced Single Synchronous Buck Pulse-Width Modulation (PWM) Controller |
| ISL6420IAZ | Advanced Single Synchronous Buck Pulse-Width Modulation (PWM) Controller |
| ISL6420IRZ | Advanced Single Synchronous Buck Pulse-Width Modulation (PWM) Controller |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ISL6420AIAZ-TKS2698 | 制造商:Intersil Corporation 功能描述:PB-FREE SYNC BUCK PWM CONT. W/ 4.5V-28V INPUT,20LD QSOP, T&R - Tape and Reel |
| ISL6420AIR | 制造商:Intersil Corporation 功能描述:VOLT MODE PWM CNTRLR 0.6V TO 27.5V 700MA 20QFN - Rail/Tube |
| ISL6420AIR-TK | 功能描述:IC REG CTRLR BUCK PWM VM 20-QFN RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標準包裝:4,000 系列:- PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1.5MHz 占空比:66.7% 電源電壓:4.75 V ~ 5.25 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 85°C 封裝/外殼:40-VFQFN 裸露焊盤 包裝:帶卷 (TR) |
| ISL6420AIRZ | 功能描述:IC REG CTRLR BUCK PWM VM 20-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:275kHz 占空比:50% 電源電壓:18 V ~ 110 V 降壓:無 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:是 工作溫度:-40°C ~ 85°C 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) |
| ISL6420AIRZS2698 | 制造商:Intersil Corporation 功能描述:PB-FREE W/ANNEAL SYNC BUCK PWM CONT. WITH 4.5V-28V INPUT,20L - Rail/Tube |
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