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參數資料
| 型號： | ISL6445 |
| 廠商： | Intersil Corporation |
| 英文描述： | 1.4MHz Dual, 180 Degree Out-of-Phase, Step-Down PWM Controller |
| 中文描述： | 1.4MHz的雙路，180 °異相，降壓型PWM控制器 |
| 文件頁數： | 1/15頁 |
| 文件大小： | 353K |
| 代理商： | ISL6445 |
1
FN9230.0
PRELIMINARY
ISL6445
1.4MHz Dual, 180°
Out-of-Phase,
Step-Down PWM Controller
The ISL6445 is a high-performance, dual-output PWM
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 ISL6445 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. Thermal shutdown circuitry turns off the device
if the junction temperature exceeds +150°C.
Pinout
ISL6445 (QSOP)
TOP VIEW
Features
Wide Input Supply Voltage Range
- 5.6V to 24V
- 4.5V to 5.6V
Two 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)
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
Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
Power Supplies with Two 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
1
2
3
4
5
6
7
8
9
10
11
12
16
17
18
19
20
21
22
23
24
15
14
13
LGATE2
BOOT2
UGATE2
PHASE2
ISEN2
PGOOD
VCC5
SD2
SS2
OCSET2
FB2
VIN
LGATE1
UGATE1
PHASE1
ISEN1
PGND
SS1
OCSET1
FB1
BIAS
BOOT1
SD1
SGND
Ordering Information
PART
NUMBER
PART
MARKING
TEMP.
RANGE (°C)
PACKAGE
PKG.
DWG. #
ISL6445IAZ*
(See Note)
ISL6445IAZ
-40 to 85
24 Ld QSOP
(Pb-free)
M24.15
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.
*Add “-TK” suffix for tape and reel.
Data Sheet
September 9, 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. 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
相關PDF資料 |
PDF描述 |
|---|---|
| ISL6445IAZ | 1.4MHz Dual, 180 Degree Out-of-Phase, Step-Down PWM Controller |
| ISL6445IAZ-TK | 1.4MHz Dual, 180 Degree Out-of-Phase, Step-Down PWM Controller |
| ISL6455 | Triple Output Regulator with Single Synchronous Buck and Dual LDO(帶單同步降壓和雙LDO的三路輸出調節器) |
| ISL6455A | Triple Output Regulator with Single Synchronous Buck and Dual LDO(帶單同步降壓和雙LDO的三路輸出調節器) |
| ISL6504CB | Multiple Linear Power Controller with ACPI Control Interface |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ISL6445EVAL3Z | 功能描述:EVALUATION BOARD FOR ISL6445 RoHS:是 類別:編程器，開發系統 >> 評估板 - DC/DC 與 AC/DC（離線）SMPS 系列:- 產品培訓模塊:Obsolescence Mitigation Program 標準包裝: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 穩壓器拓撲結構:升壓 頻率 - 開關:3MHz 板類型:完全填充 已供物品:板 已用 IC / 零件:MAX8969 |
| ISL6445IAZ | 功能描述:IC REG CTRLR BUCK PWM CM 24-QSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - 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: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) |
| ISL6445IAZS2695 | 制造商:Intersil Corporation 功能描述: |
| ISL6445IAZ-TK | 功能描述:IC REG CTRLR BUCK PWM CM 24-QSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - 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: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) |
| ISL6445IAZ-TKS2645 | 制造商:Intersil Corporation 功能描述:DC DC CNTRLR DUAL-OUT STEP DOWN 4.5V TO 24V 24QSOP W - Tape and Reel |
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