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參數(shù)資料
| 型號： | ISL6441IRZ-TK |
| 廠商： | INTERSIL CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 16-Bit Bus Termination Networks With Bus Hold Function 20-SOIC -40 to 85 |
| 中文描述： | DUAL SWITCHING CONTROLLER, 1550 kHz SWITCHING FREQ-MAX, PQCC28 |
| 封裝： | 5 X 5 MM, ROHS COMPLIANT, PLASTIC, MO-220, QFN-28 |
| 文件頁數(shù)： | 1/18頁 |
| 文件大?。?/td> | 382K |
| 代理商： | ISL6441IRZ-TK |
1
FN9197.1
ISL6441
1.4MHz Dual, 180°
Out-of-Phase, Step-
Down PWM and Single Linear Controller
The ISL6441 is a high-performance, triple-output controller
optimized for converting wall adapter, battery or network
intermediate bus DC input supplies into the system supply
voltages required for a wide variety of applications. Each
output is adjustable down to 0.8V. The two PWMs are
synchronized 180
o
out of phase reducing the RMS input
current and ripple voltage.
The ISL6441 incorporates several protection features. An
adjustable overcurrent protection circuit monitors the output
current by sensing the voltage drop across the lower
MOSFET. Hiccup mode overcurrent operation protects the
DC/DC components from damage during output
overload/short circuit conditions. Each PWM has an
independent logic-level shutdown input (SD1 and SD2).
A single PGOOD signal is issued when soft-start is complete
on both PWM controllers and their outputs are within 10% of
the set point and the linear regulator output is greater than
75% of its setpoint. Thermal shutdown circuitry turns off the
device if the junction temperature exceeds +150°C.
Features
Wide Input Supply Voltage Range
- 5.6V to 24V
- 4.5V to 5.6V
Three Independently Programmable Output Voltages
Switching Frequency . . . . . . . . . . . . . . . . . . . . . . .1.4MHz
Out of Phase PWM Controller Operation
- Reduces Required Input Capacitance and Power
Supply Induced Loads
No External Current Sense Resistor
- Uses Lower MOSFET’s r
DS(ON)
Bi-directional Frequency Synchronization for
Synchronizing Multiple ISL6441s
Programmable Soft-Start
Extensive Circuit Protection Functions
- PGOOD
- UVLO
- Overcurrent
- Overtemperature
- Independent Shutdown for Both PWMs
Excellent Dynamic Response
- Voltage Feed-Forward with Current Mode Control
QFN Package:
- QFN - Compliant to JEDEC PUB95 MO-220
QFN - Quad Flat No Leads - Package Outline
- Near Chip Scale Package footprint, which improves
PCB efficiency and has a thinner profile
Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
Power Supplies with Multiple Outputs
xDSL Modems/Routers
DSP, ASIC, and FPGA Power Supplies
Set-Top Boxes
Dual Output Supplies for DSP, Memory, Logic,
μ
P Core
and I/O
Telecom Systems
Ordering Information
PART
NUMBER
PART
MARKING
TEMP.
RANGE
(°C)
PACKAGE
PKG.
DWG. #
ISL6441IR
ISL6441IR
-40 to 85
28 Ld QFN
L28.5x5
ISL6441IRZ
(See Note)
ISL6441IRZ
-40 to 85
28 Ld QFN
(Pb-free)
L28.5x5
Add “-T” or “-TK” suffix to part number for tape and reel packaging.
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100%
matte tin plate termination finish, which are RoHS compliant and
compatible with both SnPb and Pb-free soldering operations. Intersil
Pb-free products are MSL classified at Pb-free peak reflow
temperatures that meet or exceed the Pb-free requirements of
IPC/JEDEC J STD-020.
Data Sheet
October 4, 2005
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. 2004, 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ISL6441IR-TK | 1.4MHz Dual, 180 Degree Out-of-Phase, Step-Down PWM and Single Linear Controller |
| ISL6441IR | 16-Bit Bus Termination Networks With Bus Hold Function 20-SOIC -40 to 85 |
| ISL6441IRZ | 1.4MHz Dual, 180 Degree Out-of-Phase, Step-Down PWM and Single Linear Controller |
| ISL6441IRZ-T | 16-Bit Bus Termination Networks With Bus Hold Function 20-SOIC -40 to 85 |
| ISL6441IR-T | 1.4MHz Dual, 180 Degree Out-of-Phase, Step-Down PWM and Single Linear Controller |
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